[devel] Imported from libpng-1.4.0beta104.tar

[devel] Rebuilt configure scripts with autoconf-2.65
[devel] Removed png_longjmp_ptr from scripts/*.def and libpng.3
2025-07-10 18:04:09 +02:00 · 2009-11-21 21:51:28 -06:00 · 2009-11-21 21:50:07 -06:00 · 2009-11-21 07:21:06 -06:00 · 2009-11-20 23:01:45 -06:00 · 2009-11-20 22:58:48 -06:00
139 changed files with 7221 additions and 8498 deletions
--- a/245
+++ b/245
@@ -1,5 +1,5 @@

-Libpng 1.4.0beta66 - June 27, 2009
+Libpng 1.4.0beta104 - November 22, 2009

 This is not intended to be a public release.  It will be replaced
 within a few weeks by a public version or by another test version.
@@ -9,27 +9,20 @@ Files available for download:
 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script

-   1.4.0beta66.tar.gz
-   1.4.0beta66.tar.bz2
-
-Source files with LF line endings (for Unix/Linux) without the
-"configure" script
-
-   1.4.0beta66-no-config.tar.gz
-   1.4.0beta66-no-config.tar.bz2
+   1.4.0beta104.tar.xz (LZMA-compressed, recommended)
+   1.4.0beta104.tar.gz
+   1.4.0beta104.tar.bz2

 Source files with CRLF line endings (for Windows), without the
 "configure" script

-   lp140b66.zip
-   lp140b66.tar.bz2
+   lp140b104.zip
+   lp140b104.7z

 Other information:

-   1.4.0beta66-README.txt
-   1.4.0beta66-KNOWNBUGS.txt
-   1.4.0beta66-LICENSE.txt
-   1.4.0beta66-Y2K-compliance.txt
+   1.4.0beta104-README.txt
+   1.4.0beta104-LICENSE.txt

 Changes since the last public release (1.2.10):

@@ -494,8 +487,226 @@ version 1.4.0beta65 [June 26, 2009]
 version 1.4.0beta66 [June 27, 2009]
  Refer to the libpng license instead of the libpng license in each file.

-version 1.4.0betaN [future]
-  Build shared libraries with -lz and sometimes -lm.
+version 1.4.0beta67 [July 6, 2009]
+  Relocated INVERT_ALPHA within png_read_png() and png_write_png().
+  Added high-level API transform PNG_TRANSFORM_GRAY_TO_RGB.
+  Added an "xcode" project to the projects directory (Alam Arias).
+
+version 1.4.0beta68 [July 19, 2009]
+  Avoid some tests in filter selection in pngwutil.c
+
+version 1.4.0beta69 [July 25, 2009]
+  Simplified the new filter-selection test.  This runs faster in the
+    common "PNG_ALL_FILTERS" and PNG_FILTER_NONE cases.
+  Removed extraneous declaration from the new call to png_read_gray_to_rgb()
+    (bug introduced in libpng-1.4.0beta67).
+  Fixed up xcode project (Alam Arias)
+
+version 1.4.0beta70 [July 27, 2009]
+  Avoid a possible NULL dereference in debug build, in png_set_text_2().
+    (bug introduced in libpng-0.95, discovered by Evan Rouault)
+
+version 1.4.0beta71 [July 29, 2009]
+  Rebuilt configure scripts with autoconf-2.64.
+  Added a prototype for png_64bit_product() in png.c
+
+version 1.4.0beta72 [August 1, 2009]
+  Replaced *.tar.lzma with *.tar.xz in distribution.  Get the xz codec
+    from <http://tukaani.org/xz>.
+
+version 1.4.0beta73 [August 1, 2009]
+  Reject attempt to write iCCP chunk with negative embedded profile length
+    (JD Chen)
+
+version 1.4.0beta74 [August 8, 2009]
+  Changed png_ptr and info_ptr member "trans" to "trans_alpha".
+
+version 1.4.0beta75 [August 21, 2009]
+  Removed an extra png_debug() recently added to png_write_find_filter().
+  Fixed incorrect #ifdef in pngset.c regarding unknown chunk support.
+
+version 1.4.0beta76 [August 22, 2009]
+  Moved an incorrectly located test in png_read_row() in pngread.c
+
+version 1.4.0beta77 [August 27, 2009]
+  Removed lpXYZ.tar.bz2 (with CRLF), KNOWNBUG, libpng-x.y.z-KNOWNBUG.txt,
+    and the "noconfig" files from the distribution.
+  Moved CMakeLists.txt from scripts into the main libpng directory.
+  Various bugfixes and improvements to CMakeLists.txt (Philip Lowman)
+
+version 1.4.0beta78 [August 31, 2009]
+  Converted all PNG_NO_* tests to PNG_*_SUPPORTED everywhere except pngconf.h
+  Eliminated PNG_NO_FREE_ME and PNG_FREE_ME_SUPPORTED macros.
+  Use png_malloc plus a loop instead of png_calloc() to initialize
+    row_pointers in png_read_png().
+
+version 1.4.0beta79 [September 1, 2009]
+  Eliminated PNG_GLOBAL_ARRAYS and PNG_LOCAL_ARRAYS; always use local arrays.
+  Eliminated PNG_CALLOC_SUPPORTED macro and always provide png_calloc().
+
+version 1.4.0beta80 [September 17, 2009]
+  Removed scripts/libpng.icc
+  Changed typecast of filler from png_byte to png_uint_16 in png_set_filler().
+    (Dennis Gustafsson)
+  Fixed typo introduced in beta78 in pngtest.c ("#if def " should be "#ifdef ")
+
+version 1.4.0beta81 [September 23, 2009]
+  Eliminated unused PNG_FLAG_FREE_* defines from pngpriv.h
+  Expanded TAB characters in pngrtran.c
+  Removed PNG_CONST from all "PNG_CONST PNG_CHNK" declarations to avoid
+    compiler complaints about doubly declaring things "const".
+  Changed all "#if [!]defined(X)" to "if[n]def X" where possible.
+  Eliminated unused png_ptr->row_buf_size
+
+version 1.4.0beta82 [September 25, 2009]
+  Moved redundant IHDR checking into new png_check_IHDR() in png.c
+    and report all errors found in the IHDR data.
+  Eliminated useless call to png_check_cHRM() from pngset.c
+
+version 1.4.0beta83 [September 25, 2009]
+  Revised png_check_IHDR() to eliminate bogus complaint about filter_type.
+
+version 1.4.0beta84 [September 30, 2009]
+  Fixed some inconsistent indentation in pngconf.h
+  Revised png_check_IHDR() to add a test for width variable less than 32-bit.
+
+version 1.4.0beta85 [October 1, 2009]
+  Revised png_check_IHDR() again, to check info_ptr members instead of
+    the contents of the returned parameters.
+
+version 1.4.0beta86 [October 9, 2009]
+  Updated the "xcode" project (Alam Arias).
+  Eliminated a shadowed declaration of "pp" in png_handle_sPLT().
+
+version 1.4.0rc01 [October 19, 2009]
+  Trivial cosmetic changes.
+
+version 1.4.0beta87 [October 30, 2009]
+  Moved version 1.4.0 back into beta.
+
+version 1.4.0beta88 [October 30, 2009]
+  Revised libpng*.txt section about differences between 1.2.x and 1.4.0
+    because most of the new features have now been ported back to 1.2.41
+
+version 1.4.0beta89 [November 1, 2009]
+  More bugfixes and improvements to CMakeLists.txt (Philip Lowman)
+  Removed a harmless extra png_set_invert_alpha() from pngwrite.c
+  Apply png_user_chunk_cache_max within png_decompress_chunk().
+  Merged libpng-1.2.41.txt with libpng-1.4.0.txt where appropriate.
+
+version 1.4.0beta90 [November 2, 2009]
+  Removed all remaining WIN32_WCE #ifdefs except those involving the
+    time.h "tm" structure
+
+version 1.4.0beta91 [November 3, 2009]
+  Updated scripts/pngw32.def and projects/wince/png32ce.def
+  Copied projects/wince/png32ce.def to the scripts directory.
+  Added scripts/makefile.wce
+  Patched ltmain.sh for wince support.
+  Added PNG_CONVERT_tIME_SUPPORTED macro.
+
+version 1.4.0beta92 [November 4, 2009]
+  Make inclusion of time.h in pngconf.h depend on PNG_CONVERT_tIME_SUPPORTED
+  Make #define PNG_CONVERT_tIME_SUPPORTED depend on PNG_WRITE_tIME_SUPPORTED
+  Revised libpng*.txt to describe differences from 1.2.40 to 1.4.0 (instead
+    of differences from 1.2.41 to 1.4.0)
+
+version 1.4.0beta93 [November 7, 2009]
+  Added PNG_DEPSTRUCT, PNG_DEPRECATED, PNG_USE_RESULT, PNG_NORETURN, and
+    PNG_ALLOCATED macros to detect deprecated direct access to the
+    png_struct or info_struct members and other deprecated usage in
+    applications (John Bowler).
+  Updated scripts/makefile* to add "-DPNG_CONFIGURE_LIBPNG" to CFLAGS,
+    to prevent warnings about direct access to png structs by libpng
+    functions while building libpng.  They need to be tested, especially
+    those using compilers other than gcc.
+  Updated projects/visualc6 and visualc71 with "/d PNG_CONFIGURE_LIBPNG".
+    They should work but still need to be updated to remove
+    references to pnggccrd.c or pngvcrd.c and ASM building.
+  Added README.txt to the beos, cbuilder5, netware, and xcode projects warning
+    that they need to be updated, to remove references to pnggccrd.c and
+    pngvcrd.c and to depend on pngpriv.h
+  Removed three direct references to read_info_ptr members in pngtest.c
+    that were detected by the new PNG_DEPSTRUCT macro.
+  Moved the png_debug macro definitions and the png_read_destroy(),
+    png_write_destroy() and png_far_to_near() prototypes from png.h
+    to pngpriv.h (John Bowler)
+  Moved the synopsis lines for png_read_destroy(), png_write_destroy()
+    png_debug(), png_debug1(), and png_debug2() from libpng.3 to libpngpf.3.
+
+version 1.4.0beta94 [November 9, 2009]
+  Removed the obsolete, unused pnggccrd.c and pngvcrd.c files.
+  Updated CMakeLists.txt to add "-DPNG_CONFIGURE_LIBPNG" to the definitions.
+  Removed dependency of pngtest.o on pngpriv.h in the makefiles.
+  Only #define PNG_DEPSTRUCT, etc. in pngconf.h if not already defined.
+
+version 1.4.0beta95 [November 10, 2009]
+  Changed png_check_sig() to !png_sig_cmp() in contrib programs.
+  Added -DPNG_CONFIGURE_LIBPNG to contrib/pngminm/*/makefile
+  Changed png_check_sig() to !png_sig_cmp() in contrib programs.
+  Corrected the png_get_IHDR() call in contrib/gregbook/readpng2.c
+  Changed pngminim/*/gather.sh to stop trying to remove pnggccrd.c and pngvcrd.c
+  Added dependency on pngpriv.h in contrib/pngminim/*/makefile
+
+version 1.4.0beta96 [November 12, 2009]
+  Renamed scripts/makefile.wce to scripts/makefile.cegcc
+  Revised Makefile.am to use libpng.sys while building libpng.so
+    so that only PNG_EXPORT functions are exported.
+  Removed the deprecated png_check_sig() function/macro.
+  Removed recently removed function names from scripts/*.def
+  Revised pngtest.png to put chunks in the same order written by pngtest
+    (evidently the same change made in libpng-1.0beta54 was lost).
+  Added PNG_PRIVATE macro definition in pngconf.h for possible future use.
+
+version 1.4.0beta97 [November 13, 2009]
+  Restored pngtest.png to the libpng-1.4.0beta7 version.
+  Removed projects/beos and netware.txt; no one seems to be supporting them.
+  Revised Makefile.in
+
+version 1.4.0beta98 [November 13, 2009]
+  Added the "xcode" project to zip distributions,
+  Fixed a typo in scripts/pngwin.def introduced in beta97.
+
+version 1.4.0beta99 [November 14, 2009]
+  Moved libpng-config.in and libpng.pc-configure.in out of the scripts
+    directory, to libpng-config.in and libpng-pc.in, respectively, and
+    modified Makefile.am and configure.ac accordingly.  Now "configure"
+    needs nothing from the "scripts" directory.
+
+version 1.4.0beta100 [November 14, 2009]
+  Removed ASM builds from projects/visualc6 and projects/visualc71
+  Removed scripts/makefile.nommx and makefile.vcawin32
+  Revised CMakeLists.txt to account for new location of libpng-config.in
+    and libpng-pc.in
+  Updated INSTALL to reflect removal and relocation of files.
+
+version 1.4.0beta101 [November 14, 2009]
+  Restored the binary files (*.jpg, *.png, some project files) that were
+    accidentally deleted from the zip and 7z distributions when the xcode
+    project was added.
+
+version 1.4.0beta102 [November 18, 2009]
+  Added libpng-config.in and libpng-pc.in to the zip and 7z distributions.
+  Fixed a typo in projects/visualc6/pngtest.dsp, introduced in beta100.
+  Moved descriptions of makefiles and other scripts out of INSTALL into
+    scripts/README.txt
+  Updated the copyright year in scripts/pngwin.rc from 2006 to 2009.
+
+version 1.4.0beta103 [November 21, 2009]
+  Removed obsolete comments about ASM from projects/visualc71/README_zlib.txt
+  Align row_buf on 16-byte boundary in memory.
+  Restored the PNG_WRITE_FLUSH_AFTER_IEND guard around the call to png_flush()
+    after png_write_IEND().  See 1.4.0beta32, 1.4.0beta50 changes above
+    and 1.2.30, 1.2.30rc01 and rc03 in 1.2.41 CHANGES.  Someone needs this
+    feature.
+  Make the 'png_jmpbuf' macro expand to a call that records the correct
+    longjmp function as well as returning a pointer to the setjmp
+    jmp_buf buffer, and marked direct access to jmpbuf 'deprecated'.
+    (John Bowler)
+
+version 1.4.0beta104 [November 22, 2009]
+  Removed png_longjmp_ptr from scripts/*.def and libpng.3
+  Rebuilt configure scripts with autoconf-2.65

 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
--- a/237
+++ b/237
@@ -1,5 +1,5 @@
 #if 0
-changes(){ /*
+libpng_changes(){ /*
 CHANGES - changes for libpng

 version 0.2
@@ -540,7 +540,8 @@ version 1.0.5d [November 29, 1999]
  Eliminated pngtypes.h; use macros instead to declare PNG_CHNK arrays.
  Renamed "PNG_GLOBAL_ARRAYS" to "PNG_USE_GLOBAL_ARRAYS" and made available
    to applications a macro "PNG_USE_LOCAL_ARRAYS".
-  #ifdef out all the new declarations when PNG_USE_GLOBAL_ARRAYS is defined.
+  comment out (with #ifdef) all the new declarations when
+    PNG_USE_GLOBAL_ARRAYS is defined.
  Added PNG_EXPORT_VAR macro to accommodate making DLL's.
 version 1.0.5e [November 30, 1999]
  Added iCCP, iTXt, and sPLT support; added "lang" member to the png_text
@@ -1301,7 +1302,7 @@ version 1.2.6beta4 [July 28, 2004]
  Added PNG_NO_SEQUENTIAL_READ_SUPPORTED macro to conditionally remove
    sequential read support.
  Added some "#if PNG_WRITE_SUPPORTED" blocks.
-  #ifdef'ed out some redundancy in png_malloc_default().
+  Added #ifdef to remove some redundancy in png_malloc_default().
  Use png_malloc instead of png_zalloc to allocate the pallete.
 version 1.0.16rc1 and 1.2.6rc1 [August 4, 2004]
  Fixed buffer overflow vulnerability in png_handle_tRNS()
@@ -1371,7 +1372,8 @@ version 1.2.8beta1 [November 1, 2004]
  Fixed bug, introduced in libpng-1.2.7, that overruns a buffer during
    strip alpha operation in png_do_strip_filler().
  Added PNG_1_2_X definition in pngconf.h
-  #ifdef out png_info_init in png.c and png_read_init in pngread.c (as of 1.3.0)
+  Use #ifdef to comment out png_info_init in png.c and png_read_init in
+    pngread.c (as of 1.3.0)
 version 1.2.8beta2 [November 2, 2004]
  Reduce color_type to a nonalpha type after strip alpha operation in
    png_do_strip_filler().
@@ -1757,8 +1759,8 @@ version 1.2.19beta6 [May 22, 2007]
  Added a special "_MSC_VER" case that defines png_snprintf to _snprintf

 version 1.2.19beta7 [May 22, 2007]
-  Squelched png_squelch_warnings() in pnggccrd.c and added an
-    #ifdef PNG_MMX_CODE_SUPPORTED block around the declarations that caused
+  Squelched png_squelch_warnings() in pnggccrd.c and added
+    an #ifdef PNG_MMX_CODE_SUPPORTED block around the declarations that caused
    the warnings that png_squelch_warnings was squelching.

 version 1.2.19beta8 [May 22, 2007]
@@ -2171,8 +2173,227 @@ version 1.4.0beta65 [June 26, 2009]
 version 1.4.0beta66 [June 27, 2009]
  Refer to the libpng license instead of the libpng license in each file.

-version 1.4.0betaN [future]
-  Build shared libraries with -lz and sometimes -lm.
+version 1.4.0beta67 [July 6, 2009]
+  Relocated INVERT_ALPHA within png_read_png() and png_write_png().
+  Added high-level API transform PNG_TRANSFORM_GRAY_TO_RGB.
+  Added an "xcode" project to the projects directory (Alam Arias).
+
+version 1.4.0beta68 [July 19, 2009]
+  Avoid some tests in filter selection in pngwutil.c
+
+version 1.4.0beta69 [July 25, 2009]
+  Simplified the new filter-selection test.  This runs faster in the
+    common "PNG_ALL_FILTERS" and PNG_FILTER_NONE cases.
+  Removed extraneous declaration from the new call to png_read_gray_to_rgb()
+    (bug introduced in libpng-1.4.0beta67).
+  Fixed up xcode project (Alam Arias)
+  Added a prototype for png_64bit_product() in png.c
+
+version 1.4.0beta70 [July 27, 2009]
+  Avoid a possible NULL dereference in debug build, in png_set_text_2().
+    (bug introduced in libpng-0.95, discovered by Evan Rouault)
+
+version 1.4.0beta71 [July 29, 2009]
+  Rebuilt configure scripts with autoconf-2.64.
+
+version 1.4.0beta72 [August 1, 2009]
+  Replaced *.tar.lzma with *.tar.xz in distribution.  Get the xz codec
+    from <http://tukaani.org/xz>.
+
+version 1.4.0beta73 [August 1, 2009]
+  Reject attempt to write iCCP chunk with negative embedded profile length
+    (JD Chen)
+
+version 1.4.0beta74 [August 8, 2009]
+  Changed png_ptr and info_ptr member "trans" to "trans_alpha".
+
+version 1.4.0beta75 [August 21, 2009]
+  Removed an extra png_debug() recently added to png_write_find_filter().
+  Fixed incorrect #ifdef in pngset.c regarding unknown chunk support.
+
+version 1.4.0beta76 [August 22, 2009]
+  Moved an incorrectly located test in png_read_row() in pngread.c
+
+version 1.4.0beta77 [August 27, 2009]
+  Removed lpXYZ.tar.bz2 (with CRLF), KNOWNBUG, libpng-x.y.z-KNOWNBUG.txt,
+    and the "noconfig" files from the distribution.
+  Moved CMakeLists.txt from scripts into the main libpng directory.
+  Various bugfixes and improvements to CMakeLists.txt (Philip Lowman)
+
+version 1.4.0beta78 [August 31, 2009]
+  Converted all PNG_NO_* tests to PNG_*_SUPPORTED everywhere except pngconf.h
+  Eliminated PNG_NO_FREE_ME and PNG_FREE_ME_SUPPORTED macros.
+  Use png_malloc plus a loop instead of png_calloc() to initialize
+    row_pointers in png_read_png().
+
+version 1.4.0beta79 [September 1, 2009]
+  Eliminated PNG_GLOBAL_ARRAYS and PNG_LOCAL_ARRAYS; always use local arrays.
+  Eliminated PNG_CALLOC_SUPPORTED macro and always provide png_calloc().
+
+version 1.4.0beta80 [September 17, 2009]
+  Removed scripts/libpng.icc
+  Changed typecast of filler from png_byte to png_uint_16 in png_set_filler().
+    (Dennis Gustafsson)
+  Fixed typo introduced in beta78 in pngtest.c ("#if def " should be "#ifdef ")
+
+version 1.4.0beta81 [September 23, 2009]
+  Eliminated unused PNG_FLAG_FREE_* defines from pngpriv.h
+  Expanded TAB characters in pngrtran.c
+  Removed PNG_CONST from all "PNG_CONST PNG_CHNK" declarations to avoid
+    compiler complaints about doubly declaring things "const".
+  Changed all "#if [!]defined(X)" to "if[n]def X" where possible.
+  Eliminated unused png_ptr->row_buf_size
+
+version 1.4.0beta82 [September 25, 2009]
+  Moved redundant IHDR checking into new png_check_IHDR() in png.c
+    and report all errors found in the IHDR data.
+  Eliminated useless call to png_check_cHRM() from pngset.c
+
+version 1.4.0beta83 [September 25, 2009]
+  Revised png_check_IHDR() to eliminate bogus complaint about filter_type.
+
+version 1.4.0beta84 [September 30, 2009]
+  Fixed some inconsistent indentation in pngconf.h
+  Revised png_check_IHDR() to add a test for width variable less than 32-bit.
+
+version 1.4.0beta85 [October 1, 2009]
+  Revised png_check_IHDR() again, to check info_ptr members instead of
+    the contents of the returned parameters.
+
+version 1.4.0beta86 [October 9, 2009]
+  Updated the "xcode" project (Alam Arias).
+  Eliminated a shadowed declaration of "pp" in png_handle_sPLT().
+
+version 1.4.0rc01 [October 19, 2009]
+  Trivial cosmetic changes.
+
+version 1.4.0beta87 [October 30, 2009]
+  Moved version 1.4.0 back into beta.
+
+version 1.4.0beta88 [October 30, 2009]
+  Revised libpng*.txt section about differences between 1.2.x and 1.4.0
+    because most of the new features have now been ported back to 1.2.41
+
+version 1.4.0beta89 [November 1, 2009]
+  More bugfixes and improvements to CMakeLists.txt (Philip Lowman)
+  Removed a harmless extra png_set_invert_alpha() from pngwrite.c
+  Apply png_user_chunk_cache_max within png_decompress_chunk().
+  Merged libpng-1.2.41.txt with libpng-1.4.0.txt where appropriate.
+
+version 1.4.0beta90 [November 2, 2009]
+  Removed all remaining WIN32_WCE #ifdefs except those involving the
+    time.h "tm" structure
+
+version 1.4.0beta91 [November 3, 2009]
+  Updated scripts/pngw32.def and projects/wince/png32ce.def
+  Copied projects/wince/png32ce.def to the scripts directory.
+  Added scripts/makefile.wce
+  Patched ltmain.sh for wince support.
+  Added PNG_CONVERT_tIME_SUPPORTED macro.
+
+version 1.4.0beta92 [November 4, 2009]
+  Make inclusion of time.h in pngconf.h depend on PNG_CONVERT_tIME_SUPPORTED
+  Make #define PNG_CONVERT_tIME_SUPPORTED depend on PNG_WRITE_tIME_SUPPORTED
+  Revised libpng*.txt to describe differences from 1.2.40 to 1.4.0 (instead
+    of differences from 1.2.41 to 1.4.0)
+
+version 1.4.0beta93 [November 7, 2009]
+  Added PNG_DEPSTRUCT, PNG_DEPRECATED, PNG_USE_RESULT, PNG_NORETURN, and
+    PNG_ALLOCATED macros to detect deprecated direct access to the
+    png_struct or info_struct members and other deprecated usage in
+    applications (John Bowler).
+  Updated scripts/makefile* to add "-DPNG_CONFIGURE_LIBPNG" to CFLAGS,
+    to prevent warnings about direct access to png structs by libpng
+    functions while building libpng.  They need to be tested, especially
+    those using compilers other than gcc.
+  Updated projects/visualc6 and visualc71 with "/d PNG_CONFIGURE_LIBPNG".
+    They should work but still need to be updated to remove
+    references to pnggccrd.c or pngvcrd.c and ASM building.
+  Added README.txt to the beos, cbuilder5, netware, and xcode projects warning
+    that they need to be updated, to remove references to pnggccrd.c and
+    pngvcrd.c and to depend on pngpriv.h
+  Removed three direct references to read_info_ptr members in pngtest.c
+    that were detected by the new PNG_DEPSTRUCT macro.
+  Moved the png_debug macro definitions and the png_read_destroy(),
+    png_write_destroy() and png_far_to_near() prototypes from png.h
+    to pngpriv.h (John Bowler)
+  Moved the synopsis lines for png_read_destroy(), png_write_destroy()
+    png_debug(), png_debug1(), and png_debug2() from libpng.3 to libpngpf.3.
+
+version 1.4.0beta94 [November 9, 2009]
+  Removed the obsolete, unused pnggccrd.c and pngvcrd.c files.
+  Updated CMakeLists.txt to add "-DPNG_CONFIGURE_LIBPNG" to the definitions.
+  Removed dependency of pngtest.o on pngpriv.h in the makefiles.
+  Only #define PNG_DEPSTRUCT, etc. in pngconf.h if not already defined.
+
+version 1.4.0beta95 [November 10, 2009]
+  Changed png_check_sig() to !png_sig_cmp() in contrib programs.
+  Added -DPNG_CONFIGURE_LIBPNG to contrib/pngminm/*/makefile
+  Changed png_check_sig() to !png_sig_cmp() in contrib programs.
+  Corrected the png_get_IHDR() call in contrib/gregbook/readpng2.c
+  Changed pngminim/*/gather.sh to stop trying to remove pnggccrd.c and pngvcrd.c
+  Added dependency on pngpriv.h in contrib/pngminim/*/makefile
+
+version 1.4.0beta96 [November 12, 2009]
+  Renamed scripts/makefile.wce to scripts/makefile.cegcc
+  Revised Makefile.am to use libpng.sys while building libpng.so
+    so that only PNG_EXPORT functions are exported.
+  Removed the deprecated png_check_sig() function/macro.
+  Removed recently removed function names from scripts/*.def
+  Revised pngtest.png to put chunks in the same order written by pngtest
+    (evidently the same change made in libpng-1.0beta54 was lost).
+  Added PNG_PRIVATE macro definition in pngconf.h for possible future use.
+
+version 1.4.0beta97 [November 13, 2009]
+  Restored pngtest.png to the libpng-1.4.0beta7 version.
+  Removed projects/beos and netware.txt; no one seems to be supporting them.
+  Revised Makefile.in
+
+version 1.4.0beta98 [November 13, 2009]
+  Added the "xcode" project to zip distributions,
+  Fixed a typo in scripts/pngwin.def introduced in beta97.
+
+version 1.4.0beta99 [November 14, 2009]
+  Moved libpng-config.in and libpng.pc-configure.in out of the scripts
+    directory, to libpng-config.in and libpng-pc.in, respectively, and
+    modified Makefile.am and configure.ac accordingly.  Now "configure"
+    needs nothing from the "scripts" directory.
+  Avoid redefining PNG_CONST in pngconf.h
+
+version 1.4.0beta100 [November 14, 2009]
+  Removed ASM builds from projects/visualc6 and projects/visualc71
+  Removed scripts/makefile.nommx and makefile.vcawin32
+  Revised CMakeLists.txt to account for new location of libpng-config.in
+    and libpng-pc.in
+  Updated INSTALL to reflect removal and relocation of files.
+
+version 1.4.0beta101 [November 14, 2009]
+  Restored the binary files (*.jpg, *.png, some project files) that were
+    accidentally deleted from the zip and 7z distributions when the xcode
+    project was added.
+
+version 1.4.0beta102 [November 18, 2009]
+  Added libpng-config.in and libpng-pc.in to the zip and 7z distributions.
+  Fixed a typo in projects/visualc6/pngtest.dsp, introduced in beta100.
+  Moved descriptions of makefiles and other scripts out of INSTALL into
+    scripts/README.txt
+  Updated the copyright year in scripts/pngwin.rc from 2006 to 2009.
+
+version 1.4.0beta103 [November 21, 2009]
+  Removed obsolete comments about ASM from projects/visualc71/README_zlib.txt
+  Align row_buf on 16-byte boundary in memory.
+  Restored the PNG_WRITE_FLUSH_AFTER_IEND_SUPPORTED guard around the call
+    to png_flush() after png_write_IEND().  See 1.4.0beta32, 1.4.0beta50
+    changes above and 1.2.30, 1.2.30rc01 and rc03 in 1.2.41 CHANGES.  Someone
+    needs this feature.
+  Make the 'png_jmpbuf' macro expand to a call that records the correct
+    longjmp function as well as returning a pointer to the setjmp
+    jmp_buf buffer, and marked direct access to jmpbuf 'deprecated'.
+    (John Bowler)
+
+version 1.4.0beta104 [November 22, 2009]
+  Removed png_longjmp_ptr from scripts/*.def and libpng.3
+  Rebuilt configure scripts with autoconf-2.65

 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
--- a/scripts/CMakeLists.txt
+++ b/scripts/CMakeLists.txt
@@ -1,5 +1,12 @@
+cmake_minimum_required(VERSION 2.4.3)
+if(UNIX AND NOT DEFINED CMAKE_BUILD_TYPE)
+   set(CMAKE_BUILD_TYPE "RelWithDebInfo" CACHE STRING "Choose the type of
+   build, options are: None(CMAKE_CXX_FLAGS or CMAKE_C_FLAGS used) Debug
+   Release RelWithDebInfo MinSizeRel.")
+endif()

-project(PNG)
+project(PNG C)
+enable_testing()

 # Copyright (C) 2007 Glenn Randers-Pehrson

@@ -13,8 +20,12 @@ set(PNGLIB_RELEASE 0)
 set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR})
 set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE})

+set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS true)
+
 # needed packages
 find_package(ZLIB REQUIRED)
+include_directories(${ZLIB_INCLUDE_DIR})
+
 if(NOT WIN32)
 find_library(M_LIBRARY
     NAMES m
@@ -23,24 +34,33 @@ if(NOT WIN32)
 if(NOT M_LIBRARY)
   message(STATUS
     "math library 'libm' not found - floating point support disabled")
- endif(NOT M_LIBRARY)
-else(NOT WIN32)
+ endif()
+else()
 # not needed on windows
 set(M_LIBRARY "")
-endif(NOT WIN32)
-
+endif()

 # COMMAND LINE OPTIONS
-option(PNG_SHARED "Build shared lib" YES)
-option(PNG_STATIC "Build static lib" YES)
+if(DEFINED PNG_SHARED)
+  option(PNG_SHARED "Build shared lib" ${PNG_SHARED})
+else()
+  option(PNG_SHARED "Build shared lib" ON)
+endif()
+if(DEFINED PNG_STATIC)
+  option(PNG_STATIC "Build static lib" ${PNG_STATIC})
+else()
+  option(PNG_STATIC "Build static lib" ON)
+endif()
+
 if(MINGW)
  option(PNG_TESTS  "Build pngtest" NO)
 else(MINGW)
  option(PNG_TESTS  "Build pngtest" YES)
 endif(MINGW)
+
 option(PNG_NO_CONSOLE_IO "FIXME" YES)
 option(PNG_NO_STDIO      "FIXME" YES)
-option(PNG_DEBUG         "Build with debug output" YES)
+option(PNG_DEBUG         "Build with debug output" NO)
 option(PNGARG            "FIXME" YES)
 #TODO:
 # PNG_CONSOLE_IO_SUPPORTED
@@ -57,20 +77,16 @@ if(NOT WIN32)
      set(png_asm_tmp "OFF")
   endif("uname_output" MATCHES "^.*i[1-9]86.*$")
 endif(uname_executable)
-else(NOT WIN32)
+else()
 # this env var is normally only set on win64
 SET(TEXT "ProgramFiles(x86)")
 if("$ENV{${TEXT}}" STREQUAL "")
  set(png_asm_tmp "ON")
 endif("$ENV{${TEXT}}" STREQUAL "")
-endif(NOT WIN32)
+endif()

 # SET LIBNAME
-# msvc does not append 'lib' - do it here to have consistent name
-if(MSVC)
- set(PNG_LIB_NAME lib)
-endif(MSVC)
-set(PNG_LIB_NAME ${PNG_LIB_NAME}png${PNGLIB_MAJOR}${PNGLIB_MINOR})
+set(PNG_LIB_NAME png${PNGLIB_MAJOR}${PNGLIB_MINOR})

 # to distinguish between debug and release lib
 set(CMAKE_DEBUG_POSTFIX "d")
@@ -101,55 +117,71 @@ set(pngtest_sources
       pngtest.c
 )
 # SOME NEEDED DEFINITIONS
+
+add_definitions(-DPNG_CONFIGURE_LIBPNG)
+
 if(MSVC)
  add_definitions(-DPNG_NO_MODULEDEF -D_CRT_SECURE_NO_DEPRECATE)
 endif(MSVC)

-add_definitions(-DZLIB_DLL)
+if(PNG_SHARED OR  NOT MSVC)
+	#if building msvc static this has NOT to be defined
+	add_definitions(-DZLIB_DLL)
+endif()

 if(PNG_CONSOLE_IO_SUPPORTED)
 add_definitions(-DPNG_CONSOLE_IO_SUPPORTED)
-endif(PNG_CONSOLE_IO_SUPPORTED)
+endif()

 if(PNG_NO_CONSOLE_IO)
 add_definitions(-DPNG_NO_CONSOLE_IO)
-endif(PNG_NO_CONSOLE_IO)
+endif()

 if(PNG_NO_STDIO)
 add_definitions(-DPNG_NO_STDIO)
-endif(PNG_NO_STDIO)
+endif()

 if(PNG_DEBUG)
 add_definitions(-DPNG_DEBUG)
-endif(PNG_DEBUG)
+endif()

 if(NOT M_LIBRARY AND NOT WIN32)
 add_definitions(-DPNG_NO_FLOATING_POINT_SUPPORTED)
-endif(NOT M_LIBRARY AND NOT WIN32)
+endif()

 # NOW BUILD OUR TARGET
 include_directories(${PNG_SOURCE_DIR} ${ZLIB_INCLUDE_DIR})

 if(PNG_SHARED)
 add_library(${PNG_LIB_NAME} SHARED ${libpng_sources})
+ if(MSVC)
+   # msvc does not append 'lib' - do it here to have consistent name
+   set_target_properties(${PNG_LIB_NAME} PROPERTIES PREFIX "lib")
+ endif()
 target_link_libraries(${PNG_LIB_NAME} ${ZLIB_LIBRARY} ${M_LIBRARY})
-endif(PNG_SHARED)
+endif()
+
 if(PNG_STATIC)
 # does not work without changing name
 set(PNG_LIB_NAME_STATIC ${PNG_LIB_NAME}_static)
 add_library(${PNG_LIB_NAME_STATIC} STATIC ${libpng_sources})
-endif(PNG_STATIC)
+ if(MSVC)
+   # msvc does not append 'lib' - do it here to have consistent name
+   set_target_properties(${PNG_LIB_NAME_STATIC} PROPERTIES PREFIX "lib")
+ endif()
+endif()
+

 if(PNG_SHARED AND WIN32)
 set_target_properties(${PNG_LIB_NAME} PROPERTIES DEFINE_SYMBOL PNG_BUILD_DLL)
-endif(PNG_SHARED AND WIN32)
+endif()

-if(PNG_TESTS)
+if(PNG_TESTS AND PNG_SHARED)
 # does not work with msvc due to png_lib_ver issue
 add_executable(pngtest ${pngtest_sources})
 target_link_libraries(pngtest ${PNG_LIB_NAME})
-#  add_test(pngtest ${PNG_SOURCE_DIR}/pngtest.png)
-endif(PNG_TESTS)
+ add_test(pngtest pngtest ${PNG_SOURCE_DIR}/pngtest.png)
+endif()


 # CREATE PKGCONFIG FILES
@@ -159,40 +191,63 @@ set(exec_prefix ${CMAKE_INSTALL_PREFIX})
 set(libdir      ${CMAKE_INSTALL_PREFIX}/lib)
 set(includedir  ${CMAKE_INSTALL_PREFIX}/include)

-configure_file(${PNG_SOURCE_DIR}/scripts/libpng.pc.in
+configure_file(${PNG_SOURCE_DIR}/libpng-pc.in
  ${PNG_BINARY_DIR}/libpng.pc)
-configure_file(${PNG_SOURCE_DIR}/scripts/libpng-config.in
+configure_file(${PNG_SOURCE_DIR}/libpng-config.in
  ${PNG_BINARY_DIR}/libpng-config)
-configure_file(${PNG_SOURCE_DIR}/scripts/libpng.pc.in
+configure_file(${PNG_SOURCE_DIR}/libpng-pc.in
  ${PNG_BINARY_DIR}/${PNGLIB_NAME}.pc)
-configure_file(${PNG_SOURCE_DIR}/scripts/libpng-config.in
+configure_file(${PNG_SOURCE_DIR}/libpng-config.in
  ${PNG_BINARY_DIR}/${PNGLIB_NAME}-config)

 # SET UP LINKS
-set_target_properties(${PNG_LIB_NAME} PROPERTIES
-#    VERSION 14.${PNGLIB_RELEASE}.1.4.0beta66
+if(PNG_SHARED)
+  set_target_properties(${PNG_LIB_NAME} PROPERTIES
+#    VERSION 14.${PNGLIB_RELEASE}.1.4.0beta104
     VERSION 14.${PNGLIB_RELEASE}.0
     SOVERSION 14
     CLEAN_DIRECT_OUTPUT 1)
-if(NOT WIN32)
-  # that's uncool on win32 - it overwrites our static import lib...
-  set_target_properties(${PNG_LIB_NAME_STATIC} PROPERTIES
-     OUTPUT_NAME ${PNG_LIB_NAME}
-     CLEAN_DIRECT_OUTPUT 1)
-endif(NOT WIN32)
-# INSTALL
-install_targets(/lib ${PNG_LIB_NAME})
+endif()
 if(PNG_STATIC)
-  install_targets(/lib ${PNG_LIB_NAME_STATIC})
-endif(PNG_STATIC)
-install(FILES png.h pngconf.h pngpriv.h  DESTINATION include)
-install(FILES png.h pngconf.h pngpriv.h  DESTINATION include/${PNGLIB_NAME})
-install(FILES libpng.3 libpngpf.3             DESTINATION man/man3)
-install(FILES png.5                           DESTINATION man/man5)
-install(FILES ${PNG_BINARY_DIR}/libpng.pc     DESTINATION lib/pkgconfig)
-install(FILES ${PNG_BINARY_DIR}/libpng-config      DESTINATION bin)
-install(FILES ${PNG_BINARY_DIR}/${PNGLIB_NAME}.pc  DESTINATION lib/pkgconfig)
-install(FILES ${PNG_BINARY_DIR}/${PNGLIB_NAME}-config DESTINATION bin)
+  if(NOT WIN32)
+    # that's uncool on win32 - it overwrites our static import lib...
+    set_target_properties(${PNG_LIB_NAME_STATIC} PROPERTIES
+       OUTPUT_NAME ${PNG_LIB_NAME}
+       CLEAN_DIRECT_OUTPUT 1)
+  endif()
+endif()
+
+# INSTALL
+if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL )
+    if(PNG_SHARED)
+        install(TARGETS ${PNG_LIB_NAME}
+            RUNTIME DESTINATION bin
+            LIBRARY DESTINATION lib
+            ARCHIVE DESTINATION lib)
+    endif()
+    if(PNG_STATIC)
+        install(TARGETS ${PNG_LIB_NAME_STATIC}
+            LIBRARY DESTINATION lib
+            ARCHIVE DESTINATION lib)
+    endif()
+endif()
+
+if(NOT SKIP_INSTALL_HEADERS AND NOT SKIP_INSTALL_ALL )
+    install(FILES png.h pngconf.h pngpriv.h         DESTINATION include)
+    install(FILES png.h pngconf.h pngpriv.h         DESTINATION include/${PNGLIB_NAME})
+endif()
+if(NOT SKIP_INSTALL_EXECUTABLES AND NOT SKIP_INSTALL_ALL )
+    install(PROGRAMS ${PNG_BINARY_DIR}/libpng-config      DESTINATION bin)
+    install(PROGRAMS ${PNG_BINARY_DIR}/${PNGLIB_NAME}-config DESTINATION bin)
+endif()
+if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL )
+    install(FILES libpng.3 libpngpf.3             DESTINATION man/man3)
+    install(FILES png.5                           DESTINATION man/man5)
+    install(FILES ${PNG_BINARY_DIR}/libpng.pc     DESTINATION lib/pkgconfig)
+    install(FILES ${PNG_BINARY_DIR}/libpng-config      DESTINATION bin)
+    install(FILES ${PNG_BINARY_DIR}/${PNGLIB_NAME}.pc  DESTINATION lib/pkgconfig)
+    install(FILES ${PNG_BINARY_DIR}/${PNGLIB_NAME}-config DESTINATION bin)
+endif()

 # what's with libpng.txt and all the extra files?

--- a/127
+++ b/127
@@ -1,5 +1,5 @@

-Installing libpng version 1.4.0beta66 - June 27, 2009
+Installing libpng version 1.4.0beta104 - November 22, 2009

 On Unix/Linux and similar systems, you can simply type

@@ -25,6 +25,9 @@ Instead, you can use one of the custom-built makefiles in the
    make test
    make install

+The files that are presently available in the scripts directory
+are listed and described in scripts/README.txt.
+
 Or you can use one of the "projects" in the "projects" directory.

 Before installing libpng, you must first install zlib, if it
@@ -32,8 +35,7 @@ is not already on your system.  zlib can usually be found
 wherever you got libpng.  zlib can be placed in another directory,
 at the same level as libpng.

-If you want to use "cmake" (see www.cmake.org), copy CMakeLists.txt
-from the "scripts" directory to this directory and type
+If you want to use "cmake" (see www.cmake.org), type

   cmake . -DCMAKE_INSTALL_PREFIX=/path
   make
@@ -44,8 +46,8 @@ to have access to the zlib.h and zconf.h include files that
 correspond to the version of zlib that's installed.

 You can rename the directories that you downloaded (they
-might be called "libpng-1.4.0beta66" or "lpng109" and "zlib-1.2.1"
-or "zlib121") so that you have directories called "zlib" and "libpng".
+might be called "libpng-1.4.0beta104" or "libpng14" and "zlib-1.2.3"
+or "zlib123") so that you have directories called "zlib" and "libpng".

 Your directory structure should look like this:

@@ -55,17 +57,28 @@ Your directory structure should look like this:
          README
          *.h
          *.c
+          CMakeLists.txt    =>  "cmake" script
+          configuration files:
+             configure.ac, configure, Makefile.am, Makefile.in,
+%12-%             autogen.sh, config.guess, ltmain.sh, missing,
+%12-%             aclocal.m4, config.h.in, config.sub,
+%14+%             autogen.sh, config.guess, ltmain.sh, missing, libpng-pc.in,
+%14+%             libpng-config.in, aclocal.m4, config.h.in, config.sub,
+             depcomp, install-sh, mkinstalldirs, test-pngtest.sh
          contrib
             gregbook
+             pngminim
             pngminus
             pngsuite
             visupng
          projects
-             beos
-             c5builder (Borland)
+             cbuilder5 (Borland)
             visualc6 (msvc)
+             visualc71
+             xcode
          scripts
             makefile.*
+             *.def (module definition files)
          pngtest.png
          etc.
      zlib
@@ -80,83 +93,13 @@ distribution of libpng.  It is available in both tar.gz (UNIX style line
 endings) and zip (DOS style line endings) formats.

 If you are building libpng with MSVC, you can enter the
-libpng projects\visualc6 directory and follow the instructions in
-projects\visualc6\README.txt.
+libpng projects\visualc6 or visualc71 directory and follow the instructions
+in README.txt.

-You can build libpng for beos as instructed in projects\beos.
-
-Else enter the zlib directory and follow the instructions in zlib/README,
+Otherwise enter the zlib directory and follow the instructions in zlib/README,
 then come back here and run "configure" or choose the appropriate
 makefile.sys in the scripts directory.

-The files that are presently available in the scripts directory
-include
-
- CMakeLists.txt    =>  "cmake" script
- makefile.std      =>  Generic UNIX makefile (cc, creates static libpng.a)
- makefile.elf      =>  Linux/ELF makefile symbol versioning,
-                       gcc, creates libpng14.so.14.1.4.0beta66)
- makefile.linux    =>  Linux/ELF makefile
-                       (gcc, creates libpng14.so.14.1.4.0beta66)
- makefile.gcmmx    =>  Linux/ELF makefile
-                       (gcc, creates libpng14.so.14.1.4.0beta66,
-                       uses assembler code tuned for Intel MMX platform)
- makefile.nommx    =>  Linux/ELF makefile
-                       (gcc, creates libpng14.so.14.1.4.0beta66
-                       does not use Intel MMX assembler code)
- makefile.gcc      =>  Generic makefile (gcc, creates static libpng.a)
- makefile.knr      =>  Archaic UNIX Makefile that converts files with
-                       ansi2knr (Requires ansi2knr.c from
-                       ftp://ftp.cs.wisc.edu/ghost)
- makefile.aix      =>  AIX/gcc makefile
- makefile.cygwin   =>  Cygwin/gcc makefile
- makefile.darwin   =>  Darwin makefile, can use on MacosX
- makefile.dec      =>  DEC Alpha UNIX makefile
- makefile.freebsd  =>  FreeBSD makefile
- makefile.hpgcc    =>  HPUX makefile using gcc
- makefile.hpux     =>  HPUX (10.20 and 11.00) makefile
- makefile.hp64     =>  HPUX (10.20 and 11.00) makefile, 64-bit
- makefile.ibmc     =>  IBM C/C++ version 3.x for Win32 and OS/2 (static)
- makefile.intel    =>  Intel C/C++ version 4.0 and later
- libpng.icc        =>  Project file for IBM VisualAge/C++ version 4.0 or later
- makefile.netbsd   =>  NetBSD/cc makefile, uses PNGGCCRD, makes libpng.so.
- makefile.ne14bsd  =>  NetBSD/cc makefile, uses PNGGCCRD,
-                       makes libpng14.so
- makefile.openbsd  =>  OpenBSD makefile
- makefile.sgi      =>  Silicon Graphics IRIX makefile (cc, creates static lib)
- makefile.sggcc    =>  Silicon Graphics (gcc,
-                       creates libpng14.so.14.1.4.0beta66)
- makefile.sunos    =>  Sun makefile
- makefile.solaris  =>  Solaris 2.X makefile (gcc,
-                       creates libpng14.so.14.1.4.0beta66)
- makefile.so9      =>  Solaris 9 makefile (gcc,
-                       creates libpng14.so.14.1.4.0beta66)
- makefile.32sunu   =>  Sun Ultra 32-bit makefile
- makefile.64sunu   =>  Sun Ultra 64-bit makefile
- makefile.sco      =>  For SCO OSr5  ELF and Unixware 7 with Native cc
- makefile.mips     =>  MIPS makefile
- makefile.acorn    =>  Acorn makefile
- makefile.amiga    =>  Amiga makefile
- smakefile.ppc     =>  AMIGA smakefile for SAS C V6.58/7.00 PPC compiler
-                       (Requires SCOPTIONS, copied from scripts/SCOPTIONS.ppc)
- makefile.atari    =>  Atari makefile
- makefile.beos     =>  BEOS makefile for X86
- makefile.bor      =>  Borland makefile (uses bcc)
- makefile.bc32     =>  32-bit Borland C++ (all modules compiled in C mode)
- makefile.tc3      =>  Turbo C 3.0 makefile
- makefile.dj2      =>  DJGPP 2 makefile
- makefile.msc      =>  Microsoft C makefile
- makefile.vcawin32 =>  makefile for Microsoft Visual C++ 5.0 and later (uses
-                       assembler code tuned for Intel MMX platform)
- makefile.vcwin32  =>  makefile for Microsoft Visual C++ 4.0 and later (does
-                       not use assembler code)
- makefile.os2      =>  OS/2 Makefile (gcc and emx, requires pngos2.def)
- pngos2.def        =>  OS/2 module definition file used by makefile.os2
- makefile.watcom   =>  Watcom 10a+ Makefile, 32-bit flat memory model
- makevms.com       =>  VMS build script
- descrip.mms       =>  VMS makefile for MMS or MMK
- SCOPTIONS.ppc     =>  Used with smakefile.ppc
-
 Copy the file (or files) that you need from the
 scripts directory into this directory, for example

@@ -186,9 +129,11 @@ run "make install".

 If you encounter a compiler error message complaining about the
 lines
+
      __png.h__ already includes setjmp.h;
      __dont__ include it again.;
-This means you have compiled another module that includes setjmp.h,
+
+this means you have compiled another module that includes setjmp.h,
 which is hazardous because the two modules might not include exactly
 the same setjmp.h.  If you are sure that you know what you are doing
 and that they are exactly the same, then you can comment out or
@@ -198,23 +143,3 @@ instead, as demonstrated in contrib/visupng of the libpng distribution.
 Further information can be found in the README and libpng.txt
 files, in the individual makefiles, in png.h, and the manual pages
 libpng.3 and png.5.
-
-
-Using the ./configure script -- 16 December 2002.
-=================================================
-
-
-The ./configure script should work compatibly with what scripts/makefile.*
-did, however there are some options you need to add to configure explicitly,
-which previously was done semi-automatically (if you didn't edit
-scripts/makefile.* yourself, that is)
-
-
-CFLAGS="-Wall -O -funroll-loops \
-malign-loops=2 -malign-functions=2" ./configure --prefix=/usr/include \
--with-pkgconfigdir=/usr/lib/pkgconfig --includedir=/usr/include
-
-You can alternatively specify --includedir=/usr/include, /usr/local/include,
-/usr/include/png12, or whatever.
-
-
--- a/27
+++ b/27
@@ -1,27 +0,0 @@
-
-Known bugs in libpng version 1.4.0beta66
-
-1. April 22, 2001: pnggccrd.c has been reported to crash on NetBSD when
-   reading interlaced PNG files, when assembler code is enabled but running
-   on a non-MMX i386 platform.
-
-   STATUS: Under investigation.  The change to pnggccrd.c in libpng-1.2.1
-   fixed a problem under FreeBSD but not the problem with NetBSD, which
-   still fails as of libpng-1.2.2rc1.
-
-2. February 23, 2006: The custom makefiles don't build libpng with -lz.
-
-   STATUS: This is a subject of debate. The change will probably be made
-   as a part of a major overhaul of the makefiles in libpng version 1.3.0.
-
-3. February 24, 2006: The Makefile generated by the "configure" script
-   fails to install symbolic links
-   libpng12.so => libpng12.so.0.1.2.9betaN
-   that are generated by the custom makefiles.
-
-   STATUS: For now, system library builders should use the custom makefiles.
-
-4. November 14, 2006: "make install" fails to build pngdefs.h.
-   "make; make install" works.
-
-   STATUS:  Under investigation.
--- a/4
+++ b/4
@@ -10,7 +10,7 @@ this sentence.

 This code is released under the libpng license.

-libpng versions 1.2.6, August 15, 2004, through 1.4.0beta66, June 27, 2009, are
+libpng versions 1.2.6, August 15, 2004, through 1.4.0beta104, November 22, 2009, are
 Copyright (c) 2004, 2006-2007 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.2.5
 with the following individual added to the list of Contributing Authors
@@ -108,4 +108,4 @@ certification mark of the Open Source Initiative.

 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-June 27, 2009
+November 22, 2009
--- a/Makefile.am
+++ b/Makefile.am
@@ -29,23 +29,19 @@ EXTRA_SCRIPTS= libpng-config libpng14-config
 bin_SCRIPTS= @binconfigs@

 # rules to build libpng, only build the old library on request
-lib_LTLIBRARIES=libpng14.la @compatlib@
+lib_LTLIBRARIES=libpng14.la
 EXTRA_LTLIBRARIES= libpng.la
-libpng14_la_SOURCES = png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
+libpng14_la_SOURCES = png.c pngset.c pngget.c pngrutil.c \
+	pngtrans.c pngwutil.c \
 	pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
 	pngwtran.c pngmem.c pngerror.c pngpread.c \
-	png.h pngconf.h
-libpng_la_SOURCES = $(libpng14_la_SOURCES)
+	png.h pngconf.h pngpriv.h

-libpng_la_CPPFLAGS = @LIBPNG_DEFINES@
 libpng14_la_CPPFLAGS = @LIBPNG_DEFINES@

 # MAJOR UPGRADE: the version-number settings below must be changed.
 libpng14_la_LDFLAGS = -no-undefined -export-dynamic \
-	-version-number 14:@PNGLIB_RELEASE@:14
-# -rpath is needed as automake doesn't know the directory
-libpng_la_LDFLAGS = -rpath '$(libdir)' -no-undefined -export-dynamic \
-	-version-number 14:@PNGLIB_RELEASE@:14
+	-version-number 14:@PNGLIB_RELEASE@:0

 if HAVE_LD_VERSION_SCRIPT
  # Versioned symbols and restricted exports
@@ -56,7 +52,6 @@ else
  libpng14_la_LDFLAGS += -export-symbols libpng.sym
  libpng14_la_DEPENDENCIES = libpng.sym
 endif
-libpng_la_DEPENDENCIES = $(libpng14_la_DEPENDENCIES)

 # Avoid depending upon Character Ranges.
 AN = '_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
@@ -75,18 +70,17 @@ EXTRA_DIST= \
 	ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO \
 	pngtest.png pngbar.png pngnow.png pngbar.jpg autogen.sh \
 	${srcdir}/projects/cbuilder5/* \
-	${srcdir}/projects/beos/* \
 	${srcdir}/projects/visualc6/* \
 	${srcdir}/projects/visualc71/* \
-	${srcdir}/projects/wince.txt \
-	${srcdir}/projects/netware.txt \
+	${srcdir}/projects/xcode/* \
 	${srcdir}/scripts/* \
 	${srcdir}/contrib/gregbook/* \
+	${srcdir}/contrib/pngminim/* \
 	${srcdir}/contrib/pngminus/* \
 	${srcdir}/contrib/pngsuite/* \
 	${srcdir}/contrib/visupng/* \
 	$(TESTS) \
-	example.c libpng-1.4.0beta66.txt pngvcrd.c 
+	example.c libpng-1.4.0beta104.txt

 CLEANFILES= pngout.png libpng14.pc libpng14-config libpng.vers \
 libpng.sym
@@ -144,10 +138,3 @@ uninstall-hook:
 	cd $(DESTDIR)$(includedir); rm -f png.h pngconf.h
 	rm -f $(DESTDIR)$(pkgconfigdir)/libpng.pc
 	rm -f $(DESTDIR)$(bindir)/libpng-config
-	@if test -n "@compatlib@"; then\
-		set -x;\
-		cd $(DESTDIR)$(libdir);\
-		for ext in a la so sl dylib; do\
-			rm -f libpng.$$ext;\
-		done;\
-	fi
--- a/Makefile.in
+++ b/Makefile.in
--- a/21
+++ b/21
@@ -1,11 +1,11 @@
-README for libpng version 1.4.0beta66 - June 27, 2009 (shared library 14.0)
+README for libpng version 1.4.0beta104 - November 22, 2009 (shared library 14.0)
 See the note about version numbers near the top of png.h

 See INSTALL for instructions on how to install libpng.

-Libpng comes in several distribution formats.  Get libpng-*.tar.gz
-or libpng-*.tar.bz2 if you want UNIX-style line endings in the text
-files, or lpng*.zip if you want DOS-style line endings.
+Libpng comes in several distribution formats.  Get libpng-*.tar.gz,
+libpng-*.tar.xz or libpng-*.tar.bz2 if you want UNIX-style line endings
+in the text files, or lpng*.zip if you want DOS-style line endings.

 Version 0.89 was the first official release of libpng.  Don't let the
 fact that it's the first release fool you.  The libpng library has been in
@@ -184,11 +184,11 @@ Files in this distribution:
       descrip.mms      =>  VMS makefile for MMS or MMK
       makefile.std     =>  Generic UNIX makefile (cc, creates static libpng.a)
       makefile.elf     =>  Linux/ELF makefile symbol versioning,
-                            gcc, creates libpng14.so.14.1.4.0beta66)
+                            gcc, creates libpng14.so.14.1.4.0beta104)
       makefile.linux   =>  Linux/ELF makefile
-                            (gcc, creates libpng14.so.14.1.4.0beta66)
+                            (gcc, creates libpng14.so.14.1.4.0beta104)
       makefile.gcmmx   =>  Linux/ELF makefile
-                            (gcc, creates libpng14.so.14.1.4.0beta66,
+                            (gcc, creates libpng14.so.14.1.4.0beta104,
                            uses assembler code tuned for Intel MMX platform)
       makefile.gcc     =>  Generic makefile (gcc, creates static libpng.a)
       makefile.knr     =>  Archaic UNIX Makefile that converts files with
@@ -204,18 +204,17 @@ Files in this distribution:
       makefile.hp64    =>  HPUX (10.20 and 11.00) makefile, 64 bit
       makefile.ibmc    =>  IBM C/C++ version 3.x for Win32 and OS/2 (static)
       makefile.intel   =>  Intel C/C++ version 4.0 and later
-       libpng.icc       =>  Project file, IBM VisualAge/C++ 4.0 or later
       makefile.netbsd  =>  NetBSD/cc makefile, PNGGCCRD, makes libpng.so.
       makefile.ne14bsd  =>  NetBSD/cc makefile, PNGGCCRD, makes libpng14.so
       makefile.openbsd =>  OpenBSD makefile
       makefile.sgi     =>  Silicon Graphics IRIX (cc, creates static lib)
       makefile.sggcc   =>  Silicon Graphics
-                            (gcc, creates libpng14.so.14.1.4.0beta66)
+                            (gcc, creates libpng14.so.14.1.4.0beta104)
       makefile.sunos   =>  Sun makefile
       makefile.solaris =>  Solaris 2.X makefile
-                            (gcc, creates libpng14.so.14.1.4.0beta66)
+                            (gcc, creates libpng14.so.14.1.4.0beta104)
       makefile.so9     =>  Solaris 9 makefile
-                            (gcc, creates libpng14.so.14.1.4.0beta66)
+                            (gcc, creates libpng14.so.14.1.4.0beta104)
       makefile.32sunu  =>  Sun Ultra 32-bit makefile
       makefile.64sunu  =>  Sun Ultra 64-bit makefile
       makefile.sco     =>  For SCO OSr5  ELF and Unixware 7 with Native cc
--- a/5
+++ b/5
@@ -19,8 +19,13 @@ Better filter selection
 Histogram creation.
 Text conversion between different code pages (Latin-1 -> Mac and DOS).
 Build gamma tables using fixed point (and do away with floating point entirely).
+Avoid building gamma tables whenever possible.
 Use greater precision when changing to linear gamma for compositing against
  background and doing rgb-to-gray transformation.
 Investigate pre-incremented loop counters and other loop constructions.
 Add interpolated method of handling interlacing.
+Provide for conditional compilation of 16-bit support (except for the
+  initial stripping down to 8-bits when reading a 16-bit PNG datastream).
+Switch to the simpler zlib (zlib/libpng) license if legally possible.
+
 */
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -1,7 +1,7 @@
-# generated automatically by aclocal 1.10.2 -*- Autoconf -*-
+# generated automatically by aclocal 1.11 -*- Autoconf -*-

 # Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-# 2005, 2006, 2007, 2008  Free Software Foundation, Inc.
+# 2005, 2006, 2007, 2008, 2009  Free Software Foundation, Inc.
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.
@@ -13,8 +13,8 @@

 m4_ifndef([AC_AUTOCONF_VERSION],
  [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
-m4_if(m4_defn([AC_AUTOCONF_VERSION]), [2.63],,
-[m4_warning([this file was generated for autoconf 2.63.
+m4_if(m4_defn([AC_AUTOCONF_VERSION]), [2.65],,
+[m4_warning([this file was generated for autoconf 2.65.
 You have another version of autoconf.  It may work, but is not guaranteed to.
 If you have problems, you may need to regenerate the build system entirely.
 To do so, use the procedure documented by the package, typically `autoreconf'.])])
@@ -7859,15 +7859,15 @@ m4_define([lt_dict_filter],

 # Generated from ltversion.in.

-# serial 3012 ltversion.m4
+# serial 3017 ltversion.m4
 # This file is part of GNU Libtool

-m4_define([LT_PACKAGE_VERSION], [2.2.6])
-m4_define([LT_PACKAGE_REVISION], [1.3012])
+m4_define([LT_PACKAGE_VERSION], [2.2.6b])
+m4_define([LT_PACKAGE_REVISION], [1.3017])

 AC_DEFUN([LTVERSION_VERSION],
-[macro_version='2.2.6'
-macro_revision='1.3012'
+[macro_version='2.2.6b'
+macro_revision='1.3017'
 _LT_DECL(, macro_version, 0, [Which release of libtool.m4 was used?])
 _LT_DECL(, macro_revision, 0)
 ])
@@ -7977,10 +7977,10 @@ m4_ifndef([_LT_AC_FILE_LTDLL_C],	[AC_DEFUN([_LT_AC_FILE_LTDLL_C])])
 # generated from the m4 files accompanying Automake X.Y.
 # (This private macro should not be called outside this file.)
 AC_DEFUN([AM_AUTOMAKE_VERSION],
-[am__api_version='1.10'
+[am__api_version='1.11'
 dnl Some users find AM_AUTOMAKE_VERSION and mistake it for a way to
 dnl require some minimum version.  Point them to the right macro.
-m4_if([$1], [1.10.2], [],
+m4_if([$1], [1.11], [],
      [AC_FATAL([Do not call $0, use AM_INIT_AUTOMAKE([$1]).])])dnl
 ])

@@ -7996,7 +7996,7 @@ m4_define([_AM_AUTOCONF_VERSION], [])
 # Call AM_AUTOMAKE_VERSION and AM_AUTOMAKE_VERSION so they can be traced.
 # This function is AC_REQUIREd by AM_INIT_AUTOMAKE.
 AC_DEFUN([AM_SET_CURRENT_AUTOMAKE_VERSION],
-[AM_AUTOMAKE_VERSION([1.10.2])dnl
+[AM_AUTOMAKE_VERSION([1.11])dnl
 m4_ifndef([AC_AUTOCONF_VERSION],
  [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
 _AM_AUTOCONF_VERSION(m4_defn([AC_AUTOCONF_VERSION]))])
@@ -8056,14 +8056,14 @@ am_aux_dir=`cd $ac_aux_dir && pwd`

 # AM_CONDITIONAL                                            -*- Autoconf -*-

-# Copyright (C) 1997, 2000, 2001, 2003, 2004, 2005, 2006
+# Copyright (C) 1997, 2000, 2001, 2003, 2004, 2005, 2006, 2008
 # Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.

-# serial 8
+# serial 9

 # AM_CONDITIONAL(NAME, SHELL-CONDITION)
 # -------------------------------------
@@ -8076,6 +8076,7 @@ AC_SUBST([$1_TRUE])dnl
 AC_SUBST([$1_FALSE])dnl
 _AM_SUBST_NOTMAKE([$1_TRUE])dnl
 _AM_SUBST_NOTMAKE([$1_FALSE])dnl
+m4_define([_AM_COND_VALUE_$1], [$2])dnl
 if $2; then
  $1_TRUE=
  $1_FALSE='#'
@@ -8089,14 +8090,14 @@ AC_CONFIG_COMMANDS_PRE(
 Usually this means the macro was only invoked conditionally.]])
 fi])])

-# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
+# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2009
 # Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.

-# serial 9
+# serial 10

 # There are a few dirty hacks below to avoid letting `AC_PROG_CC' be
 # written in clear, in which case automake, when reading aclocal.m4,
@@ -8153,6 +8154,16 @@ AC_CACHE_CHECK([dependency style of $depcc],
  if test "$am_compiler_list" = ""; then
     am_compiler_list=`sed -n ['s/^#*\([a-zA-Z0-9]*\))$/\1/p'] < ./depcomp`
  fi
+  am__universal=false
+  m4_case([$1], [CC],
+    [case " $depcc " in #(
+     *\ -arch\ *\ -arch\ *) am__universal=true ;;
+     esac],
+    [CXX],
+    [case " $depcc " in #(
+     *\ -arch\ *\ -arch\ *) am__universal=true ;;
+     esac])
+
  for depmode in $am_compiler_list; do
    # Setup a source with many dependencies, because some compilers
    # like to wrap large dependency lists on column 80 (with \), and
@@ -8170,7 +8181,17 @@ AC_CACHE_CHECK([dependency style of $depcc],
    done
    echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf

+    # We check with `-c' and `-o' for the sake of the "dashmstdout"
+    # mode.  It turns out that the SunPro C++ compiler does not properly
+    # handle `-M -o', and we need to detect this.  Also, some Intel
+    # versions had trouble with output in subdirs
+    am__obj=sub/conftest.${OBJEXT-o}
+    am__minus_obj="-o $am__obj"
    case $depmode in
+    gcc)
+      # This depmode causes a compiler race in universal mode.
+      test "$am__universal" = false || continue
+      ;;
    nosideeffect)
      # after this tag, mechanisms are not by side-effect, so they'll
      # only be used when explicitly requested
@@ -8180,19 +8201,23 @@ AC_CACHE_CHECK([dependency style of $depcc],
 	break
      fi
      ;;
+    msvisualcpp | msvcmsys)
+      # This compiler won't grok `-c -o', but also, the minuso test has
+      # not run yet.  These depmodes are late enough in the game, and
+      # so weak that their functioning should not be impacted.
+      am__obj=conftest.${OBJEXT-o}
+      am__minus_obj=
+      ;;
    none) break ;;
    esac
-    # We check with `-c' and `-o' for the sake of the "dashmstdout"
-    # mode.  It turns out that the SunPro C++ compiler does not properly
-    # handle `-M -o', and we need to detect this.
    if depmode=$depmode \
-       source=sub/conftest.c object=sub/conftest.${OBJEXT-o} \
+       source=sub/conftest.c object=$am__obj \
       depfile=sub/conftest.Po tmpdepfile=sub/conftest.TPo \
-       $SHELL ./depcomp $depcc -c -o sub/conftest.${OBJEXT-o} sub/conftest.c \
+       $SHELL ./depcomp $depcc -c $am__minus_obj sub/conftest.c \
         >/dev/null 2>conftest.err &&
       grep sub/conftst1.h sub/conftest.Po > /dev/null 2>&1 &&
       grep sub/conftst6.h sub/conftest.Po > /dev/null 2>&1 &&
-       grep sub/conftest.${OBJEXT-o} sub/conftest.Po > /dev/null 2>&1 &&
+       grep $am__obj sub/conftest.Po > /dev/null 2>&1 &&
       ${MAKE-make} -s -f confmf > /dev/null 2>&1; then
      # icc doesn't choke on unknown options, it will just issue warnings
      # or remarks (even with -Werror).  So we grep stderr for any message
@@ -8256,59 +8281,61 @@ _AM_SUBST_NOTMAKE([AMDEPBACKSLASH])dnl
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.

-#serial 4
+#serial 5

 # _AM_OUTPUT_DEPENDENCY_COMMANDS
 # ------------------------------
 AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
-[# Autoconf 2.62 quotes --file arguments for eval, but not when files
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-*)   set x $CONFIG_FILES ;;
-esac
-shift
-for mf
-do
-  # Strip MF so we end up with the name of the file.
-  mf=`echo "$mf" | sed -e 's/:.*$//'`
-  # Check whether this is an Automake generated Makefile or not.
-  # We used to match only the files named `Makefile.in', but
-  # some people rename them; so instead we look at the file content.
-  # Grep'ing the first line is not enough: some people post-process
-  # each Makefile.in and add a new line on top of each file to say so.
-  # Grep'ing the whole file is not good either: AIX grep has a line
-  # limit of 2048, but all sed's we know have understand at least 4000.
-  if sed -n 's,^#.*generated by automake.*,X,p' "$mf" | grep X >/dev/null 2>&1; then
-    dirpart=`AS_DIRNAME("$mf")`
-  else
-    continue
-  fi
-  # Extract the definition of DEPDIR, am__include, and am__quote
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-  DEPDIR=`sed -n 's/^DEPDIR = //p' < "$mf"`
-  test -z "$DEPDIR" && continue
-  am__include=`sed -n 's/^am__include = //p' < "$mf"`
-  test -z "am__include" && continue
-  am__quote=`sed -n 's/^am__quote = //p' < "$mf"`
-  # When using ansi2knr, U may be empty or an underscore; expand it
-  U=`sed -n 's/^U = //p' < "$mf"`
-  # Find all dependency output files, they are included files with
-  # $(DEPDIR) in their names.  We invoke sed twice because it is the
-  # simplest approach to changing $(DEPDIR) to its actual value in the
-  # expansion.
-  for file in `sed -n "
-    s/^$am__include $am__quote\(.*(DEPDIR).*\)$am__quote"'$/\1/p' <"$mf" | \
-       sed -e 's/\$(DEPDIR)/'"$DEPDIR"'/g' -e 's/\$U/'"$U"'/g'`; do
-    # Make sure the directory exists.
-    test -f "$dirpart/$file" && continue
-    fdir=`AS_DIRNAME(["$file"])`
-    AS_MKDIR_P([$dirpart/$fdir])
-    # echo "creating $dirpart/$file"
-    echo '# dummy' > "$dirpart/$file"
+[{
+  # Autoconf 2.62 quotes --file arguments for eval, but not when files
+  # are listed without --file.  Let's play safe and only enable the eval
+  # if we detect the quoting.
+  case $CONFIG_FILES in
+  *\'*) eval set x "$CONFIG_FILES" ;;
+  *)   set x $CONFIG_FILES ;;
+  esac
+  shift
+  for mf
+  do
+    # Strip MF so we end up with the name of the file.
+    mf=`echo "$mf" | sed -e 's/:.*$//'`
+    # Check whether this is an Automake generated Makefile or not.
+    # We used to match only the files named `Makefile.in', but
+    # some people rename them; so instead we look at the file content.
+    # Grep'ing the first line is not enough: some people post-process
+    # each Makefile.in and add a new line on top of each file to say so.
+    # Grep'ing the whole file is not good either: AIX grep has a line
+    # limit of 2048, but all sed's we know have understand at least 4000.
+    if sed -n 's,^#.*generated by automake.*,X,p' "$mf" | grep X >/dev/null 2>&1; then
+      dirpart=`AS_DIRNAME("$mf")`
+    else
+      continue
+    fi
+    # Extract the definition of DEPDIR, am__include, and am__quote
+    # from the Makefile without running `make'.
+    DEPDIR=`sed -n 's/^DEPDIR = //p' < "$mf"`
+    test -z "$DEPDIR" && continue
+    am__include=`sed -n 's/^am__include = //p' < "$mf"`
+    test -z "am__include" && continue
+    am__quote=`sed -n 's/^am__quote = //p' < "$mf"`
+    # When using ansi2knr, U may be empty or an underscore; expand it
+    U=`sed -n 's/^U = //p' < "$mf"`
+    # Find all dependency output files, they are included files with
+    # $(DEPDIR) in their names.  We invoke sed twice because it is the
+    # simplest approach to changing $(DEPDIR) to its actual value in the
+    # expansion.
+    for file in `sed -n "
+      s/^$am__include $am__quote\(.*(DEPDIR).*\)$am__quote"'$/\1/p' <"$mf" | \
+	 sed -e 's/\$(DEPDIR)/'"$DEPDIR"'/g' -e 's/\$U/'"$U"'/g'`; do
+      # Make sure the directory exists.
+      test -f "$dirpart/$file" && continue
+      fdir=`AS_DIRNAME(["$file"])`
+      AS_MKDIR_P([$dirpart/$fdir])
+      # echo "creating $dirpart/$file"
+      echo '# dummy' > "$dirpart/$file"
+    done
  done
-done
+}
 ])# _AM_OUTPUT_DEPENDENCY_COMMANDS


@@ -8340,13 +8367,13 @@ AU_DEFUN([AM_CONFIG_HEADER], [AC_CONFIG_HEADERS($@)])
 # Do all the work for Automake.                             -*- Autoconf -*-

 # Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-# 2005, 2006, 2008 Free Software Foundation, Inc.
+# 2005, 2006, 2008, 2009 Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.

-# serial 13
+# serial 16

 # This macro actually does too much.  Some checks are only needed if
 # your package does certain things.  But this isn't really a big deal.
@@ -8363,7 +8390,7 @@ AU_DEFUN([AM_CONFIG_HEADER], [AC_CONFIG_HEADERS($@)])
 # arguments mandatory, and then we can depend on a new Autoconf
 # release and drop the old call support.
 AC_DEFUN([AM_INIT_AUTOMAKE],
-[AC_PREREQ([2.60])dnl
+[AC_PREREQ([2.62])dnl
 dnl Autoconf wants to disallow AM_ names.  We explicitly allow
 dnl the ones we care about.
 m4_pattern_allow([^AM_[A-Z]+FLAGS$])dnl
@@ -8414,8 +8441,8 @@ AM_MISSING_PROG(AUTOCONF, autoconf)
 AM_MISSING_PROG(AUTOMAKE, automake-${am__api_version})
 AM_MISSING_PROG(AUTOHEADER, autoheader)
 AM_MISSING_PROG(MAKEINFO, makeinfo)
-AM_PROG_INSTALL_SH
-AM_PROG_INSTALL_STRIP
+AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
+AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
 AC_REQUIRE([AM_PROG_MKDIR_P])dnl
 # We need awk for the "check" target.  The system "awk" is bad on
 # some platforms.
@@ -8423,24 +8450,37 @@ AC_REQUIRE([AC_PROG_AWK])dnl
 AC_REQUIRE([AC_PROG_MAKE_SET])dnl
 AC_REQUIRE([AM_SET_LEADING_DOT])dnl
 _AM_IF_OPTION([tar-ustar], [_AM_PROG_TAR([ustar])],
-              [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
-	      		     [_AM_PROG_TAR([v7])])])
+	      [_AM_IF_OPTION([tar-pax], [_AM_PROG_TAR([pax])],
+			     [_AM_PROG_TAR([v7])])])
 _AM_IF_OPTION([no-dependencies],,
 [AC_PROVIDE_IFELSE([AC_PROG_CC],
-                  [_AM_DEPENDENCIES(CC)],
-                  [define([AC_PROG_CC],
-                          defn([AC_PROG_CC])[_AM_DEPENDENCIES(CC)])])dnl
+		  [_AM_DEPENDENCIES(CC)],
+		  [define([AC_PROG_CC],
+			  defn([AC_PROG_CC])[_AM_DEPENDENCIES(CC)])])dnl
 AC_PROVIDE_IFELSE([AC_PROG_CXX],
-                  [_AM_DEPENDENCIES(CXX)],
-                  [define([AC_PROG_CXX],
-                          defn([AC_PROG_CXX])[_AM_DEPENDENCIES(CXX)])])dnl
+		  [_AM_DEPENDENCIES(CXX)],
+		  [define([AC_PROG_CXX],
+			  defn([AC_PROG_CXX])[_AM_DEPENDENCIES(CXX)])])dnl
 AC_PROVIDE_IFELSE([AC_PROG_OBJC],
-                  [_AM_DEPENDENCIES(OBJC)],
-                  [define([AC_PROG_OBJC],
-                          defn([AC_PROG_OBJC])[_AM_DEPENDENCIES(OBJC)])])dnl
+		  [_AM_DEPENDENCIES(OBJC)],
+		  [define([AC_PROG_OBJC],
+			  defn([AC_PROG_OBJC])[_AM_DEPENDENCIES(OBJC)])])dnl
 ])
+_AM_IF_OPTION([silent-rules], [AC_REQUIRE([AM_SILENT_RULES])])dnl
+dnl The `parallel-tests' driver may need to know about EXEEXT, so add the
+dnl `am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen.  This macro
+dnl is hooked onto _AC_COMPILER_EXEEXT early, see below.
+AC_CONFIG_COMMANDS_PRE(dnl
+[m4_provide_if([_AM_COMPILER_EXEEXT],
+  [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
 ])

+dnl Hook into `_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
+dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
+dnl mangled by Autoconf and run in a shell conditional statement.
+m4_define([_AC_COMPILER_EXEEXT],
+m4_defn([_AC_COMPILER_EXEEXT])[m4_provide([_AM_COMPILER_EXEEXT])])
+

 # When config.status generates a header, we must update the stamp-h file.
 # This file resides in the same directory as the config header
@@ -8463,7 +8503,7 @@ for _am_header in $config_headers :; do
 done
 echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])

-# Copyright (C) 2001, 2003, 2005  Free Software Foundation, Inc.
+# Copyright (C) 2001, 2003, 2005, 2008  Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
@@ -8474,7 +8514,14 @@ echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_co
 # Define $install_sh.
 AC_DEFUN([AM_PROG_INSTALL_SH],
 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
-install_sh=${install_sh-"\$(SHELL) $am_aux_dir/install-sh"}
+if test x"${install_sh}" != xset; then
+  case $am_aux_dir in
+  *\ * | *\	*)
+    install_sh="\${SHELL} '$am_aux_dir/install-sh'" ;;
+  *)
+    install_sh="\${SHELL} $am_aux_dir/install-sh"
+  esac
+fi
 AC_SUBST(install_sh)])

 # Copyright (C) 2003, 2005  Free Software Foundation, Inc.
@@ -8501,27 +8548,38 @@ AC_SUBST([am__leading_dot])])
 # Add --enable-maintainer-mode option to configure.         -*- Autoconf -*-
 # From Jim Meyering

-# Copyright (C) 1996, 1998, 2000, 2001, 2002, 2003, 2004, 2005
+# Copyright (C) 1996, 1998, 2000, 2001, 2002, 2003, 2004, 2005, 2008
 # Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.

-# serial 4
+# serial 5

+# AM_MAINTAINER_MODE([DEFAULT-MODE])
+# ----------------------------------
+# Control maintainer-specific portions of Makefiles.
+# Default is to disable them, unless `enable' is passed literally.
+# For symmetry, `disable' may be passed as well.  Anyway, the user
+# can override the default with the --enable/--disable switch.
 AC_DEFUN([AM_MAINTAINER_MODE],
-[AC_MSG_CHECKING([whether to enable maintainer-specific portions of Makefiles])
-  dnl maintainer-mode is disabled by default
-  AC_ARG_ENABLE(maintainer-mode,
-[  --enable-maintainer-mode  enable make rules and dependencies not useful
+[m4_case(m4_default([$1], [disable]),
+       [enable], [m4_define([am_maintainer_other], [disable])],
+       [disable], [m4_define([am_maintainer_other], [enable])],
+       [m4_define([am_maintainer_other], [enable])
+        m4_warn([syntax], [unexpected argument to AM@&t@_MAINTAINER_MODE: $1])])
+AC_MSG_CHECKING([whether to am_maintainer_other maintainer-specific portions of Makefiles])
+  dnl maintainer-mode's default is 'disable' unless 'enable' is passed
+  AC_ARG_ENABLE([maintainer-mode],
+[  --][am_maintainer_other][-maintainer-mode  am_maintainer_other make rules and dependencies not useful
 			  (and sometimes confusing) to the casual installer],
-      USE_MAINTAINER_MODE=$enableval,
-      USE_MAINTAINER_MODE=no)
+      [USE_MAINTAINER_MODE=$enableval],
+      [USE_MAINTAINER_MODE=]m4_if(am_maintainer_other, [enable], [no], [yes]))
  AC_MSG_RESULT([$USE_MAINTAINER_MODE])
-  AM_CONDITIONAL(MAINTAINER_MODE, [test $USE_MAINTAINER_MODE = yes])
+  AM_CONDITIONAL([MAINTAINER_MODE], [test $USE_MAINTAINER_MODE = yes])
  MAINT=$MAINTAINER_MODE_TRUE
-  AC_SUBST(MAINT)dnl
+  AC_SUBST([MAINT])dnl
 ]
 )

@@ -8529,13 +8587,13 @@ AU_DEFUN([jm_MAINTAINER_MODE], [AM_MAINTAINER_MODE])

 # Check to see how 'make' treats includes.	            -*- Autoconf -*-

-# Copyright (C) 2001, 2002, 2003, 2005  Free Software Foundation, Inc.
+# Copyright (C) 2001, 2002, 2003, 2005, 2009  Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.

-# serial 3
+# serial 4

 # AM_MAKE_INCLUDE()
 # -----------------
@@ -8544,7 +8602,7 @@ AC_DEFUN([AM_MAKE_INCLUDE],
 [am_make=${MAKE-make}
 cat > confinc << 'END'
 am__doit:
-	@echo done
+	@echo this is the am__doit target
 .PHONY: am__doit
 END
 # If we don't find an include directive, just comment out the code.
@@ -8554,24 +8612,24 @@ am__quote=
 _am_result=none
 # First try GNU make style include.
 echo "include confinc" > confmf
-# We grep out `Entering directory' and `Leaving directory'
-# messages which can occur if `w' ends up in MAKEFLAGS.
-# In particular we don't look at `^make:' because GNU make might
-# be invoked under some other name (usually "gmake"), in which
-# case it prints its new name instead of `make'.
-if test "`$am_make -s -f confmf 2> /dev/null | grep -v 'ing directory'`" = "done"; then
-   am__include=include
-   am__quote=
-   _am_result=GNU
-fi
+# Ignore all kinds of additional output from `make'.
+case `$am_make -s -f confmf 2> /dev/null` in #(
+*the\ am__doit\ target*)
+  am__include=include
+  am__quote=
+  _am_result=GNU
+  ;;
+esac
 # Now try BSD make style include.
 if test "$am__include" = "#"; then
   echo '.include "confinc"' > confmf
-   if test "`$am_make -s -f confmf 2> /dev/null`" = "done"; then
-      am__include=.include
-      am__quote="\""
-      _am_result=BSD
-   fi
+   case `$am_make -s -f confmf 2> /dev/null` in #(
+   *the\ am__doit\ target*)
+     am__include=.include
+     am__quote="\""
+     _am_result=BSD
+     ;;
+   esac
 fi
 AC_SUBST([am__include])
 AC_SUBST([am__quote])
@@ -8581,14 +8639,14 @@ rm -f confinc confmf

 # Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-

-# Copyright (C) 1997, 1999, 2000, 2001, 2003, 2004, 2005
+# Copyright (C) 1997, 1999, 2000, 2001, 2003, 2004, 2005, 2008
 # Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.

-# serial 5
+# serial 6

 # AM_MISSING_PROG(NAME, PROGRAM)
 # ------------------------------
@@ -8605,7 +8663,14 @@ AC_SUBST($1)])
 AC_DEFUN([AM_MISSING_HAS_RUN],
 [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
 AC_REQUIRE_AUX_FILE([missing])dnl
-test x"${MISSING+set}" = xset || MISSING="\${SHELL} $am_aux_dir/missing"
+if test x"${MISSING+set}" != xset; then
+  case $am_aux_dir in
+  *\ * | *\	*)
+    MISSING="\${SHELL} \"$am_aux_dir/missing\"" ;;
+  *)
+    MISSING="\${SHELL} $am_aux_dir/missing" ;;
+  esac
+fi
 # Use eval to expand $SHELL
 if eval "$MISSING --run true"; then
  am_missing_run="$MISSING --run "
@@ -8676,14 +8741,14 @@ AC_DEFUN([_AM_IF_OPTION],

 # Check to make sure that the build environment is sane.    -*- Autoconf -*-

-# Copyright (C) 1996, 1997, 2000, 2001, 2003, 2005
+# Copyright (C) 1996, 1997, 2000, 2001, 2003, 2005, 2008
 # Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.

-# serial 4
+# serial 5

 # AM_SANITY_CHECK
 # ---------------
@@ -8692,16 +8757,29 @@ AC_DEFUN([AM_SANITY_CHECK],
 # Just in case
 sleep 1
 echo timestamp > conftest.file
+# Reject unsafe characters in $srcdir or the absolute working directory
+# name.  Accept space and tab only in the latter.
+am_lf='
+'
+case `pwd` in
+  *[[\\\"\#\$\&\'\`$am_lf]]*)
+    AC_MSG_ERROR([unsafe absolute working directory name]);;
+esac
+case $srcdir in
+  *[[\\\"\#\$\&\'\`$am_lf\ \	]]*)
+    AC_MSG_ERROR([unsafe srcdir value: `$srcdir']);;
+esac
+
 # Do `set' in a subshell so we don't clobber the current shell's
 # arguments.  Must try -L first in case configure is actually a
 # symlink; some systems play weird games with the mod time of symlinks
 # (eg FreeBSD returns the mod time of the symlink's containing
 # directory).
 if (
-   set X `ls -Lt $srcdir/configure conftest.file 2> /dev/null`
+   set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
   if test "$[*]" = "X"; then
      # -L didn't work.
-      set X `ls -t $srcdir/configure conftest.file`
+      set X `ls -t "$srcdir/configure" conftest.file`
   fi
   rm -f conftest.file
   if test "$[*]" != "X $srcdir/configure conftest.file" \
@@ -8754,18 +8832,25 @@ fi
 INSTALL_STRIP_PROGRAM="\$(install_sh) -c -s"
 AC_SUBST([INSTALL_STRIP_PROGRAM])])

-# Copyright (C) 2006  Free Software Foundation, Inc.
+# Copyright (C) 2006, 2008  Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation
 # gives unlimited permission to copy and/or distribute it,
 # with or without modifications, as long as this notice is preserved.

+# serial 2
+
 # _AM_SUBST_NOTMAKE(VARIABLE)
 # ---------------------------
 # Prevent Automake from outputting VARIABLE = @VARIABLE@ in Makefile.in.
 # This macro is traced by Automake.
 AC_DEFUN([_AM_SUBST_NOTMAKE])

+# AM_SUBST_NOTMAKE(VARIABLE)
+# ---------------------------
+# Public sister of _AM_SUBST_NOTMAKE.
+AC_DEFUN([AM_SUBST_NOTMAKE], [_AM_SUBST_NOTMAKE($@)])
+
 # Check how to create a tarball.                            -*- Autoconf -*-

 # Copyright (C) 2004, 2005  Free Software Foundation, Inc.
--- a/config.guess
+++ b/config.guess
@@ -4,7 +4,7 @@
 #   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
 #   Free Software Foundation, Inc.

-timestamp='2008-11-15'
+timestamp='2009-04-27'

 # This file is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by
@@ -324,6 +324,9 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
 	case `/usr/bin/uname -p` in
 	    sparc) echo sparc-icl-nx7; exit ;;
 	esac ;;
+    s390x:SunOS:*:*)
+	echo ${UNAME_MACHINE}-ibm-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+	exit ;;
    sun4H:SunOS:5.*:*)
 	echo sparc-hal-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
 	exit ;;
@@ -337,7 +340,7 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
 	# Note that the Sun cc does not turn __LP64__ into 1 like gcc does.
 	# This test works for both compilers.
 	if [ "$CC_FOR_BUILD" != 'no_compiler_found' ]; then
-	    if echo '\n#ifdef __amd64\nIS_64BIT_ARCH\n#endif' | \
+	    if (echo '#ifdef __amd64'; echo IS_64BIT_ARCH; echo '#endif') | \
 		(CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) | \
 		grep IS_64BIT_ARCH >/dev/null
 	    then
@@ -1115,8 +1118,11 @@ EOF
    pc:*:*:*)
 	# Left here for compatibility:
        # uname -m prints for DJGPP always 'pc', but it prints nothing about
-        # the processor, so we play safe by assuming i386.
-	echo i386-pc-msdosdjgpp
+        # the processor, so we play safe by assuming i586.
+	# Note: whatever this is, it MUST be the same as what config.sub
+	# prints for the "djgpp" host, or else GDB configury will decide that
+	# this is a cross-build.
+	echo i586-pc-msdosdjgpp
        exit ;;
    Intel:Mach:3*:*)
 	echo i386-pc-mach3
@@ -1154,6 +1160,16 @@ EOF
    3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*)
        /bin/uname -p 2>/dev/null | grep 86 >/dev/null \
          && { echo i486-ncr-sysv4; exit; } ;;
+    NCR*:*:4.2:* | MPRAS*:*:4.2:*)
+	OS_REL='.3'
+	test -r /etc/.relid \
+	    && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid`
+	/bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+	    && { echo i486-ncr-sysv4.3${OS_REL}; exit; }
+	/bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
+	    && { echo i586-ncr-sysv4.3${OS_REL}; exit; }
+	/bin/uname -p 2>/dev/null | /bin/grep pteron >/dev/null \
+	    && { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;;
    m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*)
 	echo m68k-unknown-lynxos${UNAME_RELEASE}
 	exit ;;
@@ -1340,6 +1356,9 @@ EOF
    i*86:rdos:*:*)
 	echo ${UNAME_MACHINE}-pc-rdos
 	exit ;;
+    i*86:AROS:*:*)
+	echo ${UNAME_MACHINE}-pc-aros
+	exit ;;
 esac

 #echo '(No uname command or uname output not recognized.)' 1>&2
--- a/config.h.in
+++ b/config.h.in
@@ -64,6 +64,9 @@
 /* Define to the one symbol short name of this package. */
 #undef PACKAGE_TARNAME

+/* Define to the home page for this package. */
+#undef PACKAGE_URL
+
 /* Define to the version of this package. */
 #undef PACKAGE_VERSION

--- a/config.sub
+++ b/config.sub
@@ -4,7 +4,7 @@
 #   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
 #   Free Software Foundation, Inc.

-timestamp='2008-09-08'
+timestamp='2009-04-17'

 # This file is (in principle) common to ALL GNU software.
 # The presence of a machine in this file suggests that SOME GNU software
@@ -122,6 +122,7 @@ maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'`
 case $maybe_os in
  nto-qnx* | linux-gnu* | linux-dietlibc | linux-newlib* | linux-uclibc* | \
  uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | knetbsd*-gnu* | netbsd*-gnu* | \
+  kopensolaris*-gnu* | \
  storm-chaos* | os2-emx* | rtmk-nova*)
    os=-$maybe_os
    basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`
@@ -249,6 +250,7 @@ case $basic_machine in
 	| h8300 | h8500 | hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \
 	| i370 | i860 | i960 | ia64 \
 	| ip2k | iq2000 \
+	| lm32 \
 	| m32c | m32r | m32rle | m68000 | m68k | m88k \
 	| maxq | mb | microblaze | mcore | mep | metag \
 	| mips | mipsbe | mipseb | mipsel | mipsle \
@@ -270,6 +272,7 @@ case $basic_machine in
 	| mipsisa64sr71k | mipsisa64sr71kel \
 	| mipstx39 | mipstx39el \
 	| mn10200 | mn10300 \
+	| moxie \
 	| mt \
 	| msp430 \
 	| nios | nios2 \
@@ -279,7 +282,7 @@ case $basic_machine in
 	| powerpc | powerpc64 | powerpc64le | powerpcle | ppcbe \
 	| pyramid \
 	| score \
-	| sh | sh[1234] | sh[24]a | sh[23]e | sh[34]eb | sheb | shbe | shle | sh[1234]le | sh3ele \
+	| sh | sh[1234] | sh[24]a | sh[24]aeb | sh[23]e | sh[34]eb | sheb | shbe | shle | sh[1234]le | sh3ele \
 	| sh64 | sh64le \
 	| sparc | sparc64 | sparc64b | sparc64v | sparc86x | sparclet | sparclite \
 	| sparcv8 | sparcv9 | sparcv9b | sparcv9v \
@@ -331,6 +334,7 @@ case $basic_machine in
 	| hppa-* | hppa1.[01]-* | hppa2.0-* | hppa2.0[nw]-* | hppa64-* \
 	| i*86-* | i860-* | i960-* | ia64-* \
 	| ip2k-* | iq2000-* \
+	| lm32-* \
 	| m32c-* | m32r-* | m32rle-* \
 	| m68000-* | m680[012346]0-* | m68360-* | m683?2-* | m68k-* \
 	| m88110-* | m88k-* | maxq-* | mcore-* | metag-* \
@@ -362,7 +366,7 @@ case $basic_machine in
 	| powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* | ppcbe-* \
 	| pyramid-* \
 	| romp-* | rs6000-* \
-	| sh-* | sh[1234]-* | sh[24]a-* | sh[23]e-* | sh[34]eb-* | sheb-* | shbe-* \
+	| sh-* | sh[1234]-* | sh[24]a-* | sh[24]aeb-* | sh[23]e-* | sh[34]eb-* | sheb-* | shbe-* \
 	| shle-* | sh[1234]le-* | sh3ele-* | sh64-* | sh64le-* \
 	| sparc-* | sparc64-* | sparc64b-* | sparc64v-* | sparc86x-* | sparclet-* \
 	| sparclite-* \
@@ -443,6 +447,10 @@ case $basic_machine in
 		basic_machine=m68k-apollo
 		os=-bsd
 		;;
+	aros)
+		basic_machine=i386-pc
+		os=-aros
+		;;
 	aux)
 		basic_machine=m68k-apple
 		os=-aux
@@ -1182,7 +1190,7 @@ case $basic_machine in
 	we32k)
 		basic_machine=we32k-att
 		;;
-	sh[1234] | sh[24]a | sh[34]eb | sh[1234]le | sh[23]ele)
+	sh[1234] | sh[24]a | sh[24]aeb | sh[34]eb | sh[1234]le | sh[23]ele)
 		basic_machine=sh-unknown
 		;;
 	sparc | sparcv8 | sparcv9 | sparcv9b | sparcv9v)
@@ -1254,8 +1262,9 @@ case $os in
 	-gnu* | -bsd* | -mach* | -minix* | -genix* | -ultrix* | -irix* \
 	      | -*vms* | -sco* | -esix* | -isc* | -aix* | -sunos | -sunos[34]*\
 	      | -hpux* | -unos* | -osf* | -luna* | -dgux* | -solaris* | -sym* \
+	      | -kopensolaris* \
 	      | -amigaos* | -amigados* | -msdos* | -newsos* | -unicos* | -aof* \
-	      | -aos* \
+	      | -aos* | -aros* \
 	      | -nindy* | -vxsim* | -vxworks* | -ebmon* | -hms* | -mvs* \
 	      | -clix* | -riscos* | -uniplus* | -iris* | -rtu* | -xenix* \
 	      | -hiux* | -386bsd* | -knetbsd* | -mirbsd* | -netbsd* \
--- a/5792
+++ b/5792
--- a/configure.ac
+++ b/configure.ac
@@ -18,12 +18,12 @@ AC_PREREQ(2.59)

 dnl Version number stuff here:

-AC_INIT([libpng], [1.4.0beta66], [png-mng-implement@lists.sourceforge.net])
+AC_INIT([libpng], [1.4.0beta104], [png-mng-implement@lists.sourceforge.net])
 AM_INIT_AUTOMAKE
 dnl stop configure from automagically running automake
 AM_MAINTAINER_MODE

-PNGLIB_VERSION=1.4.0beta66
+PNGLIB_VERSION=1.4.0beta104
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=4
 PNGLIB_RELEASE=0
@@ -116,23 +116,9 @@ AC_ARG_WITH(binconfigs,
 	[binconfigs='${binconfigs}'])
 AC_SUBST([binconfigs])

-# Allow the old version number library, libpng.so, to be removed from
-# the build
-AC_ARG_WITH(libpng-compat,
-	AC_HELP_STRING([--with-libpng-compat],
-		[Generate the obsolete libpng.so library @<:@default=yes@:>@]),
-	[if test "${withval}" = no; then
-		compatlib=
-		AC_MSG_NOTICE([libpng.so will not be built])
-	else
-		compatlib=libpng.la
-	fi],
-	[compatlib=libpng.la])
-AC_SUBST([compatlib])
-
 # Config files, substituting as above
-AC_CONFIG_FILES([Makefile libpng.pc:scripts/libpng.pc-configure.in])
-AC_CONFIG_FILES([libpng-config:scripts/libpng-config.in],
+AC_CONFIG_FILES([Makefile libpng.pc:libpng-pc.in])
+AC_CONFIG_FILES([libpng-config:libpng-config.in],
 		[chmod +x libpng-config])

 AC_OUTPUT
--- a/contrib/gregbook/Makefile.sgi
+++ b/contrib/gregbook/Makefile.sgi
@@ -23,9 +23,9 @@

 # macros --------------------------------------------------------------------

-PNGINC = -I/usr/local/include/libpng%NN%
-PNGLIB = -L/usr/local/lib -lpng%NN%	  # dynamically linked against libpng
-#PNGLIB = /usr/local/lib/libpng%NN%.a # statically linked against libpng
+PNGINC = -I/usr/local/include/libpng14
+PNGLIB = -L/usr/local/lib -lpng14	  # dynamically linked against libpng
+#PNGLIB = /usr/local/lib/libpng14.a # statically linked against libpng
 # or:
 #PNGINC = -I../..
 #PNGLIB = -L../.. -lpng
--- a/contrib/gregbook/Makefile.unx
+++ b/contrib/gregbook/Makefile.unx
@@ -26,14 +26,14 @@
 # macros --------------------------------------------------------------------

 #PNGDIR = /usr/local/lib
-#PNGINC = -I/usr/local/include/libpng%NN%
-#PNGLIBd = -L$(PNGDIR) -lpng%NN% # dynamically linked, installed libpng
-#PNGLIBs = $(PNGDIR)/libpng%NN%.a # statically linked, installed libpng
+#PNGINC = -I/usr/local/include/libpng14
+#PNGLIBd = -L$(PNGDIR) -lpng14 # dynamically linked, installed libpng
+#PNGLIBs = $(PNGDIR)/libpng14.a # statically linked, installed libpng
 # or:
 PNGDIR = ../..#	this one is for libpng-x.y.z/contrib/gregbook builds
 #PNGDIR = ../libpng
 PNGINC = -I$(PNGDIR)
-PNGLIBd = -Wl,-rpath,$(PNGDIR) -L$(PNGDIR) -lpng%NN%	# dynamically linked
+PNGLIBd = -Wl,-rpath,$(PNGDIR) -L$(PNGDIR) -lpng14	# dynamically linked
 PNGLIBs = $(PNGDIR)/libpng.a		# statically linked, local libpng

 ZDIR = /usr/local/lib
--- a/contrib/gregbook/readpng2.c
+++ b/contrib/gregbook/readpng2.c
@@ -159,7 +159,7 @@ void readpng2_version_info(void)

 int readpng2_check_sig(uch *sig, int num)
 {
-    return (!png_sig_cmp(sig, 0, num));
+    return !png_sig_cmp(sig, 0, num);
 }


@@ -379,6 +379,7 @@ static void readpng2_info_callback(png_structp png_ptr, png_infop info_ptr)
 {
    mainprog_info  *mainprog_ptr;
    int  color_type, bit_depth;
+    png_uint_32 width, height;
    double  gamma;


@@ -414,8 +415,10 @@ static void readpng2_info_callback(png_structp png_ptr, png_infop info_ptr)

    /* this is just like in the non-progressive case */

-    png_get_IHDR(png_ptr, info_ptr, &mainprog_ptr->width,
-      &mainprog_ptr->height, &bit_depth, &color_type, NULL, NULL, NULL);
+    png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type,
+       NULL, NULL, NULL);
+    mainprog_ptr->width = (ulg)width;
+    mainprog_ptr->height = (ulg)height;


    /* since we know we've read all of the PNG file's "header" (i.e., up
--- a/contrib/pngminim/decoder/gather.sh
+++ b/contrib/pngminim/decoder/gather.sh
@@ -1,7 +1,7 @@
 cp ../../pngminus/png2pnm.c pngm2pnm.c
 cp ../../../*.h .
 cp ../../../*.c .
-rm example.c pnggccrd.c pngvcrd.c pngtest.c pngpread.c pngw*.c
+rm example.c pngtest.c pngpread.c pngw*.c
 # change the following 2 lines if zlib is somewhere else
 cp ../../../../zlib/*.h .
 cp ../../../../zlib/*.c .
--- a/contrib/pngminim/decoder/makefile
+++ b/contrib/pngminim/decoder/makefile
@@ -7,7 +7,7 @@ LD=$(CC)

 RM=rm -f

-CFLAGS=-DPNG_USER_CONFIG -DNO_GZCOMPRESS -DNO_GZIP \
+CFLAGS=-DPNG_CONFIGURE_LIBPNG -DPNG_USER_CONFIG -DNO_GZCOMPRESS -DNO_GZIP \
       -DdeflateParams\(a,b,c\)=Z_OK -I. -O1

 C=.c
@@ -25,7 +25,7 @@ OBJS  = pngm2pnm$(O) png$(O) pngerror$(O) pngget$(O) pngmem$(O) \

 # implicit make rules -------------------------------------------------------

-.c$(O): png.h pngconf.h pngusr.h zlib.h
+.c$(O): png.h pngconf.h pngpriv.h pngusr.h zlib.h
 	$(CC) -c $(CFLAGS) $<

 # dependencies
--- a/contrib/pngminim/decoder/pngusr.h
+++ b/contrib/pngminim/decoder/pngusr.h
@@ -16,8 +16,6 @@
  /* No 16-bit support beyond reading with strip_16 */
 #endif

-#define PNG_NO_GLOBAL_ARRAYS
-
 #define PNG_NO_WARNINGS
 #define png_warning(s1,s2) ""
 #define png_chunk_warning(s1,s2) ""
@@ -25,8 +23,6 @@
 #define png_error(s1,s2) png_err(s1)
 #define png_chunk_error(s1,s2) png_err(s1)

-#define PNG_NO_ASSEMBLER_CODE
-#define PNG_NO_OPTIMIZED_CODE
 #define PNG_NO_READ_GAMMA
 #define PNG_NO_READ_BACKGROUND
 #define PNG_NO_READ_DITHER
@@ -59,7 +55,6 @@
 #define PNG_NO_READ_OPT_PLTE
 #define PNG_NO_READ_STRIP_ALPHA
 #define PNG_NO_READ_oFFs
-#define PNG_NO_WARN_UNINITIALIZED_ROW

 #define PNG_NO_WRITE_SUPPORTED

--- a/contrib/pngminim/encoder/gather.sh
+++ b/contrib/pngminim/encoder/gather.sh
@@ -1,7 +1,7 @@
 cp ../../pngminus/pnm2png.c pnm2pngm.c
 cp ../../../*.h .
 cp ../../../*.c .
-rm example.c pnggccrd.c pngvcrd.c pngtest.c pngr*.c pngpread.c
+rm example.c pngtest.c pngr*.c pngpread.c
 # Change the next 2 lines if zlib is somewhere else.
 cp ../../../../zlib/*.h .
 cp ../../../../zlib/*.c .
--- a/contrib/pngminim/encoder/makefile
+++ b/contrib/pngminim/encoder/makefile
@@ -7,7 +7,7 @@ LD=$(CC)

 RM=rm -f

-CFLAGS=-DPNG_USER_CONFIG -DNO_GZIP -I. -O1
+CFLAGS=-DPNG_CONFIGURE_LIBPNG -DPNG_USER_CONFIG -DNO_GZIP -I. -O1

 C=.c
 O=.o
@@ -24,7 +24,7 @@ OBJS  = pnm2pngm$(O) png$(O) pngerror$(O) pngget$(O) pngmem$(O) \

 # implicit make rules -------------------------------------------------------

-.c$(O): png.h pngconf.h pngusr.h zlib.h
+.c$(O): png.h pngconf.h pngpriv.h pngusr.h zlib.h
 	$(CC) -c $(CFLAGS) $<

 # dependencies
--- a/contrib/pngminim/encoder/pngusr.h
+++ b/contrib/pngminim/encoder/pngusr.h
@@ -12,8 +12,6 @@
 #ifndef MINWRPNGCONF_H
 #define MINWRPNGCONF_H

-#define PNG_NO_GLOBAL_ARRAYS
-
 #define PNG_NO_READ_SUPPORTED

 #define PNG_NO_WARNINGS
--- a/contrib/pngminim/preader/gather.sh
+++ b/contrib/pngminim/preader/gather.sh
@@ -2,7 +2,7 @@ cp ../../gregbook/rpng2-x.c ../../gregbook/readpng2.[ch] .
 cp ../../gregbook/COPYING ../../gregbook/LICENSE .
 cp ../../../*.h .
 cp ../../../*.c .
-rm example.c pnggccrd.c pngvcrd.c pngtest.c pngw*.c
+rm example.c pngtest.c pngw*.c
 # change the following 2 lines if zlib is somewhere else
 cp ../../../../zlib/*.h .
 cp ../../../../zlib/*.c .
--- a/contrib/pngminim/preader/makefile
+++ b/contrib/pngminim/preader/makefile
@@ -23,7 +23,7 @@ XLIB = -L/usr/X11R6/lib -lX11
 #LIBS = $(XLIB)
 LIBS = $(XLIB) -lm                      #platforms that need libm

-CFLAGS=-DPNG_USER_CONFIG -DNO_GZCOMPRESS -DNO_GZIP \
+CFLAGS=-DPNG_CONFIGURE_LIBPNG -DPNG_USER_CONFIG -DNO_GZCOMPRESS -DNO_GZIP \
       -DdeflateParams\(a,b,c\)=Z_OK -I. $(XINC) -O1

 C=.c
@@ -41,7 +41,7 @@ OBJS  = rpng2-x$(O) readpng2$(O) png$(O) pngerror$(O) pngget$(O) pngmem$(O) \

 # implicit make rules -------------------------------------------------------

-.c$(O): png.h pngconf.h readpng2.h pngusr.h zlib.h
+.c$(O): png.h pngconf.h pngpriv.h readpng2.h pngusr.h zlib.h
 	$(CC) -c $(CFLAGS) $<

 # dependencies
--- a/contrib/pngminim/preader/pngusr.h
+++ b/contrib/pngminim/preader/pngusr.h
@@ -12,8 +12,6 @@
 #ifndef MINPRDPNGCONF_H
 #define MINPRDPNGCONF_H

-#define PNG_NO_GLOBAL_ARRAYS
-
 #define PNG_NO_WARNINGS
 #define png_warning(s1,s2) ""
 #define png_chunk_warning(s1,s2) ""
@@ -21,8 +19,6 @@
 #define png_error(s1,s2) png_err(s1)
 #define png_chunk_error(s1,s2) png_err(s1)

-#define PNG_NO_ASSEMBLER_CODE
-#define PNG_NO_OPTIMIZED_CODE
 #define PNG_NO_READ_DITHER
 #define PNG_NO_READ_INVERT
 #define PNG_NO_READ_SHIFT
@@ -50,7 +46,6 @@
 #define PNG_NO_READ_OPT_PLTE
 #define PNG_NO_READ_STRIP_ALPHA
 #define PNG_NO_READ_oFFs
-#define PNG_NO_WARN_UNINITIALIZED_ROW

 #define PNG_NO_WRITE_SUPPORTED

--- a/contrib/pngminus/png2pnm.c
+++ b/contrib/pngminus/png2pnm.c
@@ -211,8 +211,8 @@ BOOL png2pnm (FILE *png_file, FILE *pnm_file, FILE *alpha_file, BOOL raw, BOOL a
  if (ret != 8)
    return FALSE;

-  ret = png_check_sig (buf, 8);
-  if (!ret)
+  ret = png_sig_cmp (buf, 0, 8);
+  if (ret)
    return FALSE;

  /* create png and info structures */
--- a/contrib/visupng/PngFile.c
+++ b/contrib/visupng/PngFile.c
@@ -5,8 +5,8 @@
 // Copyright 2000, Willem van Schaik.
 //
 // This code is released under the libpng license.
-// For conditions of distribution and use, see the
-// copyright/license/disclaimer notice in png.h
+// For conditions of distribution and use, see the disclaimer
+// and license in png.h

 #include <windows.h>
 #include <commdlg.h>
@@ -35,7 +35,7 @@ png_cexcept_error(png_structp png_ptr, png_const_charp msg)
 {
   if(png_ptr)
     ;
-#ifndef PNG_NO_CONSOLE_IO
+#ifdef PNG_CONSOLE_IO_SUPPORTED
   fprintf(stderr, "libpng error: %s\n", msg);
 #endif
   {
@@ -126,7 +126,7 @@ BOOL PngLoadImage (PTSTR pstrFileName, png_byte **ppbImageData,
    // first check the eight byte PNG signature

    fread(pbSig, 1, 8, pfFile);
-    if (!png_check_sig(pbSig, 8))
+    if (png_sig_cmp(pbSig, 0, 8))
    {
        *ppbImageData = pbImageData = NULL;
        return FALSE;
@@ -155,7 +155,7 @@ BOOL PngLoadImage (PTSTR pstrFileName, png_byte **ppbImageData,
        
        // initialize the png structure
        
-#if !defined(PNG_NO_STDIO)
+#ifdef PNG_STDIO_SUPPORTED
        png_init_io(png_ptr, pfFile);
 #else
        png_set_read_fn(png_ptr, (png_voidp)pfFile, png_read_data);
@@ -324,7 +324,7 @@ BOOL PngSaveImage (PTSTR pstrFileName, png_byte *pDiData,
    {
        // initialize the png structure
        
-#if !defined(PNG_NO_STDIO)
+#ifdef PNG_STDIO_SUPPORTED
        png_init_io(png_ptr, pfFile);
 #else
        png_set_write_fn(png_ptr, (png_voidp)pfFile, png_write_data, png_flush);
@@ -395,7 +395,7 @@ BOOL PngSaveImage (PTSTR pstrFileName, png_byte *pDiData,
    return TRUE;
 }

-#ifdef PNG_NO_STDIO
+#ifndef PNG_STDIO_SUPPORTED

 static void
 png_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
--- a/contrib/visupng/PngFile.h
+++ b/contrib/visupng/PngFile.h
@@ -3,10 +3,10 @@
 //------------------------------------------

 // Copyright 2000, Willem van Schaik.
-//
+
 // This code is released under the libpng license.
-// For conditions of distribution and use, see the
-// copyright/license/disclaimer notice in png.h
+// For conditions of distribution and use, see the disclaimer
+// and license in png.h

 #include <stdio.h>
 #include <stdlib.h>
@@ -22,7 +22,7 @@ BOOL PngLoadImage (PTSTR pstrFileName, png_byte **ppbImageData,
 BOOL PngSaveImage (PTSTR pstrFileName, png_byte *pDiData,
                   int iWidth, int iHeight, png_color BkgColor);

-#if defined(PNG_NO_STDIO)
+#ifndef PNG_STDIO_SUPPORTED
 static void png_read_data(png_structp png_ptr, png_bytep data, png_size_t length);
 static void png_write_data(png_structp png_ptr, png_bytep data, png_size_t length);
 static void png_flush(png_structp png_ptr);
--- a/contrib/visupng/README.txt
+++ b/contrib/visupng/README.txt
@@ -4,8 +4,8 @@ Microsoft Developer Studio Build File, Format Version 6.00 for VisualPng
 Copyright 2000, Willem van Schaik.

 This code is released under the libpng license.
-For conditions of distribution and use, see the
-copyright/license/disclaimer notice in png.h
+For conditions of distribution and use, see the disclaimer
+and license in png.h

 As a PNG .dll demo VisualPng is finished. More features would only hinder
 the program's objective. However, further extensions (like support for other 
--- a/contrib/visupng/VisualPng.c
+++ b/contrib/visupng/VisualPng.c
@@ -3,10 +3,10 @@
 //------------------------------------

 // Copyright 2000, Willem van Schaik.
-//
+
 // This code is released under the libpng license.
-// For conditions of distribution and use, see the
-// copyright/license/disclaimer notice in png.h
+// For conditions of distribution and use, see the disclaimer
+// and license in png.h

 // switches

--- a/contrib/visupng/VisualPng.dsp
+++ b/contrib/visupng/VisualPng.dsp
@@ -43,9 +43,9 @@ RSC=rc.exe
 # PROP Intermediate_Dir "Release"
 # PROP Ignore_Export_Lib 0
 # PROP Target_Dir ""
-# ADD BASE CPP /nologo /W3 /O2 /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "NDEBUG" /D "PNG_NO_STDIO" /D "PNG_NO_GLOBAL_ARRAYS" /FD /c
+# ADD BASE CPP /nologo /W3 /O2 /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "NDEBUG" /D "PNG_NO_STDIO" /FD /c
 # SUBTRACT BASE CPP /YX
-# ADD CPP /nologo /MD /W3 /O2 /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "NDEBUG" /D "PNG_NO_STDIO" /D "PNG_NO_GLOBAL_ARRAYS" /FD /c
+# ADD CPP /nologo /MD /W3 /O2 /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "NDEBUG" /D "PNG_NO_STDIO" /FD /c
 # SUBTRACT CPP /YX
 # ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /win32
 # ADD MTL /nologo /D "NDEBUG" /mktyplib203 /win32
@@ -77,9 +77,9 @@ PostBuild_Cmds=$(outdir)\VisualPng.exe ..\..\contrib\pngsuite\basn6a16.png
 # PROP Intermediate_Dir "Debug"
 # PROP Ignore_Export_Lib 0
 # PROP Target_Dir ""
-# ADD BASE CPP /nologo /W3 /Gm /ZI /Od /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "_DEBUG" /D "PNG_NO_STDIO" /D "PNG_NO_GLOBAL_ARRAYS" /FD /GZ /c
+# ADD BASE CPP /nologo /W3 /Gm /ZI /Od /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "_DEBUG" /D "PNG_NO_STDIO" /FD /GZ /c
 # SUBTRACT BASE CPP /YX
-# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "_DEBUG" /D "PNG_NO_STDIO" /D "PNG_NO_GLOBAL_ARRAYS" /FD /GZ /c
+# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "_DEBUG" /D "PNG_NO_STDIO" /FD /GZ /c
 # SUBTRACT CPP /YX
 # ADD BASE MTL /nologo /D "_DEBUG" /mktyplib203 /win32
 # ADD MTL /nologo /D "_DEBUG" /mktyplib203 /win32
--- a/87
+++ b/87
@@ -1,10 +1,10 @@
 #! /bin/sh
 # depcomp - compile a program generating dependencies as side-effects

-scriptversion=2007-03-29.01
+scriptversion=2009-04-28.21; # UTC

-# Copyright (C) 1999, 2000, 2003, 2004, 2005, 2006, 2007 Free Software
-# Foundation, Inc.
+# Copyright (C) 1999, 2000, 2003, 2004, 2005, 2006, 2007, 2009 Free
+# Software Foundation, Inc.

 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -17,9 +17,7 @@ scriptversion=2007-03-29.01
 # GNU General Public License for more details.

 # You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-# 02110-1301, USA.
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.

 # As a special exception to the GNU General Public License, if you
 # distribute this file as part of a program that contains a
@@ -87,6 +85,15 @@ if test "$depmode" = dashXmstdout; then
   depmode=dashmstdout
 fi

+cygpath_u="cygpath -u -f -"
+if test "$depmode" = msvcmsys; then
+   # This is just like msvisualcpp but w/o cygpath translation.
+   # Just convert the backslash-escaped backslashes to single forward
+   # slashes to satisfy depend.m4
+   cygpath_u="sed s,\\\\\\\\,/,g"
+   depmode=msvisualcpp
+fi
+
 case "$depmode" in
 gcc3)
 ## gcc 3 implements dependency tracking that does exactly what
@@ -192,14 +199,14 @@ sgi)
 ' < "$tmpdepfile" \
    | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
    tr '
-' ' ' >> $depfile
-    echo >> $depfile
+' ' ' >> "$depfile"
+    echo >> "$depfile"

    # The second pass generates a dummy entry for each header file.
    tr ' ' '
 ' < "$tmpdepfile" \
   | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
-   >> $depfile
+   >> "$depfile"
  else
    # The sourcefile does not contain any dependencies, so just
    # store a dummy comment line, to avoid errors with the Makefile
@@ -328,7 +335,12 @@ hp2)
  if test -f "$tmpdepfile"; then
    sed -e "s,^.*\.[a-z]*:,$object:," "$tmpdepfile" > "$depfile"
    # Add `dependent.h:' lines.
-    sed -ne '2,${; s/^ *//; s/ \\*$//; s/$/:/; p;}' "$tmpdepfile" >> "$depfile"
+    sed -ne '2,${
+	       s/^ *//
+	       s/ \\*$//
+	       s/$/:/
+	       p
+	     }' "$tmpdepfile" >> "$depfile"
  else
    echo "#dummy" > "$depfile"
  fi
@@ -404,7 +416,7 @@ dashmstdout)

  # Remove the call to Libtool.
  if test "$libtool" = yes; then
-    while test $1 != '--mode=compile'; do
+    while test "X$1" != 'X--mode=compile'; do
      shift
    done
    shift
@@ -455,32 +467,39 @@ makedepend)
  "$@" || exit $?
  # Remove any Libtool call
  if test "$libtool" = yes; then
-    while test $1 != '--mode=compile'; do
+    while test "X$1" != 'X--mode=compile'; do
      shift
    done
    shift
  fi
  # X makedepend
  shift
-  cleared=no
-  for arg in "$@"; do
+  cleared=no eat=no
+  for arg
+  do
    case $cleared in
    no)
      set ""; shift
      cleared=yes ;;
    esac
+    if test $eat = yes; then
+      eat=no
+      continue
+    fi
    case "$arg" in
    -D*|-I*)
      set fnord "$@" "$arg"; shift ;;
    # Strip any option that makedepend may not understand.  Remove
    # the object too, otherwise makedepend will parse it as a source file.
+    -arch)
+      eat=yes ;;
    -*|$object)
      ;;
    *)
      set fnord "$@" "$arg"; shift ;;
    esac
  done
-  obj_suffix="`echo $object | sed 's/^.*\././'`"
+  obj_suffix=`echo "$object" | sed 's/^.*\././'`
  touch "$tmpdepfile"
  ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
  rm -f "$depfile"
@@ -500,7 +519,7 @@ cpp)

  # Remove the call to Libtool.
  if test "$libtool" = yes; then
-    while test $1 != '--mode=compile'; do
+    while test "X$1" != 'X--mode=compile'; do
      shift
    done
    shift
@@ -538,13 +557,27 @@ cpp)

 msvisualcpp)
  # Important note: in order to support this mode, a compiler *must*
-  # always write the preprocessed file to stdout, regardless of -o,
-  # because we must use -o when running libtool.
+  # always write the preprocessed file to stdout.
  "$@" || exit $?
+
+  # Remove the call to Libtool.
+  if test "$libtool" = yes; then
+    while test "X$1" != 'X--mode=compile'; do
+      shift
+    done
+    shift
+  fi
+
  IFS=" "
  for arg
  do
    case "$arg" in
+    -o)
+      shift
+      ;;
+    $object)
+      shift
+      ;;
    "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
 	set fnord "$@"
 	shift
@@ -557,16 +590,23 @@ msvisualcpp)
 	;;
    esac
  done
-  "$@" -E |
-  sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::echo "`cygpath -u \\"\1\\"`":p' | sort | uniq > "$tmpdepfile"
+  "$@" -E 2>/dev/null |
+  sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
  rm -f "$depfile"
  echo "$object : \\" > "$depfile"
-  . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::	\1 \\:p' >> "$depfile"
+  sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::	\1 \\:p' >> "$depfile"
  echo "	" >> "$depfile"
-  . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::\1\::p' >> "$depfile"
+  sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
  rm -f "$tmpdepfile"
  ;;

+msvcmsys)
+  # This case exists only to let depend.m4 do its work.  It works by
+  # looking at the text of this script.  This case will never be run,
+  # since it is checked for above.
+  exit 1
+  ;;
+
 none)
  exec "$@"
  ;;
@@ -585,5 +625,6 @@ exit 0
 # eval: (add-hook 'write-file-hooks 'time-stamp)
 # time-stamp-start: "scriptversion="
 # time-stamp-format: "%:y-%02m-%02d.%02H"
-# time-stamp-end: "$"
+# time-stamp-time-zone: "UTC"
+# time-stamp-end: "; # UTC"
 # End:
--- a/example.c
+++ b/example.c
@@ -2,7 +2,7 @@
 #if 0 /* in case someone actually tries to compile this */

 /* example.c - an example of using libpng
- * Last changed in libpng 1.4.0 [June 27, 2009]
+ * Last changed in libpng 1.4.0 [November 22, 2009]
 * This file has been placed in the public domain by the authors.
 * Maintained 1998-2009 Glenn Randers-Pehrson
 * Maintained 1996, 1997 Andreas Dilger)
--- a/5
+++ b/5
@@ -1,7 +1,7 @@
 #!/bin/sh
 # install - install a program, script, or datafile

-scriptversion=2006-12-25.00
+scriptversion=2009-04-28.21; # UTC

 # This originates from X11R5 (mit/util/scripts/install.sh), which was
 # later released in X11R6 (xc/config/util/install.sh) with the
@@ -515,5 +515,6 @@ done
 # eval: (add-hook 'write-file-hooks 'time-stamp)
 # time-stamp-start: "scriptversion="
 # time-stamp-format: "%:y-%02m-%02d.%02H"
-# time-stamp-end: "$"
+# time-stamp-time-zone: "UTC"
+# time-stamp-end: "; # UTC"
 # End:
--- a/libpng-1.4.0beta104.txt
+++ b/libpng-1.4.0beta104.txt
@@ -1,6 +1,6 @@
 libpng.txt - A description on how to use and modify libpng

- libpng version 1.4.0beta66 - June 27, 2009
+ libpng version 1.4.0beta104 - November 22, 2009
 Updated and distributed by Glenn Randers-Pehrson
 <glennrp at users.sourceforge.net>
 Copyright (c) 1998-2009 Glenn Randers-Pehrson
@@ -11,7 +11,7 @@ libpng.txt - A description on how to use and modify libpng

 Based on:

- libpng versions 0.97, January 1998, through 1.4.0beta66 - June 27, 2009
+ libpng versions 0.97, January 1998, through 1.4.0beta104 - November 22, 2009
 Updated and distributed by Glenn Randers-Pehrson
 Copyright (c) 1998-2009 Glenn Randers-Pehrson

@@ -40,8 +40,8 @@ will need.  We assume that libpng is already installed; see the
 INSTALL file for instructions on how to install libpng.

 For examples of libpng usage, see the files "example.c", "pngtest.c",
-and the files in the "contrib" directory, all of which are included in the
-libpng distribution.
+and the files in the "contrib" directory, all of which are included in
+the libpng distribution.

 Libpng was written as a companion to the PNG specification, as a way
 of reducing the amount of time and effort it takes to support the PNG
@@ -420,6 +420,9 @@ where 0x7fffffffL means unlimited.  You can retrieve this limit with

   chunk_cache_max = png_get_chunk_cache_max(png_ptr);

+This limit also applies to the number of buffers that can be allocated
+by png_decompress_chunk() while decompressing iTXt, zTXt, and iCCP chunks.
+
 The high-level read interface

 At this point there are two ways to proceed; through the high-level
@@ -447,14 +450,16 @@ you want to do are limited to the following set:
    PNG_TRANSFORM_INVERT_ALPHA  Change alpha from opacity
                                to transparency
    PNG_TRANSFORM_SWAP_ENDIAN   Byte-swap 16-bit samples
+    PNG_TRANSFORM_GRAY_TO_RGB   Expand grayscale samples
+                                to RGB (or GA to RGBA)

 (This excludes setting a background color, doing gamma transformation,
 dithering, and setting filler.)  If this is the case, simply do this:

    png_read_png(png_ptr, info_ptr, png_transforms, NULL)

-where png_transforms is an integer containing the bitwise OR of
-some set of transformation flags.  This call is equivalent to png_read_info(),
+where png_transforms is an integer containing the bitwise OR of some
+set of transformation flags.  This call is equivalent to png_read_info(),
 followed the set of transformations indicated by the transform mask,
 then png_read_image(), and finally png_read_end().

@@ -555,10 +560,33 @@ in until png_read_end() has read the chunk data following the image.
                     for PNG 1.0)
    interlace_type - (PNG_INTERLACE_NONE or
                     PNG_INTERLACE_ADAM7)
-    Any or all of interlace_type, compression_type, of
+
+    Any or all of interlace_type, compression_type, or
    filter_method can be NULL if you are
    not interested in their values.

+    Note that png_get_IHDR() returns 32-bit data into
+    the application's width and height variables.
+    This is an unsafe situation if these are 16-bit
+    variables.  In such situations, the
+    png_get_image_width() and png_get_image_height()
+    functions described below are safer.
+
+    width            = png_get_image_width(png_ptr,
+                         info_ptr);
+    height           = png_get_image_height(png_ptr,
+                         info_ptr);
+    bit_depth        = png_get_bit_depth(png_ptr,
+                         info_ptr);
+    color_type       = png_get_color_type(png_ptr,
+                         info_ptr);
+    filter_method    = png_get_filter_type(png_ptr,
+                         info_ptr);
+    compression_type = png_get_compression_type(png_ptr,
+                         info_ptr);
+    interlace_type   = png_get_interlace_type(png_ptr,
+                         info_ptr);
+
    channels = png_get_channels(png_ptr, info_ptr);
    channels       - number of channels of info for the
                     color type (valid values are 1 (GRAY,
@@ -578,29 +606,12 @@ in until png_read_end() has read the chunk data following the image.
                     be in signature[4] through signature[7]
                     (see png_set_sig_bytes())).

-
-    width            = png_get_image_width(png_ptr,
-                         info_ptr);
-    height           = png_get_image_height(png_ptr,
-                         info_ptr);
-    bit_depth        = png_get_bit_depth(png_ptr,
-                         info_ptr);
-    color_type       = png_get_color_type(png_ptr,
-                         info_ptr);
-    filter_method    = png_get_filter_type(png_ptr,
-                         info_ptr);
-    compression_type = png_get_compression_type(png_ptr,
-                         info_ptr);
-    interlace_type   = png_get_interlace_type(png_ptr,
-                         info_ptr);
-
-
 These are also important, but their validity depends on whether the chunk
 has been read.  The png_get_valid(png_ptr, info_ptr, PNG_INFO_<chunk>) and
 png_get_<chunk>(png_ptr, info_ptr, ...) functions return non-zero if the
 data has been read, or zero if it is missing.  The parameters to the
-png_get_<chunk> are set directly if they are simple data types, or a pointer
-into the info_ptr is returned for any complex types.
+png_get_<chunk> are set directly if they are simple data types, or a
+pointer into the info_ptr is returned for any complex types.

    png_get_PLTE(png_ptr, info_ptr, &palette,
                     &num_palette);
@@ -638,10 +649,10 @@ into the info_ptr is returned for any complex types.
                     whichever are appropriate for the
                     given color type (png_color_16)

-    png_get_tRNS(png_ptr, info_ptr, &trans, &num_trans,
-                     &trans_color);
-    trans          - array of transparent entries for
-                     palette (PNG_INFO_tRNS)
+    png_get_tRNS(png_ptr, info_ptr, &trans_alpha,
+                     &num_trans, &trans_color);
+    trans_alpha    - array of alpha (transparency)
+                     entries for palette (PNG_INFO_tRNS)
    trans_color    - graylevel or color sample values of
                     the single transparent color for
                     non-paletted images (PNG_INFO_tRNS)
@@ -684,6 +695,10 @@ into the info_ptr is returned for any complex types.
                         string for unknown).
    text_ptr[i].lang_key  - keyword in UTF-8
                         (empty string for unknown).
+    Note that the itxt_length, lang, and lang_key
+    members of the text_ptr structure only exist
+    when the library is built with iTXt chunk support.
+
    num_text       - number of comments (same as
                     num_comments; you can put NULL here
                     to avoid the duplication)
@@ -863,7 +878,7 @@ things.
 As of libpng version 1.2.9, png_set_expand_gray_1_2_4_to_8() was
 added.  It expands the sample depth without changing tRNS to alpha.

-As of libpng version 1.4.0beta66, not all possible expansions are supported.
+As of libpng version 1.4.0beta104, not all possible expansions are supported.

 In the following table, the 01 means grayscale with depth<8, 31 means
 indexed with depth<8, other numerals represent the color type, "T" means
@@ -942,10 +957,10 @@ values of the pixels:

 PNG files have possible bit depths of 1, 2, 4, 8, and 16.  All pixels
 stored in a PNG image have been "scaled" or "shifted" up to the next
-higher possible bit depth (e.g. from 5 bits/sample in the range [0,31] to
-8 bits/sample in the range [0, 255]).  However, it is also possible to
-convert the PNG pixel data back to the original bit depth of the image.
-This call reduces the pixels back down to the original bit depth:
+higher possible bit depth (e.g. from 5 bits/sample in the range [0,31]
+to 8 bits/sample in the range [0, 255]).  However, it is also possible
+to convert the PNG pixel data back to the original bit depth of the
+image.  This call reduces the pixels back down to the original bit depth:

    png_color_8p sig_bit;

@@ -1358,12 +1373,11 @@ point to libpng-allocated storage with the following function:

 This function may be safely called when the relevant storage has
 already been freed, or has not yet been allocated, or was allocated
-by the user and not by libpng,  and will in those
-cases do nothing.  The "seq" parameter is ignored if only one item
-of the selected data type, such as PLTE, is allowed.  If "seq" is not
-1, and multiple items are allowed for the data type identified in
-the mask, such as text or sPLT, only the n'th item in the structure
-is freed, where n is "seq".
+by the user and not by libpng,  and will in those cases do nothing.
+The "seq" parameter is ignored if only one item of the selected data
+type, such as PLTE, is allowed.  If "seq" is not -1, and multiple items
+are allowed for the data type identified in the mask, such as text or
+sPLT, only the n'th item in the structure is freed, where n is "seq".

 The default behavior is only to free data that was allocated internally
 by libpng.  This can be changed, so that libpng will not free the data,
@@ -1402,8 +1416,8 @@ if you transfer responsibility for free'ing text_ptr from libpng to your
 application, your application must not separately free those members.

 The png_free_data() function will turn off the "valid" flag for anything
-it frees.  If you need to turn the flag off for a chunk that was freed by your
-application instead of by libpng, you can use
+it frees.  If you need to turn the flag off for a chunk that was freed by
+your application instead of by libpng, you can use

    png_set_invalid(png_ptr, info_ptr, mask);
    mask - identifies the chunks to be made invalid,
@@ -1713,8 +1727,8 @@ the filter method, for which the only valid values are 0 (as of the
 July 1999 PNG specification, version 1.2) or 64 (if you are writing
 a PNG datastream that is to be embedded in a MNG datastream).  The third
 parameter is a flag that indicates which filter type(s) are to be tested
-for each scanline.  See the PNG specification for details on the specific filter
-types.
+for each scanline.  See the PNG specification for details on the specific
+filter types.


    /* turn on or off filtering, and/or choose
@@ -1880,10 +1894,10 @@ width, height, bit_depth, and color_type must be the same in each call.
                     appropriate for the given color type
                     (png_color_16)

-    png_set_tRNS(png_ptr, info_ptr, trans, num_trans,
-       trans_color);
-    trans          - array of transparent entries for
-                     palette (PNG_INFO_tRNS)
+    png_set_tRNS(png_ptr, info_ptr, trans_alpha,
+       num_trans, trans_color);
+    trans_alpha    - array of alpha (transparency)
+                     entries for palette (PNG_INFO_tRNS)
    trans_color    - graylevel or color sample values
                     (in order red, green, blue) of the
                     single transparent color for
@@ -1923,6 +1937,10 @@ width, height, bit_depth, and color_type must be the same in each call.
                         empty for unknown).
    text_ptr[i].translated_keyword  - keyword in UTF-8 (NULL
                         or empty for unknown).
+    Note that the itxt_length, lang, and lang_key
+    members of the text_ptr structure only exist
+    when the library is built with iTXt chunk support.
+
    num_text       - number of comments

    png_set_sPLT(png_ptr, info_ptr, &palette_ptr,
@@ -2128,10 +2146,10 @@ this with a call to png_write_info().

 Note that there is one transformation you may need to do before
 png_write_info().  In PNG files, the alpha channel in an image is the
-level of opacity.  If your data is supplied as a level of
-transparency, you can invert the alpha channel before you write it, so
-that 0 is fully transparent and 255 (in 8-bit or paletted images) or
-65535 (in 16-bit images) is fully opaque, with
+level of opacity.  If your data is supplied as a level of transparency,
+you can invert the alpha channel before you write it, so that 0 is
+fully transparent and 255 (in 8-bit or paletted images) or 65535
+(in 16-bit images) is fully opaque, with

    png_set_invert_alpha(png_ptr);

@@ -2318,14 +2336,13 @@ a single row_pointer instead of an array of row_pointers:

    png_write_row(png_ptr, row_pointer);

-When the file is interlaced, things can get a good deal more
-complicated.  The only currently (as of the PNG Specification
-version 1.2, dated July 1999) defined interlacing scheme for PNG files
-is the "Adam7" interlace scheme, that breaks down an
-image into seven smaller images of varying size.  libpng will build
-these images for you, or you can do them yourself.  If you want to
-build them yourself, see the PNG specification for details of which
-pixels to write when.
+When the file is interlaced, things can get a good deal more complicated.
+The only currently (as of the PNG Specification version 1.2, dated July
+1999) defined interlacing scheme for PNG files is the "Adam7" interlace
+scheme, that breaks down an image into seven smaller images of varying
+size.  libpng will build these images for you, or you can do them
+yourself.  If you want to build them yourself, see the PNG specification
+for details of which pixels to write when.

 If you don't want libpng to handle the interlacing details, just
 use png_set_interlace_handling() and call png_write_rows() the
@@ -2337,17 +2354,17 @@ writing any rows:
    number_of_passes =
       png_set_interlace_handling(png_ptr);

-This will return the number of passes needed.  Currently, this
-is seven, but may change if another interlace type is added.
+This will return the number of passes needed.  Currently, this is seven,
+but may change if another interlace type is added.

 Then write the complete image number_of_passes times.

    png_write_rows(png_ptr, row_pointers,
       number_of_rows);

-As some of these rows are not used, and thus return immediately,
-you may want to read about interlacing in the PNG specification,
-and only update the rows that are actually used.
+As some of these rows are not used, and thus return immediately, you may
+want to read about interlacing in the PNG specification, and only update
+the rows that are actually used.

 Finishing a sequential write

@@ -2380,15 +2397,14 @@ point to libpng-allocated storage with the following function:

 This function may be safely called when the relevant storage has
 already been freed, or has not yet been allocated, or was allocated
-by the user  and not by libpng,  and will in those
-cases do nothing.  The "seq" parameter is ignored if only one item
-of the selected data type, such as PLTE, is allowed.  If "seq" is not
-1, and multiple items are allowed for the data type identified in
-the mask, such as text or sPLT, only the n'th item in the structure
-is freed, where n is "seq".
+by the user  and not by libpng,  and will in those cases do nothing.
+The "seq" parameter is ignored if only one item of the selected data
+type, such as PLTE, is allowed.  If "seq" is not -1, and multiple items
+are allowed for the data type identified in the mask, such as text or
+sPLT, only the n'th item in the structure is freed, where n is "seq".

-If you allocated data such as a palette that you passed
-in to libpng with png_set_*, you must not free it until just before the call to
+If you allocated data such as a palette that you passed in to libpng
+with png_set_*, you must not free it until just before the call to
 png_destroy_write_struct().

 The default behavior is only to free data that was allocated internally
@@ -2454,16 +2470,18 @@ goes through callbacks that are user-settable.  The default routines are
 in pngmem.c, pngrio.c, pngwio.c, and pngerror.c, respectively.  To change
 these functions, call the appropriate png_set_*_fn() function.

-Memory allocation is done through the functions png_malloc()
-and png_free().  These currently just call the standard C functions.  If
-your pointers can't access more then 64K at a time, you will want to set
-MAXSEG_64K in zlib.h.  Since it is unlikely that the method of handling
-memory allocation on a platform will change between applications, these
-functions must be modified in the library at compile time.  If you prefer
-to use a different method of allocating and freeing data, you can use
-png_create_read_struct_2() or png_create_write_struct_2() to register
-your own functions as described above.
-These functions also provide a void pointer that can be retrieved via
+Memory allocation is done through the functions png_malloc(), png_calloc(),
+and png_free().  These currently just call the standard C functions.
+png_calloc() calls png_malloc() and then png_memset() to clear the newly
+allocated memory to zero.  If your pointers can't access more then 64K
+at a time, you will want to set MAXSEG_64K in zlib.h.  Since it is
+unlikely that the method of handling memory allocation on a platform
+will change between applications, these functions must be modified in
+the library at compile time.  If you prefer to use a different method
+of allocating and freeing data, you can use png_create_read_struct_2() or
+png_create_write_struct_2() to register your own functions as described
+above.  These functions also provide a void pointer that can be retrieved
+via

    mem_ptr=png_get_mem_ptr(png_ptr);

@@ -2555,10 +2573,10 @@ The motivation behind using setjmp() and longjmp() is the C++ throw and
 catch exception handling methods.  This makes the code much easier to write,
 as there is no need to check every return code of every function call.
 However, there are some uncertainties about the status of local variables
-after a longjmp, so the user may want to be careful about doing anything after
-setjmp returns non-zero besides returning itself.  Consult your compiler
-documentation for more details.  For an alternative approach, you may wish
-to use the "cexcept" facility (see http://cexcept.sourceforge.net).
+after a longjmp, so the user may want to be careful about doing anything
+after setjmp returns non-zero besides returning itself.  Consult your
+compiler documentation for more details.  For an alternative approach, you
+may wish to use the "cexcept" facility (see http://cexcept.sourceforge.net).

 Custom chunks

@@ -2570,15 +2588,14 @@ library code itself needs to know about interactions between your
 chunk and existing `intrinsic' chunks.

 If you need to write a new intrinsic chunk, first read the PNG
-specification. Acquire a first level of
-understanding of how it works.  Pay particular attention to the
-sections that describe chunk names, and look at how other chunks were
-designed, so you can do things similarly.  Second, check out the
-sections of libpng that read and write chunks.  Try to find a chunk
-that is similar to yours and use it as a template.  More details can
-be found in the comments inside the code.  It is best to handle unknown
-chunks in a generic method, via callback functions, instead of by
-modifying libpng functions.
+specification. Acquire a first level of understanding of how it works.
+Pay particular attention to the sections that describe chunk names,
+and look at how other chunks were designed, so you can do things
+similarly.  Second, check out the sections of libpng that read and
+write chunks.  Try to find a chunk that is similar to yours and use
+it as a template.  More details can be found in the comments inside
+the code.  It is best to handle unknown chunks in a generic method,
+via callback functions, instead of by modifying libpng functions.

 If you wish to write your own transformation for the data, look through
 the part of the code that does the transformations, and check out some of
@@ -2755,14 +2772,14 @@ off en masse with compiler directives that define
 PNG_NO_READ[or WRITE]_TRANSFORMS, or PNG_NO_READ[or WRITE]_ANCILLARY_CHUNKS,
 or all four,
 along with directives to turn on any of the capabilities that you do
-want.  The PNG_NO_READ[or WRITE]_TRANSFORMS directives disable
-the extra transformations but still leave the library fully capable of reading
-and writing PNG files with all known public chunks
-Use of the PNG_NO_READ[or WRITE]_ANCILLARY_CHUNKS directive
-produces a library that is incapable of reading or writing ancillary chunks.
-If you are not using the progressive reading capability, you can
-turn that off with PNG_NO_PROGRESSIVE_READ (don't confuse
-this with the INTERLACING capability, which you'll still have).
+want.  The PNG_NO_READ[or WRITE]_TRANSFORMS directives disable the extra
+transformations but still leave the library fully capable of reading
+and writing PNG files with all known public chunks. Use of the
+PNG_NO_READ[or WRITE]_ANCILLARY_CHUNKS directive produces a library
+that is incapable of reading or writing ancillary chunks.  If you are
+not using the progressive reading capability, you can turn that off
+with PNG_NO_PROGRESSIVE_READ (don't confuse this with the INTERLACING
+capability, which you'll still have).

 All the reading and writing specific code are in separate files, so the
 linker should only grab the files it needs.  However, if you want to
@@ -2897,6 +2914,9 @@ accomplish this, the functions png_create_read_struct_2(),
 png_create_write_struct_2(), png_set_mem_fn(), png_get_mem_ptr(),
 png_malloc_default(), and png_free_default() were added.

+Support for the iTXt chunk has been enabled by default as of
+version 1.2.41.
+
 Support for certain MNG features was enabled.

 Support for numbered error messages was added.  However, we never got
@@ -2951,20 +2971,23 @@ selection of assembler code features:
 We replaced all of these functions with simple stubs in libpng-1.2.20,
 when the Intel assembler code was removed due to a licensing issue.

-IX.  Changes to Libpng from version 1.0.x/1.2.x to 1.4.x
+These macros are deprecated:

-Private libpng prototypes and macro definitions were moved from
-png.h and pngconf.h into a new pngpriv.h header file.
+    PNG_READ_TRANSFORMS_NOT_SUPPORTED
+    PNG_PROGRESSIVE_READ_NOT_SUPPORTED
+    PNG_NO_SEQUENTIAL_READ_SUPPORTED
+    PNG_WRITE_TRANSFORMS_NOT_SUPPORTED
+    PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED
+    PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED

-Support for the iTXt chunk has been enabled by default.
+They have been replaced, respectively, by:

-Support for global arrays was disabled by default.
-
-Some obsolete/deprecated macros and functions have been removed.
-
-The PNG_1_0_X and PNG_1_2_X macros were eliminated.
-
-Many WIN32_WCE #ifdefs were removed.
+    PNG_NO_READ_TRANSFORMS
+    PNG_NO_PROGRESSIVE_READ
+    PNG_NO_SEQUENTIAL_READ
+    PNG_NO_WRITE_TRANSFORMS
+    PNG_NO_READ_ANCILLARY_CHUNKS
+    PNG_NO_WRITE_ANCILLARY_CHUNKS

 PNG_MAX_UINT was replaced with PNG_UINT_31_MAX.  It has been
 deprecated since libpng-1.0.16 and libpng-1.2.6.
@@ -2975,19 +2998,23 @@ was replaced with
    !png_sig_cmp(sig, 0, num)
 It has been deprecated since libpng-0.90.

-The functions png_read_init(info_ptr), png_write_init(info_ptr),
-png_info_init(info_ptr), png_read_destroy(), and png_write_destroy()
-have been removed.  They have been deprecated since libpng-0.95.
-
 The function
    png_set_gray_1_2_4_to_8()
 which also expands tRNS to alpha was replaced with
    png_set_expand_gray_1_2_4_to_8()
 which does not. It has been deprecated since libpng-1.0.18 and 1.2.9.
+IX.  Changes to Libpng from version 1.0.x/1.2.x to 1.4.x

-Support for numbered error messages was removed by default, since we
-never got around to actually numbering the error messages. The function
-png_set_strip_error_numbers() was removed from the library by default.
+Private libpng prototypes and macro definitions were moved from
+png.h and pngconf.h into a new pngpriv.h header file.
+
+Support for global arrays was removed.
+
+Some obsolete/deprecated macros and functions have been removed.
+
+The obsolete, unused pnggccrd.c and pngvcrd.files were removed.
+
+The PNG_1_0_X and PNG_1_2_X macros were eliminated.

 Functions png_set_benign_errors(), png_benign_error(), and
 png_chunk_benign_error() were added.
@@ -2997,8 +3024,40 @@ will allocate for reading chunks was added, as a security measure.
 The functions png_set_chunk_cache_max() and png_get_chunk_cache_max()
 were added to the library.

-We implemented support for I/O states. Added png_ptr member io_state, and
-functions png_get_io_chunk_name() and png_get_io_state() in pngget.c
+We implemented support for I/O states by adding png_ptr member io_state
+and functions png_get_io_chunk_name() and png_get_io_state() in pngget.c
+
+The png_calloc() function was added and is used in place of
+of "png_malloc(); png_memset();" except in the case in png_read_png()
+where the array consists of pointers; in this case a "for" loop is used
+after the png_malloc() to set the pointers to NULL.
+
+We added PNG_TRANSFORM_GRAY_TO_RGB to the available high-level
+input transforms.
+
+We added the png_set_premultiply_alpha and
+png_do_read_premultiply_alpha() functions.
+
+The call to png_do_chop() in pngrtran.c, which reduces 16-bit input
+files to 8-bit bit depth, was relocated ahead of the building
+of gamma tables.  This allows us to build 8-bit tables instead
+of 16-bit tables, when only 8-bit tables are needed. This avoids 
+wasting some computing resources when the application has called
+the png_set_strip_16() function and encounters a 16-bit PNG file.
+
+Checking for and reporting of errors in the IHDR chunk is more thorough.
+
+The PNG_LEGACY_SUPPORTED macro was eliminated.
+
+Many WIN32_WCE #ifdefs were removed.
+
+The functions png_read_init(info_ptr), png_write_init(info_ptr),
+png_info_init(info_ptr), png_read_destroy(), and png_write_destroy()
+have been removed.  They have been deprecated since libpng-0.95.
+
+Support for numbered error messages was removed by default, since we
+never got around to actually numbering the error messages. The function
+png_set_strip_error_numbers() was removed from the library by default.

 The png_permit_empty_plte() was removed. It has been deprecated
 since libpng-1.0.9.  Use png_permit_mng_features() instead.
@@ -3008,7 +3067,8 @@ png_set_mmx_thresholds(), png_get_asm_flags(),
 png_get_mmx_bitdepth_threshold(), png_get_mmx_rowbytes_threshold(),
 png_set_asm_flags(), and png_mmx_supported()

-We removed the png_memcpy_check() and png_memset_check() functions.
+We removed the png_check_sig(), png_memcpy_check(), and
+png_memset_check() functions.

 We changed the prototype for png_malloc() from
    png_malloc(png_structp png_ptr, png_uint_32 size)
@@ -3024,17 +3084,19 @@ allocates.

 The png_zalloc() and png_zfree() functions are no longer exported.

-The png_calloc() function was added.
-
 We removed the trailing '.' from the warning and error messages.

+The png_struct and info_struct members "trans" and "trans_values" were
+changed to "trans_alpha" and "trans_color", respectively.

 X. Detecting libpng

 The png_get_io_ptr() function has been present since libpng-0.88, has never
 changed, and is unaffected by conditional compilation macros.  It is the
 best choice for use in configure scripts for detecting the presence of any
-libpng version since 0.88.
+libpng version since 0.88.  In an autoconf "configure.in" you could use
+
+    AC_CHECK_LIB(png, png_get_io_ptr, ...

 XI. Source code repository

@@ -3079,6 +3141,15 @@ We use 3-space indentation, except for continued statements which
 are usually indented the same as the first line of the statement
 plus four more spaces.

+For macro definitions we use 2-space indentation, always leaving the "#"
+in the first column.
+
+    #ifndef PNG_NO_FEATURE
+    #  ifndef PNG_FEATURE_SUPPORTED
+    #    define PNG_FEATURE_SUPPORTED
+    #  endif
+    #endif
+
 Comments appear with the leading "/*" at the same indentation as
 the statement that follows the comment:

@@ -3111,7 +3182,10 @@ exported functions are marked with PNGAPI:
    body;
 }

-The prototypes for all exported functions appear in png.h.
+The prototypes for all exported functions appear in png.h,
+above the comment that says
+
+    /* Maintainer: Put new public prototypes here ... */

 We mark all non-exported functions with "/* PRIVATE */"":

@@ -3121,9 +3195,12 @@ We mark all non-exported functions with "/* PRIVATE */"":
    body;
 }

-The prototypes for non-exported functions can appear in
+The prototypes for non-exported functions (except for those in
+pngtest) appear in
 pngpriv.h
-or in the file where the function is located.
+above the comment that says
+
+  /* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */

 The names of all exported functions and variables begin
 with  "png_", and all publicly visible C preprocessor
@@ -3137,23 +3214,24 @@ cast, nor do we put one between a function name and the
 left parenthesis that follows it:

    for (i = 2; i > 0; --i)
-       x[i] = a(x) + (int)b;
+       y[i] = a(x) + (int)b;

 We prefer #ifdef and #ifndef to #if defined() and if !defined()
 when there is only one macro being tested.

-Other rules can be inferred by inspecting the libpng
-source.
+We do not use the TAB character for indentation in the C sources.
+
+Other rules can be inferred by inspecting the libpng source.

 XIII. Y2K Compliance in libpng

-June 27, 2009
+November 22, 2009

 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.

 This is your unofficial assurance that libpng from version 0.71 and
-upward through 1.4.0beta66 are Y2K compliant.  It is my belief that earlier
+upward through 1.4.0beta104 are Y2K compliant.  It is my belief that earlier
 versions were also Y2K compliant.

 Libpng only has three year fields.  One is a 2-byte unsigned integer that
--- a/scripts/libpng-config.in
+++ b/scripts/libpng-config.in
--- a/scripts/libpng.pc-configure.in
+++ b/scripts/libpng.pc-configure.in
--- a/libpng.3
+++ b/libpng.3
@@ -1,6 +1,6 @@
-.TH LIBPNG 3 "June 27, 2009"
+.TH LIBPNG 3 "November 22, 2009"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0beta66
+libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0beta104
 .SH SYNOPSIS
 \fI\fB

@@ -20,10 +20,6 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0beta66

 \fI\fB

-\fBint png_check_sig (png_bytep \fP\fIsig\fP\fB, int \fInum\fP\fB);\fP
-
-\fI\fB
-
 \fBvoid png_chunk_error (png_structp \fP\fIpng_ptr\fP\fB, png_const_charp \fIerror\fP\fB);\fP

 \fI\fB
@@ -64,18 +60,6 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0beta66

 \fI\fB

-\fBint png_debug(int \fP\fIlevel\fP\fB, png_const_charp \fImessage\fP\fB);\fP
-
-\fI\fB
-
-\fBint png_debug1(int \fP\fIlevel\fP\fB, png_const_charp \fP\fImessage\fP\fB, \fIp1\fP\fB);\fP
-
-\fI\fB
-
-\fBint png_debug2(int \fP\fIlevel\fP\fB, png_const_charp \fP\fImessage\fP\fB, \fP\fIp1\fP\fB, \fIp2\fP\fB);\fP
-
-\fI\fB
-
 \fBvoid png_destroy_info_struct (png_structp \fP\fIpng_ptr\fP\fB, png_infopp \fIinfo_ptr_ptr\fP\fB);\fP

 \fI\fB
@@ -192,12 +176,8 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0beta66

 \fI\fB

-\fB#if \fI!defined(PNG_1_0_X)
-
 \fBpng_int_32 png_get_int_32 (png_bytep \fIbuf\fP\fB);\fP

-\fI\fB#endif
-
 \fI\fB

 \fBpng_byte png_get_interlace_type (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
@@ -378,10 +358,6 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0beta66

 \fI\fB

-\fBvoid png_read_destroy (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_infop \fIend_info_ptr\fP\fB);\fP
-
-\fI\fB
-
 \fBvoid png_read_end (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP

 \fI\fB
@@ -410,8 +386,6 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0beta66

 \fI\fB

-\fB#if \fI!defined(PNG_1_0_X)
-
 \fBpng_save_int_32 (png_bytep \fP\fIbuf\fP\fB, png_int_32 \fIi\fP\fB);\fP

 \fI\fB
@@ -426,8 +400,6 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0beta66

 \fBvoid png_set_add_alpha (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIfiller\fP\fB, int \fIflags\fP\fB);\fP

-\fI\fB#endif
-
 \fI\fB

 \fBvoid png_set_background (png_structp \fP\fIpng_ptr\fP\fB, png_color_16p \fP\fIbackground_color\fP\fB, int \fP\fIbackground_gamma_code\fP\fB, int \fP\fIneed_expand\fP\fB, double \fIbackground_gamma\fP\fB);\fP
@@ -562,6 +534,10 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0beta66

 \fI\fB

+\fBjmp_buf* png_set_longjmp_fn (png_structp \fP\fIpng_ptr\fP\fB, png_longjmp_ptr \fP\fIlongjmp_fn\fP\fB, size_t \fIjmp_buf_size\fP\fB);\fP
+
+\fI\fB
+
 \fBvoid png_set_mem_fn(png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fImem_ptr\fP\fB, png_malloc_ptr \fP\fImalloc_fn\fP\fB, png_free_ptr \fIfree_fn\fP\fB);\fP

 \fI\fB
@@ -750,10 +726,6 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0beta66

 \fI\fB

-\fBvoid png_write_destroy (png_structp \fIpng_ptr\fP\fB);\fP
-
-\fI\fB
-
 \fBvoid png_write_end (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP

 \fI\fB
@@ -809,7 +781,7 @@ Following is a copy of the libpng.txt file that accompanies libpng.
 .SH LIBPNG.TXT
 libpng.txt - A description on how to use and modify libpng

- libpng version 1.4.0beta66 - June 27, 2009
+ libpng version 1.4.0beta104 - November 22, 2009
 Updated and distributed by Glenn Randers-Pehrson
 <glennrp at users.sourceforge.net>
 Copyright (c) 1998-2009 Glenn Randers-Pehrson
@@ -820,7 +792,7 @@ libpng.txt - A description on how to use and modify libpng

 Based on:

- libpng versions 0.97, January 1998, through 1.4.0beta66 - June 27, 2009
+ libpng versions 0.97, January 1998, through 1.4.0beta104 - November 22, 2009
 Updated and distributed by Glenn Randers-Pehrson
 Copyright (c) 1998-2009 Glenn Randers-Pehrson

@@ -849,8 +821,8 @@ will need.  We assume that libpng is already installed; see the
 INSTALL file for instructions on how to install libpng.

 For examples of libpng usage, see the files "example.c", "pngtest.c",
-and the files in the "contrib" directory, all of which are included in the
-libpng distribution.
+and the files in the "contrib" directory, all of which are included in
+the libpng distribution.

 Libpng was written as a companion to the PNG specification, as a way
 of reducing the amount of time and effort it takes to support the PNG
@@ -1229,6 +1201,9 @@ where 0x7fffffffL means unlimited.  You can retrieve this limit with

   chunk_cache_max = png_get_chunk_cache_max(png_ptr);

+This limit also applies to the number of buffers that can be allocated
+by png_decompress_chunk() while decompressing iTXt, zTXt, and iCCP chunks.
+
 .SS The high-level read interface

 At this point there are two ways to proceed; through the high-level
@@ -1256,14 +1231,16 @@ you want to do are limited to the following set:
    PNG_TRANSFORM_INVERT_ALPHA  Change alpha from opacity
                                to transparency
    PNG_TRANSFORM_SWAP_ENDIAN   Byte-swap 16-bit samples
+    PNG_TRANSFORM_GRAY_TO_RGB   Expand grayscale samples
+                                to RGB (or GA to RGBA)

 (This excludes setting a background color, doing gamma transformation,
 dithering, and setting filler.)  If this is the case, simply do this:

    png_read_png(png_ptr, info_ptr, png_transforms, NULL)

-where png_transforms is an integer containing the bitwise OR of
-some set of transformation flags.  This call is equivalent to png_read_info(),
+where png_transforms is an integer containing the bitwise OR of some
+set of transformation flags.  This call is equivalent to png_read_info(),
 followed the set of transformations indicated by the transform mask,
 then png_read_image(), and finally png_read_end().

@@ -1364,10 +1341,33 @@ in until png_read_end() has read the chunk data following the image.
                     for PNG 1.0)
    interlace_type - (PNG_INTERLACE_NONE or
                     PNG_INTERLACE_ADAM7)
-    Any or all of interlace_type, compression_type, of
+
+    Any or all of interlace_type, compression_type, or
    filter_method can be NULL if you are
    not interested in their values.

+    Note that png_get_IHDR() returns 32-bit data into
+    the application's width and height variables.
+    This is an unsafe situation if these are 16-bit
+    variables.  In such situations, the
+    png_get_image_width() and png_get_image_height()
+    functions described below are safer.
+
+    width            = png_get_image_width(png_ptr,
+                         info_ptr);
+    height           = png_get_image_height(png_ptr,
+                         info_ptr);
+    bit_depth        = png_get_bit_depth(png_ptr,
+                         info_ptr);
+    color_type       = png_get_color_type(png_ptr,
+                         info_ptr);
+    filter_method    = png_get_filter_type(png_ptr,
+                         info_ptr);
+    compression_type = png_get_compression_type(png_ptr,
+                         info_ptr);
+    interlace_type   = png_get_interlace_type(png_ptr,
+                         info_ptr);
+
    channels = png_get_channels(png_ptr, info_ptr);
    channels       - number of channels of info for the
                     color type (valid values are 1 (GRAY,
@@ -1387,29 +1387,12 @@ in until png_read_end() has read the chunk data following the image.
                     be in signature[4] through signature[7]
                     (see png_set_sig_bytes())).

-
-    width            = png_get_image_width(png_ptr,
-                         info_ptr);
-    height           = png_get_image_height(png_ptr,
-                         info_ptr);
-    bit_depth        = png_get_bit_depth(png_ptr,
-                         info_ptr);
-    color_type       = png_get_color_type(png_ptr,
-                         info_ptr);
-    filter_method    = png_get_filter_type(png_ptr,
-                         info_ptr);
-    compression_type = png_get_compression_type(png_ptr,
-                         info_ptr);
-    interlace_type   = png_get_interlace_type(png_ptr,
-                         info_ptr);
-
-
 These are also important, but their validity depends on whether the chunk
 has been read.  The png_get_valid(png_ptr, info_ptr, PNG_INFO_<chunk>) and
 png_get_<chunk>(png_ptr, info_ptr, ...) functions return non-zero if the
 data has been read, or zero if it is missing.  The parameters to the
-png_get_<chunk> are set directly if they are simple data types, or a pointer
-into the info_ptr is returned for any complex types.
+png_get_<chunk> are set directly if they are simple data types, or a
+pointer into the info_ptr is returned for any complex types.

    png_get_PLTE(png_ptr, info_ptr, &palette,
                     &num_palette);
@@ -1447,10 +1430,10 @@ into the info_ptr is returned for any complex types.
                     whichever are appropriate for the
                     given color type (png_color_16)

-    png_get_tRNS(png_ptr, info_ptr, &trans, &num_trans,
-                     &trans_color);
-    trans          - array of transparent entries for
-                     palette (PNG_INFO_tRNS)
+    png_get_tRNS(png_ptr, info_ptr, &trans_alpha,
+                     &num_trans, &trans_color);
+    trans_alpha    - array of alpha (transparency)
+                     entries for palette (PNG_INFO_tRNS)
    trans_color    - graylevel or color sample values of
                     the single transparent color for
                     non-paletted images (PNG_INFO_tRNS)
@@ -1493,6 +1476,10 @@ into the info_ptr is returned for any complex types.
                         string for unknown).
    text_ptr[i].lang_key  - keyword in UTF-8
                         (empty string for unknown).
+    Note that the itxt_length, lang, and lang_key
+    members of the text_ptr structure only exist
+    when the library is built with iTXt chunk support.
+
    num_text       - number of comments (same as
                     num_comments; you can put NULL here
                     to avoid the duplication)
@@ -1672,7 +1659,7 @@ things.
 As of libpng version 1.2.9, png_set_expand_gray_1_2_4_to_8() was
 added.  It expands the sample depth without changing tRNS to alpha.

-As of libpng version 1.4.0beta66, not all possible expansions are supported.
+As of libpng version 1.4.0beta104, not all possible expansions are supported.

 In the following table, the 01 means grayscale with depth<8, 31 means
 indexed with depth<8, other numerals represent the color type, "T" means
@@ -1751,10 +1738,10 @@ values of the pixels:

 PNG files have possible bit depths of 1, 2, 4, 8, and 16.  All pixels
 stored in a PNG image have been "scaled" or "shifted" up to the next
-higher possible bit depth (e.g. from 5 bits/sample in the range [0,31] to
-8 bits/sample in the range [0, 255]).  However, it is also possible to
-convert the PNG pixel data back to the original bit depth of the image.
-This call reduces the pixels back down to the original bit depth:
+higher possible bit depth (e.g. from 5 bits/sample in the range [0,31]
+to 8 bits/sample in the range [0, 255]).  However, it is also possible
+to convert the PNG pixel data back to the original bit depth of the
+image.  This call reduces the pixels back down to the original bit depth:

    png_color_8p sig_bit;

@@ -2167,12 +2154,11 @@ point to libpng-allocated storage with the following function:

 This function may be safely called when the relevant storage has
 already been freed, or has not yet been allocated, or was allocated
-by the user and not by libpng,  and will in those
-cases do nothing.  The "seq" parameter is ignored if only one item
-of the selected data type, such as PLTE, is allowed.  If "seq" is not
-1, and multiple items are allowed for the data type identified in
-the mask, such as text or sPLT, only the n'th item in the structure
-is freed, where n is "seq".
+by the user and not by libpng,  and will in those cases do nothing.
+The "seq" parameter is ignored if only one item of the selected data
+type, such as PLTE, is allowed.  If "seq" is not -1, and multiple items
+are allowed for the data type identified in the mask, such as text or
+sPLT, only the n'th item in the structure is freed, where n is "seq".

 The default behavior is only to free data that was allocated internally
 by libpng.  This can be changed, so that libpng will not free the data,
@@ -2211,8 +2197,8 @@ if you transfer responsibility for free'ing text_ptr from libpng to your
 application, your application must not separately free those members.

 The png_free_data() function will turn off the "valid" flag for anything
-it frees.  If you need to turn the flag off for a chunk that was freed by your
-application instead of by libpng, you can use
+it frees.  If you need to turn the flag off for a chunk that was freed by
+your application instead of by libpng, you can use

    png_set_invalid(png_ptr, info_ptr, mask);
    mask - identifies the chunks to be made invalid,
@@ -2522,8 +2508,8 @@ the filter method, for which the only valid values are 0 (as of the
 July 1999 PNG specification, version 1.2) or 64 (if you are writing
 a PNG datastream that is to be embedded in a MNG datastream).  The third
 parameter is a flag that indicates which filter type(s) are to be tested
-for each scanline.  See the PNG specification for details on the specific filter
-types.
+for each scanline.  See the PNG specification for details on the specific
+filter types.


    /* turn on or off filtering, and/or choose
@@ -2689,10 +2675,10 @@ width, height, bit_depth, and color_type must be the same in each call.
                     appropriate for the given color type
                     (png_color_16)

-    png_set_tRNS(png_ptr, info_ptr, trans, num_trans,
-       trans_color);
-    trans          - array of transparent entries for
-                     palette (PNG_INFO_tRNS)
+    png_set_tRNS(png_ptr, info_ptr, trans_alpha,
+       num_trans, trans_color);
+    trans_alpha    - array of alpha (transparency)
+                     entries for palette (PNG_INFO_tRNS)
    trans_color    - graylevel or color sample values
                     (in order red, green, blue) of the
                     single transparent color for
@@ -2732,6 +2718,10 @@ width, height, bit_depth, and color_type must be the same in each call.
                         empty for unknown).
    text_ptr[i].translated_keyword  - keyword in UTF-8 (NULL
                         or empty for unknown).
+    Note that the itxt_length, lang, and lang_key
+    members of the text_ptr structure only exist
+    when the library is built with iTXt chunk support.
+
    num_text       - number of comments

    png_set_sPLT(png_ptr, info_ptr, &palette_ptr,
@@ -2937,10 +2927,10 @@ this with a call to png_write_info().

 Note that there is one transformation you may need to do before
 png_write_info().  In PNG files, the alpha channel in an image is the
-level of opacity.  If your data is supplied as a level of
-transparency, you can invert the alpha channel before you write it, so
-that 0 is fully transparent and 255 (in 8-bit or paletted images) or
-65535 (in 16-bit images) is fully opaque, with
+level of opacity.  If your data is supplied as a level of transparency,
+you can invert the alpha channel before you write it, so that 0 is
+fully transparent and 255 (in 8-bit or paletted images) or 65535
+(in 16-bit images) is fully opaque, with

    png_set_invert_alpha(png_ptr);

@@ -3127,14 +3117,13 @@ a single row_pointer instead of an array of row_pointers:

    png_write_row(png_ptr, row_pointer);

-When the file is interlaced, things can get a good deal more
-complicated.  The only currently (as of the PNG Specification
-version 1.2, dated July 1999) defined interlacing scheme for PNG files
-is the "Adam7" interlace scheme, that breaks down an
-image into seven smaller images of varying size.  libpng will build
-these images for you, or you can do them yourself.  If you want to
-build them yourself, see the PNG specification for details of which
-pixels to write when.
+When the file is interlaced, things can get a good deal more complicated.
+The only currently (as of the PNG Specification version 1.2, dated July
+1999) defined interlacing scheme for PNG files is the "Adam7" interlace
+scheme, that breaks down an image into seven smaller images of varying
+size.  libpng will build these images for you, or you can do them
+yourself.  If you want to build them yourself, see the PNG specification
+for details of which pixels to write when.

 If you don't want libpng to handle the interlacing details, just
 use png_set_interlace_handling() and call png_write_rows() the
@@ -3146,17 +3135,17 @@ writing any rows:
    number_of_passes =
       png_set_interlace_handling(png_ptr);

-This will return the number of passes needed.  Currently, this
-is seven, but may change if another interlace type is added.
+This will return the number of passes needed.  Currently, this is seven,
+but may change if another interlace type is added.

 Then write the complete image number_of_passes times.

    png_write_rows(png_ptr, row_pointers,
       number_of_rows);

-As some of these rows are not used, and thus return immediately,
-you may want to read about interlacing in the PNG specification,
-and only update the rows that are actually used.
+As some of these rows are not used, and thus return immediately, you may
+want to read about interlacing in the PNG specification, and only update
+the rows that are actually used.

 .SS Finishing a sequential write

@@ -3189,15 +3178,14 @@ point to libpng-allocated storage with the following function:

 This function may be safely called when the relevant storage has
 already been freed, or has not yet been allocated, or was allocated
-by the user  and not by libpng,  and will in those
-cases do nothing.  The "seq" parameter is ignored if only one item
-of the selected data type, such as PLTE, is allowed.  If "seq" is not
-1, and multiple items are allowed for the data type identified in
-the mask, such as text or sPLT, only the n'th item in the structure
-is freed, where n is "seq".
+by the user  and not by libpng,  and will in those cases do nothing.
+The "seq" parameter is ignored if only one item of the selected data
+type, such as PLTE, is allowed.  If "seq" is not -1, and multiple items
+are allowed for the data type identified in the mask, such as text or
+sPLT, only the n'th item in the structure is freed, where n is "seq".

-If you allocated data such as a palette that you passed
-in to libpng with png_set_*, you must not free it until just before the call to
+If you allocated data such as a palette that you passed in to libpng
+with png_set_*, you must not free it until just before the call to
 png_destroy_write_struct().

 The default behavior is only to free data that was allocated internally
@@ -3263,16 +3251,18 @@ goes through callbacks that are user-settable.  The default routines are
 in pngmem.c, pngrio.c, pngwio.c, and pngerror.c, respectively.  To change
 these functions, call the appropriate png_set_*_fn() function.

-Memory allocation is done through the functions png_malloc()
-and png_free().  These currently just call the standard C functions.  If
-your pointers can't access more then 64K at a time, you will want to set
-MAXSEG_64K in zlib.h.  Since it is unlikely that the method of handling
-memory allocation on a platform will change between applications, these
-functions must be modified in the library at compile time.  If you prefer
-to use a different method of allocating and freeing data, you can use
-png_create_read_struct_2() or png_create_write_struct_2() to register
-your own functions as described above.
-These functions also provide a void pointer that can be retrieved via
+Memory allocation is done through the functions png_malloc(), png_calloc(),
+and png_free().  These currently just call the standard C functions.
+png_calloc() calls png_malloc() and then png_memset() to clear the newly
+allocated memory to zero.  If your pointers can't access more then 64K
+at a time, you will want to set MAXSEG_64K in zlib.h.  Since it is
+unlikely that the method of handling memory allocation on a platform
+will change between applications, these functions must be modified in
+the library at compile time.  If you prefer to use a different method
+of allocating and freeing data, you can use png_create_read_struct_2() or
+png_create_write_struct_2() to register your own functions as described
+above.  These functions also provide a void pointer that can be retrieved
+via

    mem_ptr=png_get_mem_ptr(png_ptr);

@@ -3364,10 +3354,10 @@ The motivation behind using setjmp() and longjmp() is the C++ throw and
 catch exception handling methods.  This makes the code much easier to write,
 as there is no need to check every return code of every function call.
 However, there are some uncertainties about the status of local variables
-after a longjmp, so the user may want to be careful about doing anything after
-setjmp returns non-zero besides returning itself.  Consult your compiler
-documentation for more details.  For an alternative approach, you may wish
-to use the "cexcept" facility (see http://cexcept.sourceforge.net).
+after a longjmp, so the user may want to be careful about doing anything
+after setjmp returns non-zero besides returning itself.  Consult your
+compiler documentation for more details.  For an alternative approach, you
+may wish to use the "cexcept" facility (see http://cexcept.sourceforge.net).

 .SS Custom chunks

@@ -3379,15 +3369,14 @@ library code itself needs to know about interactions between your
 chunk and existing `intrinsic' chunks.

 If you need to write a new intrinsic chunk, first read the PNG
-specification. Acquire a first level of
-understanding of how it works.  Pay particular attention to the
-sections that describe chunk names, and look at how other chunks were
-designed, so you can do things similarly.  Second, check out the
-sections of libpng that read and write chunks.  Try to find a chunk
-that is similar to yours and use it as a template.  More details can
-be found in the comments inside the code.  It is best to handle unknown
-chunks in a generic method, via callback functions, instead of by
-modifying libpng functions.
+specification. Acquire a first level of understanding of how it works.
+Pay particular attention to the sections that describe chunk names,
+and look at how other chunks were designed, so you can do things
+similarly.  Second, check out the sections of libpng that read and
+write chunks.  Try to find a chunk that is similar to yours and use
+it as a template.  More details can be found in the comments inside
+the code.  It is best to handle unknown chunks in a generic method,
+via callback functions, instead of by modifying libpng functions.

 If you wish to write your own transformation for the data, look through
 the part of the code that does the transformations, and check out some of
@@ -3564,14 +3553,14 @@ off en masse with compiler directives that define
 PNG_NO_READ[or WRITE]_TRANSFORMS, or PNG_NO_READ[or WRITE]_ANCILLARY_CHUNKS,
 or all four,
 along with directives to turn on any of the capabilities that you do
-want.  The PNG_NO_READ[or WRITE]_TRANSFORMS directives disable
-the extra transformations but still leave the library fully capable of reading
-and writing PNG files with all known public chunks
-Use of the PNG_NO_READ[or WRITE]_ANCILLARY_CHUNKS directive
-produces a library that is incapable of reading or writing ancillary chunks.
-If you are not using the progressive reading capability, you can
-turn that off with PNG_NO_PROGRESSIVE_READ (don't confuse
-this with the INTERLACING capability, which you'll still have).
+want.  The PNG_NO_READ[or WRITE]_TRANSFORMS directives disable the extra
+transformations but still leave the library fully capable of reading
+and writing PNG files with all known public chunks. Use of the
+PNG_NO_READ[or WRITE]_ANCILLARY_CHUNKS directive produces a library
+that is incapable of reading or writing ancillary chunks.  If you are
+not using the progressive reading capability, you can turn that off
+with PNG_NO_PROGRESSIVE_READ (don't confuse this with the INTERLACING
+capability, which you'll still have).

 All the reading and writing specific code are in separate files, so the
 linker should only grab the files it needs.  However, if you want to
@@ -3706,6 +3695,9 @@ accomplish this, the functions png_create_read_struct_2(),
 png_create_write_struct_2(), png_set_mem_fn(), png_get_mem_ptr(),
 png_malloc_default(), and png_free_default() were added.

+Support for the iTXt chunk has been enabled by default as of
+version 1.2.41.
+
 Support for certain MNG features was enabled.

 Support for numbered error messages was added.  However, we never got
@@ -3760,20 +3752,23 @@ selection of assembler code features:
 We replaced all of these functions with simple stubs in libpng-1.2.20,
 when the Intel assembler code was removed due to a licensing issue.

-.SH IX.  Changes to Libpng from version 1.0.x/1.2.x to 1.4.x
+These macros are deprecated:

-Private libpng prototypes and macro definitions were moved from
-png.h and pngconf.h into a new pngpriv.h header file.
+    PNG_READ_TRANSFORMS_NOT_SUPPORTED
+    PNG_PROGRESSIVE_READ_NOT_SUPPORTED
+    PNG_NO_SEQUENTIAL_READ_SUPPORTED
+    PNG_WRITE_TRANSFORMS_NOT_SUPPORTED
+    PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED
+    PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED

-Support for the iTXt chunk has been enabled by default.
+They have been replaced, respectively, by:

-Support for global arrays was disabled by default.
-
-Some obsolete/deprecated macros and functions have been removed.
-
-The PNG_1_0_X and PNG_1_2_X macros were eliminated.
-
-Many WIN32_WCE #ifdefs were removed.
+    PNG_NO_READ_TRANSFORMS
+    PNG_NO_PROGRESSIVE_READ
+    PNG_NO_SEQUENTIAL_READ
+    PNG_NO_WRITE_TRANSFORMS
+    PNG_NO_READ_ANCILLARY_CHUNKS
+    PNG_NO_WRITE_ANCILLARY_CHUNKS

 PNG_MAX_UINT was replaced with PNG_UINT_31_MAX.  It has been
 deprecated since libpng-1.0.16 and libpng-1.2.6.
@@ -3784,19 +3779,23 @@ was replaced with
    !png_sig_cmp(sig, 0, num)
 It has been deprecated since libpng-0.90.

-The functions png_read_init(info_ptr), png_write_init(info_ptr),
-png_info_init(info_ptr), png_read_destroy(), and png_write_destroy()
-have been removed.  They have been deprecated since libpng-0.95.
-
 The function
    png_set_gray_1_2_4_to_8()
 which also expands tRNS to alpha was replaced with
    png_set_expand_gray_1_2_4_to_8()
 which does not. It has been deprecated since libpng-1.0.18 and 1.2.9.
+.SH IX.  Changes to Libpng from version 1.0.x/1.2.x to 1.4.x

-Support for numbered error messages was removed by default, since we
-never got around to actually numbering the error messages. The function
-png_set_strip_error_numbers() was removed from the library by default.
+Private libpng prototypes and macro definitions were moved from
+png.h and pngconf.h into a new pngpriv.h header file.
+
+Support for global arrays was removed.
+
+Some obsolete/deprecated macros and functions have been removed.
+
+The obsolete, unused pnggccrd.c and pngvcrd.files were removed.
+
+The PNG_1_0_X and PNG_1_2_X macros were eliminated.

 Functions png_set_benign_errors(), png_benign_error(), and
 png_chunk_benign_error() were added.
@@ -3806,8 +3805,40 @@ will allocate for reading chunks was added, as a security measure.
 The functions png_set_chunk_cache_max() and png_get_chunk_cache_max()
 were added to the library.

-We implemented support for I/O states. Added png_ptr member io_state, and
-functions png_get_io_chunk_name() and png_get_io_state() in pngget.c
+We implemented support for I/O states by adding png_ptr member io_state
+and functions png_get_io_chunk_name() and png_get_io_state() in pngget.c
+
+The png_calloc() function was added and is used in place of
+of "png_malloc(); png_memset();" except in the case in png_read_png()
+where the array consists of pointers; in this case a "for" loop is used
+after the png_malloc() to set the pointers to NULL.
+
+We added PNG_TRANSFORM_GRAY_TO_RGB to the available high-level
+input transforms.
+
+We added the png_set_premultiply_alpha and
+png_do_read_premultiply_alpha() functions.
+
+The call to png_do_chop() in pngrtran.c, which reduces 16-bit input
+files to 8-bit bit depth, was relocated ahead of the building
+of gamma tables.  This allows us to build 8-bit tables instead
+of 16-bit tables, when only 8-bit tables are needed. This avoids 
+wasting some computing resources when the application has called
+the png_set_strip_16() function and encounters a 16-bit PNG file.
+
+Checking for and reporting of errors in the IHDR chunk is more thorough.
+
+The PNG_LEGACY_SUPPORTED macro was eliminated.
+
+Many WIN32_WCE #ifdefs were removed.
+
+The functions png_read_init(info_ptr), png_write_init(info_ptr),
+png_info_init(info_ptr), png_read_destroy(), and png_write_destroy()
+have been removed.  They have been deprecated since libpng-0.95.
+
+Support for numbered error messages was removed by default, since we
+never got around to actually numbering the error messages. The function
+png_set_strip_error_numbers() was removed from the library by default.

 The png_permit_empty_plte() was removed. It has been deprecated
 since libpng-1.0.9.  Use png_permit_mng_features() instead.
@@ -3817,7 +3848,8 @@ png_set_mmx_thresholds(), png_get_asm_flags(),
 png_get_mmx_bitdepth_threshold(), png_get_mmx_rowbytes_threshold(),
 png_set_asm_flags(), and png_mmx_supported()

-We removed the png_memcpy_check() and png_memset_check() functions.
+We removed the png_check_sig(), png_memcpy_check(), and
+png_memset_check() functions.

 We changed the prototype for png_malloc() from
    png_malloc(png_structp png_ptr, png_uint_32 size)
@@ -3833,17 +3865,19 @@ allocates.

 The png_zalloc() and png_zfree() functions are no longer exported.

-The png_calloc() function was added.
-
 We removed the trailing '.' from the warning and error messages.

+The png_struct and info_struct members "trans" and "trans_values" were
+changed to "trans_alpha" and "trans_color", respectively.

 .SH X. Detecting libpng

 The png_get_io_ptr() function has been present since libpng-0.88, has never
 changed, and is unaffected by conditional compilation macros.  It is the
 best choice for use in configure scripts for detecting the presence of any
-libpng version since 0.88.
+libpng version since 0.88.  In an autoconf "configure.in" you could use
+
+    AC_CHECK_LIB(png, png_get_io_ptr, ...

 .SH XI. Source code repository

@@ -3888,6 +3922,15 @@ We use 3-space indentation, except for continued statements which
 are usually indented the same as the first line of the statement
 plus four more spaces.

+For macro definitions we use 2-space indentation, always leaving the "#"
+in the first column.
+
+    #ifndef PNG_NO_FEATURE
+    #  ifndef PNG_FEATURE_SUPPORTED
+    #    define PNG_FEATURE_SUPPORTED
+    #  endif
+    #endif
+
 Comments appear with the leading "/*" at the same indentation as
 the statement that follows the comment:

@@ -3920,7 +3963,10 @@ exported functions are marked with PNGAPI:
    body;
 }

-The prototypes for all exported functions appear in png.h.
+The prototypes for all exported functions appear in png.h,
+above the comment that says
+
+    /* Maintainer: Put new public prototypes here ... */

 We mark all non-exported functions with "/* PRIVATE */"":

@@ -3930,9 +3976,12 @@ We mark all non-exported functions with "/* PRIVATE */"":
    body;
 }

-The prototypes for non-exported functions can appear in
+The prototypes for non-exported functions (except for those in
+pngtest) appear in
 pngpriv.h
-or in the file where the function is located.
+above the comment that says
+
+  /* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */

 The names of all exported functions and variables begin
 with  "png_", and all publicly visible C preprocessor
@@ -3946,23 +3995,24 @@ cast, nor do we put one between a function name and the
 left parenthesis that follows it:

    for (i = 2; i > 0; --i)
-       x[i] = a(x) + (int)b;
+       y[i] = a(x) + (int)b;

 We prefer #ifdef and #ifndef to #if defined() and if !defined()
 when there is only one macro being tested.

-Other rules can be inferred by inspecting the libpng
-source.
+We do not use the TAB character for indentation in the C sources.
+
+Other rules can be inferred by inspecting the libpng source.

 .SH XIII. Y2K Compliance in libpng

-June 27, 2009
+November 22, 2009

 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.

 This is your unofficial assurance that libpng from version 0.71 and
-upward through 1.4.0beta66 are Y2K compliant.  It is my belief that earlier
+upward through 1.4.0beta104 are Y2K compliant.  It is my belief that earlier
 versions were also Y2K compliant.

 Libpng only has three year fields.  One is a 2-byte unsigned integer that
@@ -4130,7 +4180,9 @@ the first widely used release:
 1.4.0beta9-14       14    10400  14.so.0.0[.0]
 1.2.13              13    10213  12.so.0.13[.0]
 1.4.0beta15-36      14    10400  14.so.0.0[.0]
- 1.4.0beta37-66      14    10400  14.so.14.0[.0]
+ 1.4.0beta37-87      14    10400  14.so.14.0[.0]
+ 1.4.0rc01           14    10400  14.so.14.0[.0]
+ 1.4.0beta88-104     14    10400  14.so.14.0[.0]

 Henceforth the source version will match the shared-library minor
 and patch numbers; the shared-library major version number will be
@@ -4186,7 +4238,7 @@ possible without all of you.

 Thanks to Frank J. T. Wojcik for helping with the documentation.

-Libpng version 1.4.0beta66 - June 27, 2009:
+Libpng version 1.4.0beta104 - November 22, 2009:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).

@@ -4209,7 +4261,7 @@ this sentence.

 This code is released under the libpng license.

-libpng versions 1.2.6, August 15, 2004, through 1.4.0beta66, June 27, 2009, are
+libpng versions 1.2.6, August 15, 2004, through 1.4.0beta104, November 22, 2009, are
 Copyright (c) 2004,2006-2007 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.2.5
 with the following individual added to the list of Contributing Authors
@@ -4308,7 +4360,7 @@ certification mark of the Open Source Initiative.

 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-June 27, 2009
+November 22, 2009

 .\" end of man page

--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,12 +1,18 @@
-.TH LIBPNGPF 3 "June 27, 2009"
+.TH LIBPNGPF 3 "November 22, 2009"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0beta66
+libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0beta104
 (private functions)
 .SH SYNOPSIS
 \fB#include <png.h>\fP

+\fB#include \fI"pngpriv.h"
+
 \fI\fB

+\fBvoid png_64bit_product (long \fP\fIv1\fP\fB, long \fP\fIv2\fP\fB, unsigned long \fI*hi_product,
+
+\fBunsigned long \fI*lo_product\fP\fB);\fP
+
 \fI\fB

 \fBvoid png_build_gamma_table (png_structp \fIpng_ptr\fP\fB);\fP
@@ -27,6 +33,12 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0beta66

 \fI\fB

+\fBint png_check_cHRM_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_fixed_point \fP\fIint_white_x\fP\fB, png_fixed_point \fP\fIint_white_y\fP\fB, png_fixed_point \fP\fIint_red_x\fP\fB, png_fixed_point \fP\fIint_red_y\fP\fB, png_fixed_point \fP\fIint_green_x\fP\fB, png_fixed_point \fP\fIint_green_y\fP\fB, png_fixed_point \fP\fIint_blue_x\fP\fB, png_fixed_point \fIint_blue_y\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_check_chunk_name (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIchunk_name\fP\fB);\fP

 \fI\fB
@@ -39,6 +51,12 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0beta66

 \fI\fB

+\fBvoid png_check_IHDR (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIwidth\fP\fB, png_uint_32 \fP\fIheight\fP\fB, int \fP\fIbit_depth\fP\fB, int \fP\fIcolor_type\fP\fB, int \fP\fIinterlace_type\fP\fB, int \fP\fIcompression_type\fP\fB, int \fIfilter_type\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_combine_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIrow\fP\fB, int \fImask\fP\fB);\fP

 \fI\fB
@@ -81,6 +99,18 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0beta66

 \fI\fB

+\fBint png_debug(int \fP\fIlevel\fP\fB, png_const_charp \fImessage\fP\fB);\fP
+
+\fI\fB
+
+\fBint png_debug1(int \fP\fIlevel\fP\fB, png_const_charp \fP\fImessage\fP\fB, \fIp1\fP\fB);\fP
+
+\fI\fB
+
+\fBint png_debug2(int \fP\fIlevel\fP\fB, png_const_charp \fP\fImessage\fP\fB, \fP\fIp1\fP\fB, \fIp2\fP\fB);\fP
+
+\fI\fB
+
 \fBvoid png_decompress_chunk (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIcomp_type\fP\fB, png_size_t \fP\fIchunklength\fP\fB, png_size_t \fP\fIprefix_length\fP\fB, png_size_t \fI*data_length\fP\fB);\fP

 \fI\fB
@@ -543,6 +573,8 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0beta66

 \fI\fB

+\fBvoid png_read_destroy (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_infop \fIend_info_ptr\fP\fB);\fP
+
 \fI\fB

 \fBvoid png_read_filter_row (png_structp \fP\fIpng_ptr\fP\fB, png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_bytep \fP\fIprev_row\fP\fB, int \fIfilter\fP\fB);\fP
@@ -603,6 +635,8 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.4.0beta66

 \fI\fB

+\fBvoid png_write_destroy (png_structp \fIpng_ptr\fP\fB);\fP
+
 \fI\fB

 \fBvoid png_write_filtered_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIfiltered_row\fP\fB);\fP
--- a/ltmain.sh
+++ b/ltmain.sh
@@ -1,6 +1,6 @@
 # Generated from ltmain.m4sh.

-# ltmain.sh (GNU libtool) 2.2.6
+# ltmain.sh (GNU libtool) 2.2.6b
 # Written by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996

 # Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006, 2007 2008 Free Software Foundation, Inc.
@@ -65,7 +65,7 @@
 #       compiler:		$LTCC
 #       compiler flags:		$LTCFLAGS
 #       linker:		$LD (gnu? $with_gnu_ld)
-#       $progname:		(GNU libtool) 2.2.6
+#       $progname:		(GNU libtool) 2.2.6b
 #       automake:		$automake_version
 #       autoconf:		$autoconf_version
 #
@@ -73,9 +73,9 @@

 PROGRAM=ltmain.sh
 PACKAGE=libtool
-VERSION=2.2.6
+VERSION=2.2.6b
 TIMESTAMP=""
-package_revision=1.3012
+package_revision=1.3017

 # Be Bourne compatible
 if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
@@ -116,15 +116,15 @@ $lt_unset CDPATH

 : ${CP="cp -f"}
 : ${ECHO="echo"}
-: ${EGREP="/usr/bin/grep -E"}
-: ${FGREP="/usr/bin/grep -F"}
-: ${GREP="/usr/bin/grep"}
+: ${EGREP="/bin/grep -E"}
+: ${FGREP="/bin/grep -F"}
+: ${GREP="/bin/grep"}
 : ${LN_S="ln -s"}
 : ${MAKE="make"}
 : ${MKDIR="mkdir"}
 : ${MV="mv -f"}
 : ${RM="rm -f"}
-: ${SED="/opt/local/bin/gsed"}
+: ${SED="/bin/sed"}
 : ${SHELL="${CONFIG_SHELL-/bin/sh}"}
 : ${Xsed="$SED -e 1s/^X//"}

--- a/49
+++ b/49
@@ -1,10 +1,10 @@
 #! /bin/sh
 # Common stub for a few missing GNU programs while installing.

-scriptversion=2006-05-10.23
+scriptversion=2009-04-28.21; # UTC

-# Copyright (C) 1996, 1997, 1999, 2000, 2002, 2003, 2004, 2005, 2006
-#   Free Software Foundation, Inc.
+# Copyright (C) 1996, 1997, 1999, 2000, 2002, 2003, 2004, 2005, 2006,
+# 2008, 2009 Free Software Foundation, Inc.
 # Originally by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.

 # This program is free software; you can redistribute it and/or modify
@@ -18,9 +18,7 @@ scriptversion=2006-05-10.23
 # GNU General Public License for more details.

 # You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-# 02110-1301, USA.
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.

 # As a special exception to the GNU General Public License, if you
 # distribute this file as part of a program that contains a
@@ -89,6 +87,9 @@ Supported PROGRAM values:
  tar          try tar, gnutar, gtar, then tar without non-portable flags
  yacc         create \`y.tab.[ch]', if possible, from existing .[ch]

+Version suffixes to PROGRAM as well as the prefixes \`gnu-', \`gnu', and
+\`g' are ignored when checking the name.
+
 Send bug reports to <bug-automake@gnu.org>."
    exit $?
    ;;
@@ -106,15 +107,22 @@ Send bug reports to <bug-automake@gnu.org>."

 esac

+# normalize program name to check for.
+program=`echo "$1" | sed '
+  s/^gnu-//; t
+  s/^gnu//; t
+  s/^g//; t'`
+
 # Now exit if we have it, but it failed.  Also exit now if we
 # don't have it and --version was passed (most likely to detect
-# the program).
+# the program).  This is about non-GNU programs, so use $1 not
+# $program.
 case $1 in
-  lex|yacc)
+  lex*|yacc*)
    # Not GNU programs, they don't have --version.
    ;;

-  tar)
+  tar*)
    if test -n "$run"; then
       echo 1>&2 "ERROR: \`tar' requires --run"
       exit 1
@@ -138,7 +146,7 @@ esac

 # If it does not exist, or fails to run (possibly an outdated version),
 # try to emulate it.
-case $1 in
+case $program in
  aclocal*)
    echo 1>&2 "\
 WARNING: \`$1' is $msg.  You should only need it if
@@ -148,7 +156,7 @@ WARNING: \`$1' is $msg.  You should only need it if
    touch aclocal.m4
    ;;

-  autoconf)
+  autoconf*)
    echo 1>&2 "\
 WARNING: \`$1' is $msg.  You should only need it if
         you modified \`${configure_ac}'.  You might want to install the
@@ -157,7 +165,7 @@ WARNING: \`$1' is $msg.  You should only need it if
    touch configure
    ;;

-  autoheader)
+  autoheader*)
    echo 1>&2 "\
 WARNING: \`$1' is $msg.  You should only need it if
         you modified \`acconfig.h' or \`${configure_ac}'.  You might want
@@ -187,7 +195,7 @@ WARNING: \`$1' is $msg.  You should only need it if
 	   while read f; do touch "$f"; done
    ;;

-  autom4te)
+  autom4te*)
    echo 1>&2 "\
 WARNING: \`$1' is needed, but is $msg.
         You might have modified some files without having the
@@ -210,7 +218,7 @@ WARNING: \`$1' is needed, but is $msg.
    fi
    ;;

-  bison|yacc)
+  bison*|yacc*)
    echo 1>&2 "\
 WARNING: \`$1' $msg.  You should only need it if
         you modified a \`.y' file.  You may need the \`Bison' package
@@ -240,7 +248,7 @@ WARNING: \`$1' $msg.  You should only need it if
    fi
    ;;

-  lex|flex)
+  lex*|flex*)
    echo 1>&2 "\
 WARNING: \`$1' is $msg.  You should only need it if
         you modified a \`.l' file.  You may need the \`Flex' package
@@ -263,7 +271,7 @@ WARNING: \`$1' is $msg.  You should only need it if
    fi
    ;;

-  help2man)
+  help2man*)
    echo 1>&2 "\
 WARNING: \`$1' is $msg.  You should only need it if
 	 you modified a dependency of a manual page.  You may need the
@@ -277,11 +285,11 @@ WARNING: \`$1' is $msg.  You should only need it if
    else
 	test -z "$file" || exec >$file
 	echo ".ab help2man is required to generate this page"
-	exit 1
+	exit $?
    fi
    ;;

-  makeinfo)
+  makeinfo*)
    echo 1>&2 "\
 WARNING: \`$1' is $msg.  You should only need it if
         you modified a \`.texi' or \`.texinfo' file, or any other file
@@ -310,7 +318,7 @@ WARNING: \`$1' is $msg.  You should only need it if
    touch $file
    ;;

-  tar)
+  tar*)
    shift

    # We have already tried tar in the generic part.
@@ -363,5 +371,6 @@ exit 0
 # eval: (add-hook 'write-file-hooks 'time-stamp)
 # time-stamp-start: "scriptversion="
 # time-stamp-format: "%:y-%02m-%02d.%02H"
-# time-stamp-end: "$"
+# time-stamp-time-zone: "UTC"
+# time-stamp-end: "; # UTC"
 # End:
--- a/5
+++ b/5
@@ -1,7 +1,7 @@
 #! /bin/sh
 # mkinstalldirs --- make directory hierarchy

-scriptversion=2006-05-11.19
+scriptversion=2009-04-28.21; # UTC

 # Original author: Noah Friedman <friedman@prep.ai.mit.edu>
 # Created: 1993-05-16
@@ -157,5 +157,6 @@ exit $errstatus
 # eval: (add-hook 'write-file-hooks 'time-stamp)
 # time-stamp-start: "scriptversion="
 # time-stamp-format: "%:y-%02m-%02d.%02H"
-# time-stamp-end: "$"
+# time-stamp-time-zone: "UTC"
+# time-stamp-end: "; # UTC"
 # End:
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "June 27, 2009"
+.TH PNG 5 "November 22, 2009"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
--- a/png.c
+++ b/png.c
@@ -1,7 +1,7 @@

 /* png.c - location for general purpose libpng functions
 *
- * Last changed in libpng 1.4.0 [June 27, 2009]
+ * Last changed in libpng 1.4.0 [November 22, 2009]
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -16,74 +16,11 @@
 #include "pngpriv.h"

 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_4_0beta66 Your_png_h_is_not_version_1_4_0beta66;
+typedef version_1_4_0beta104 Your_png_h_is_not_version_1_4_0beta104;

 /* Version information for C files.  This had better match the version
- * string defined in png.h.  */
-
-#ifdef PNG_USE_GLOBAL_ARRAYS
-/* png_libpng_ver was changed to a function in version 1.0.5c */
-PNG_CONST char png_libpng_ver[18] = PNG_LIBPNG_VER_STRING;
-
-#ifdef PNG_READ_SUPPORTED
-
-/* png_sig was changed to a function in version 1.0.5c */
-/* Place to hold the signature string for a PNG file. */
-PNG_CONST png_byte FARDATA png_sig[8] = {137, 80, 78, 71, 13, 10, 26, 10};
-#endif /* PNG_READ_SUPPORTED */
-
-/* Invoke global declarations for constant strings for known chunk types */
-PNG_IHDR;
-PNG_IDAT;
-PNG_IEND;
-PNG_PLTE;
-PNG_bKGD;
-PNG_cHRM;
-PNG_gAMA;
-PNG_hIST;
-PNG_iCCP;
-PNG_iTXt;
-PNG_oFFs;
-PNG_pCAL;
-PNG_sCAL;
-PNG_pHYs;
-PNG_sBIT;
-PNG_sPLT;
-PNG_sRGB;
-PNG_tEXt;
-PNG_tIME;
-PNG_tRNS;
-PNG_zTXt;
-
-#ifdef PNG_READ_SUPPORTED
-/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
-
-/* Start of interlace block */
-PNG_CONST int FARDATA png_pass_start[] = {0, 4, 0, 2, 0, 1, 0};
-
-/* Offset to next interlace block */
-PNG_CONST int FARDATA png_pass_inc[] = {8, 8, 4, 4, 2, 2, 1};
-
-/* Start of interlace block in the y direction */
-PNG_CONST int FARDATA png_pass_ystart[] = {0, 0, 4, 0, 2, 0, 1};
-
-/* Offset to next interlace block in the y direction */
-PNG_CONST int FARDATA png_pass_yinc[] = {8, 8, 8, 4, 4, 2, 2};
-
-/* Height of interlace block.  This is not currently used - if you need
- * it, uncomment it here and in png.h
-PNG_CONST int FARDATA png_pass_height[] = {8, 8, 4, 4, 2, 2, 1};
-*/
-
-/* Mask to determine which pixels are valid in a pass */
-PNG_CONST int FARDATA png_pass_mask[] = {0x80, 0x08, 0x88, 0x22, 0xaa, 0x55, 0xff};
-
-/* Mask to determine which pixels to overwrite while displaying */
-PNG_CONST int FARDATA png_pass_dsp_mask[]
-   = {0xff, 0x0f, 0xff, 0x33, 0xff, 0x55, 0xff};
-
-#endif /* PNG_READ_SUPPORTED */
-#endif /* PNG_USE_GLOBAL_ARRAYS */
+ * string defined in png.h.
+ */

 /* Tells libpng that we have already handled the first "num_bytes" bytes
 * of the PNG file signature.  If the PNG data is embedded into another
@@ -95,9 +32,11 @@ PNG_CONST int FARDATA png_pass_dsp_mask[]
 void PNGAPI
 png_set_sig_bytes(png_structp png_ptr, int num_bytes)
 {
+   png_debug(1, "in png_set_sig_bytes");
+
   if (png_ptr == NULL)
      return;
-   png_debug(1, "in png_set_sig_bytes");
+
   if (num_bytes > 8)
      png_error(png_ptr, "Too many bytes for PNG signature");

@@ -134,7 +73,7 @@ png_sig_cmp(png_bytep sig, png_size_t start, png_size_t num_to_check)

 #if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
 /* Function to allocate memory for zlib and clear it to 0. */
-voidpf /* private */
+voidpf /* PRIVATE */
 png_zalloc(voidpf png_ptr, uInt items, uInt size)
 {
   png_voidp ptr;
@@ -159,7 +98,7 @@ png_zalloc(voidpf png_ptr, uInt items, uInt size)
 }

 /* Function to free memory for zlib */
-void /* private */
+void /* PRIVATE */
 png_zfree(voidpf png_ptr, voidpf ptr)
 {
   png_free((png_structp)png_ptr, (png_voidp)ptr);
@@ -212,8 +151,10 @@ png_create_info_struct(png_structp png_ptr)
   png_infop info_ptr;

   png_debug(1, "in png_create_info_struct");
+
   if (png_ptr == NULL)
      return (NULL);
+
 #ifdef PNG_USER_MEM_SUPPORTED
   info_ptr = (png_infop)png_create_struct_2(PNG_STRUCT_INFO,
      png_ptr->malloc_fn, png_ptr->mem_ptr);
@@ -235,10 +176,12 @@ void PNGAPI
 png_destroy_info_struct(png_structp png_ptr, png_infopp info_ptr_ptr)
 {
   png_infop info_ptr = NULL;
+
+   png_debug(1, "in png_destroy_info_struct");
+
   if (png_ptr == NULL)
      return;

-   png_debug(1, "in png_destroy_info_struct");
   if (info_ptr_ptr != NULL)
      info_ptr = *info_ptr_ptr;

@@ -266,11 +209,11 @@ png_info_init_3(png_infopp ptr_ptr, png_size_t png_info_struct_size)
 {
   png_infop info_ptr = *ptr_ptr;

+   png_debug(1, "in png_info_init_3");
+
   if (info_ptr == NULL)
      return;

-   png_debug(1, "in png_info_init_3");
-
   if (png_sizeof(png_info) > png_info_struct_size)
   {
      png_destroy_struct(info_ptr);
@@ -282,14 +225,15 @@ png_info_init_3(png_infopp ptr_ptr, png_size_t png_info_struct_size)
   png_memset(info_ptr, 0, png_sizeof(png_info));
 }

-#ifdef PNG_FREE_ME_SUPPORTED
 void PNGAPI
 png_data_freer(png_structp png_ptr, png_infop info_ptr,
   int freer, png_uint_32 mask)
 {
   png_debug(1, "in png_data_freer");
+
   if (png_ptr == NULL || info_ptr == NULL)
      return;
+
   if (freer == PNG_DESTROY_WILL_FREE_DATA)
      info_ptr->free_me |= mask;
   else if (freer == PNG_USER_WILL_FREE_DATA)
@@ -298,23 +242,19 @@ png_data_freer(png_structp png_ptr, png_infop info_ptr,
      png_warning(png_ptr,
         "Unknown freer parameter in png_data_freer");
 }
-#endif

 void PNGAPI
 png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
   int num)
 {
   png_debug(1, "in png_free_data");
+
   if (png_ptr == NULL || info_ptr == NULL)
      return;

-#if defined(PNG_TEXT_SUPPORTED)
+#ifdef PNG_TEXT_SUPPORTED
   /* Free text item num or (if num == -1) all text items */
-#ifdef PNG_FREE_ME_SUPPORTED
   if ((mask & PNG_FREE_TEXT) & info_ptr->free_me)
-#else
-   if (mask & PNG_FREE_TEXT)
-#endif
   {
      if (num != -1)
      {
@@ -336,30 +276,19 @@ png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
   }
 #endif

-#if defined(PNG_tRNS_SUPPORTED)
+#ifdef PNG_tRNS_SUPPORTED
   /* Free any tRNS entry */
-#ifdef PNG_FREE_ME_SUPPORTED
   if ((mask & PNG_FREE_TRNS) & info_ptr->free_me)
-#else
-   if ((mask & PNG_FREE_TRNS) && (png_ptr->flags & PNG_FLAG_FREE_TRNS))
-#endif
   {
-      png_free(png_ptr, info_ptr->trans);
-      info_ptr->trans = NULL;
+      png_free(png_ptr, info_ptr->trans_alpha);
+      info_ptr->trans_alpha = NULL;
      info_ptr->valid &= ~PNG_INFO_tRNS;
-#ifndef PNG_FREE_ME_SUPPORTED
-      png_ptr->flags &= ~PNG_FLAG_FREE_TRNS;
-#endif
   }
 #endif

-#if defined(PNG_sCAL_SUPPORTED)
+#ifdef PNG_sCAL_SUPPORTED
   /* Free any sCAL entry */
-#ifdef PNG_FREE_ME_SUPPORTED
   if ((mask & PNG_FREE_SCAL) & info_ptr->free_me)
-#else
-   if (mask & PNG_FREE_SCAL)
-#endif
   {
 #if defined(PNG_FIXED_POINT_SUPPORTED) && !defined(PNG_FLOATING_POINT_SUPPORTED)
      png_free(png_ptr, info_ptr->scal_s_width);
@@ -371,13 +300,9 @@ png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
   }
 #endif

-#if defined(PNG_pCAL_SUPPORTED)
+#ifdef PNG_pCAL_SUPPORTED
   /* Free any pCAL entry */
-#ifdef PNG_FREE_ME_SUPPORTED
   if ((mask & PNG_FREE_PCAL) & info_ptr->free_me)
-#else
-   if (mask & PNG_FREE_PCAL)
-#endif
   {
      png_free(png_ptr, info_ptr->pcal_purpose);
      png_free(png_ptr, info_ptr->pcal_units);
@@ -398,13 +323,9 @@ png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
   }
 #endif

-#if defined(PNG_iCCP_SUPPORTED)
+#ifdef PNG_iCCP_SUPPORTED
   /* Free any iCCP entry */
-#ifdef PNG_FREE_ME_SUPPORTED
   if ((mask & PNG_FREE_ICCP) & info_ptr->free_me)
-#else
-   if (mask & PNG_FREE_ICCP)
-#endif
   {
      png_free(png_ptr, info_ptr->iccp_name);
      png_free(png_ptr, info_ptr->iccp_profile);
@@ -414,13 +335,9 @@ png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
   }
 #endif

-#if defined(PNG_sPLT_SUPPORTED)
+#ifdef PNG_sPLT_SUPPORTED
   /* Free a given sPLT entry, or (if num == -1) all sPLT entries */
-#ifdef PNG_FREE_ME_SUPPORTED
   if ((mask & PNG_FREE_SPLT) & info_ptr->free_me)
-#else
-   if (mask & PNG_FREE_SPLT)
-#endif
   {
      if (num != -1)
      {
@@ -449,18 +366,14 @@ png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
   }
 #endif

-#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
   if (png_ptr->unknown_chunk.data)
   {
      png_free(png_ptr, png_ptr->unknown_chunk.data);
      png_ptr->unknown_chunk.data = NULL;
   }

-#ifdef PNG_FREE_ME_SUPPORTED
   if ((mask & PNG_FREE_UNKN) & info_ptr->free_me)
-#else
-   if (mask & PNG_FREE_UNKN)
-#endif
   {
      if (num != -1)
      {
@@ -487,46 +400,28 @@ png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
   }
 #endif

-#if defined(PNG_hIST_SUPPORTED)
+#ifdef PNG_hIST_SUPPORTED
   /* Free any hIST entry */
-#ifdef PNG_FREE_ME_SUPPORTED
   if ((mask & PNG_FREE_HIST)  & info_ptr->free_me)
-#else
-   if ((mask & PNG_FREE_HIST) && (png_ptr->flags & PNG_FLAG_FREE_HIST))
-#endif
   {
      png_free(png_ptr, info_ptr->hist);
      info_ptr->hist = NULL;
      info_ptr->valid &= ~PNG_INFO_hIST;
-#ifndef PNG_FREE_ME_SUPPORTED
-      png_ptr->flags &= ~PNG_FLAG_FREE_HIST;
-#endif
   }
 #endif

   /* Free any PLTE entry that was internally allocated */
-#ifdef PNG_FREE_ME_SUPPORTED
   if ((mask & PNG_FREE_PLTE) & info_ptr->free_me)
-#else
-   if ((mask & PNG_FREE_PLTE) && (png_ptr->flags & PNG_FLAG_FREE_PLTE))
-#endif
   {
      png_zfree(png_ptr, info_ptr->palette);
      info_ptr->palette = NULL;
      info_ptr->valid &= ~PNG_INFO_PLTE;
-#ifndef PNG_FREE_ME_SUPPORTED
-      png_ptr->flags &= ~PNG_FLAG_FREE_PLTE;
-#endif
      info_ptr->num_palette = 0;
   }

-#if defined(PNG_INFO_IMAGE_SUPPORTED)
+#ifdef PNG_INFO_IMAGE_SUPPORTED
   /* Free any image bits attached to the info structure */
-#ifdef PNG_FREE_ME_SUPPORTED
   if ((mask & PNG_FREE_ROWS) & info_ptr->free_me)
-#else
-   if (mask & PNG_FREE_ROWS)
-#endif
   {
      if (info_ptr->row_pointers)
      {
@@ -541,12 +436,10 @@ png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
   }
 #endif

-#ifdef PNG_FREE_ME_SUPPORTED
   if (num == -1)
      info_ptr->free_me &= ~mask;
   else
      info_ptr->free_me &= ~(mask & ~PNG_FREE_MUL);
-#endif
 }

 /* This is an internal routine to free any memory that the info struct is
@@ -560,7 +453,7 @@ png_info_destroy(png_structp png_ptr, png_infop info_ptr)

   png_free_data(png_ptr, info_ptr, PNG_FREE_ALL, -1);

-#if defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
   if (png_ptr->num_chunk_list)
   {
      png_free(png_ptr, png_ptr->chunk_list);
@@ -585,7 +478,7 @@ png_get_io_ptr(png_structp png_ptr)
 }

 #if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
-#if !defined(PNG_NO_STDIO)
+#ifdef PNG_STDIO_SUPPORTED
 /* Initialize the default input/output functions for the PNG file.  If you
 * use your own read or write routines, you can call either png_set_read_fn()
 * or png_set_write_fn() instead of png_init_io().  If you have defined
@@ -596,13 +489,15 @@ void PNGAPI
 png_init_io(png_structp png_ptr, png_FILE_p fp)
 {
   png_debug(1, "in png_init_io");
+
   if (png_ptr == NULL)
      return;
+
   png_ptr->io_ptr = (png_voidp)fp;
 }
 #endif

-#if defined(PNG_TIME_RFC1123_SUPPORTED)
+#ifdef PNG_TIME_RFC1123_SUPPORTED
 /* Convert the supplied time into an RFC 1123 string suitable for use in
 * a "Creation Time" or other text-based time string.
 */
@@ -652,13 +547,13 @@ png_get_copyright(png_structp png_ptr)
 #else
 #ifdef __STDC__
   return ((png_charp) PNG_STRING_NEWLINE \
-     "libpng version x 1.4.0beta66 - June 27, 2009" PNG_STRING_NEWLINE \
+     "libpng version 1.4.0beta104 - November 22, 2009" PNG_STRING_NEWLINE \
     "Copyright (c) 1998-2009 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
     "Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
     "Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
     PNG_STRING_NEWLINE);
 #else
-      return ((png_charp) "libpng version 1.4.0beta66 - June 27, 2009\
+      return ((png_charp) "libpng version 1.4.0beta104 - November 22, 2009\
      Copyright (c) 1998-2009 Glenn Randers-Pehrson\
      Copyright (c) 1996-1997 Andreas Dilger\
      Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.");
@@ -758,8 +653,8 @@ png_convert_size(size_t size)
 #endif /* PNG_SIZE_T */

 /* Added at libpng version 1.2.34 and 1.4.0 (moved from pngset.c) */
-#if defined(PNG_cHRM_SUPPORTED)
-#if !defined(PNG_NO_CHECK_cHRM)
+#ifdef PNG_cHRM_SUPPORTED
+#ifdef PNG_CHECK_cHRM_SUPPORTED

 /*
 *    Multiply two 32-bit numbers, V1 and V2, using 32-bit
@@ -776,7 +671,8 @@ png_convert_size(size_t size)
 *    A and D, and X || Y is (X << 16) + Y.
 */

-void png_64bit_product (long v1, long v2, unsigned long *hi_product,
+void /* PRIVATE */
+png_64bit_product (long v1, long v2, unsigned long *hi_product,
   unsigned long *lo_product)
 {
   int a, b, c, d;
@@ -800,7 +696,7 @@ void png_64bit_product (long v1, long v2, unsigned long *hi_product,
   *lo_product = (unsigned long)lo;
 }

-int /* private */
+int /* PRIVATE */
 png_check_cHRM_fixed(png_structp png_ptr,
   png_fixed_point white_x, png_fixed_point white_y, png_fixed_point red_x,
   png_fixed_point red_y, png_fixed_point green_x, png_fixed_point green_y,
@@ -810,6 +706,7 @@ png_check_cHRM_fixed(png_structp png_ptr,
   unsigned long xy_hi,xy_lo,yx_hi,yx_lo;

   png_debug(1, "in function png_check_cHRM_fixed");
+
   if (png_ptr == NULL)
      return 0;

@@ -868,6 +765,148 @@ png_check_cHRM_fixed(png_structp png_ptr,

   return ret;
 }
-#endif /* NO_PNG_CHECK_cHRM */
+#endif /* PNG_CHECK_cHRM_SUPPORTED */
 #endif /* PNG_cHRM_SUPPORTED */
+
+void /* PRIVATE */
+png_check_IHDR(png_structp png_ptr,
+   png_uint_32 width, png_uint_32 height, int bit_depth,
+   int color_type, int interlace_type, int compression_type,
+   int filter_type)
+{
+   int error = 0;
+
+   /* Check for width and height valid values */
+   if (width == 0)
+   {
+      png_warning(png_ptr, "Image width is zero in IHDR");
+      error = 1;
+   }
+
+   if (height == 0)
+   {
+      png_warning(png_ptr, "Image height is zero in IHDR");
+      error = 1;
+   }
+
+#ifdef PNG_SET_USER_LIMITS_SUPPORTED
+   if (width > png_ptr->user_width_max || width > PNG_USER_WIDTH_MAX)
+#else
+   if (width > PNG_USER_WIDTH_MAX)
+#endif
+   {
+      png_warning(png_ptr, "Image width exceeds user limit in IHDR");
+      error = 1;
+   }
+
+#ifdef PNG_SET_USER_LIMITS_SUPPORTED
+   if (height > png_ptr->user_height_max || height > PNG_USER_HEIGHT_MAX)
+#else
+   if (height > PNG_USER_HEIGHT_MAX)
+#endif
+   {
+      png_warning(png_ptr, "Image height exceeds user limit in IHDR");
+      error = 1;
+   }
+
+   if (width > PNG_UINT_31_MAX)
+   {
+      png_warning(png_ptr, "Invalid image width in IHDR");
+      error = 1;
+   }
+
+   if ( height > PNG_UINT_31_MAX)
+   {
+      png_warning(png_ptr, "Invalid image height in IHDR");
+      error = 1;
+   }
+
+   if ( width > (PNG_UINT_32_MAX
+                 >> 3)      /* 8-byte RGBA pixels */
+                 - 64       /* bigrowbuf hack */
+                 - 1        /* filter byte */
+                 - 7*8      /* rounding of width to multiple of 8 pixels */
+                 - 8)       /* extra max_pixel_depth pad */
+      png_warning(png_ptr, "Width is too large for libpng to process pixels");
+
+   /* Check other values */
+   if (bit_depth != 1 && bit_depth != 2 && bit_depth != 4 &&
+       bit_depth != 8 && bit_depth != 16)
+   {
+      png_warning(png_ptr, "Invalid bit depth in IHDR");
+      error = 1;
+   }
+
+   if (color_type < 0 || color_type == 1 ||
+       color_type == 5 || color_type > 6)
+   {
+      png_warning(png_ptr, "Invalid color type in IHDR");
+      error = 1;
+   }
+
+   if (((color_type == PNG_COLOR_TYPE_PALETTE) && bit_depth > 8) ||
+       ((color_type == PNG_COLOR_TYPE_RGB ||
+         color_type == PNG_COLOR_TYPE_GRAY_ALPHA ||
+         color_type == PNG_COLOR_TYPE_RGB_ALPHA) && bit_depth < 8))
+   {
+      png_warning(png_ptr, "Invalid color type/bit depth combination in IHDR");
+      error = 1;
+   }
+
+   if (interlace_type >= PNG_INTERLACE_LAST)
+   {
+      png_warning(png_ptr, "Unknown interlace method in IHDR");
+      error = 1;
+   }
+
+   if (compression_type != PNG_COMPRESSION_TYPE_BASE)
+   {
+      png_warning(png_ptr, "Unknown compression method in IHDR");
+      error = 1;
+   }
+
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+   /* Accept filter_method 64 (intrapixel differencing) only if
+    * 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and
+    * 2. Libpng did not read a PNG signature (this filter_method is only
+    *    used in PNG datastreams that are embedded in MNG datastreams) and
+    * 3. The application called png_permit_mng_features with a mask that
+    *    included PNG_FLAG_MNG_FILTER_64 and
+    * 4. The filter_method is 64 and
+    * 5. The color_type is RGB or RGBA
+    */
+   if ((png_ptr->mode & PNG_HAVE_PNG_SIGNATURE) &&
+       png_ptr->mng_features_permitted)
+      png_warning(png_ptr, "MNG features are not allowed in a PNG datastream");
+
+   if (filter_type != PNG_FILTER_TYPE_BASE)
+   {
+      if (!((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
+         (filter_type == PNG_INTRAPIXEL_DIFFERENCING) &&
+         ((png_ptr->mode & PNG_HAVE_PNG_SIGNATURE) == 0) &&
+         (color_type == PNG_COLOR_TYPE_RGB ||
+         color_type == PNG_COLOR_TYPE_RGB_ALPHA)))
+      {
+         png_warning(png_ptr, "Unknown filter method in IHDR");
+         error = 1;
+      }
+
+      if (png_ptr->mode & PNG_HAVE_PNG_SIGNATURE)
+      {
+         png_warning(png_ptr, "Invalid filter method in IHDR");
+         error = 1;
+      }
+   }
+
+#else
+   if (filter_type != PNG_FILTER_TYPE_BASE)
+   {
+      png_warning(png_ptr, "Unknown filter method in IHDR");
+      error = 1;
+   }
+#endif
+
+   if (error == 1)
+      png_error(png_ptr, "Invalid IHDR data");
+}
 #endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */
--- a/png.h
+++ b/png.h
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,7 +1,7 @@

 /* pngconf.h - machine configurable file for libpng
 *
- * libpng version 1.4.0beta66 - June 27, 2009
+ * libpng version 1.4.0beta104 - November 22, 2009
 * For conditions of distribution and use, see copyright notice in png.h
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -23,16 +23,16 @@
 #define PNGCONF_H

 #ifndef PNG_NO_LIMITS_H
-#include <limits.h>
+#  include <limits.h>
 #endif

 /* Added at libpng-1.2.9 */

 /* config.h is created by and PNG_CONFIGURE_LIBPNG is set by the "configure" script. */
 #ifdef PNG_CONFIGURE_LIBPNG
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
+#  ifdef HAVE_CONFIG_H
+#    include "config.h"
+#  endif
 #endif

 /*
@@ -45,12 +45,7 @@
 #  ifndef PNG_USER_PRIVATEBUILD
 #    define PNG_USER_PRIVATEBUILD
 #  endif
-#include "pngusr.h"
-#endif
-
-/* Added at libpng-1.4.0beta49 for testing */
-#ifndef PNG_NO_CALLOC
-#  define PNG_CALLOC_SUPPORTED
+#  include "pngusr.h"
 #endif

 /*
@@ -73,22 +68,22 @@
 */

 #ifdef __STDC__
-#ifdef SPECIALBUILD
-#  pragma message("PNG_LIBPNG_SPECIALBUILD (and deprecated SPECIALBUILD)\
- are now LIBPNG reserved macros. Use PNG_USER_PRIVATEBUILD instead.")
-#endif
+#  ifdef SPECIALBUILD
+#    pragma message("PNG_LIBPNG_SPECIALBUILD (and deprecated SPECIALBUILD)\
+     are now LIBPNG reserved macros. Use PNG_USER_PRIVATEBUILD instead.")
+#  endif

-#ifdef PRIVATEBUILD
-# pragma message("PRIVATEBUILD is deprecated.\
- Use PNG_USER_PRIVATEBUILD instead.")
-# define PNG_USER_PRIVATEBUILD PRIVATEBUILD
-#endif
+#  ifdef PRIVATEBUILD
+#    pragma message("PRIVATEBUILD is deprecated.\
+     Use PNG_USER_PRIVATEBUILD instead.")
+#    define PNG_USER_PRIVATEBUILD PRIVATEBUILD
+#  endif
 #endif /* __STDC__ */

-#ifndef PNG_VERSION_INFO_ONLY
-
 /* End of material added to libpng-1.2.8 */

+#ifndef PNG_VERSION_INFO_ONLY
+
 /* This is the size of the compression buffer, and thus the size of
 * an IDAT chunk.  Make this whatever size you feel is best for your
 * machine.  One of these will be allocated per png_struct.  When this
@@ -129,20 +124,46 @@
 #  endif
 #endif

+/* Added at libpng version 1.4.0 */
+#if !defined(PNG_NO_WARNINGS) && !defined(PNG_WARNINGS_SUPPORTED)
+#  define PNG_WARNINGS_SUPPORTED
+#endif
+
+/* Added at libpng version 1.4.0 */
+#if !defined(PNG_NO_ERROR_TEXT) && !defined(PNG_ERROR_TEXT_SUPPORTED)
+#  define PNG_ERROR_TEXT_SUPPORTED
+#endif
+
+/* Added at libpng version 1.4.0 */
+#if !defined(PNG_NO_CHECK_cHRM) && !defined(PNG_CHECK_cHRM_SUPPORTED)
+#  define PNG_CHECK_cHRM_SUPPORTED
+#endif
+
+/* Added at libpng version 1.4.0 */
+#if !defined(PNG_NO_ALIGNED_MEMORY) && !defined(PNG_ALIGNED_MEMORY_SUPPORTED)
+#  define PNG_ALIGNED_MEMORY_SUPPORTED
+#endif
+
 /* Enabled by default in 1.2.0.  You can disable this if you don't need to
   support PNGs that are embedded in MNG datastreams */
-#if !defined(PNG_NO_MNG_FEATURES)
+#ifndef PNG_NO_MNG_FEATURES
 #  ifndef PNG_MNG_FEATURES_SUPPORTED
 #    define PNG_MNG_FEATURES_SUPPORTED
 #  endif
 #endif

+/* Added at libpng version 1.4.0 */
 #ifndef PNG_NO_FLOATING_POINT_SUPPORTED
 #  ifndef PNG_FLOATING_POINT_SUPPORTED
 #    define PNG_FLOATING_POINT_SUPPORTED
 #  endif
 #endif

+/* Added at libpng-1.4.0beta49 for testing (this test is no longer used
+   in libpng and png_calloc() is always present)
+ */
+#define PNG_CALLOC_SUPPORTED
+
 /* If you are running on a machine where you cannot allocate more
 * than 64K of memory at once, uncomment this.  While libpng will not
 * normally need that much memory in a chunk (unless you load up a very
@@ -186,46 +207,46 @@
 *   we don't need to worry about PNG_STATIC or ALL_STATIC when it comes
 *   to __declspec() stuff.  However, we DO need to worry about
 *   PNG_BUILD_DLL and PNG_STATIC because those change some defaults
- *   such as CONSOLE_IO and whether GLOBAL_ARRAYS are allowed.
+ *   such as CONSOLE_IO.
 */
-#if defined(__CYGWIN__)
-#  if defined(ALL_STATIC)
-#    if defined(PNG_BUILD_DLL)
+#ifdef __CYGWIN__
+#  ifdef ALL_STATIC
+#    ifdef PNG_BUILD_DLL
 #      undef PNG_BUILD_DLL
 #    endif
-#    if defined(PNG_USE_DLL)
+#    ifdef PNG_USE_DLL
 #      undef PNG_USE_DLL
 #    endif
-#    if defined(PNG_DLL)
+#    ifdef PNG_DLL
 #      undef PNG_DLL
 #    endif
-#    if !defined(PNG_STATIC)
+#    ifndef PNG_STATIC
 #      define PNG_STATIC
 #    endif
 #  else
-#    if defined (PNG_BUILD_DLL)
-#      if defined(PNG_STATIC)
+#    ifdef PNG_BUILD_DLL
+#      ifdef PNG_STATIC
 #        undef PNG_STATIC
 #      endif
-#      if defined(PNG_USE_DLL)
+#      ifdef PNG_USE_DLL
 #        undef PNG_USE_DLL
 #      endif
-#      if !defined(PNG_DLL)
+#      ifndef PNG_DLL
 #        define PNG_DLL
 #      endif
 #    else
-#      if defined(PNG_STATIC)
-#        if defined(PNG_USE_DLL)
+#      ifdef PNG_STATIC
+#        ifdef PNG_USE_DLL
 #          undef PNG_USE_DLL
 #        endif
-#        if defined(PNG_DLL)
+#        ifdef PNG_DLL
 #          undef PNG_DLL
 #        endif
 #      else
-#        if !defined(PNG_USE_DLL)
+#        ifndef PNG_USE_DLL
 #          define PNG_USE_DLL
 #        endif
-#        if !defined(PNG_DLL)
+#        ifndef PNG_DLL
 #          define PNG_DLL
 #        endif
 #      endif
@@ -246,20 +267,14 @@
 * #define PNG_NO_STDIO
 */

-#if defined(_WIN32_WCE)
-#  include <windows.h>
-   /* Console I/O functions are not supported on WindowsCE */
-#  define PNG_NO_CONSOLE_IO
-#  ifdef PNG_DEBUG
-#    undef PNG_DEBUG
-#  endif
+#if !defined(PNG_NO_STDIO) && !defined(PNG_STDIO_SUPPORTED)
+#  define PNG_STDIO_SUPPORTED
 #endif

+
 #ifdef PNG_BUILD_DLL
-#  ifndef PNG_CONSOLE_IO_SUPPORTED
-#    ifndef PNG_NO_CONSOLE_IO
-#      define PNG_NO_CONSOLE_IO
-#    endif
+#  if !defined(PNG_CONSOLE_IO_SUPPORTED) && !defined(PNG_NO_CONSOLE_IO)
+#    define PNG_NO_CONSOLE_IO
 #  endif
 #endif

@@ -276,6 +291,10 @@
 #    include <stdio.h>
 #  endif

+#if !(defined PNG_NO_CONSOLE_IO) && !defined(PNG_CONSOLE_IO_SUPPORTED)
+#  define PNG_CONSOLE_IO_SUPPORTED
+#endif
+
 /* This macro protects us against machines that don't have function
 * prototypes (ie K&R style headers).  If your compiler does not handle
 * function prototypes, define this macro and use the included ansi2knr.
@@ -310,12 +329,14 @@
 #  endif
 #endif

-/* enough people need this for various reasons to include it here */
-#if !defined(MACOS) && !defined(RISCOS) && !defined(_WIN32_WCE)
+/* Enough people need this for various reasons to include it here */
+#if !defined(MACOS) && !defined(RISCOS)
 #  include <sys/types.h>
 #endif

-#if !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED)
+/* PNG_SETJMP_NOT_SUPPORTED and PNG_NO_SETJMP_SUPPORTED are deprecated. */
+#if !defined(PNG_NO_SETJMP) && \
+    !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED)
 #  define PNG_SETJMP_SUPPORTED
 #endif

@@ -346,7 +367,7 @@
 #    endif /* __linux__ */
 #  endif /* PNG_SKIP_SETJMP_CHECK */

-   /* include setjmp.h for error handling */
+   /* Include setjmp.h for error handling */
 #  include <setjmp.h>

 #  ifdef __linux__
@@ -405,10 +426,12 @@
 * If you do not want to use const, define PNG_NO_CONST here.
 */

-#ifndef PNG_NO_CONST
-#  define PNG_CONST const
-#else
-#  define PNG_CONST
+#ifndef PNG_CONST
+#  ifndef PNG_NO_CONST
+#    define PNG_CONST const
+#  else
+#    define PNG_CONST
+#  endif
 #endif

 /* The following defines give you the ability to remove code from the
@@ -428,43 +451,25 @@
 /* Any features you will not be using can be undef'ed here */

 /* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user
- * to turn it off with "*TRANSFORMS_NOT_SUPPORTED" or *PNG_NO_*_TRANSFORMS
- * on the compile line, then pick and choose which ones to define without
- * having to edit this file. It is safe to use the *TRANSFORMS_NOT_SUPPORTED
+ * to turn it off with PNG_NO_READ|WRITE_TRANSFORMS on the compile line,
+ * then pick and choose which ones to define without having to edit this
+ * file. It is safe to use the PNG_NO_READ|WRITE_TRANSFORMS
 * if you only want to have a png-compliant reader/writer but don't need
 * any of the extra transformations.  This saves about 80 kbytes in a
 * typical installation of the library. (PNG_NO_* form added in version
- * 1.0.1c, for consistency)
+ * 1.0.1c, for consistency; PNG_*_TRANSFORMS_NOT_SUPPORTED deprecated in
+ * 1.4.0)
 */

-/* The size of the png_text structure changed in libpng-1.0.6 when
- * iTXt support was added.  iTXt support was turned off by default through
- * libpng-1.2.x, to support old apps that malloc the png_text structure
- * instead of calling png_set_text() and letting libpng malloc it.  It
- * was turned on by default in libpng-1.4.0.
- */
-
-#if !defined(PNG_NO_iTXt_SUPPORTED)
-#  if !defined(PNG_READ_iTXt_SUPPORTED) && !defined(PNG_NO_READ_iTXt)
-#    define PNG_READ_iTXt
-#  endif
-#  if !defined(PNG_WRITE_iTXt_SUPPORTED) && !defined(PNG_NO_WRITE_iTXt)
-#    define PNG_WRITE_iTXt
-#  endif
-#endif
-
 /* Ignore attempt to turn off both floating and fixed point support */
 #if !defined(PNG_FLOATING_POINT_SUPPORTED) || \
    !defined(PNG_NO_FIXED_POINT_SUPPORTED)
 #  define PNG_FIXED_POINT_SUPPORTED
 #endif

-#ifndef PNG_NO_FREE_ME
-#  define PNG_FREE_ME_SUPPORTED
-#endif
-
 #ifdef PNG_READ_SUPPORTED

+/* PNG_READ_TRANSFORMS_NOT_SUPPORTED is deprecated. */
 #if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
      !defined(PNG_NO_READ_TRANSFORMS)
 #  define PNG_READ_TRANSFORMS_SUPPORTED
@@ -532,14 +537,22 @@
 #  endif
 #endif /* PNG_READ_TRANSFORMS_SUPPORTED */

+/* PNG_PROGRESSIVE_READ_NOT_SUPPORTED is deprecated. */
 #if !defined(PNG_NO_PROGRESSIVE_READ) && \
 !defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED)  /* if you don't do progressive */
 #  define PNG_PROGRESSIVE_READ_SUPPORTED     /* reading.  This is not talking */
 #endif                               /* about interlacing capability!  You'll */
-              /* still have interlacing unless you change the following line: */
+            /* still have interlacing unless you change the following define: */

 #define PNG_READ_INTERLACING_SUPPORTED /* required for PNG-compliant decoders */

+/* PNG_NO_SEQUENTIAL_READ_SUPPORTED is deprecated. */
+#if !defined(PNG_NO_SEQUENTIAL_READ) && \
+    !defined(PNG_SEQUENTIAL_READ_SUPPORTED) && \
+    !defined(PNG_NO_SEQUENTIAL_READ_SUPPORTED)
+#  define PNG_SEQUENTIAL_READ_SUPPORTED
+#endif
+
 #ifndef PNG_NO_READ_COMPOSITE_NODIV
 #  ifndef PNG_NO_READ_COMPOSITED_NODIV  /* libpng-1.0.x misspelling */
 #    define PNG_READ_COMPOSITE_NODIV_SUPPORTED   /* well tested on Intel, SGI */
@@ -557,7 +570,8 @@

 #ifdef PNG_WRITE_SUPPORTED

-# if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
+/* PNG_WRITE_TRANSFORMS_NOT_SUPPORTED is deprecated. */
+#if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
    !defined(PNG_NO_WRITE_TRANSFORMS)
 #  define PNG_WRITE_TRANSFORMS_SUPPORTED
 #endif
@@ -597,9 +611,10 @@

 #if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \
    !defined(PNG_WRITE_INTERLACING_SUPPORTED)
-#define PNG_WRITE_INTERLACING_SUPPORTED  /* not required for PNG-compliant
-                                            encoders, but can cause trouble
-                                            if left undefined */
+    /* This is not required for PNG-compliant encoders, but can cause
+     * trouble if left undefined
+    */
+#  define PNG_WRITE_INTERLACING_SUPPORTED
 #endif

 #if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \
@@ -630,7 +645,7 @@
 #  endif
 #endif

-#ifndef PNG_NO_STDIO
+#if defined(PNG_STDIO_SUPPORTED) && !defined(PNG_TIME_RFC1123_SUPPORTED)
 #  define PNG_TIME_RFC1123_SUPPORTED
 #endif

@@ -654,15 +669,16 @@
 #  define PNG_EASY_ACCESS_SUPPORTED
 #endif

+/* Added at libpng-1.2.0 */
 #if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
 #  define PNG_USER_MEM_SUPPORTED
 #endif

 /* Added at libpng-1.2.6 */
 #ifndef PNG_SET_USER_LIMITS_SUPPORTED
-#if !defined(PNG_NO_SET_USER_LIMITS) && !defined(PNG_SET_USER_LIMITS_SUPPORTED)
-#  define PNG_SET_USER_LIMITS_SUPPORTED
-#endif
+#  ifndef PNG_NO_SET_USER_LIMITS
+#    define PNG_SET_USER_LIMITS_SUPPORTED
+#  endif
 #endif

 /* Added at libpng-1.0.16 and 1.2.6.  To accept all valid PNGs no matter
@@ -677,7 +693,7 @@

 /* Added at libpng-1.4.0 */
 #ifndef PNG_USER_CHUNK_CACHE_MAX
-#  define PNG_USER_CHUNK_CACHE_MAX 0x7ffffffLL
+#  define PNG_USER_CHUNK_CACHE_MAX 0x7fffffffL
 #endif

 /* Added at libpng-1.4.0 */
@@ -700,7 +716,7 @@

 /* These are currently experimental features, define them if you want */

-/* very little testing */
+/* Very little testing */
 /*
 #ifdef PNG_READ_SUPPORTED
 #  ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
@@ -721,10 +737,12 @@
 #  define PNG_USE_READ_MACROS
 #endif

-/* Buggy compilers (e.g., gcc 2.7.2.2) need this */
-/*
-#define PNG_NO_POINTER_INDEXING
-*/
+/* Buggy compilers (e.g., gcc 2.7.2.2) need PNG_NO_POINTER_INDEXING */
+
+#if !defined(PNG_NO_POINTER_INDEXING) && \
+    !defined(PNG_POINTER_INDEXING_SUPPORTED)
+#  define PNG_POINTER_INDEXING_SUPPORTED
+#endif


 /* Any chunks you are not interested in, you can undef here.  The
@@ -733,12 +751,21 @@
 * a bit smaller.
 */

+/* The size of the png_text structure changed in libpng-1.0.6 when
+ * iTXt support was added.  iTXt support was turned off by default through
+ * libpng-1.2.x, to support old apps that malloc the png_text structure
+ * instead of calling png_set_text() and letting libpng malloc it.  It
+ * was turned on by default in libpng-1.4.0.
+ */
+
+/* PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED is deprecated. */
 #if defined(PNG_READ_SUPPORTED) && \
    !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
    !defined(PNG_NO_READ_ANCILLARY_CHUNKS)
 #  define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
 #endif

+/* PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED is deprecated. */
 #if defined(PNG_WRITE_SUPPORTED) && \
    !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
    !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS)
@@ -752,6 +779,7 @@
 #  define PNG_NO_READ_tEXt
 #  define PNG_NO_READ_zTXt
 #endif
+
 #ifndef PNG_NO_READ_bKGD
 #  define PNG_READ_bKGD_SUPPORTED
 #  define PNG_bKGD_SUPPORTED
@@ -978,8 +1006,23 @@
 #  endif
 #endif

+#ifdef PNG_WRITE_tIME_SUPPORTED
+#  ifndef PNG_NO_CONVERT_tIME
+#    ifndef _WIN32_WCE
+/*   The "tm" structure is not supported on WindowsCE */
+#      ifndef PNG_CONVERT_tIME_SUPPORTED
+#        define PNG_CONVERT_tIME_SUPPORTED
+#      endif
+#   endif
+#  endif
+#endif
+
 #endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */

+#if !defined(PNG_NO_WRITE_FILTER) && !defined(PNG_WRITE_FILTER_SUPPORTED)
+#  define PNG_WRITE_FILTER_SUPPORTED
+#endif
+
 #ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS
 #  define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
 #  ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
@@ -1001,12 +1044,10 @@
 #  define PNG_INFO_IMAGE_SUPPORTED
 #endif

-/* need the time information for reading tIME chunks */
-#if defined(PNG_tIME_SUPPORTED)
-#  if !defined(_WIN32_WCE)
+/* Need the time information for converting tIME chunks */
+#ifdef PNG_CONVERT_tIME_SUPPORTED
     /* "time.h" functions are not supported on WindowsCE */
 #    include <time.h>
-#  endif
 #endif

 /* Some typedefs to get us started.  These should be safe on most of the
@@ -1045,7 +1086,8 @@ typedef unsigned char png_byte;
 */

 /* Separate compiler dependencies (problem here is that zlib.h always
-   defines FAR. (SJT) */
+ * defines FAR. (SJT)
+ */
 #ifdef __BORLANDC__
 #  if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__)
 #    define LDATA 1
@@ -1076,8 +1118,8 @@ typedef unsigned char png_byte;
 */

 /* MSC Medium model */
-#if defined(FAR)
-#  if defined(M_I86MM)
+#ifdef FAR
+#  ifdef M_I86MM
 #    define USE_FAR_KEYWORD
 #    define FARDATA FAR
 #    include <dos.h>
@@ -1110,12 +1152,8 @@ typedef char            FAR * png_charp;
 typedef png_fixed_point FAR * png_fixed_point_p;

 #ifndef PNG_NO_STDIO
-#if defined(_WIN32_WCE)
-typedef HANDLE                png_FILE_p;
-#else
 typedef FILE                * png_FILE_p;
 #endif
-#endif

 #ifdef PNG_FLOATING_POINT_SUPPORTED
 typedef double          FAR * png_doublep;
@@ -1137,8 +1175,7 @@ typedef double          FAR * FAR * png_doublepp;
 /* Pointers to pointers to pointers; i.e., pointer to array */
 typedef char            FAR * FAR * FAR * png_charppp;

-/*
- * Define PNG_BUILD_DLL if the module being built is a Windows
+/* Define PNG_BUILD_DLL if the module being built is a Windows
 * LIBPNG DLL.
 *
 * Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL.
@@ -1158,49 +1195,16 @@ typedef char            FAR * FAR * FAR * png_charppp;
 #if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL))
 #  define PNG_DLL
 #endif
-/* If CYGWIN, then disallow GLOBAL ARRAYS unless building a static lib.
- * When building a static lib, default to no GLOBAL ARRAYS, but allow
- * command-line override
- */
-#if defined(__CYGWIN__)
-#  if !defined(PNG_STATIC)
-#    if defined(PNG_USE_GLOBAL_ARRAYS)
-#      undef PNG_USE_GLOBAL_ARRAYS
-#    endif
-#    if !defined(PNG_USE_LOCAL_ARRAYS)
-#      define PNG_USE_LOCAL_ARRAYS
-#    endif
-#  else
-#    if defined(PNG_USE_LOCAL_ARRAYS) || defined(PNG_NO_GLOBAL_ARRAYS)
-#      if defined(PNG_USE_GLOBAL_ARRAYS)
-#        undef PNG_USE_GLOBAL_ARRAYS
-#      endif
-#    endif
-#  endif
-#  if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
-#    define PNG_USE_LOCAL_ARRAYS
-#  endif
-#endif

-/* Do not use global arrays (helps with building DLL's)
- * They are no longer used in libpng itself, since version 1.0.5c,
- * but might be required for some pre-1.0.5c applications.
- */
-#if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
-#  if defined(PNG_NO_GLOBAL_ARRAYS) || (defined(__GNUC__) && defined(PNG_DLL))
-#    define PNG_USE_LOCAL_ARRAYS
-#  else
-#    define PNG_USE_GLOBAL_ARRAYS
-#  endif
-#endif
-
-#if defined(__CYGWIN__)
+#ifdef __CYGWIN__
 #  undef PNGAPI
 #  define PNGAPI __cdecl
 #  undef PNG_IMPEXP
 #  define PNG_IMPEXP
 #endif

+#define PNG_USE_LOCAL_ARRAYS /* Not used in libpng, defined for legacy apps */
+
 /* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall",
 * you may get warnings regarding the linkage of png_zalloc and png_zfree.
 * Don't ignore those warnings; you must also reset the default calling
@@ -1235,43 +1239,42 @@ typedef char            FAR * FAR * FAR * png_charppp;
 #     define PNG_IMPEXP
 #  endif

-#  if !defined(PNG_IMPEXP)
+#  ifndef PNG_IMPEXP

-#     define PNG_EXPORT_TYPE1(type,symbol)  PNG_IMPEXP type PNGAPI symbol
-#     define PNG_EXPORT_TYPE2(type,symbol)  type PNG_IMPEXP PNGAPI symbol
+#    define PNG_EXPORT_TYPE1(type,symbol)  PNG_IMPEXP type PNGAPI symbol
+#    define PNG_EXPORT_TYPE2(type,symbol)  type PNG_IMPEXP PNGAPI symbol

-      /* Borland/Microsoft */
-#     if defined(_MSC_VER) || defined(__BORLANDC__)
-#        if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500)
-#           define PNG_EXPORT PNG_EXPORT_TYPE1
-#        else
-#           define PNG_EXPORT PNG_EXPORT_TYPE2
-#           if defined(PNG_BUILD_DLL)
-#              define PNG_IMPEXP __export
-#           else
-#              define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in
-                                                 VC++ */
-#           endif                             /* Exists in Borland C++ for
-                                                 C++ classes (== huge) */
-#        endif
-#     endif
+     /* Borland/Microsoft */
+#    if defined(_MSC_VER) || defined(__BORLANDC__)
+#      if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500)
+#         define PNG_EXPORT PNG_EXPORT_TYPE1
+#      else
+#         define PNG_EXPORT PNG_EXPORT_TYPE2
+#         ifdef PNG_BUILD_DLL
+#            define PNG_IMPEXP __export
+#         else
+#            define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in VC++ */
+#         endif                              /* Exists in Borland C++ for
+                                                C++ classes (== huge) */
+#      endif
+#    endif

-#     if !defined(PNG_IMPEXP)
-#        if defined(PNG_BUILD_DLL)
-#           define PNG_IMPEXP __declspec(dllexport)
-#        else
-#           define PNG_IMPEXP __declspec(dllimport)
-#        endif
-#     endif
+#    ifndef PNG_IMPEXP
+#      ifdef PNG_BUILD_DLL
+#        define PNG_IMPEXP __declspec(dllexport)
+#      else
+#        define PNG_IMPEXP __declspec(dllimport)
+#      endif
+#    endif
 #  endif  /* PNG_IMPEXP */
 #else /* !(DLL || non-cygwin WINDOWS) */
 #   if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
-#      ifndef PNGAPI
-#         define PNGAPI _System
-#      endif
+#     ifndef PNGAPI
+#       define PNGAPI _System
+#     endif
 #   else
-#      if 0 /* ... other platforms, with other meanings */
-#      endif
+#     if 0 /* ... other platforms, with other meanings */
+#     endif
 #   endif
 #endif

@@ -1286,34 +1289,69 @@ typedef char            FAR * FAR * FAR * png_charppp;
 #  ifndef PNG_EXPORT
 #    define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END
 #  endif
-#  ifdef PNG_USE_GLOBAL_ARRAYS
-#    ifndef PNG_EXPORT_VAR
-#      define PNG_EXPORT_VAR(type) PNG_DATA_EXPORT
-#    endif
-#  endif
 #endif

 #ifndef PNG_EXPORT
 #  define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol
 #endif

-#ifdef PNG_USE_GLOBAL_ARRAYS
-#  ifndef PNG_EXPORT_VAR
-#    define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type
+/* Support for compiler specific function attributes.  These are used
+ * so that where compiler support is available incorrect use of API
+ * functions in png.h will generate compiler warnings.
+ *
+ * Added at libpng-1.2.41.
+ */
+#ifdef __GNUC__
+#  ifndef PNG_DEPRECATED
+#    define PNG_DEPRECATED __attribute__((__deprecated__))
 #  endif
+#  ifndef PNG_USE_RESULT
+#    define PNG_USE_RESULT __attribute__((__warn_unused_result__))
+#  endif
+#  ifndef PNG_NORETURN
+#    define PNG_NORETURN   __attribute__((__noreturn__))
+#  endif
+#  ifndef PNG_ALLOCATED
+#    define PNG_ALLOCATED  __attribute__((__malloc__))
+#  endif
+
+#  ifndef PNG_CONFIGURE_LIBPNG
+    /* This specifically protects structure members that should only be
+     * accessed from within the library, therefore should be empty during
+     * a library build.
+     */
+#    ifndef PNG_DEPSTRUCT
+#      define PNG_DEPSTRUCT  __attribute__((__deprecated__))
+#    endif
+#    ifndef PNG_PRIVATE
+#      define PNG_PRIVATE __attribute__((__deprecated__))
+#    endif
+#  endif
+#endif
+
+#ifndef PNG_DEPRECATED
+#  define PNG_DEPRECATED  /* Use of this function is deprecated */
+#endif
+#ifndef PNG_USE_RESULT
+#  define PNG_USE_RESULT  /* The result of this function must be checked */
+#endif
+#ifndef PNG_NORETURN
+#  define PNG_NORETURN    /* This function does not return */
+#endif
+#ifndef PNG_ALLOCATED
+#  define PNG_ALLOCATED   /* The result of the function is new memory */
+#endif
+#ifndef PNG_DEPSTRUCT
+#  define PNG_DEPSTRUCT   /* Access to this struct member is deprecated */
+#endif
+#ifndef PNG_PRIVATE
+#  define PNG_PRIVATE     /* This is a private libpng function */
 #endif

 /* Users may want to use these so they are not private.  Any library
 * functions that are passed far data must be model-independent.
 */

-#ifdef PNG_SETJMP_SUPPORTED
-#  define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf)
-#else
-#  define png_jmpbuf(png_ptr) \
-   (LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED)
-#endif
-
 /* memory model/platform independent fns */
 #ifndef PNG_ABORT
 #  ifdef _WINDOWS_
@@ -1323,8 +1361,8 @@ typedef char            FAR * FAR * FAR * png_charppp;
 #  endif
 #endif

-#if defined(USE_FAR_KEYWORD)
-/* use this to make far-to-near assignments */
+#ifdef USE_FAR_KEYWORD
+/* Use this to make far-to-near assignments */
 #  define CHECK   1
 #  define NOCHECK 0
 #  define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK))
@@ -1337,7 +1375,7 @@ typedef char            FAR * FAR * FAR * png_charppp;
 #  define png_memset  _fmemset
 #  define png_sprintf sprintf
 #else
-#  if defined(_WINDOWS_)  /* favor Windows over C runtime fns */
+#  ifdef _WINDOWS_  /* Favor Windows over C runtime fns */
 #    define CVT_PTR(ptr)         (ptr)
 #    define CVT_PTR_NOCHECK(ptr) (ptr)
 #    define png_strcpy  lstrcpyA
@@ -1357,27 +1395,28 @@ typedef char            FAR * FAR * FAR * png_charppp;
 #    define png_memcpy  memcpy
 #    define png_memset  memset
 #    define png_sprintf sprintf
-#  ifndef PNG_NO_SNPRINTF
-#    ifdef _MSC_VER
-#      define png_snprintf _snprintf   /* Added to v 1.2.19 */
-#      define png_snprintf2 _snprintf
-#      define png_snprintf6 _snprintf
+#    ifndef PNG_NO_SNPRINTF
+#      ifdef _MSC_VER
+#        define png_snprintf _snprintf   /* Added to v 1.2.19 */
+#        define png_snprintf2 _snprintf
+#        define png_snprintf6 _snprintf
+#      else
+#        define png_snprintf snprintf   /* Added to v 1.2.19 */
+#        define png_snprintf2 snprintf
+#        define png_snprintf6 snprintf
+#      endif
 #    else
-#      define png_snprintf snprintf   /* Added to v 1.2.19 */
-#      define png_snprintf2 snprintf
-#      define png_snprintf6 snprintf
+       /* You don't have or don't want to use snprintf().  Caution: Using
+        * sprintf instead of snprintf exposes your application to accidental
+        * or malevolent buffer overflows.  If you don't have snprintf()
+        * as a general rule you should provide one (you can get one from
+        * Portable OpenSSH).
+        */
+#      define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1)
+#      define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2)
+#      define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \
+          sprintf(s1,fmt,x1,x2,x3,x4,x5,x6)
 #    endif
-#  else
-     /* You don't have or don't want to use snprintf().  Caution: Using
-      * sprintf instead of snprintf exposes your application to accidental
-      * or malevolent buffer overflows.  If you don't have snprintf()
-      * as a general rule you should provide one (you can get one from
-      * Portable OpenSSH). */
-#    define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1)
-#    define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2)
-#    define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \
-        sprintf(s1,fmt,x1,x2,x3,x4,x5,x6)
-#  endif
 #  endif
 #endif

--- a/pngerror.c
+++ b/pngerror.c
@@ -1,7 +1,7 @@

 /* pngerror.c - stub functions for i/o and memory allocation
 *
- * Last changed in libpng 1.4.0 [June 27, 2009]
+ * Last changed in libpng 1.4.0 [November 22, 2009]
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -22,19 +22,19 @@

 static void /* PRIVATE */
 png_default_error PNGARG((png_structp png_ptr,
-  png_const_charp error_message));
-#ifndef PNG_NO_WARNINGS
+  png_const_charp error_message)) PNG_NORETURN;
+#ifdef PNG_WARNINGS_SUPPORTED
 static void /* PRIVATE */
 png_default_warning PNGARG((png_structp png_ptr,
  png_const_charp warning_message));
-#endif /* PNG_NO_WARNINGS */
+#endif /* PNG_WARNINGS_SUPPORTED */

 /* This function is called whenever there is a fatal error.  This function
 * should not be changed.  If there is a need to handle errors differently,
 * you should supply a replacement error function and use png_set_error_fn()
 * to replace the error function at run-time.
 */
-#ifndef PNG_NO_ERROR_TEXT
+#ifdef PNG_ERROR_TEXT_SUPPORTED
 void PNGAPI
 png_error(png_structp png_ptr, png_const_charp error_message)
 {
@@ -93,9 +93,9 @@ png_err(png_structp png_ptr)
      use the default handler, which will not return. */
   png_default_error(png_ptr, '\0');
 }
-#endif /* PNG_NO_ERROR_TEXT */
+#endif /* PNG_ERROR_TEXT_SUPPORTED */

-#ifndef PNG_NO_WARNINGS
+#ifdef PNG_WARNINGS_SUPPORTED
 /* This function is called whenever there is a non-fatal error.  This function
 * should not be changed.  If there is a need to handle warnings differently,
 * you should supply a replacement warning function and use
@@ -125,7 +125,7 @@ png_warning(png_structp png_ptr, png_const_charp warning_message)
   else
      png_default_warning(png_ptr, warning_message + offset);
 }
-#endif /* PNG_NO_WARNINGS */
+#endif /* PNG_WARNINGS_SUPPORTED */

 #ifdef PNG_BENIGN_ERRORS_SUPPORTED
 void PNGAPI
@@ -151,8 +151,7 @@ static PNG_CONST char png_digit[16] = {
 };

 #define PNG_MAX_ERROR_TEXT 64
-
-#if !defined(PNG_NO_WARNINGS) || !defined(PNG_NO_ERROR_TEXT)
+#if defined(PNG_WARNINGS_SUPPORTED) || defined(PNG_ERROR_TEXT_SUPPORTED)
 static void /* PRIVATE */
 png_format_buffer(png_structp png_ptr, png_charp buffer, png_const_charp
   error_message)
@@ -200,9 +199,9 @@ png_chunk_error(png_structp png_ptr, png_const_charp error_message)
   }
 }
 #endif /* PNG_READ_SUPPORTED */
-#endif /* !defined(PNG_NO_WARNINGS) || !defined(PNG_NO_ERROR_TEXT) */
+#endif /* PNG_WARNINGS_SUPPORTED || PNG_ERROR_TEXT_SUPPORTED */

-#ifndef PNG_NO_WARNINGS
+#ifdef PNG_WARNINGS_SUPPORTED
 void PNGAPI
 png_chunk_warning(png_structp png_ptr, png_const_charp warning_message)
 {
@@ -215,7 +214,7 @@ png_chunk_warning(png_structp png_ptr, png_const_charp warning_message)
     png_warning(png_ptr, msg);
   }
 }
-#endif /* PNG_NO_WARNINGS */
+#endif /* PNG_WARNINGS_SUPPORTED */

 #ifdef PNG_READ_SUPPORTED
 #ifdef PNG_BENIGN_ERRORS_SUPPORTED
@@ -230,6 +229,21 @@ png_chunk_benign_error(png_structp png_ptr, png_const_charp error_message)
 #endif
 #endif /* PNG_READ_SUPPORTED */

+#ifdef PNG_SETJMP_SUPPORTED
+/* This API only exists if ANSI-C style error handling is used, otherwise
+ * it is necessary for png_default_error to be overridden.
+ */
+jmp_buf* PNGAPI
+png_set_longjmp_fn(png_structp png_ptr, png_longjmp_ptr longjmp_fn, size_t jmp_buf_size)
+{
+   if (png_ptr == NULL || jmp_buf_size != png_sizeof(jmp_buf))
+      return NULL;
+
+   png_ptr->longjmp_fn = longjmp_fn;
+   return &png_ptr->jmpbuf;
+}
+#endif
+
 /* This is the default error handling function.  Note that replacements for
 * this function MUST NOT RETURN, or the program will likely crash.  This
 * function is used by default, or if the program supplies NULL for the
@@ -238,7 +252,7 @@ png_chunk_benign_error(png_structp png_ptr, png_const_charp error_message)
 static void /* PRIVATE */
 png_default_error(png_structp png_ptr, png_const_charp error_message)
 {
-#ifndef PNG_NO_CONSOLE_IO
+#ifdef PNG_CONSOLE_IO_SUPPORTED
 #ifdef PNG_ERROR_NUMBERS_SUPPORTED
   if (*error_message == PNG_LITERAL_SHARP)
   {
@@ -274,27 +288,27 @@ png_default_error(png_structp png_ptr, png_const_charp error_message)
 #endif

 #ifdef PNG_SETJMP_SUPPORTED
-   if (png_ptr)
+   if (png_ptr && png_ptr->longjmp_fn)
   {
 #  ifdef USE_FAR_KEYWORD
   {
      jmp_buf jmpbuf;
      png_memcpy(jmpbuf, png_ptr->jmpbuf, png_sizeof(jmp_buf));
-      longjmp(jmpbuf, 1);
+      png_ptr->longjmp_fn(jmpbuf, 1);
   }
 #  else
-   longjmp(png_ptr->jmpbuf, 1);
+   png_ptr->longjmp_fn(png_ptr->jmpbuf, 1);
 #  endif
   }
-#else
-   PNG_ABORT();
 #endif
-#ifdef PNG_NO_CONSOLE_IO
+   /* Here if not setjmp support or if png_ptr is null. */
+   PNG_ABORT();
+#ifndef PNG_CONSOLE_IO_SUPPORTED
   error_message = error_message; /* Make compiler happy */
 #endif
 }

-#ifndef PNG_NO_WARNINGS
+#ifdef PNG_WARNINGS_SUPPORTED
 /* This function is called when there is a warning, but the library thinks
 * it can continue anyway.  Replacement functions don't have to do anything
 * here if you don't want them to.  In the default configuration, png_ptr is
@@ -303,7 +317,7 @@ png_default_error(png_structp png_ptr, png_const_charp error_message)
 static void /* PRIVATE */
 png_default_warning(png_structp png_ptr, png_const_charp warning_message)
 {
-#ifndef PNG_NO_CONSOLE_IO
+#ifdef PNG_CONSOLE_IO_SUPPORTED
 #  ifdef PNG_ERROR_NUMBERS_SUPPORTED
   if (*warning_message == PNG_LITERAL_SHARP)
   {
@@ -340,7 +354,7 @@ png_default_warning(png_structp png_ptr, png_const_charp warning_message)
 #endif
   png_ptr = png_ptr; /* Make compiler happy */
 }
-#endif /* PNG_NO_WARNINGS */
+#endif /* PNG_WARNINGS_SUPPORTED */

 /* This function is called when the application wants to use another method
 * of handling errors and warnings.  Note that the error function MUST NOT
--- a/pnggccrd.c
+++ b/pnggccrd.c
--- a/pngget.c
+++ b/pngget.c
@@ -1,7 +1,7 @@

 /* pngget.c - retrieval of values from info struct
 *
- * Last changed in libpng 1.4.0 [June 27, 2009]
+ * Last changed in libpng 1.4.0 [November 22, 2009]
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -36,7 +36,7 @@ png_get_rowbytes(png_structp png_ptr, png_infop info_ptr)
      return(0);
 }

-#if defined(PNG_INFO_IMAGE_SUPPORTED)
+#ifdef PNG_INFO_IMAGE_SUPPORTED
 png_bytepp PNGAPI
 png_get_rows(png_structp png_ptr, png_infop info_ptr)
 {
@@ -117,7 +117,7 @@ png_uint_32 PNGAPI
 png_get_x_pixels_per_meter(png_structp png_ptr, png_infop info_ptr)
 {
   if (png_ptr != NULL && info_ptr != NULL)
-#if defined(PNG_pHYs_SUPPORTED)
+#ifdef PNG_pHYs_SUPPORTED
   if (info_ptr->valid & PNG_INFO_pHYs)
   {
      png_debug1(1, "in %s retrieval function", "png_get_x_pixels_per_meter");
@@ -138,7 +138,7 @@ png_uint_32 PNGAPI
 png_get_y_pixels_per_meter(png_structp png_ptr, png_infop info_ptr)
 {
   if (png_ptr != NULL && info_ptr != NULL)
-#if defined(PNG_pHYs_SUPPORTED)
+#ifdef PNG_pHYs_SUPPORTED
   if (info_ptr->valid & PNG_INFO_pHYs)
   {
      png_debug1(1, "in %s retrieval function", "png_get_y_pixels_per_meter");
@@ -159,7 +159,7 @@ png_uint_32 PNGAPI
 png_get_pixels_per_meter(png_structp png_ptr, png_infop info_ptr)
 {
   if (png_ptr != NULL && info_ptr != NULL)
-#if defined(PNG_pHYs_SUPPORTED)
+#ifdef PNG_pHYs_SUPPORTED
   if (info_ptr->valid & PNG_INFO_pHYs)
   {
      png_debug1(1, "in %s retrieval function", "png_get_pixels_per_meter");
@@ -182,13 +182,15 @@ float PNGAPI
 png_get_pixel_aspect_ratio(png_structp png_ptr, png_infop info_ptr)
   {
   if (png_ptr != NULL && info_ptr != NULL)
-#if defined(PNG_pHYs_SUPPORTED)
+#ifdef PNG_pHYs_SUPPORTED

   if (info_ptr->valid & PNG_INFO_pHYs)
   {
      png_debug1(1, "in %s retrieval function", "png_get_aspect_ratio");
+
      if (info_ptr->x_pixels_per_unit == 0)
         return ((float)0.0);
+
      else
         return ((float)((float)info_ptr->y_pixels_per_unit
            /(float)info_ptr->x_pixels_per_unit));
@@ -204,7 +206,7 @@ png_int_32 PNGAPI
 png_get_x_offset_microns(png_structp png_ptr, png_infop info_ptr)
 {
   if (png_ptr != NULL && info_ptr != NULL)
-#if defined(PNG_oFFs_SUPPORTED)
+#ifdef PNG_oFFs_SUPPORTED

   if (info_ptr->valid & PNG_INFO_oFFs)
   {
@@ -227,7 +229,7 @@ png_get_y_offset_microns(png_structp png_ptr, png_infop info_ptr)
 {
   if (png_ptr != NULL && info_ptr != NULL)

-#if defined(PNG_oFFs_SUPPORTED)
+#ifdef PNG_oFFs_SUPPORTED
   if (info_ptr->valid & PNG_INFO_oFFs)
   {
      png_debug1(1, "in %s retrieval function", "png_get_y_offset_microns");
@@ -249,7 +251,7 @@ png_get_x_offset_pixels(png_structp png_ptr, png_infop info_ptr)
 {
   if (png_ptr != NULL && info_ptr != NULL)

-#if defined(PNG_oFFs_SUPPORTED)
+#ifdef PNG_oFFs_SUPPORTED
   if (info_ptr->valid & PNG_INFO_oFFs)
   {
      png_debug1(1, "in %s retrieval function", "png_get_x_offset_microns");
@@ -271,7 +273,7 @@ png_get_y_offset_pixels(png_structp png_ptr, png_infop info_ptr)
 {
   if (png_ptr != NULL && info_ptr != NULL)

-#if defined(PNG_oFFs_SUPPORTED)
+#ifdef PNG_oFFs_SUPPORTED
   if (info_ptr->valid & PNG_INFO_oFFs)
   {
      png_debug1(1, "in %s retrieval function", "png_get_y_offset_microns");
@@ -324,7 +326,7 @@ png_get_y_offset_inches(png_structp png_ptr, png_infop info_ptr)
     *.00003937);
 }

-#if defined(PNG_pHYs_SUPPORTED)
+#ifdef PNG_pHYs_SUPPORTED
 png_uint_32 PNGAPI
 png_get_pHYs_dpi(png_structp png_ptr, png_infop info_ptr,
   png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
@@ -334,6 +336,7 @@ png_get_pHYs_dpi(png_structp png_ptr, png_infop info_ptr,
   if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
   {
      png_debug1(1, "in %s retrieval function", "pHYs");
+
      if (res_x != NULL)
      {
         *res_x = info_ptr->x_pixels_per_unit;
@@ -382,7 +385,7 @@ png_get_signature(png_structp png_ptr, png_infop info_ptr)
      return (NULL);
 }

-#if defined(PNG_bKGD_SUPPORTED)
+#ifdef PNG_bKGD_SUPPORTED
 png_uint_32 PNGAPI
 png_get_bKGD(png_structp png_ptr, png_infop info_ptr,
   png_color_16p *background)
@@ -391,6 +394,7 @@ png_get_bKGD(png_structp png_ptr, png_infop info_ptr,
      && background != NULL)
   {
      png_debug1(1, "in %s retrieval function", "bKGD");
+
      *background = &(info_ptr->background);
      return (PNG_INFO_bKGD);
   }
@@ -398,7 +402,7 @@ png_get_bKGD(png_structp png_ptr, png_infop info_ptr,
 }
 #endif

-#if defined(PNG_cHRM_SUPPORTED)
+#ifdef PNG_cHRM_SUPPORTED
 #ifdef PNG_FLOATING_POINT_SUPPORTED
 png_uint_32 PNGAPI
 png_get_cHRM(png_structp png_ptr, png_infop info_ptr,
@@ -408,6 +412,7 @@ png_get_cHRM(png_structp png_ptr, png_infop info_ptr,
   if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM))
   {
      png_debug1(1, "in %s retrieval function", "cHRM");
+
      if (white_x != NULL)
         *white_x = (double)info_ptr->x_white;
      if (white_y != NULL)
@@ -436,9 +441,10 @@ png_get_cHRM_fixed(png_structp png_ptr, png_infop info_ptr,
   png_fixed_point *red_y, png_fixed_point *green_x, png_fixed_point *green_y,
   png_fixed_point *blue_x, png_fixed_point *blue_y)
 {
+   png_debug1(1, "in %s retrieval function", "cHRM");
+
   if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM))
   {
-      png_debug1(1, "in %s retrieval function", "cHRM");
      if (white_x != NULL)
         *white_x = info_ptr->int_x_white;
      if (white_y != NULL)
@@ -462,15 +468,16 @@ png_get_cHRM_fixed(png_structp png_ptr, png_infop info_ptr,
 #endif
 #endif

-#if defined(PNG_gAMA_SUPPORTED)
+#ifdef PNG_gAMA_SUPPORTED
 #ifdef PNG_FLOATING_POINT_SUPPORTED
 png_uint_32 PNGAPI
 png_get_gAMA(png_structp png_ptr, png_infop info_ptr, double *file_gamma)
 {
+   png_debug1(1, "in %s retrieval function", "gAMA");
+
   if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA)
      && file_gamma != NULL)
   {
-      png_debug1(1, "in %s retrieval function", "gAMA");
      *file_gamma = (double)info_ptr->gamma;
      return (PNG_INFO_gAMA);
   }
@@ -482,10 +489,11 @@ png_uint_32 PNGAPI
 png_get_gAMA_fixed(png_structp png_ptr, png_infop info_ptr,
    png_fixed_point *int_file_gamma)
 {
+   png_debug1(1, "in %s retrieval function", "gAMA");
+
   if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA)
      && int_file_gamma != NULL)
   {
-      png_debug1(1, "in %s retrieval function", "gAMA");
      *int_file_gamma = info_ptr->int_gamma;
      return (PNG_INFO_gAMA);
   }
@@ -494,14 +502,15 @@ png_get_gAMA_fixed(png_structp png_ptr, png_infop info_ptr,
 #endif
 #endif

-#if defined(PNG_sRGB_SUPPORTED)
+#ifdef PNG_sRGB_SUPPORTED
 png_uint_32 PNGAPI
 png_get_sRGB(png_structp png_ptr, png_infop info_ptr, int *file_srgb_intent)
 {
+   png_debug1(1, "in %s retrieval function", "sRGB");
+
   if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_sRGB)
      && file_srgb_intent != NULL)
   {
-      png_debug1(1, "in %s retrieval function", "sRGB");
      *file_srgb_intent = (int)info_ptr->srgb_intent;
      return (PNG_INFO_sRGB);
   }
@@ -509,16 +518,17 @@ png_get_sRGB(png_structp png_ptr, png_infop info_ptr, int *file_srgb_intent)
 }
 #endif

-#if defined(PNG_iCCP_SUPPORTED)
+#ifdef PNG_iCCP_SUPPORTED
 png_uint_32 PNGAPI
 png_get_iCCP(png_structp png_ptr, png_infop info_ptr,
             png_charpp name, int *compression_type,
             png_charpp profile, png_uint_32 *proflen)
 {
+   png_debug1(1, "in %s retrieval function", "iCCP");
+
   if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_iCCP)
      && name != NULL && profile != NULL && proflen != NULL)
   {
-      png_debug1(1, "in %s retrieval function", "iCCP");
      *name = info_ptr->iccp_name;
      *profile = info_ptr->iccp_profile;
      /* Compression_type is a dummy so the API won't have to change
@@ -532,7 +542,7 @@ png_get_iCCP(png_structp png_ptr, png_infop info_ptr,
 }
 #endif

-#if defined(PNG_sPLT_SUPPORTED)
+#ifdef PNG_sPLT_SUPPORTED
 png_uint_32 PNGAPI
 png_get_sPLT(png_structp png_ptr, png_infop info_ptr,
             png_sPLT_tpp spalettes)
@@ -546,14 +556,15 @@ png_get_sPLT(png_structp png_ptr, png_infop info_ptr,
 }
 #endif

-#if defined(PNG_hIST_SUPPORTED)
+#ifdef PNG_hIST_SUPPORTED
 png_uint_32 PNGAPI
 png_get_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p *hist)
 {
+   png_debug1(1, "in %s retrieval function", "hIST");
+
   if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_hIST)
      && hist != NULL)
   {
-      png_debug1(1, "in %s retrieval function", "hIST");
      *hist = info_ptr->hist;
      return (PNG_INFO_hIST);
   }
@@ -568,62 +579,48 @@ png_get_IHDR(png_structp png_ptr, png_infop info_ptr,
   int *filter_type)

 {
-   if (png_ptr != NULL && info_ptr != NULL && width != NULL && height != NULL &&
-      bit_depth != NULL && color_type != NULL)
-   {
-      png_debug1(1, "in %s retrieval function", "IHDR");
-      *width = info_ptr->width;
-      *height = info_ptr->height;
-      *bit_depth = info_ptr->bit_depth;
-      if (info_ptr->bit_depth < 1 || info_ptr->bit_depth > 16)
-         png_error(png_ptr, "Invalid bit depth");
+   png_debug1(1, "in %s retrieval function", "IHDR");

-      *color_type = info_ptr->color_type;
+   if (png_ptr == NULL || info_ptr == NULL || width == NULL ||
+       height == NULL || bit_depth == NULL || color_type == NULL)
+      return (0);

-      if (info_ptr->color_type > 6)
-         png_error(png_ptr, "Invalid color type");
+   *width = info_ptr->width;
+   *height = info_ptr->height;
+   *bit_depth = info_ptr->bit_depth;
+   *color_type = info_ptr->color_type;

-      if (compression_type != NULL)
-         *compression_type = info_ptr->compression_type;
+   if (compression_type != NULL)
+      *compression_type = info_ptr->compression_type;

-      if (filter_type != NULL)
-         *filter_type = info_ptr->filter_type;
+   if (filter_type != NULL)
+      *filter_type = info_ptr->filter_type;

-      if (interlace_type != NULL)
-         *interlace_type = info_ptr->interlace_type;
+   if (interlace_type != NULL)
+      *interlace_type = info_ptr->interlace_type;

-      /* Check for potential overflow of rowbytes */
-      if (*width == 0 || *width > PNG_UINT_31_MAX)
-        png_error(png_ptr, "Invalid image width");
+   /* This is redundant if we can be sure that the info_ptr values were all
+    * assigned in png_set_IHDR().  We do the check anyhow in case an
+    * application has ignored our advice not to mess with the members
+    * of info_ptr directly.
+    */
+   png_check_IHDR (png_ptr, info_ptr->width, info_ptr->height,
+       info_ptr->bit_depth, info_ptr->color_type, info_ptr->interlace_type,
+       info_ptr->compression_type, info_ptr->filter_type);

-      if (*height == 0 || *height > PNG_UINT_31_MAX)
-        png_error(png_ptr, "Invalid image height");
-
-      if (info_ptr->width > (PNG_UINT_32_MAX
-                 >> 3)      /* 8-byte RGBA pixels */
-                 - 64       /* bigrowbuf hack */
-                 - 1        /* filter byte */
-                 - 7*8      /* rounding of width to multiple of 8 pixels */
-                 - 8)       /* extra max_pixel_depth pad */
-      {
-         png_warning(png_ptr,
-            "Width too large for libpng to process image data");
-      }
-
-      return (1);
-   }
-   return (0);
+   return (1);
 }

-#if defined(PNG_oFFs_SUPPORTED)
+#ifdef PNG_oFFs_SUPPORTED
 png_uint_32 PNGAPI
 png_get_oFFs(png_structp png_ptr, png_infop info_ptr,
   png_int_32 *offset_x, png_int_32 *offset_y, int *unit_type)
 {
+   png_debug1(1, "in %s retrieval function", "oFFs");
+
   if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs)
      && offset_x != NULL && offset_y != NULL && unit_type != NULL)
   {
-      png_debug1(1, "in %s retrieval function", "oFFs");
      *offset_x = info_ptr->x_offset;
      *offset_y = info_ptr->y_offset;
      *unit_type = (int)info_ptr->offset_unit_type;
@@ -633,17 +630,18 @@ png_get_oFFs(png_structp png_ptr, png_infop info_ptr,
 }
 #endif

-#if defined(PNG_pCAL_SUPPORTED)
+#ifdef PNG_pCAL_SUPPORTED
 png_uint_32 PNGAPI
 png_get_pCAL(png_structp png_ptr, png_infop info_ptr,
   png_charp *purpose, png_int_32 *X0, png_int_32 *X1, int *type, int *nparams,
   png_charp *units, png_charpp *params)
 {
+   png_debug1(1, "in %s retrieval function", "pCAL");
+
   if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pCAL)
       && purpose != NULL && X0 != NULL && X1 != NULL && type != NULL &&
       nparams != NULL && units != NULL && params != NULL)
   {
-      png_debug1(1, "in %s retrieval function", "pCAL");
      *purpose = info_ptr->pcal_purpose;
      *X0 = info_ptr->pcal_X0;
      *X1 = info_ptr->pcal_X1;
@@ -657,7 +655,7 @@ png_get_pCAL(png_structp png_ptr, png_infop info_ptr,
 }
 #endif

-#if defined(PNG_sCAL_SUPPORTED)
+#ifdef PNG_sCAL_SUPPORTED
 #ifdef PNG_FLOATING_POINT_SUPPORTED
 png_uint_32 PNGAPI
 png_get_sCAL(png_structp png_ptr, png_infop info_ptr,
@@ -693,18 +691,18 @@ png_get_sCAL_s(png_structp png_ptr, png_infop info_ptr,
 #endif
 #endif

-#if defined(PNG_pHYs_SUPPORTED)
+#ifdef PNG_pHYs_SUPPORTED
 png_uint_32 PNGAPI
 png_get_pHYs(png_structp png_ptr, png_infop info_ptr,
   png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
 {
   png_uint_32 retval = 0;

+   png_debug1(1, "in %s retrieval function", "pHYs");
+
   if (png_ptr != NULL && info_ptr != NULL &&
      (info_ptr->valid & PNG_INFO_pHYs))
   {
-      png_debug1(1, "in %s retrieval function", "pHYs");
-
      if (res_x != NULL)
      {
         *res_x = info_ptr->x_pixels_per_unit;
@@ -731,10 +729,11 @@ png_uint_32 PNGAPI
 png_get_PLTE(png_structp png_ptr, png_infop info_ptr, png_colorp *palette,
   int *num_palette)
 {
+   png_debug1(1, "in %s retrieval function", "PLTE");
+
   if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_PLTE)
       && palette != NULL)
   {
-      png_debug1(1, "in %s retrieval function", "PLTE");
      *palette = info_ptr->palette;
      *num_palette = info_ptr->num_palette;
      png_debug1(3, "num_palette = %d", *num_palette);
@@ -743,14 +742,15 @@ png_get_PLTE(png_structp png_ptr, png_infop info_ptr, png_colorp *palette,
   return (0);
 }

-#if defined(PNG_sBIT_SUPPORTED)
+#ifdef PNG_sBIT_SUPPORTED
 png_uint_32 PNGAPI
 png_get_sBIT(png_structp png_ptr, png_infop info_ptr, png_color_8p *sig_bit)
 {
+   png_debug1(1, "in %s retrieval function", "sBIT");
+
   if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_sBIT)
      && sig_bit != NULL)
   {
-      png_debug1(1, "in %s retrieval function", "sBIT");
      *sig_bit = &(info_ptr->sig_bit);
      return (PNG_INFO_sBIT);
   }
@@ -758,7 +758,7 @@ png_get_sBIT(png_structp png_ptr, png_infop info_ptr, png_color_8p *sig_bit)
 }
 #endif

-#if defined(PNG_TEXT_SUPPORTED)
+#ifdef PNG_TEXT_SUPPORTED
 png_uint_32 PNGAPI
 png_get_text(png_structp png_ptr, png_infop info_ptr, png_textp *text_ptr,
   int *num_text)
@@ -783,14 +783,15 @@ png_get_text(png_structp png_ptr, png_infop info_ptr, png_textp *text_ptr,
 }
 #endif

-#if defined(PNG_tIME_SUPPORTED)
+#ifdef PNG_tIME_SUPPORTED
 png_uint_32 PNGAPI
 png_get_tIME(png_structp png_ptr, png_infop info_ptr, png_timep *mod_time)
 {
+   png_debug1(1, "in %s retrieval function", "tIME");
+
   if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_tIME)
       && mod_time != NULL)
   {
-      png_debug1(1, "in %s retrieval function", "tIME");
      *mod_time = &(info_ptr->mod_time);
      return (PNG_INFO_tIME);
   }
@@ -798,20 +799,21 @@ png_get_tIME(png_structp png_ptr, png_infop info_ptr, png_timep *mod_time)
 }
 #endif

-#if defined(PNG_tRNS_SUPPORTED)
+#ifdef PNG_tRNS_SUPPORTED
 png_uint_32 PNGAPI
 png_get_tRNS(png_structp png_ptr, png_infop info_ptr,
-   png_bytep *trans, int *num_trans, png_color_16p *trans_color)
+   png_bytep *trans_alpha, int *num_trans, png_color_16p *trans_color)
 {
   png_uint_32 retval = 0;
   if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS))
   {
      png_debug1(1, "in %s retrieval function", "tRNS");
+
      if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
      {
-          if (trans != NULL)
+          if (trans_alpha != NULL)
          {
-             *trans = info_ptr->trans;
+             *trans_alpha = info_ptr->trans_alpha;
             retval |= PNG_INFO_tRNS;
          }

@@ -826,8 +828,8 @@ png_get_tRNS(png_structp png_ptr, png_infop info_ptr,
             retval |= PNG_INFO_tRNS;
          }

-          if (trans != NULL)
-             *trans = NULL;
+          if (trans_alpha != NULL)
+             *trans_alpha = NULL;
      }
      if (num_trans != NULL)
      {
@@ -839,7 +841,7 @@ png_get_tRNS(png_structp png_ptr, png_infop info_ptr,
 }
 #endif

-#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
 png_uint_32 PNGAPI
 png_get_unknown_chunks(png_structp png_ptr, png_infop info_ptr,
             png_unknown_chunkpp unknowns)
@@ -853,7 +855,7 @@ png_get_unknown_chunks(png_structp png_ptr, png_infop info_ptr,
 }
 #endif

-#if defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
 png_byte PNGAPI
 png_get_rgb_to_gray_status (png_structp png_ptr)
 {
@@ -861,7 +863,7 @@ png_get_rgb_to_gray_status (png_structp png_ptr)
 }
 #endif

-#if defined(PNG_USER_CHUNKS_SUPPORTED)
+#ifdef PNG_USER_CHUNKS_SUPPORTED
 png_voidp PNGAPI
 png_get_user_chunk_ptr(png_structp png_ptr)
 {
--- a/pngmem.c
+++ b/pngmem.c
@@ -1,7 +1,7 @@

 /* pngmem.c - stub functions for memory allocation
 *
- * Last changed in libpng 1.4.0 [June 27, 2009]
+ * Last changed in libpng 1.4.0 [November 22, 2009]
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -114,7 +114,6 @@ png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
 * result, we would be truncating potentially larger memory requests
 * (which should cause a fatal error) and introducing major problems.
 */
-#ifdef PNG_CALLOC_SUPPORTED
 png_voidp PNGAPI
 png_calloc(png_structp png_ptr, png_alloc_size_t size)
 {
@@ -125,7 +124,6 @@ png_calloc(png_structp png_ptr, png_alloc_size_t size)
      png_memset(ret,0,(png_size_t)size);
   return (ret);
 }
-#endif

 png_voidp PNGAPI
 png_malloc(png_structp png_ptr, png_alloc_size_t size)
--- a/pngpread.c
+++ b/pngpread.c
@@ -1,7 +1,7 @@

 /* pngpread.c - read a png file in push mode
 *
- * Last changed in libpng 1.4.0 [June 27, 2009]
+ * Last changed in libpng 1.4.0 [November 22, 2009]
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -70,7 +70,7 @@ png_process_some_data(png_structp png_ptr, png_infop info_ptr)
         break;
      }

-#if defined(PNG_READ_tEXt_SUPPORTED)
+#ifdef PNG_READ_tEXt_SUPPORTED
      case PNG_READ_tEXt_MODE:
      {
         png_push_read_tEXt(png_ptr, info_ptr);
@@ -78,7 +78,7 @@ png_process_some_data(png_structp png_ptr, png_infop info_ptr)
      }

 #endif
-#if defined(PNG_READ_zTXt_SUPPORTED)
+#ifdef PNG_READ_zTXt_SUPPORTED
      case PNG_READ_zTXt_MODE:
      {
         png_push_read_zTXt(png_ptr, info_ptr);
@@ -86,7 +86,7 @@ png_process_some_data(png_structp png_ptr, png_infop info_ptr)
      }

 #endif
-#if defined(PNG_READ_iTXt_SUPPORTED)
+#ifdef PNG_READ_iTXt_SUPPORTED
      case PNG_READ_iTXt_MODE:
      {
         png_push_read_iTXt(png_ptr, info_ptr);
@@ -149,63 +149,62 @@ png_push_read_sig(png_structp png_ptr, png_infop info_ptr)
 void /* PRIVATE */
 png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
 {
-#ifdef PNG_USE_LOCAL_ARRAYS
-      PNG_CONST PNG_IHDR;
-      PNG_CONST PNG_IDAT;
-      PNG_CONST PNG_IEND;
-      PNG_CONST PNG_PLTE;
-#if defined(PNG_READ_bKGD_SUPPORTED)
-      PNG_CONST PNG_bKGD;
+      PNG_IHDR;
+      PNG_IDAT;
+      PNG_IEND;
+      PNG_PLTE;
+#ifdef PNG_READ_bKGD_SUPPORTED
+      PNG_bKGD;
 #endif
-#if defined(PNG_READ_cHRM_SUPPORTED)
-      PNG_CONST PNG_cHRM;
+#ifdef PNG_READ_cHRM_SUPPORTED
+      PNG_cHRM;
 #endif
-#if defined(PNG_READ_gAMA_SUPPORTED)
-      PNG_CONST PNG_gAMA;
+#ifdef PNG_READ_gAMA_SUPPORTED
+      PNG_gAMA;
 #endif
-#if defined(PNG_READ_hIST_SUPPORTED)
-      PNG_CONST PNG_hIST;
+#ifdef PNG_READ_hIST_SUPPORTED
+      PNG_hIST;
 #endif
-#if defined(PNG_READ_iCCP_SUPPORTED)
-      PNG_CONST PNG_iCCP;
+#ifdef PNG_READ_iCCP_SUPPORTED
+      PNG_iCCP;
 #endif
-#if defined(PNG_READ_iTXt_SUPPORTED)
-      PNG_CONST PNG_iTXt;
+#ifdef PNG_READ_iTXt_SUPPORTED
+      PNG_iTXt;
 #endif
-#if defined(PNG_READ_oFFs_SUPPORTED)
-      PNG_CONST PNG_oFFs;
+#ifdef PNG_READ_oFFs_SUPPORTED
+      PNG_oFFs;
 #endif
-#if defined(PNG_READ_pCAL_SUPPORTED)
-      PNG_CONST PNG_pCAL;
+#ifdef PNG_READ_pCAL_SUPPORTED
+      PNG_pCAL;
 #endif
-#if defined(PNG_READ_pHYs_SUPPORTED)
-      PNG_CONST PNG_pHYs;
+#ifdef PNG_READ_pHYs_SUPPORTED
+      PNG_pHYs;
 #endif
-#if defined(PNG_READ_sBIT_SUPPORTED)
-      PNG_CONST PNG_sBIT;
+#ifdef PNG_READ_sBIT_SUPPORTED
+      PNG_sBIT;
 #endif
-#if defined(PNG_READ_sCAL_SUPPORTED)
-      PNG_CONST PNG_sCAL;
+#ifdef PNG_READ_sCAL_SUPPORTED
+      PNG_sCAL;
 #endif
-#if defined(PNG_READ_sRGB_SUPPORTED)
-      PNG_CONST PNG_sRGB;
+#ifdef PNG_READ_sRGB_SUPPORTED
+      PNG_sRGB;
 #endif
-#if defined(PNG_READ_sPLT_SUPPORTED)
-      PNG_CONST PNG_sPLT;
+#ifdef PNG_READ_sPLT_SUPPORTED
+      PNG_sPLT;
 #endif
-#if defined(PNG_READ_tEXt_SUPPORTED)
-      PNG_CONST PNG_tEXt;
+#ifdef PNG_READ_tEXt_SUPPORTED
+      PNG_tEXt;
 #endif
-#if defined(PNG_READ_tIME_SUPPORTED)
-      PNG_CONST PNG_tIME;
+#ifdef PNG_READ_tIME_SUPPORTED
+      PNG_tIME;
 #endif
-#if defined(PNG_READ_tRNS_SUPPORTED)
-      PNG_CONST PNG_tRNS;
+#ifdef PNG_READ_tRNS_SUPPORTED
+      PNG_tRNS;
 #endif
-#if defined(PNG_READ_zTXt_SUPPORTED)
-      PNG_CONST PNG_zTXt;
+#ifdef PNG_READ_zTXt_SUPPORTED
+      PNG_zTXt;
 #endif
-#endif /* PNG_USE_LOCAL_ARRAYS */
+
   /* First we make sure we have enough data for the 4 byte chunk name
    * and the 4 byte chunk length before proceeding with decoding the
    * chunk data.  To fully decode each of these chunks, we also make
@@ -334,7 +333,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
      return;
   }

-#if defined(PNG_READ_gAMA_SUPPORTED)
+#ifdef PNG_READ_gAMA_SUPPORTED
   else if (!png_memcmp(png_ptr->chunk_name, png_gAMA, 4))
   {
      if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@@ -347,7 +346,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
   }

 #endif
-#if defined(PNG_READ_sBIT_SUPPORTED)
+#ifdef PNG_READ_sBIT_SUPPORTED
   else if (!png_memcmp(png_ptr->chunk_name, png_sBIT, 4))
   {
      if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@@ -360,7 +359,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
   }

 #endif
-#if defined(PNG_READ_cHRM_SUPPORTED)
+#ifdef PNG_READ_cHRM_SUPPORTED
   else if (!png_memcmp(png_ptr->chunk_name, png_cHRM, 4))
   {
      if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@@ -373,7 +372,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
   }

 #endif
-#if defined(PNG_READ_sRGB_SUPPORTED)
+#ifdef PNG_READ_sRGB_SUPPORTED
   else if (!png_memcmp(png_ptr->chunk_name, png_sRGB, 4))
   {
      if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@@ -386,7 +385,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
   }

 #endif
-#if defined(PNG_READ_iCCP_SUPPORTED)
+#ifdef PNG_READ_iCCP_SUPPORTED
   else if (!png_memcmp(png_ptr->chunk_name, png_iCCP, 4))
   {
      if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@@ -399,7 +398,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
   }

 #endif
-#if defined(PNG_READ_sPLT_SUPPORTED)
+#ifdef PNG_READ_sPLT_SUPPORTED
   else if (!png_memcmp(png_ptr->chunk_name, png_sPLT, 4))
   {
      if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@@ -412,7 +411,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
   }

 #endif
-#if defined(PNG_READ_tRNS_SUPPORTED)
+#ifdef PNG_READ_tRNS_SUPPORTED
   else if (!png_memcmp(png_ptr->chunk_name, png_tRNS, 4))
   {
      if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@@ -425,7 +424,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
   }

 #endif
-#if defined(PNG_READ_bKGD_SUPPORTED)
+#ifdef PNG_READ_bKGD_SUPPORTED
   else if (!png_memcmp(png_ptr->chunk_name, png_bKGD, 4))
   {
      if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@@ -438,7 +437,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
   }

 #endif
-#if defined(PNG_READ_hIST_SUPPORTED)
+#ifdef PNG_READ_hIST_SUPPORTED
   else if (!png_memcmp(png_ptr->chunk_name, png_hIST, 4))
   {
      if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@@ -451,7 +450,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
   }

 #endif
-#if defined(PNG_READ_pHYs_SUPPORTED)
+#ifdef PNG_READ_pHYs_SUPPORTED
   else if (!png_memcmp(png_ptr->chunk_name, png_pHYs, 4))
   {
      if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@@ -464,7 +463,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
   }

 #endif
-#if defined(PNG_READ_oFFs_SUPPORTED)
+#ifdef PNG_READ_oFFs_SUPPORTED
   else if (!png_memcmp(png_ptr->chunk_name, png_oFFs, 4))
   {
      if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@@ -477,7 +476,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
   }
 #endif

-#if defined(PNG_READ_pCAL_SUPPORTED)
+#ifdef PNG_READ_pCAL_SUPPORTED
   else if (!png_memcmp(png_ptr->chunk_name, png_pCAL, 4))
   {
      if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@@ -490,7 +489,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
   }

 #endif
-#if defined(PNG_READ_sCAL_SUPPORTED)
+#ifdef PNG_READ_sCAL_SUPPORTED
   else if (!png_memcmp(png_ptr->chunk_name, png_sCAL, 4))
   {
      if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@@ -503,7 +502,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
   }

 #endif
-#if defined(PNG_READ_tIME_SUPPORTED)
+#ifdef PNG_READ_tIME_SUPPORTED
   else if (!png_memcmp(png_ptr->chunk_name, png_tIME, 4))
   {
      if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@@ -516,7 +515,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
   }

 #endif
-#if defined(PNG_READ_tEXt_SUPPORTED)
+#ifdef PNG_READ_tEXt_SUPPORTED
   else if (!png_memcmp(png_ptr->chunk_name, png_tEXt, 4))
   {
      if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@@ -529,7 +528,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
   }

 #endif
-#if defined(PNG_READ_zTXt_SUPPORTED)
+#ifdef PNG_READ_zTXt_SUPPORTED
   else if (!png_memcmp(png_ptr->chunk_name, png_zTXt, 4))
   {
      if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@@ -542,7 +541,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
   }

 #endif
-#if defined(PNG_READ_iTXt_SUPPORTED)
+#ifdef PNG_READ_iTXt_SUPPORTED
   else if (!png_memcmp(png_ptr->chunk_name, png_iTXt, 4))
   {
      if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@@ -728,9 +727,7 @@ png_push_restore_buffer(png_structp png_ptr, png_bytep buffer,
 void /* PRIVATE */
 png_push_read_IDAT(png_structp png_ptr)
 {
-#ifdef PNG_USE_LOCAL_ARRAYS
-   PNG_CONST PNG_IDAT;
-#endif
+   PNG_IDAT;
   if (!(png_ptr->mode & PNG_HAVE_CHUNK_HEADER))
   {
      png_byte chunk_length[4];
@@ -859,7 +856,7 @@ png_process_IDAT_data(png_structp png_ptr, png_bytep buffer,
      if (!(png_ptr->zstream.avail_out))
      {
         if ((
-#if defined(PNG_READ_INTERLACING_SUPPORTED)
+#ifdef PNG_READ_INTERLACING_SUPPORTED
             png_ptr->interlaced && png_ptr->pass > 6) ||
             (!png_ptr->interlaced &&
 #endif
@@ -901,7 +898,7 @@ png_push_process_row(png_structp png_ptr)
   if (png_ptr->transformations || (png_ptr->flags&PNG_FLAG_STRIP_ALPHA))
      png_do_read_transformations(png_ptr);

-#if defined(PNG_READ_INTERLACING_SUPPORTED)
+#ifdef PNG_READ_INTERLACING_SUPPORTED
   /* Blow up interlaced rows to full size */
   if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE))
   {
@@ -1088,7 +1085,6 @@ png_push_process_row(png_structp png_ptr)
 void /* PRIVATE */
 png_read_push_finish_row(png_structp png_ptr)
 {
-#ifdef PNG_USE_LOCAL_ARRAYS
   /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */

   /* Start of interlace block */
@@ -1107,13 +1103,12 @@ png_read_push_finish_row(png_structp png_ptr)
    * it, uncomment it here and in png.h
   PNG_CONST int FARDATA png_pass_height[] = {8, 8, 4, 4, 2, 2, 1};
   */
-#endif

   png_ptr->row_number++;
   if (png_ptr->row_number < png_ptr->num_rows)
      return;

-#if defined(PNG_READ_INTERLACING_SUPPORTED)
+#ifdef PNG_READ_INTERLACING_SUPPORTED
   if (png_ptr->interlaced)
   {
      png_ptr->row_number = 0;
@@ -1154,7 +1149,7 @@ png_read_push_finish_row(png_structp png_ptr)
 #endif /* PNG_READ_INTERLACING_SUPPORTED */
 }

-#if defined(PNG_READ_tEXt_SUPPORTED)
+#ifdef PNG_READ_tEXt_SUPPORTED
 void /* PRIVATE */
 png_push_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32
   length)
@@ -1217,7 +1212,7 @@ png_push_read_tEXt(png_structp png_ptr, png_infop info_ptr)

      png_push_crc_finish(png_ptr);

-#if defined(PNG_MAX_MALLOC_64K)
+#ifdef PNG_MAX_MALLOC_64K
      if (png_ptr->skip_length)
         return;
 #endif
@@ -1252,7 +1247,7 @@ png_push_read_tEXt(png_structp png_ptr, png_infop info_ptr)
 }
 #endif

-#if defined(PNG_READ_zTXt_SUPPORTED)
+#ifdef PNG_READ_zTXt_SUPPORTED
 void /* PRIVATE */
 png_push_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32
   length)
@@ -1453,7 +1448,7 @@ png_push_read_zTXt(png_structp png_ptr, png_infop info_ptr)
 }
 #endif

-#if defined(PNG_READ_iTXt_SUPPORTED)
+#ifdef PNG_READ_iTXt_SUPPORTED
 void /* PRIVATE */
 png_push_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32
   length)
@@ -1520,7 +1515,7 @@ png_push_read_iTXt(png_structp png_ptr, png_infop info_ptr)

      png_push_crc_finish(png_ptr);

-#if defined(PNG_MAX_MALLOC_64K)
+#ifdef PNG_MAX_MALLOC_64K
      if (png_ptr->skip_length)
         return;
 #endif
@@ -1586,10 +1581,10 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32

   if (!(png_ptr->chunk_name[0] & 0x20))
   {
-#if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
+#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
      if (png_handle_as_unknown(png_ptr, png_ptr->chunk_name) !=
         PNG_HANDLE_CHUNK_ALWAYS
-#if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
+#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
         && png_ptr->read_user_chunk_fn == NULL
 #endif
         )
@@ -1599,7 +1594,7 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32
      info_ptr = info_ptr; /* To quiet some compiler warnings */
   }

-#if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
+#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
   if (png_ptr->flags & PNG_FLAG_KEEP_UNKNOWN_CHUNKS)
   {
 #ifdef PNG_MAX_MALLOC_64K
@@ -1628,7 +1623,7 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32
         png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length);
      }

-#if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
+#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
      if (png_ptr->read_user_chunk_fn != NULL)
      {
         /* Callback to user unknown chunk handler */
@@ -1689,10 +1684,9 @@ void PNGAPI
 png_progressive_combine_row (png_structp png_ptr,
   png_bytep old_row, png_bytep new_row)
 {
-#ifdef PNG_USE_LOCAL_ARRAYS
   PNG_CONST int FARDATA png_pass_dsp_mask[7] =
      {0xff, 0x0f, 0xff, 0x33, 0xff, 0x55, 0xff};
-#endif
+
   if (png_ptr == NULL)
      return;

--- a/pngpriv.h
+++ b/pngpriv.h
@@ -1,7 +1,7 @@

 /* pngpriv.h - private declarations for use inside libpng
 *
- * libpng version 1.4.0beta66 - June 27, 2009
+ * libpng version 1.4.0beta104 - November 22, 2009
 * For conditions of distribution and use, see copyright notice in png.h
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -41,8 +41,8 @@
 * them inside an appropriate ifdef/endif pair for portability.
 */

-#if defined(PNG_FLOATING_POINT_SUPPORTED)
-#  if defined(MACOS)
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+#  ifdef MACOS
     /* We need to check that <math.h> hasn't already been included earlier
      * as it seems it doesn't agree with <fp.h>, yet we should really use
      * <fp.h> if possible.
@@ -73,10 +73,10 @@
 #endif

 #if defined(WIN32) || defined(_Windows) || defined(_WINDOWS) || \
-	defined(_WIN32) || defined(__WIN32__)
+    defined(_WIN32) || defined(__WIN32__)
 #  include <windows.h>  /* defines _WINDOWS_ macro */
 /* I have no idea why is this necessary... */
-#  if defined(_MSC_VER)
+#  ifdef _MSC_VER
 #    include <malloc.h>
 #  endif
 #endif
@@ -157,9 +157,9 @@
 #define PNG_FLAG_CRC_ANCILLARY_NOWARN     0x0200
 #define PNG_FLAG_CRC_CRITICAL_USE         0x0400
 #define PNG_FLAG_CRC_CRITICAL_IGNORE      0x0800
-#define PNG_FLAG_FREE_PLTE                0x1000
-#define PNG_FLAG_FREE_TRNS                0x2000
-#define PNG_FLAG_FREE_HIST                0x4000
+                                /*        0x1000  unused */
+                                /*        0x2000  unused */
+                                /*        0x4000  unused */
 #define PNG_FLAG_KEEP_UNKNOWN_CHUNKS      0x8000L
 #define PNG_FLAG_KEEP_UNSAFE_CHUNKS       0x10000L
 #define PNG_FLAG_LIBRARY_MISMATCH         0x20000L
@@ -199,74 +199,40 @@
    (( ((png_size_t)(width) * ((png_size_t)(pixel_bits))) + 7) >> 3) )

 /* PNG_OUT_OF_RANGE returns true if value is outside the range
-   ideal-delta..ideal+delta.  Each argument is evaluated twice.
-   "ideal" and "delta" should be constants, normally simple
-   integers, "value" a variable. Added to libpng-1.2.6 JB */
+ * ideal-delta..ideal+delta.  Each argument is evaluated twice.
+ * "ideal" and "delta" should be constants, normally simple
+ * integers, "value" a variable. Added to libpng-1.2.6 JB
+ */
 #define PNG_OUT_OF_RANGE(value, ideal, delta) \
        ( (value) < (ideal)-(delta) || (value) > (ideal)+(delta) )

-/* Variables declared in png.c - only it needs to define PNG_NO_EXTERN */
-#if !defined(PNG_NO_EXTERN) || defined(PNG_ALWAYS_EXTERN)
-/* Place to hold the signature string for a PNG file. */
-#ifdef PNG_USE_GLOBAL_ARRAYS
-   PNG_EXPORT_VAR (const png_byte FARDATA) png_sig[8];
-#else
-#if 0
-#define png_sig png_sig_bytes(NULL)
-#endif
-#endif
-#endif /* PNG_NO_EXTERN */
-
 /* Constant strings for known chunk types.  If you need to add a chunk,
- * define the name here, and add an invocation of the macro in png.c and
- * wherever it's needed.
+ * define the name here, and add an invocation of the macro wherever it's
+ * needed.
 */
-#define PNG_IHDR const png_byte png_IHDR[5] = { 73,  72,  68,  82, '\0'}
-#define PNG_IDAT const png_byte png_IDAT[5] = { 73,  68,  65,  84, '\0'}
-#define PNG_IEND const png_byte png_IEND[5] = { 73,  69,  78,  68, '\0'}
-#define PNG_PLTE const png_byte png_PLTE[5] = { 80,  76,  84,  69, '\0'}
-#define PNG_bKGD const png_byte png_bKGD[5] = { 98,  75,  71,  68, '\0'}
-#define PNG_cHRM const png_byte png_cHRM[5] = { 99,  72,  82,  77, '\0'}
-#define PNG_gAMA const png_byte png_gAMA[5] = {103,  65,  77,  65, '\0'}
-#define PNG_hIST const png_byte png_hIST[5] = {104,  73,  83,  84, '\0'}
-#define PNG_iCCP const png_byte png_iCCP[5] = {105,  67,  67,  80, '\0'}
-#define PNG_iTXt const png_byte png_iTXt[5] = {105,  84,  88, 116, '\0'}
-#define PNG_oFFs const png_byte png_oFFs[5] = {111,  70,  70, 115, '\0'}
-#define PNG_pCAL const png_byte png_pCAL[5] = {112,  67,  65,  76, '\0'}
-#define PNG_sCAL const png_byte png_sCAL[5] = {115,  67,  65,  76, '\0'}
-#define PNG_pHYs const png_byte png_pHYs[5] = {112,  72,  89, 115, '\0'}
-#define PNG_sBIT const png_byte png_sBIT[5] = {115,  66,  73,  84, '\0'}
-#define PNG_sPLT const png_byte png_sPLT[5] = {115,  80,  76,  84, '\0'}
-#define PNG_sRGB const png_byte png_sRGB[5] = {115,  82,  71,  66, '\0'}
-#define PNG_sTER const png_byte png_sTER[5] = {115,  84,  69,  82, '\0'}
-#define PNG_tEXt const png_byte png_tEXt[5] = {116,  69,  88, 116, '\0'}
-#define PNG_tIME const png_byte png_tIME[5] = {116,  73,  77,  69, '\0'}
-#define PNG_tRNS const png_byte png_tRNS[5] = {116,  82,  78,  83, '\0'}
-#define PNG_zTXt const png_byte png_zTXt[5] = {122,  84,  88, 116, '\0'}
+#define PNG_IHDR PNG_CONST png_byte png_IHDR[5] = { 73,  72,  68,  82, '\0'}
+#define PNG_IDAT PNG_CONST png_byte png_IDAT[5] = { 73,  68,  65,  84, '\0'}
+#define PNG_IEND PNG_CONST png_byte png_IEND[5] = { 73,  69,  78,  68, '\0'}
+#define PNG_PLTE PNG_CONST png_byte png_PLTE[5] = { 80,  76,  84,  69, '\0'}
+#define PNG_bKGD PNG_CONST png_byte png_bKGD[5] = { 98,  75,  71,  68, '\0'}
+#define PNG_cHRM PNG_CONST png_byte png_cHRM[5] = { 99,  72,  82,  77, '\0'}
+#define PNG_gAMA PNG_CONST png_byte png_gAMA[5] = {103,  65,  77,  65, '\0'}
+#define PNG_hIST PNG_CONST png_byte png_hIST[5] = {104,  73,  83,  84, '\0'}
+#define PNG_iCCP PNG_CONST png_byte png_iCCP[5] = {105,  67,  67,  80, '\0'}
+#define PNG_iTXt PNG_CONST png_byte png_iTXt[5] = {105,  84,  88, 116, '\0'}
+#define PNG_oFFs PNG_CONST png_byte png_oFFs[5] = {111,  70,  70, 115, '\0'}
+#define PNG_pCAL PNG_CONST png_byte png_pCAL[5] = {112,  67,  65,  76, '\0'}
+#define PNG_sCAL PNG_CONST png_byte png_sCAL[5] = {115,  67,  65,  76, '\0'}
+#define PNG_pHYs PNG_CONST png_byte png_pHYs[5] = {112,  72,  89, 115, '\0'}
+#define PNG_sBIT PNG_CONST png_byte png_sBIT[5] = {115,  66,  73,  84, '\0'}
+#define PNG_sPLT PNG_CONST png_byte png_sPLT[5] = {115,  80,  76,  84, '\0'}
+#define PNG_sRGB PNG_CONST png_byte png_sRGB[5] = {115,  82,  71,  66, '\0'}
+#define PNG_sTER PNG_CONST png_byte png_sTER[5] = {115,  84,  69,  82, '\0'}
+#define PNG_tEXt PNG_CONST png_byte png_tEXt[5] = {116,  69,  88, 116, '\0'}
+#define PNG_tIME PNG_CONST png_byte png_tIME[5] = {116,  73,  77,  69, '\0'}
+#define PNG_tRNS PNG_CONST png_byte png_tRNS[5] = {116,  82,  78,  83, '\0'}
+#define PNG_zTXt PNG_CONST png_byte png_zTXt[5] = {122,  84,  88, 116, '\0'}

-#ifdef PNG_USE_GLOBAL_ARRAYS
-PNG_EXPORT_VAR (const png_byte FARDATA) png_IHDR[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_IDAT[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_IEND[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_PLTE[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_bKGD[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_cHRM[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_gAMA[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_hIST[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_iCCP[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_iTXt[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_oFFs[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_pCAL[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_sCAL[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_pHYs[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_sBIT[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_sPLT[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_sRGB[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_tEXt[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_tIME[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_tRNS[5];
-PNG_EXPORT_VAR (const png_byte FARDATA) png_zTXt[5];
-#endif /* PNG_USE_GLOBAL_ARRAYS */

 /* Inhibit C++ name-mangling for libpng functions but not for system calls. */
 #ifdef __cplusplus
@@ -314,8 +280,8 @@ PNG_EXTERN void PNGAPI png_push_fill_buffer PNGARG((png_structp png_ptr,
 PNG_EXTERN void PNGAPI png_default_write_data PNGARG((png_structp png_ptr,
   png_bytep data, png_size_t length));

-#if defined(PNG_WRITE_FLUSH_SUPPORTED)
-#if !defined(PNG_NO_STDIO)
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
+#ifdef PNG_STDIO_SUPPORTED
 PNG_EXTERN void PNGAPI png_default_flush PNGARG((png_structp png_ptr));
 #endif
 #endif
@@ -359,7 +325,7 @@ PNG_EXTERN int png_crc_error PNGARG((png_structp png_ptr));
 PNG_EXTERN void png_calculate_crc PNGARG((png_structp png_ptr, png_bytep ptr,
   png_size_t length));

-#if defined(PNG_WRITE_FLUSH_SUPPORTED)
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
 PNG_EXTERN void png_flush PNGARG((png_structp png_ptr));
 #endif

@@ -381,7 +347,7 @@ PNG_EXTERN void png_write_IDAT PNGARG((png_structp png_ptr, png_bytep data,

 PNG_EXTERN void png_write_IEND PNGARG((png_structp png_ptr));

-#if defined(PNG_WRITE_gAMA_SUPPORTED)
+#ifdef PNG_WRITE_gAMA_SUPPORTED
 #ifdef PNG_FLOATING_POINT_SUPPORTED
 PNG_EXTERN void png_write_gAMA PNGARG((png_structp png_ptr, double file_gamma));
 #endif
@@ -391,12 +357,12 @@ PNG_EXTERN void png_write_gAMA_fixed PNGARG((png_structp png_ptr, png_fixed_poin
 #endif
 #endif

-#if defined(PNG_WRITE_sBIT_SUPPORTED)
+#ifdef PNG_WRITE_sBIT_SUPPORTED
 PNG_EXTERN void png_write_sBIT PNGARG((png_structp png_ptr, png_color_8p sbit,
   int color_type));
 #endif

-#if defined(PNG_WRITE_cHRM_SUPPORTED)
+#ifdef PNG_WRITE_cHRM_SUPPORTED
 #ifdef PNG_FLOATING_POINT_SUPPORTED
 PNG_EXTERN void png_write_cHRM PNGARG((png_structp png_ptr,
   double white_x, double white_y,
@@ -410,34 +376,34 @@ PNG_EXTERN void png_write_cHRM_fixed PNGARG((png_structp png_ptr,
   png_fixed_point int_blue_y));
 #endif

-#if defined(PNG_WRITE_sRGB_SUPPORTED)
+#ifdef PNG_WRITE_sRGB_SUPPORTED
 PNG_EXTERN void png_write_sRGB PNGARG((png_structp png_ptr,
   int intent));
 #endif

-#if defined(PNG_WRITE_iCCP_SUPPORTED)
+#ifdef PNG_WRITE_iCCP_SUPPORTED
 PNG_EXTERN void png_write_iCCP PNGARG((png_structp png_ptr,
   png_charp name, int compression_type,
   png_charp profile, int proflen));
   /* Note to maintainer: profile should be png_bytep */
 #endif

-#if defined(PNG_WRITE_sPLT_SUPPORTED)
+#ifdef PNG_WRITE_sPLT_SUPPORTED
 PNG_EXTERN void png_write_sPLT PNGARG((png_structp png_ptr,
   png_sPLT_tp palette));
 #endif

-#if defined(PNG_WRITE_tRNS_SUPPORTED)
+#ifdef PNG_WRITE_tRNS_SUPPORTED
 PNG_EXTERN void png_write_tRNS PNGARG((png_structp png_ptr, png_bytep trans,
   png_color_16p values, int number, int color_type));
 #endif

-#if defined(PNG_WRITE_bKGD_SUPPORTED)
+#ifdef PNG_WRITE_bKGD_SUPPORTED
 PNG_EXTERN void png_write_bKGD PNGARG((png_structp png_ptr,
   png_color_16p values, int color_type));
 #endif

-#if defined(PNG_WRITE_hIST_SUPPORTED)
+#ifdef PNG_WRITE_hIST_SUPPORTED
 PNG_EXTERN void png_write_hIST PNGARG((png_structp png_ptr, png_uint_16p hist,
   int num_hist));
 #endif
@@ -448,51 +414,51 @@ PNG_EXTERN png_size_t png_check_keyword PNGARG((png_structp png_ptr,
   png_charp key, png_charpp new_key));
 #endif

-#if defined(PNG_WRITE_tEXt_SUPPORTED)
+#ifdef PNG_WRITE_tEXt_SUPPORTED
 PNG_EXTERN void png_write_tEXt PNGARG((png_structp png_ptr, png_charp key,
   png_charp text, png_size_t text_len));
 #endif

-#if defined(PNG_WRITE_zTXt_SUPPORTED)
+#ifdef PNG_WRITE_zTXt_SUPPORTED
 PNG_EXTERN void png_write_zTXt PNGARG((png_structp png_ptr, png_charp key,
   png_charp text, png_size_t text_len, int compression));
 #endif

-#if defined(PNG_WRITE_iTXt_SUPPORTED)
+#ifdef PNG_WRITE_iTXt_SUPPORTED
 PNG_EXTERN void png_write_iTXt PNGARG((png_structp png_ptr,
   int compression, png_charp key, png_charp lang, png_charp lang_key,
   png_charp text));
 #endif

-#if defined(PNG_TEXT_SUPPORTED)  /* Added at version 1.0.14 and 1.2.4 */
+#ifdef PNG_TEXT_SUPPORTED  /* Added at version 1.0.14 and 1.2.4 */
 PNG_EXTERN int png_set_text_2 PNGARG((png_structp png_ptr,
   png_infop info_ptr, png_textp text_ptr, int num_text));
 #endif

-#if defined(PNG_WRITE_oFFs_SUPPORTED)
+#ifdef PNG_WRITE_oFFs_SUPPORTED
 PNG_EXTERN void png_write_oFFs PNGARG((png_structp png_ptr,
   png_int_32 x_offset, png_int_32 y_offset, int unit_type));
 #endif

-#if defined(PNG_WRITE_pCAL_SUPPORTED)
+#ifdef PNG_WRITE_pCAL_SUPPORTED
 PNG_EXTERN void png_write_pCAL PNGARG((png_structp png_ptr, png_charp purpose,
   png_int_32 X0, png_int_32 X1, int type, int nparams,
   png_charp units, png_charpp params));
 #endif

-#if defined(PNG_WRITE_pHYs_SUPPORTED)
+#ifdef PNG_WRITE_pHYs_SUPPORTED
 PNG_EXTERN void png_write_pHYs PNGARG((png_structp png_ptr,
   png_uint_32 x_pixels_per_unit, png_uint_32 y_pixels_per_unit,
   int unit_type));
 #endif

-#if defined(PNG_WRITE_tIME_SUPPORTED)
+#ifdef PNG_WRITE_tIME_SUPPORTED
 PNG_EXTERN void png_write_tIME PNGARG((png_structp png_ptr,
   png_timep mod_time));
 #endif

-#if defined(PNG_WRITE_sCAL_SUPPORTED)
-#if defined(PNG_FLOATING_POINT_SUPPORTED) && !defined(PNG_NO_STDIO)
+#ifdef PNG_WRITE_sCAL_SUPPORTED
+#if defined(PNG_FLOATING_POINT_SUPPORTED) && defined(PNG_STDIO_SUPPORTED)
 PNG_EXTERN void png_write_sCAL PNGARG((png_structp png_ptr,
   int unit, double width, double height));
 #else
@@ -509,7 +475,7 @@ PNG_EXTERN void png_write_finish_row PNGARG((png_structp png_ptr));
 /* Internal use only.   Called before first row of data */
 PNG_EXTERN void png_write_start_row PNGARG((png_structp png_ptr));

-#if defined(PNG_READ_GAMMA_SUPPORTED)
+#ifdef PNG_READ_GAMMA_SUPPORTED
 PNG_EXTERN void png_build_gamma_table PNGARG((png_structp png_ptr));
 #endif

@@ -517,7 +483,7 @@ PNG_EXTERN void png_build_gamma_table PNGARG((png_structp png_ptr));
 PNG_EXTERN void png_combine_row PNGARG((png_structp png_ptr, png_bytep row,
   int mask));

-#if defined(PNG_READ_INTERLACING_SUPPORTED)
+#ifdef PNG_READ_INTERLACING_SUPPORTED
 /* Expand an interlaced row */
 /* OLD pre-1.0.9 interface:
 PNG_EXTERN void png_do_read_interlace PNGARG((png_row_infop row_info,
@@ -528,7 +494,7 @@ PNG_EXTERN void png_do_read_interlace PNGARG((png_structp png_ptr));

 /* GRR TO DO (2.0 or whenever):  simplify other internal calling interfaces */

-#if defined(PNG_WRITE_INTERLACING_SUPPORTED)
+#ifdef PNG_WRITE_INTERLACING_SUPPORTED
 /* Grab pixels out of a row for an interlaced pass */
 PNG_EXTERN void png_do_write_interlace PNGARG((png_row_infop row_info,
   png_bytep row, int pass));
@@ -555,27 +521,27 @@ PNG_EXTERN void png_read_transform_info PNGARG((png_structp png_ptr,
   png_infop info_ptr));

 /* These are the functions that do the transformations */
-#if defined(PNG_READ_FILLER_SUPPORTED)
+#ifdef PNG_READ_FILLER_SUPPORTED
 PNG_EXTERN void png_do_read_filler PNGARG((png_row_infop row_info,
   png_bytep row, png_uint_32 filler, png_uint_32 flags));
 #endif

-#if defined(PNG_READ_SWAP_ALPHA_SUPPORTED)
+#ifdef PNG_READ_SWAP_ALPHA_SUPPORTED
 PNG_EXTERN void png_do_read_swap_alpha PNGARG((png_row_infop row_info,
   png_bytep row));
 #endif

-#if defined(PNG_WRITE_SWAP_ALPHA_SUPPORTED)
+#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED
 PNG_EXTERN void png_do_write_swap_alpha PNGARG((png_row_infop row_info,
   png_bytep row));
 #endif

-#if defined(PNG_READ_INVERT_ALPHA_SUPPORTED)
+#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED
 PNG_EXTERN void png_do_read_invert_alpha PNGARG((png_row_infop row_info,
   png_bytep row));
 #endif

-#if defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED)
+#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
 PNG_EXTERN void png_do_write_invert_alpha PNGARG((png_row_infop row_info,
   png_bytep row));
 #endif
@@ -586,7 +552,7 @@ PNG_EXTERN void png_do_strip_filler PNGARG((png_row_infop row_info,
   png_bytep row, png_uint_32 flags));
 #endif

-#if defined(PNG_READ_PREMULTIPLY_ALPHA_SUPPORTED)
+#ifdef PNG_READ_PREMULTIPLY_ALPHA_SUPPORTED
 PNG_EXTERN void png_do_read_premultiply_alpha
   PNGARG((png_row_infop row_info, png_bytep row));
 #endif
@@ -599,21 +565,21 @@ PNG_EXTERN void png_do_swap PNGARG((png_row_infop row_info, png_bytep row));
 PNG_EXTERN void png_do_packswap PNGARG((png_row_infop row_info, png_bytep row));
 #endif

-#if defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
 PNG_EXTERN int png_do_rgb_to_gray PNGARG((png_structp png_ptr, png_row_infop
   row_info, png_bytep row));
 #endif

-#if defined(PNG_READ_GRAY_TO_RGB_SUPPORTED)
+#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
 PNG_EXTERN void png_do_gray_to_rgb PNGARG((png_row_infop row_info,
   png_bytep row));
 #endif

-#if defined(PNG_READ_PACK_SUPPORTED)
+#ifdef PNG_READ_PACK_SUPPORTED
 PNG_EXTERN void png_do_unpack PNGARG((png_row_infop row_info, png_bytep row));
 #endif

-#if defined(PNG_READ_SHIFT_SUPPORTED)
+#ifdef PNG_READ_SHIFT_SUPPORTED
 PNG_EXTERN void png_do_unshift PNGARG((png_row_infop row_info, png_bytep row,
   png_color_8p sig_bits));
 #endif
@@ -622,15 +588,15 @@ PNG_EXTERN void png_do_unshift PNGARG((png_row_infop row_info, png_bytep row,
 PNG_EXTERN void png_do_invert PNGARG((png_row_infop row_info, png_bytep row));
 #endif

-#if defined(PNG_READ_16_TO_8_SUPPORTED)
+#ifdef PNG_READ_16_TO_8_SUPPORTED
 PNG_EXTERN void png_do_chop PNGARG((png_row_infop row_info, png_bytep row));
 #endif

-#if defined(PNG_READ_DITHER_SUPPORTED)
+#ifdef PNG_READ_DITHER_SUPPORTED
 PNG_EXTERN void png_do_dither PNGARG((png_row_infop row_info,
   png_bytep row, png_bytep palette_lookup, png_bytep dither_lookup));

-#  if defined(PNG_CORRECT_PALETTE_SUPPORTED)
+#  ifdef PNG_CORRECT_PALETTE_SUPPORTED
 PNG_EXTERN void png_correct_palette PNGARG((png_structp png_ptr,
   png_colorp palette, int num_palette));
 #  endif
@@ -640,18 +606,18 @@ PNG_EXTERN void png_correct_palette PNGARG((png_structp png_ptr,
 PNG_EXTERN void png_do_bgr PNGARG((png_row_infop row_info, png_bytep row));
 #endif

-#if defined(PNG_WRITE_PACK_SUPPORTED)
+#ifdef PNG_WRITE_PACK_SUPPORTED
 PNG_EXTERN void png_do_pack PNGARG((png_row_infop row_info,
   png_bytep row, png_uint_32 bit_depth));
 #endif

-#if defined(PNG_WRITE_SHIFT_SUPPORTED)
+#ifdef PNG_WRITE_SHIFT_SUPPORTED
 PNG_EXTERN void png_do_shift PNGARG((png_row_infop row_info, png_bytep row,
   png_color_8p bit_depth));
 #endif

-#if defined(PNG_READ_BACKGROUND_SUPPORTED)
-#if defined(PNG_READ_GAMMA_SUPPORTED)
+#ifdef PNG_READ_BACKGROUND_SUPPORTED
+#ifdef PNG_READ_GAMMA_SUPPORTED
 PNG_EXTERN void png_do_background PNGARG((png_row_infop row_info, png_bytep row,
   png_color_16p trans_color, png_color_16p background,
   png_color_16p background_1,
@@ -664,13 +630,13 @@ PNG_EXTERN void png_do_background PNGARG((png_row_infop row_info, png_bytep row,
 #endif
 #endif

-#if defined(PNG_READ_GAMMA_SUPPORTED)
+#ifdef PNG_READ_GAMMA_SUPPORTED
 PNG_EXTERN void png_do_gamma PNGARG((png_row_infop row_info, png_bytep row,
   png_bytep gamma_table, png_uint_16pp gamma_16_table,
   int gamma_shift));
 #endif

-#if defined(PNG_READ_EXPAND_SUPPORTED)
+#ifdef PNG_READ_EXPAND_SUPPORTED
 PNG_EXTERN void png_do_expand_palette PNGARG((png_row_infop row_info,
   png_bytep row, png_colorp palette, png_bytep trans, int num_trans));
 PNG_EXTERN void png_do_expand PNGARG((png_row_infop row_info,
@@ -689,87 +655,87 @@ PNG_EXTERN void png_handle_PLTE PNGARG((png_structp png_ptr, png_infop info_ptr,
 PNG_EXTERN void png_handle_IEND PNGARG((png_structp png_ptr, png_infop info_ptr,
   png_uint_32 length));

-#if defined(PNG_READ_bKGD_SUPPORTED)
+#ifdef PNG_READ_bKGD_SUPPORTED
 PNG_EXTERN void png_handle_bKGD PNGARG((png_structp png_ptr, png_infop info_ptr,
   png_uint_32 length));
 #endif

-#if defined(PNG_READ_cHRM_SUPPORTED)
+#ifdef PNG_READ_cHRM_SUPPORTED
 PNG_EXTERN void png_handle_cHRM PNGARG((png_structp png_ptr, png_infop info_ptr,
   png_uint_32 length));
 #endif

-#if defined(PNG_READ_gAMA_SUPPORTED)
+#ifdef PNG_READ_gAMA_SUPPORTED
 PNG_EXTERN void png_handle_gAMA PNGARG((png_structp png_ptr, png_infop info_ptr,
   png_uint_32 length));
 #endif

-#if defined(PNG_READ_hIST_SUPPORTED)
+#ifdef PNG_READ_hIST_SUPPORTED
 PNG_EXTERN void png_handle_hIST PNGARG((png_structp png_ptr, png_infop info_ptr,
   png_uint_32 length));
 #endif

-#if defined(PNG_READ_iCCP_SUPPORTED)
+#ifdef PNG_READ_iCCP_SUPPORTED
 extern void png_handle_iCCP PNGARG((png_structp png_ptr, png_infop info_ptr,
   png_uint_32 length));
 #endif /* PNG_READ_iCCP_SUPPORTED */

-#if defined(PNG_READ_iTXt_SUPPORTED)
+#ifdef PNG_READ_iTXt_SUPPORTED
 PNG_EXTERN void png_handle_iTXt PNGARG((png_structp png_ptr, png_infop info_ptr,
   png_uint_32 length));
 #endif

-#if defined(PNG_READ_oFFs_SUPPORTED)
+#ifdef PNG_READ_oFFs_SUPPORTED
 PNG_EXTERN void png_handle_oFFs PNGARG((png_structp png_ptr, png_infop info_ptr,
   png_uint_32 length));
 #endif

-#if defined(PNG_READ_pCAL_SUPPORTED)
+#ifdef PNG_READ_pCAL_SUPPORTED
 PNG_EXTERN void png_handle_pCAL PNGARG((png_structp png_ptr, png_infop info_ptr,
   png_uint_32 length));
 #endif

-#if defined(PNG_READ_pHYs_SUPPORTED)
+#ifdef PNG_READ_pHYs_SUPPORTED
 PNG_EXTERN void png_handle_pHYs PNGARG((png_structp png_ptr, png_infop info_ptr,
   png_uint_32 length));
 #endif

-#if defined(PNG_READ_sBIT_SUPPORTED)
+#ifdef PNG_READ_sBIT_SUPPORTED
 PNG_EXTERN void png_handle_sBIT PNGARG((png_structp png_ptr, png_infop info_ptr,
   png_uint_32 length));
 #endif

-#if defined(PNG_READ_sCAL_SUPPORTED)
+#ifdef PNG_READ_sCAL_SUPPORTED
 PNG_EXTERN void png_handle_sCAL PNGARG((png_structp png_ptr, png_infop info_ptr,
   png_uint_32 length));
 #endif

-#if defined(PNG_READ_sPLT_SUPPORTED)
+#ifdef PNG_READ_sPLT_SUPPORTED
 extern void png_handle_sPLT PNGARG((png_structp png_ptr, png_infop info_ptr,
   png_uint_32 length));
 #endif /* PNG_READ_sPLT_SUPPORTED */

-#if defined(PNG_READ_sRGB_SUPPORTED)
+#ifdef PNG_READ_sRGB_SUPPORTED
 PNG_EXTERN void png_handle_sRGB PNGARG((png_structp png_ptr, png_infop info_ptr,
   png_uint_32 length));
 #endif

-#if defined(PNG_READ_tEXt_SUPPORTED)
+#ifdef PNG_READ_tEXt_SUPPORTED
 PNG_EXTERN void png_handle_tEXt PNGARG((png_structp png_ptr, png_infop info_ptr,
   png_uint_32 length));
 #endif

-#if defined(PNG_READ_tIME_SUPPORTED)
+#ifdef PNG_READ_tIME_SUPPORTED
 PNG_EXTERN void png_handle_tIME PNGARG((png_structp png_ptr, png_infop info_ptr,
   png_uint_32 length));
 #endif

-#if defined(PNG_READ_tRNS_SUPPORTED)
+#ifdef PNG_READ_tRNS_SUPPORTED
 PNG_EXTERN void png_handle_tRNS PNGARG((png_structp png_ptr, png_infop info_ptr,
   png_uint_32 length));
 #endif

-#if defined(PNG_READ_zTXt_SUPPORTED)
+#ifdef PNG_READ_zTXt_SUPPORTED
 PNG_EXTERN void png_handle_zTXt PNGARG((png_structp png_ptr, png_infop info_ptr,
   png_uint_32 length));
 #endif
@@ -814,19 +780,19 @@ PNG_EXTERN void png_push_read_end PNGARG((png_structp png_ptr,
 PNG_EXTERN void png_process_some_data PNGARG((png_structp png_ptr,
   png_infop info_ptr));
 PNG_EXTERN void png_read_push_finish_row PNGARG((png_structp png_ptr));
-#if defined(PNG_READ_tEXt_SUPPORTED)
+#ifdef PNG_READ_tEXt_SUPPORTED
 PNG_EXTERN void png_push_handle_tEXt PNGARG((png_structp png_ptr,
   png_infop info_ptr, png_uint_32 length));
 PNG_EXTERN void png_push_read_tEXt PNGARG((png_structp png_ptr,
   png_infop info_ptr));
 #endif
-#if defined(PNG_READ_zTXt_SUPPORTED)
+#ifdef PNG_READ_zTXt_SUPPORTED
 PNG_EXTERN void png_push_handle_zTXt PNGARG((png_structp png_ptr,
   png_infop info_ptr, png_uint_32 length));
 PNG_EXTERN void png_push_read_zTXt PNGARG((png_structp png_ptr,
   png_infop info_ptr));
 #endif
-#if defined(PNG_READ_iTXt_SUPPORTED)
+#ifdef PNG_READ_iTXt_SUPPORTED
 PNG_EXTERN void png_push_handle_iTXt PNGARG((png_structp png_ptr,
   png_infop info_ptr, png_uint_32 length));
 PNG_EXTERN void png_push_read_iTXt PNGARG((png_structp png_ptr,
@@ -843,14 +809,151 @@ PNG_EXTERN void png_do_write_intrapixel PNGARG((png_row_infop row_info,
 #endif

 /* Added at libpng version 1.4.0 */
-#if defined(PNG_cHRM_SUPPORTED)
-PNG_EXTERN int png_check_cHRM_fixed  PNGARG((png_structp png_ptr,
+#ifdef PNG_cHRM_SUPPORTED
+PNG_EXTERN int png_check_cHRM_fixed PNGARG((png_structp png_ptr,
   png_fixed_point int_white_x, png_fixed_point int_white_y,
   png_fixed_point int_red_x, png_fixed_point int_red_y, png_fixed_point
   int_green_x, png_fixed_point int_green_y, png_fixed_point int_blue_x,
   png_fixed_point int_blue_y));
 #endif

+#ifdef PNG_cHRM_SUPPORTED
+#ifdef PNG_CHECK_cHRM_SUPPORTED
+/* Added at libpng version 1.2.34 and 1.4.0 */
+PNG_EXTERN void png_64bit_product PNGARG((long v1, long v2,
+   unsigned long *hi_product, unsigned long *lo_product));
+#endif
+#endif
+
+/* Added at libpng version 1.4.0 */
+PNG_EXTERN void png_check_IHDR PNGARG((png_structp png_ptr,
+   png_uint_32 width, png_uint_32 height, int bit_depth,
+   int color_type, int interlace_type, int compression_type,
+   int filter_type));
+
+/* Free all memory used by the read (old method - NOT DLL EXPORTED) */
+extern void png_read_destroy PNGARG((png_structp png_ptr, png_infop info_ptr,
+   png_infop end_info_ptr));
+
+/* Free any memory used in png_ptr struct (old method - NOT DLL EXPORTED) */
+extern void png_write_destroy PNGARG((png_structp png_ptr));
+
+#ifdef USE_FAR_KEYWORD  /* memory model conversion function */
+extern void *png_far_to_near PNGARG((png_structp png_ptr,png_voidp ptr,
+   int check));
+#endif /* USE_FAR_KEYWORD */
+
+/* Define PNG_DEBUG at compile time for debugging information.  Higher
+ * numbers for PNG_DEBUG mean more debugging information.  This has
+ * only been added since version 0.95 so it is not implemented throughout
+ * libpng yet, but more support will be added as needed.
+ */
+#ifdef PNG_DEBUG
+#if (PNG_DEBUG > 0)
+#if !defined(PNG_DEBUG_FILE) && defined(_MSC_VER)
+#include <crtdbg.h>
+#if (PNG_DEBUG > 1)
+#ifndef _DEBUG
+#  define _DEBUG
+#endif
+#ifndef png_debug
+#define png_debug(l,m)  _RPT0(_CRT_WARN,m PNG_STRING_NEWLINE)
+#endif
+#ifndef png_debug1
+#define png_debug1(l,m,p1)  _RPT1(_CRT_WARN,m PNG_STRING_NEWLINE,p1)
+#endif
+#ifndef png_debug2
+#define png_debug2(l,m,p1,p2) _RPT2(_CRT_WARN,m PNG_STRING_NEWLINE,p1,p2)
+#endif
+#endif
+#else /* PNG_DEBUG_FILE || !_MSC_VER */
+#ifndef PNG_DEBUG_FILE
+#define PNG_DEBUG_FILE stderr
+#endif /* PNG_DEBUG_FILE */
+
+#if (PNG_DEBUG > 1)
+/* Note: ["%s"m PNG_STRING_NEWLINE] probably does not work on
+ * non-ISO compilers
+ */
+#  ifdef __STDC__
+#    ifndef png_debug
+#      define png_debug(l,m) \
+       { \
+       int num_tabs=l; \
+       fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
+         (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":"")))); \
+       }
+#    endif
+#    ifndef png_debug1
+#      define png_debug1(l,m,p1) \
+       { \
+       int num_tabs=l; \
+       fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
+         (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1); \
+       }
+#    endif
+#    ifndef png_debug2
+#      define png_debug2(l,m,p1,p2) \
+       { \
+       int num_tabs=l; \
+       fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
+         (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1,p2); \
+       }
+#    endif
+#  else /* __STDC __ */
+#    ifndef png_debug
+#      define png_debug(l,m) \
+       { \
+       int num_tabs=l; \
+       char format[256]; \
+       snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
+         (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
+         m,PNG_STRING_NEWLINE); \
+       fprintf(PNG_DEBUG_FILE,format); \
+       }
+#    endif
+#    ifndef png_debug1
+#      define png_debug1(l,m,p1) \
+       { \
+       int num_tabs=l; \
+       char format[256]; \
+       snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
+         (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
+         m,PNG_STRING_NEWLINE); \
+       fprintf(PNG_DEBUG_FILE,format,p1); \
+       }
+#    endif
+#    ifndef png_debug2
+#      define png_debug2(l,m,p1,p2) \
+       { \
+       int num_tabs=l; \
+       char format[256]; \
+       snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
+         (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
+         m,PNG_STRING_NEWLINE); \
+       fprintf(PNG_DEBUG_FILE,format,p1,p2); \
+       }
+#    endif
+#  endif /* __STDC __ */
+#endif /* (PNG_DEBUG > 1) */
+
+#endif /* _MSC_VER */
+#endif /* (PNG_DEBUG > 0) */
+#endif /* PNG_DEBUG */
+#ifndef png_debug
+#define png_debug(l, m)
+#endif
+#ifndef png_debug1
+#define png_debug1(l, m, p1)
+#endif
+#ifndef png_debug2
+#define png_debug2(l, m, p1, p2)
+#endif
+
+#if 0
+extern PNG_EXPORT(png_bytep,png_sig_bytes) PNGARG((void));
+#endif
+
 /* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */

 #ifdef __cplusplus
--- a/pngread.c
+++ b/pngread.c
@@ -1,7 +1,7 @@

 /* pngread.c - read a PNG file
 *
- * Last changed in libpng 1.4.0 [June 27, 2009]
+ * Last changed in libpng 1.4.0 [November 22, 2009]
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -15,7 +15,7 @@
 */

 #include "png.h"
-#if defined(PNG_READ_SUPPORTED)
+#ifdef PNG_READ_SUPPORTED
 #include "pngpriv.h"


@@ -53,6 +53,7 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
   int i;

   png_debug(1, "in png_create_read_struct");
+
 #ifdef PNG_USER_MEM_SUPPORTED
   png_ptr = (png_structp)png_create_struct_2(PNG_STRUCT_PNG,
      malloc_fn, mem_ptr);
@@ -64,8 +65,10 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,

   /* Added at libpng-1.2.6 */
 #ifdef PNG_SET_USER_LIMITS_SUPPORTED
-   png_ptr->user_width_max=PNG_USER_WIDTH_MAX;
-   png_ptr->user_height_max=PNG_USER_HEIGHT_MAX;
+   png_ptr->user_width_max = PNG_USER_WIDTH_MAX;
+   png_ptr->user_height_max = PNG_USER_HEIGHT_MAX;
+   /* Added at libpng-1.4.0 */
+   png_ptr->user_chunk_cache_max = PNG_USER_CHUNK_CACHE_MAX;
 #endif

 #ifdef PNG_SETJMP_SUPPORTED
@@ -75,10 +78,13 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
 #ifdef USE_FAR_KEYWORD
   if (setjmp(jmpbuf))
 #else
-   if (setjmp(png_ptr->jmpbuf))
+   if (setjmp(png_jmpbuf(png_ptr))) /* Sets longjmp to match setjmp */
 #endif
      PNG_ABORT();
+#ifdef USE_FAR_KEYWORD
+   png_memcpy(png_jmpbuf(png_ptr), jmpbuf, png_sizeof(jmp_buf));
 #endif
+#endif /* PNG_SETJMP_SUPPORTED */

 #ifdef PNG_USER_MEM_SUPPORTED
   png_set_mem_fn(png_ptr, mem_ptr, malloc_fn, free_fn);
@@ -110,7 +116,7 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
          (user_png_ver[0] == '1' && user_png_ver[2] != png_libpng_ver[2]) ||
          (user_png_ver[0] == '0' && user_png_ver[2] < '9'))
      {
-#if !defined(PNG_NO_STDIO) && !defined(_WIN32_WCE)
+#ifdef PNG_STDIO_SUPPORTED
         char msg[80];
         if (user_png_ver)
         {
@@ -186,7 +192,7 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
 }


-#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
 /* Read the information before the actual image data.  This has been
 * changed in v0.90 to allow reading a file that already has the magic
 * bytes read from the stream.  You can tell libpng how many bytes have
@@ -198,9 +204,11 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
 void PNGAPI
 png_read_info(png_structp png_ptr, png_infop info_ptr)
 {
+   png_debug(1, "in png_read_info");
+ 
   if (png_ptr == NULL || info_ptr == NULL)
      return;
-   png_debug(1, "in png_read_info");
+ 
   /* If we haven't checked all of the PNG signature bytes, do so now. */
   if (png_ptr->sig_bytes < 8)
   {
@@ -228,63 +236,61 @@ png_read_info(png_structp png_ptr, png_infop info_ptr)

   for (;;)
   {
-#ifdef PNG_USE_LOCAL_ARRAYS
-      PNG_CONST PNG_IHDR;
-      PNG_CONST PNG_IDAT;
-      PNG_CONST PNG_IEND;
-      PNG_CONST PNG_PLTE;
-#if defined(PNG_READ_bKGD_SUPPORTED)
-      PNG_CONST PNG_bKGD;
+      PNG_IHDR;
+      PNG_IDAT;
+      PNG_IEND;
+      PNG_PLTE;
+#ifdef PNG_READ_bKGD_SUPPORTED
+      PNG_bKGD;
 #endif
-#if defined(PNG_READ_cHRM_SUPPORTED)
-      PNG_CONST PNG_cHRM;
+#ifdef PNG_READ_cHRM_SUPPORTED
+      PNG_cHRM;
 #endif
-#if defined(PNG_READ_gAMA_SUPPORTED)
-      PNG_CONST PNG_gAMA;
+#ifdef PNG_READ_gAMA_SUPPORTED
+      PNG_gAMA;
 #endif
-#if defined(PNG_READ_hIST_SUPPORTED)
-      PNG_CONST PNG_hIST;
+#ifdef PNG_READ_hIST_SUPPORTED
+      PNG_hIST;
 #endif
-#if defined(PNG_READ_iCCP_SUPPORTED)
-      PNG_CONST PNG_iCCP;
+#ifdef PNG_READ_iCCP_SUPPORTED
+      PNG_iCCP;
 #endif
-#if defined(PNG_READ_iTXt_SUPPORTED)
-      PNG_CONST PNG_iTXt;
+#ifdef PNG_READ_iTXt_SUPPORTED
+      PNG_iTXt;
 #endif
-#if defined(PNG_READ_oFFs_SUPPORTED)
-      PNG_CONST PNG_oFFs;
+#ifdef PNG_READ_oFFs_SUPPORTED
+      PNG_oFFs;
 #endif
-#if defined(PNG_READ_pCAL_SUPPORTED)
-      PNG_CONST PNG_pCAL;
+#ifdef PNG_READ_pCAL_SUPPORTED
+      PNG_pCAL;
 #endif
-#if defined(PNG_READ_pHYs_SUPPORTED)
-      PNG_CONST PNG_pHYs;
+#ifdef PNG_READ_pHYs_SUPPORTED
+      PNG_pHYs;
 #endif
-#if defined(PNG_READ_sBIT_SUPPORTED)
-      PNG_CONST PNG_sBIT;
+#ifdef PNG_READ_sBIT_SUPPORTED
+      PNG_sBIT;
 #endif
-#if defined(PNG_READ_sCAL_SUPPORTED)
-      PNG_CONST PNG_sCAL;
+#ifdef PNG_READ_sCAL_SUPPORTED
+      PNG_sCAL;
 #endif
-#if defined(PNG_READ_sPLT_SUPPORTED)
-      PNG_CONST PNG_sPLT;
+#ifdef PNG_READ_sPLT_SUPPORTED
+      PNG_sPLT;
 #endif
-#if defined(PNG_READ_sRGB_SUPPORTED)
-      PNG_CONST PNG_sRGB;
+#ifdef PNG_READ_sRGB_SUPPORTED
+      PNG_sRGB;
 #endif
-#if defined(PNG_READ_tEXt_SUPPORTED)
-      PNG_CONST PNG_tEXt;
+#ifdef PNG_READ_tEXt_SUPPORTED
+      PNG_tEXt;
 #endif
-#if defined(PNG_READ_tIME_SUPPORTED)
-      PNG_CONST PNG_tIME;
+#ifdef PNG_READ_tIME_SUPPORTED
+      PNG_tIME;
 #endif
-#if defined(PNG_READ_tRNS_SUPPORTED)
-      PNG_CONST PNG_tRNS;
+#ifdef PNG_READ_tRNS_SUPPORTED
+      PNG_tRNS;
 #endif
-#if defined(PNG_READ_zTXt_SUPPORTED)
-      PNG_CONST PNG_zTXt;
+#ifdef PNG_READ_zTXt_SUPPORTED
+      PNG_zTXt;
 #endif
-#endif /* PNG_USE_LOCAL_ARRAYS */
      png_uint_32 length = png_read_chunk_header(png_ptr);
      PNG_CONST png_bytep chunk_name = png_ptr->chunk_name;

@@ -332,71 +338,71 @@ png_read_info(png_structp png_ptr, png_infop info_ptr)
         png_ptr->mode |= PNG_HAVE_IDAT;
         break;
      }
-#if defined(PNG_READ_bKGD_SUPPORTED)
+#ifdef PNG_READ_bKGD_SUPPORTED
      else if (!png_memcmp(chunk_name, png_bKGD, 4))
         png_handle_bKGD(png_ptr, info_ptr, length);
 #endif
-#if defined(PNG_READ_cHRM_SUPPORTED)
+#ifdef PNG_READ_cHRM_SUPPORTED
      else if (!png_memcmp(chunk_name, png_cHRM, 4))
         png_handle_cHRM(png_ptr, info_ptr, length);
 #endif
-#if defined(PNG_READ_gAMA_SUPPORTED)
+#ifdef PNG_READ_gAMA_SUPPORTED
      else if (!png_memcmp(chunk_name, png_gAMA, 4))
         png_handle_gAMA(png_ptr, info_ptr, length);
 #endif
-#if defined(PNG_READ_hIST_SUPPORTED)
+#ifdef PNG_READ_hIST_SUPPORTED
      else if (!png_memcmp(chunk_name, png_hIST, 4))
         png_handle_hIST(png_ptr, info_ptr, length);
 #endif
-#if defined(PNG_READ_oFFs_SUPPORTED)
+#ifdef PNG_READ_oFFs_SUPPORTED
      else if (!png_memcmp(chunk_name, png_oFFs, 4))
         png_handle_oFFs(png_ptr, info_ptr, length);
 #endif
-#if defined(PNG_READ_pCAL_SUPPORTED)
+#ifdef PNG_READ_pCAL_SUPPORTED
      else if (!png_memcmp(chunk_name, png_pCAL, 4))
         png_handle_pCAL(png_ptr, info_ptr, length);
 #endif
-#if defined(PNG_READ_sCAL_SUPPORTED)
+#ifdef PNG_READ_sCAL_SUPPORTED
      else if (!png_memcmp(chunk_name, png_sCAL, 4))
         png_handle_sCAL(png_ptr, info_ptr, length);
 #endif
-#if defined(PNG_READ_pHYs_SUPPORTED)
+#ifdef PNG_READ_pHYs_SUPPORTED
      else if (!png_memcmp(chunk_name, png_pHYs, 4))
         png_handle_pHYs(png_ptr, info_ptr, length);
 #endif
-#if defined(PNG_READ_sBIT_SUPPORTED)
+#ifdef PNG_READ_sBIT_SUPPORTED
      else if (!png_memcmp(chunk_name, png_sBIT, 4))
         png_handle_sBIT(png_ptr, info_ptr, length);
 #endif
-#if defined(PNG_READ_sRGB_SUPPORTED)
+#ifdef PNG_READ_sRGB_SUPPORTED
      else if (!png_memcmp(chunk_name, png_sRGB, 4))
         png_handle_sRGB(png_ptr, info_ptr, length);
 #endif
-#if defined(PNG_READ_iCCP_SUPPORTED)
+#ifdef PNG_READ_iCCP_SUPPORTED
      else if (!png_memcmp(chunk_name, png_iCCP, 4))
         png_handle_iCCP(png_ptr, info_ptr, length);
 #endif
-#if defined(PNG_READ_sPLT_SUPPORTED)
+#ifdef PNG_READ_sPLT_SUPPORTED
      else if (!png_memcmp(chunk_name, png_sPLT, 4))
         png_handle_sPLT(png_ptr, info_ptr, length);
 #endif
-#if defined(PNG_READ_tEXt_SUPPORTED)
+#ifdef PNG_READ_tEXt_SUPPORTED
      else if (!png_memcmp(chunk_name, png_tEXt, 4))
         png_handle_tEXt(png_ptr, info_ptr, length);
 #endif
-#if defined(PNG_READ_tIME_SUPPORTED)
+#ifdef PNG_READ_tIME_SUPPORTED
      else if (!png_memcmp(chunk_name, png_tIME, 4))
         png_handle_tIME(png_ptr, info_ptr, length);
 #endif
-#if defined(PNG_READ_tRNS_SUPPORTED)
+#ifdef PNG_READ_tRNS_SUPPORTED
      else if (!png_memcmp(chunk_name, png_tRNS, 4))
         png_handle_tRNS(png_ptr, info_ptr, length);
 #endif
-#if defined(PNG_READ_zTXt_SUPPORTED)
+#ifdef PNG_READ_zTXt_SUPPORTED
      else if (!png_memcmp(chunk_name, png_zTXt, 4))
         png_handle_zTXt(png_ptr, info_ptr, length);
 #endif
-#if defined(PNG_READ_iTXt_SUPPORTED)
+#ifdef PNG_READ_iTXt_SUPPORTED
      else if (!png_memcmp(chunk_name, png_iTXt, 4))
         png_handle_iTXt(png_ptr, info_ptr, length);
 #endif
@@ -404,13 +410,14 @@ png_read_info(png_structp png_ptr, png_infop info_ptr)
         png_handle_unknown(png_ptr, info_ptr, length);
   }
 }
-#endif /* PNG_NO_SEQUENTIAL_READ_SUPPORTED */
+#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */

 /* Optional call to update the users info_ptr structure */
 void PNGAPI
 png_read_update_info(png_structp png_ptr, png_infop info_ptr)
 {
   png_debug(1, "in png_read_update_info");
+ 
   if (png_ptr == NULL)
      return;
   if (!(png_ptr->flags & PNG_FLAG_ROW_INIT))
@@ -421,7 +428,7 @@ png_read_update_info(png_structp png_ptr, png_infop info_ptr)
   png_read_transform_info(png_ptr, info_ptr);
 }

-#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
 /* Initialize palette, background, etc, after transformations
 * are set, but before any reading takes place.  This allows
 * the user to obtain a gamma-corrected palette, for example.
@@ -431,28 +438,30 @@ void PNGAPI
 png_start_read_image(png_structp png_ptr)
 {
   png_debug(1, "in png_start_read_image");
+ 
   if (png_ptr == NULL)
      return;
   if (!(png_ptr->flags & PNG_FLAG_ROW_INIT))
      png_read_start_row(png_ptr);
 }
-#endif /* PNG_NO_SEQUENTIAL_READ_SUPPORTED */
+#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */

-#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
 void PNGAPI
 png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
 {
-#ifdef PNG_USE_LOCAL_ARRAYS
-   PNG_CONST PNG_IDAT;
+   PNG_IDAT;
   PNG_CONST int png_pass_dsp_mask[7] = {0xff, 0x0f, 0xff, 0x33, 0xff, 0x55,
      0xff};
   PNG_CONST int png_pass_mask[7] = {0x80, 0x08, 0x88, 0x22, 0xaa, 0x55, 0xff};
-#endif
   int ret;
+ 
   if (png_ptr == NULL)
      return;
+ 
   png_debug2(1, "in png_read_row (row %lu, pass %d)",
      (unsigned long) png_ptr->row_number, png_ptr->pass);
+
   if (!(png_ptr->flags & PNG_FLAG_ROW_INIT))
      png_read_start_row(png_ptr);
   if (png_ptr->row_number == 0 && png_ptr->pass == 0)
@@ -488,7 +497,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
 #endif
   }

-#if defined(PNG_READ_INTERLACING_SUPPORTED)
+#ifdef PNG_READ_INTERLACING_SUPPORTED
   /* If interlaced and we do not need a new row, combine row and return */
   if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE))
   {
@@ -621,7 +630,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)

   png_memcpy(png_ptr->prev_row, png_ptr->row_buf, png_ptr->rowbytes + 1);

-#if defined(PNG_MNG_FEATURES_SUPPORTED)
+#ifdef PNG_MNG_FEATURES_SUPPORTED
   if ((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
      (png_ptr->filter_type == PNG_INTRAPIXEL_DIFFERENCING))
   {
@@ -634,7 +643,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
   if (png_ptr->transformations || (png_ptr->flags&PNG_FLAG_STRIP_ALPHA))
      png_do_read_transformations(png_ptr);

-#if defined(PNG_READ_INTERLACING_SUPPORTED)
+#ifdef PNG_READ_INTERLACING_SUPPORTED
   /* Blow up interlaced rows to full size */
   if (png_ptr->interlaced &&
      (png_ptr->transformations & PNG_INTERLACE))
@@ -666,9 +675,9 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
   if (png_ptr->read_row_fn != NULL)
      (*(png_ptr->read_row_fn))(png_ptr, png_ptr->row_number, png_ptr->pass);
 }
-#endif /* PNG_NO_SEQUENTIAL_READ_SUPPORTED */
+#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */

-#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
 /* Read one or more rows of image data.  If the image is interlaced,
 * and png_set_interlace_handling() has been called, the rows need to
 * contain the contents of the rows from the previous pass.  If the
@@ -702,6 +711,7 @@ png_read_rows(png_structp png_ptr, png_bytepp row,
   png_bytepp dp;

   png_debug(1, "in png_read_rows");
+ 
   if (png_ptr == NULL)
      return;
   rp = row;
@@ -729,9 +739,9 @@ png_read_rows(png_structp png_ptr, png_bytepp row,
         dp++;
      }
 }
-#endif /* PNG_NO_SEQUENTIAL_READ_SUPPORTED */
+#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */

-#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
 /* Read the entire image.  If the image has an alpha channel or a tRNS
 * chunk, and you have called png_handle_alpha()[*], you will need to
 * initialize the image to the current image that PNG will be overlaying.
@@ -752,6 +762,7 @@ png_read_image(png_structp png_ptr, png_bytepp image)
   png_bytepp rp;

   png_debug(1, "in png_read_image");
+ 
   if (png_ptr == NULL)
      return;

@@ -778,9 +789,9 @@ png_read_image(png_structp png_ptr, png_bytepp image)
      }
   }
 }
-#endif /* PNG_NO_SEQUENTIAL_READ_SUPPORTED */
+#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */

-#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
 /* Read the end of the PNG file.  Will not read past the end of the
 * file, will verify the end is accurate, and will read any comments
 * or time information at the end of the file, if info is not NULL.
@@ -789,69 +800,68 @@ void PNGAPI
 png_read_end(png_structp png_ptr, png_infop info_ptr)
 {
   png_debug(1, "in png_read_end");
+ 
   if (png_ptr == NULL)
      return;
   png_crc_finish(png_ptr, 0); /* Finish off CRC from last IDAT chunk */

   do
   {
-#ifdef PNG_USE_LOCAL_ARRAYS
-      PNG_CONST PNG_IHDR;
-      PNG_CONST PNG_IDAT;
-      PNG_CONST PNG_IEND;
-      PNG_CONST PNG_PLTE;
-#if defined(PNG_READ_bKGD_SUPPORTED)
-      PNG_CONST PNG_bKGD;
+      PNG_IHDR;
+      PNG_IDAT;
+      PNG_IEND;
+      PNG_PLTE;
+#ifdef PNG_READ_bKGD_SUPPORTED
+      PNG_bKGD;
 #endif
-#if defined(PNG_READ_cHRM_SUPPORTED)
-      PNG_CONST PNG_cHRM;
+#ifdef PNG_READ_cHRM_SUPPORTED
+      PNG_cHRM;
 #endif
-#if defined(PNG_READ_gAMA_SUPPORTED)
-      PNG_CONST PNG_gAMA;
+#ifdef PNG_READ_gAMA_SUPPORTED
+      PNG_gAMA;
 #endif
-#if defined(PNG_READ_hIST_SUPPORTED)
-      PNG_CONST PNG_hIST;
+#ifdef PNG_READ_hIST_SUPPORTED
+      PNG_hIST;
 #endif
-#if defined(PNG_READ_iCCP_SUPPORTED)
-      PNG_CONST PNG_iCCP;
+#ifdef PNG_READ_iCCP_SUPPORTED
+      PNG_iCCP;
 #endif
-#if defined(PNG_READ_iTXt_SUPPORTED)
-      PNG_CONST PNG_iTXt;
+#ifdef PNG_READ_iTXt_SUPPORTED
+      PNG_iTXt;
 #endif
-#if defined(PNG_READ_oFFs_SUPPORTED)
-      PNG_CONST PNG_oFFs;
+#ifdef PNG_READ_oFFs_SUPPORTED
+      PNG_oFFs;
 #endif
-#if defined(PNG_READ_pCAL_SUPPORTED)
-      PNG_CONST PNG_pCAL;
+#ifdef PNG_READ_pCAL_SUPPORTED
+      PNG_pCAL;
 #endif
-#if defined(PNG_READ_pHYs_SUPPORTED)
-      PNG_CONST PNG_pHYs;
+#ifdef PNG_READ_pHYs_SUPPORTED
+      PNG_pHYs;
 #endif
-#if defined(PNG_READ_sBIT_SUPPORTED)
-      PNG_CONST PNG_sBIT;
+#ifdef PNG_READ_sBIT_SUPPORTED
+      PNG_sBIT;
 #endif
-#if defined(PNG_READ_sCAL_SUPPORTED)
-      PNG_CONST PNG_sCAL;
+#ifdef PNG_READ_sCAL_SUPPORTED
+      PNG_sCAL;
 #endif
-#if defined(PNG_READ_sPLT_SUPPORTED)
-      PNG_CONST PNG_sPLT;
+#ifdef PNG_READ_sPLT_SUPPORTED
+      PNG_sPLT;
 #endif
-#if defined(PNG_READ_sRGB_SUPPORTED)
-      PNG_CONST PNG_sRGB;
+#ifdef PNG_READ_sRGB_SUPPORTED
+      PNG_sRGB;
 #endif
-#if defined(PNG_READ_tEXt_SUPPORTED)
-      PNG_CONST PNG_tEXt;
+#ifdef PNG_READ_tEXt_SUPPORTED
+      PNG_tEXt;
 #endif
-#if defined(PNG_READ_tIME_SUPPORTED)
-      PNG_CONST PNG_tIME;
+#ifdef PNG_READ_tIME_SUPPORTED
+      PNG_tIME;
 #endif
-#if defined(PNG_READ_tRNS_SUPPORTED)
-      PNG_CONST PNG_tRNS;
+#ifdef PNG_READ_tRNS_SUPPORTED
+      PNG_tRNS;
 #endif
-#if defined(PNG_READ_zTXt_SUPPORTED)
-      PNG_CONST PNG_zTXt;
+#ifdef PNG_READ_zTXt_SUPPORTED
+      PNG_zTXt;
 #endif
-#endif /* PNG_USE_LOCAL_ARRAYS */
      png_uint_32 length = png_read_chunk_header(png_ptr);
      PNG_CONST png_bytep chunk_name = png_ptr->chunk_name;

@@ -883,71 +893,71 @@ png_read_end(png_structp png_ptr, png_infop info_ptr)
      }
      else if (!png_memcmp(chunk_name, png_PLTE, 4))
         png_handle_PLTE(png_ptr, info_ptr, length);
-#if defined(PNG_READ_bKGD_SUPPORTED)
+#ifdef PNG_READ_bKGD_SUPPORTED
      else if (!png_memcmp(chunk_name, png_bKGD, 4))
         png_handle_bKGD(png_ptr, info_ptr, length);
 #endif
-#if defined(PNG_READ_cHRM_SUPPORTED)
+#ifdef PNG_READ_cHRM_SUPPORTED
      else if (!png_memcmp(chunk_name, png_cHRM, 4))
         png_handle_cHRM(png_ptr, info_ptr, length);
 #endif
-#if defined(PNG_READ_gAMA_SUPPORTED)
+#ifdef PNG_READ_gAMA_SUPPORTED
      else if (!png_memcmp(chunk_name, png_gAMA, 4))
         png_handle_gAMA(png_ptr, info_ptr, length);
 #endif
-#if defined(PNG_READ_hIST_SUPPORTED)
+#ifdef PNG_READ_hIST_SUPPORTED
      else if (!png_memcmp(chunk_name, png_hIST, 4))
         png_handle_hIST(png_ptr, info_ptr, length);
 #endif
-#if defined(PNG_READ_oFFs_SUPPORTED)
+#ifdef PNG_READ_oFFs_SUPPORTED
      else if (!png_memcmp(chunk_name, png_oFFs, 4))
         png_handle_oFFs(png_ptr, info_ptr, length);
 #endif
-#if defined(PNG_READ_pCAL_SUPPORTED)
+#ifdef PNG_READ_pCAL_SUPPORTED
      else if (!png_memcmp(chunk_name, png_pCAL, 4))
         png_handle_pCAL(png_ptr, info_ptr, length);
 #endif
-#if defined(PNG_READ_sCAL_SUPPORTED)
+#ifdef PNG_READ_sCAL_SUPPORTED
      else if (!png_memcmp(chunk_name, png_sCAL, 4))
         png_handle_sCAL(png_ptr, info_ptr, length);
 #endif
-#if defined(PNG_READ_pHYs_SUPPORTED)
+#ifdef PNG_READ_pHYs_SUPPORTED
      else if (!png_memcmp(chunk_name, png_pHYs, 4))
         png_handle_pHYs(png_ptr, info_ptr, length);
 #endif
-#if defined(PNG_READ_sBIT_SUPPORTED)
+#ifdef PNG_READ_sBIT_SUPPORTED
      else if (!png_memcmp(chunk_name, png_sBIT, 4))
         png_handle_sBIT(png_ptr, info_ptr, length);
 #endif
-#if defined(PNG_READ_sRGB_SUPPORTED)
+#ifdef PNG_READ_sRGB_SUPPORTED
      else if (!png_memcmp(chunk_name, png_sRGB, 4))
         png_handle_sRGB(png_ptr, info_ptr, length);
 #endif
-#if defined(PNG_READ_iCCP_SUPPORTED)
+#ifdef PNG_READ_iCCP_SUPPORTED
      else if (!png_memcmp(chunk_name, png_iCCP, 4))
         png_handle_iCCP(png_ptr, info_ptr, length);
 #endif
-#if defined(PNG_READ_sPLT_SUPPORTED)
+#ifdef PNG_READ_sPLT_SUPPORTED
      else if (!png_memcmp(chunk_name, png_sPLT, 4))
         png_handle_sPLT(png_ptr, info_ptr, length);
 #endif
-#if defined(PNG_READ_tEXt_SUPPORTED)
+#ifdef PNG_READ_tEXt_SUPPORTED
      else if (!png_memcmp(chunk_name, png_tEXt, 4))
         png_handle_tEXt(png_ptr, info_ptr, length);
 #endif
-#if defined(PNG_READ_tIME_SUPPORTED)
+#ifdef PNG_READ_tIME_SUPPORTED
      else if (!png_memcmp(chunk_name, png_tIME, 4))
         png_handle_tIME(png_ptr, info_ptr, length);
 #endif
-#if defined(PNG_READ_tRNS_SUPPORTED)
+#ifdef PNG_READ_tRNS_SUPPORTED
      else if (!png_memcmp(chunk_name, png_tRNS, 4))
         png_handle_tRNS(png_ptr, info_ptr, length);
 #endif
-#if defined(PNG_READ_zTXt_SUPPORTED)
+#ifdef PNG_READ_zTXt_SUPPORTED
      else if (!png_memcmp(chunk_name, png_zTXt, 4))
         png_handle_zTXt(png_ptr, info_ptr, length);
 #endif
-#if defined(PNG_READ_iTXt_SUPPORTED)
+#ifdef PNG_READ_iTXt_SUPPORTED
      else if (!png_memcmp(chunk_name, png_iTXt, 4))
         png_handle_iTXt(png_ptr, info_ptr, length);
 #endif
@@ -955,7 +965,7 @@ png_read_end(png_structp png_ptr, png_infop info_ptr)
         png_handle_unknown(png_ptr, info_ptr, length);
   } while (!(png_ptr->mode & PNG_HAVE_IEND));
 }
-#endif /* PNG_NO_SEQUENTIAL_READ_SUPPORTED */
+#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */

 /* Free all memory used by the read */
 void PNGAPI
@@ -970,6 +980,7 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
 #endif

   png_debug(1, "in png_destroy_read_struct");
+ 
   if (png_ptr_ptr != NULL)
      png_ptr = *png_ptr_ptr;
   if (png_ptr == NULL)
@@ -990,7 +1001,7 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,

   if (info_ptr != NULL)
   {
-#if defined(PNG_TEXT_SUPPORTED)
+#ifdef PNG_TEXT_SUPPORTED
      png_free_data(png_ptr, info_ptr, PNG_FREE_TEXT, -1);
 #endif

@@ -1005,7 +1016,7 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,

   if (end_info_ptr != NULL)
   {
-#if defined(PNG_READ_TEXT_SUPPORTED)
+#ifdef PNG_READ_TEXT_SUPPORTED
      png_free_data(png_ptr, end_info_ptr, PNG_FREE_TEXT, -1);
 #endif
 #ifdef PNG_USER_MEM_SUPPORTED
@@ -1044,6 +1055,7 @@ png_read_destroy(png_structp png_ptr, png_infop info_ptr, png_infop end_info_ptr
 #endif

   png_debug(1, "in png_read_destroy");
+ 
   if (info_ptr != NULL)
      png_info_destroy(png_ptr, info_ptr);

@@ -1054,50 +1066,32 @@ png_read_destroy(png_structp png_ptr, png_infop info_ptr, png_infop end_info_ptr
   png_free(png_ptr, png_ptr->big_row_buf);
   png_free(png_ptr, png_ptr->prev_row);
   png_free(png_ptr, png_ptr->chunkdata);
-#if defined(PNG_READ_DITHER_SUPPORTED)
+#ifdef PNG_READ_DITHER_SUPPORTED
   png_free(png_ptr, png_ptr->palette_lookup);
   png_free(png_ptr, png_ptr->dither_index);
 #endif
-#if defined(PNG_READ_GAMMA_SUPPORTED)
+#ifdef PNG_READ_GAMMA_SUPPORTED
   png_free(png_ptr, png_ptr->gamma_table);
 #endif
-#if defined(PNG_READ_BACKGROUND_SUPPORTED)
+#ifdef PNG_READ_BACKGROUND_SUPPORTED
   png_free(png_ptr, png_ptr->gamma_from_1);
   png_free(png_ptr, png_ptr->gamma_to_1);
 #endif
-#ifdef PNG_FREE_ME_SUPPORTED
   if (png_ptr->free_me & PNG_FREE_PLTE)
      png_zfree(png_ptr, png_ptr->palette);
   png_ptr->free_me &= ~PNG_FREE_PLTE;
-#else
-   if (png_ptr->flags & PNG_FLAG_FREE_PLTE)
-      png_zfree(png_ptr, png_ptr->palette);
-   png_ptr->flags &= ~PNG_FLAG_FREE_PLTE;
-#endif
 #if defined(PNG_tRNS_SUPPORTED) || \
    defined(PNG_READ_EXPAND_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
-#ifdef PNG_FREE_ME_SUPPORTED
   if (png_ptr->free_me & PNG_FREE_TRNS)
-      png_free(png_ptr, png_ptr->trans);
+      png_free(png_ptr, png_ptr->trans_alpha);
   png_ptr->free_me &= ~PNG_FREE_TRNS;
-#else
-   if (png_ptr->flags & PNG_FLAG_FREE_TRNS)
-      png_free(png_ptr, png_ptr->trans);
-   png_ptr->flags &= ~PNG_FLAG_FREE_TRNS;
 #endif
-#endif
-#if defined(PNG_READ_hIST_SUPPORTED)
-#ifdef PNG_FREE_ME_SUPPORTED
+#ifdef PNG_READ_hIST_SUPPORTED
   if (png_ptr->free_me & PNG_FREE_HIST)
      png_free(png_ptr, png_ptr->hist);
   png_ptr->free_me &= ~PNG_FREE_HIST;
-#else
-   if (png_ptr->flags & PNG_FLAG_FREE_HIST)
-      png_free(png_ptr, png_ptr->hist);
-   png_ptr->flags &= ~PNG_FLAG_FREE_HIST;
 #endif
-#endif
-#if defined(PNG_READ_GAMMA_SUPPORTED)
+#ifdef PNG_READ_GAMMA_SUPPORTED
   if (png_ptr->gamma_16_table != NULL)
   {
      int i;
@@ -1108,7 +1102,7 @@ png_read_destroy(png_structp png_ptr, png_infop info_ptr, png_infop end_info_ptr
      }
   png_free(png_ptr, png_ptr->gamma_16_table);
   }
-#if defined(PNG_READ_BACKGROUND_SUPPORTED)
+#ifdef PNG_READ_BACKGROUND_SUPPORTED
   if (png_ptr->gamma_16_from_1 != NULL)
   {
      int i;
@@ -1131,7 +1125,7 @@ png_read_destroy(png_structp png_ptr, png_infop info_ptr, png_infop end_info_ptr
   }
 #endif
 #endif
-#if defined(PNG_TIME_RFC1123_SUPPORTED)
+#ifdef PNG_TIME_RFC1123_SUPPORTED
   png_free(png_ptr, png_ptr->time_buffer);
 #endif

@@ -1184,8 +1178,8 @@ png_set_read_status_fn(png_structp png_ptr, png_read_status_ptr read_row_fn)
 }


-#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
-#if defined(PNG_INFO_IMAGE_SUPPORTED)
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
+#ifdef PNG_INFO_IMAGE_SUPPORTED
 void PNGAPI
 png_read_png(png_structp png_ptr, png_infop info_ptr,
                           int transforms,
@@ -1195,12 +1189,6 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,

   if (png_ptr == NULL)
      return;
-#if defined(PNG_READ_INVERT_ALPHA_SUPPORTED)
-   /* Invert the alpha channel from opacity to transparency
-    */
-   if (transforms & PNG_TRANSFORM_INVERT_ALPHA)
-       png_set_invert_alpha(png_ptr);
-#endif

   /* png_read_info() gives us all of the information from the
    * PNG file before the first IDAT (image data chunk).
@@ -1211,14 +1199,14 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,

   /* -------------- image transformations start here ------------------- */

-#if defined(PNG_READ_16_TO_8_SUPPORTED)
+#ifdef PNG_READ_16_TO_8_SUPPORTED
   /* Tell libpng to strip 16 bit/color files down to 8 bits per color.
    */
   if (transforms & PNG_TRANSFORM_STRIP_16)
      png_set_strip_16(png_ptr);
 #endif

-#if defined(PNG_READ_STRIP_ALPHA_SUPPORTED)
+#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED
   /* Strip alpha bytes from the input data without combining with
    * the background (not recommended).
    */
@@ -1234,7 +1222,7 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
      png_set_packing(png_ptr);
 #endif

-#if defined(PNG_READ_PACKSWAP_SUPPORTED)
+#ifdef PNG_READ_PACKSWAP_SUPPORTED
   /* Change the order of packed pixels to least significant bit first
    * (not useful if you are using png_set_packing).
    */
@@ -1242,7 +1230,7 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
      png_set_packswap(png_ptr);
 #endif

-#if defined(PNG_READ_EXPAND_SUPPORTED)
+#ifdef PNG_READ_EXPAND_SUPPORTED
   /* Expand paletted colors into true RGB triplets
    * Expand grayscale images to full 8 bits from 1, 2, or 4 bits/pixel
    * Expand paletted or RGB images with transparency to full alpha
@@ -1258,14 +1246,14 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
   /* We don't handle background color or gamma transformation or dithering.
    */

-#if defined(PNG_READ_INVERT_SUPPORTED)
+#ifdef PNG_READ_INVERT_SUPPORTED
   /* Invert monochrome files to have 0 as white and 1 as black
    */
   if (transforms & PNG_TRANSFORM_INVERT_MONO)
      png_set_invert_mono(png_ptr);
 #endif

-#if defined(PNG_READ_SHIFT_SUPPORTED)
+#ifdef PNG_READ_SHIFT_SUPPORTED
   /* If you want to shift the pixel values from the range [0,255] or
    * [0,65535] to the original [0,7] or [0,31], or whatever range the
    * colors were originally in:
@@ -1280,27 +1268,43 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
   }
 #endif

-#if defined(PNG_READ_BGR_SUPPORTED)
+#ifdef PNG_READ_BGR_SUPPORTED
   /* Flip the RGB pixels to BGR (or RGBA to BGRA)
    */
   if (transforms & PNG_TRANSFORM_BGR)
      png_set_bgr(png_ptr);
 #endif

-#if defined(PNG_READ_SWAP_ALPHA_SUPPORTED)
+#ifdef PNG_READ_SWAP_ALPHA_SUPPORTED
   /* Swap the RGBA or GA data to ARGB or AG (or BGRA to ABGR)
    */
   if (transforms & PNG_TRANSFORM_SWAP_ALPHA)
       png_set_swap_alpha(png_ptr);
 #endif

-#if defined(PNG_READ_SWAP_SUPPORTED)
+#ifdef PNG_READ_SWAP_SUPPORTED
   /* Swap bytes of 16 bit files to least significant byte first
    */
   if (transforms & PNG_TRANSFORM_SWAP_ENDIAN)
      png_set_swap(png_ptr);
 #endif

+/* Added at libpng-1.2.41 */
+#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED
+   /* Invert the alpha channel from opacity to transparency
+    */
+   if (transforms & PNG_TRANSFORM_INVERT_ALPHA)
+       png_set_invert_alpha(png_ptr);
+#endif
+
+/* Added at libpng-1.2.41 */
+#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
+   /* Expand grayscale image to RGB
+    */
+   if (transforms & PNG_TRANSFORM_GRAY_TO_RGB)
+       png_set_gray_to_rgb(png_ptr);
+#endif
+
   /* We don't handle adding filler bytes */

   /* Optional call to gamma correct and add the background to the palette
@@ -1311,23 +1315,18 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,

   /* -------------- image transformations end here ------------------- */

-#ifdef PNG_FREE_ME_SUPPORTED
   png_free_data(png_ptr, info_ptr, PNG_FREE_ROWS, 0);
-#endif
   if (info_ptr->row_pointers == NULL)
   {
-#ifdef PNG_CALLOC_SUPPORTED
-      info_ptr->row_pointers = (png_bytepp)png_calloc(png_ptr,
-         info_ptr->height * png_sizeof(png_bytep));
-#else
+    png_uint_32 iptr;
+
      info_ptr->row_pointers = (png_bytepp)png_malloc(png_ptr,
         info_ptr->height * png_sizeof(png_bytep));
-      png_memset(info_ptr->row_pointers, 0, info_ptr->height
-         * png_sizeof(png_bytep));
-#endif
-#ifdef PNG_FREE_ME_SUPPORTED
+      for (iptr=0; iptr<info_ptr->height; iptr++)
+         info_ptr->row_pointers[iptr] = NULL;
+
      info_ptr->free_me |= PNG_FREE_ROWS;
-#endif
+
      for (row = 0; row < (int)info_ptr->height; row++)
         info_ptr->row_pointers[row] = (png_bytep)png_malloc(png_ptr,
            png_get_rowbytes(png_ptr, info_ptr));
@@ -1344,5 +1343,5 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,

 }
 #endif /* PNG_INFO_IMAGE_SUPPORTED */
-#endif /* PNG_NO_SEQUENTIAL_READ_SUPPORTED */
+#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
 #endif /* PNG_READ_SUPPORTED */
--- a/pngrio.c
+++ b/pngrio.c
@@ -1,7 +1,7 @@

 /* pngrio.c - functions for data input
 *
- * Last changed in libpng 1.4.0 [June 27, 2009]
+ * Last changed in libpng 1.4.0 [November 22, 2009]
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -19,7 +19,7 @@
 */

 #include "png.h"
-#if defined(PNG_READ_SUPPORTED)
+#ifdef PNG_READ_SUPPORTED
 #include "pngpriv.h"

 /* Read the data from whatever input you are using.  The default routine
@@ -32,13 +32,14 @@ void /* PRIVATE */
 png_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
 {
   png_debug1(4, "reading %d bytes", (int)length);
+ 
   if (png_ptr->read_data_fn != NULL)
      (*(png_ptr->read_data_fn))(png_ptr, data, length);
   else
      png_error(png_ptr, "Call to NULL read function");
 }

-#if !defined(PNG_NO_STDIO)
+#ifdef PNG_STDIO_SUPPORTED
 /* This is the function that does the actual reading of data.  If you are
 * not reading from a standard C stream, you should create a replacement
 * read_data function and use it at run time with png_set_read_fn(), rather
@@ -135,7 +136,7 @@ png_set_read_fn(png_structp png_ptr, png_voidp io_ptr,
      return;
   png_ptr->io_ptr = io_ptr;

-#if !defined(PNG_NO_STDIO)
+#ifdef PNG_STDIO_SUPPORTED
   if (read_data_fn != NULL)
      png_ptr->read_data_fn = read_data_fn;
   else
@@ -154,7 +155,7 @@ png_set_read_fn(png_structp png_ptr, png_voidp io_ptr,
         "same structure.  Resetting write_data_fn to NULL");
   }

-#if defined(PNG_WRITE_FLUSH_SUPPORTED)
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
   png_ptr->output_flush_fn = NULL;
 #endif
 }
--- a/pngrtran.c
+++ b/pngrtran.c
--- a/pngrutil.c
+++ b/pngrutil.c
@@ -1,7 +1,7 @@

 /* pngrutil.c - utilities to read a PNG file
 *
- * Last changed in libpng 1.4.0 [June 27, 2009]
+ * Last changed in libpng 1.4.0 [November 22, 2009]
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -15,7 +15,7 @@
 */

 #include "png.h"
-#if defined(PNG_READ_SUPPORTED)
+#ifdef PNG_READ_SUPPORTED
 #include "pngpriv.h"

 #    define png_strtod(p,a,b) strtod(a,b)
@@ -212,7 +212,7 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
                              png_size_t chunklength,
                              png_size_t prefix_size, png_size_t *newlength)
 {
-   static PNG_CONST char msg[] = "Error decoding compressed text";
+   static PNG_CONST char msg[] = "Error decoding compressed chunk";
   png_charp text;
   png_size_t text_size;

@@ -286,9 +286,23 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
               png_charp tmp;

               tmp = text;
-               text = (png_charp)png_malloc_warn(png_ptr,
-                  (png_size_t)(text_size +
-                  png_ptr->zbuf_size - png_ptr->zstream.avail_out + 1));
+#ifdef PNG_SET_USER_LIMITS_SUPPORTED
+               if ((png_ptr->user_chunk_cache_max != 0) &&
+                  (--png_ptr->user_chunk_cache_max == 0))
+               {
+                  png_warning(png_ptr, "No space in chunk cache");
+                  text = NULL;
+               }
+
+               else
+               {
+#endif
+                  text = (png_charp)png_malloc_warn(png_ptr,
+                     (png_size_t)(text_size +
+                      png_ptr->zbuf_size - png_ptr->zstream.avail_out + 1));
+#ifdef PNG_SET_USER_LIMITS_SUPPORTED
+               }
+#endif
               if (text == NULL)
               {
                  png_free(png_ptr, tmp);
@@ -315,7 +329,7 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
      }
      if (ret != Z_STREAM_END)
      {
-#if !defined(PNG_NO_STDIO)
+#ifdef PNG_STDIO_SUPPORTED
         char umsg[52];

         if (ret == Z_BUF_ERROR)
@@ -362,7 +376,7 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
   }
   else /* if (comp_type != PNG_COMPRESSION_TYPE_BASE) */
   {
-#if !defined(PNG_NO_STDIO)
+#ifdef PNG_STDIO_SUPPORTED
      char umsg[50];

      png_snprintf(umsg, 50, "Unknown zTXt compression type %d", comp_type);
@@ -414,7 +428,7 @@ png_handle_IHDR(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
   png_ptr->bit_depth = (png_byte)bit_depth;
   png_ptr->interlaced = (png_byte)interlace_type;
   png_ptr->color_type = (png_byte)color_type;
-#if defined(PNG_MNG_FEATURES_SUPPORTED)
+#ifdef PNG_MNG_FEATURES_SUPPORTED
   png_ptr->filter_type = (png_byte)filter_type;
 #endif
   png_ptr->compression_type = (png_byte)compression_type;
@@ -457,7 +471,7 @@ png_handle_PLTE(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 {
   png_color palette[PNG_MAX_PALETTE_LENGTH];
   int num, i;
-#ifndef PNG_NO_POINTER_INDEXING
+#ifdef PNG_POINTER_INDEXING_SUPPORTED
   png_colorp pal_ptr;
 #endif

@@ -485,7 +499,7 @@ png_handle_PLTE(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
      png_crc_finish(png_ptr, length);
      return;
   }
-#if !defined(PNG_READ_OPT_PLTE_SUPPORTED)
+#ifndef PNG_READ_OPT_PLTE_SUPPORTED
   if (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE)
   {
      png_crc_finish(png_ptr, length);
@@ -510,7 +524,7 @@ png_handle_PLTE(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)

   num = (int)length / 3;

-#ifndef PNG_NO_POINTER_INDEXING
+#ifdef PNG_POINTER_INDEXING_SUPPORTED
   for (i = 0, pal_ptr = palette; i < num; i++, pal_ptr++)
   {
      png_byte buf[3];
@@ -538,13 +552,13 @@ png_handle_PLTE(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
    * have an RGB image, the PLTE can be considered ancillary, so
    * we will act as though it is.
    */
-#if !defined(PNG_READ_OPT_PLTE_SUPPORTED)
+#ifndef PNG_READ_OPT_PLTE_SUPPORTED
   if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
 #endif
   {
      png_crc_finish(png_ptr, 0);
   }
-#if !defined(PNG_READ_OPT_PLTE_SUPPORTED)
+#ifndef PNG_READ_OPT_PLTE_SUPPORTED
   else if (png_crc_error(png_ptr))  /* Only if we have a CRC error */
   {
      /* If we don't want to use the data from an ancillary chunk,
@@ -573,7 +587,7 @@ png_handle_PLTE(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)

   png_set_PLTE(png_ptr, info_ptr, palette, num);

-#if defined(PNG_READ_tRNS_SUPPORTED)
+#ifdef PNG_READ_tRNS_SUPPORTED
   if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
   {
      if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS))
@@ -615,7 +629,7 @@ png_handle_IEND(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
   info_ptr = info_ptr; /* Quiet compiler warnings about unused info_ptr */
 }

-#if defined(PNG_READ_gAMA_SUPPORTED)
+#ifdef PNG_READ_gAMA_SUPPORTED
 void /* PRIVATE */
 png_handle_gAMA(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 {
@@ -640,7 +654,7 @@ png_handle_gAMA(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
      png_warning(png_ptr, "Out of place gAMA chunk");

   if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA)
-#if defined(PNG_READ_sRGB_SUPPORTED)
+#ifdef PNG_READ_sRGB_SUPPORTED
      && !(info_ptr->valid & PNG_INFO_sRGB)
 #endif
      )
@@ -670,13 +684,13 @@ png_handle_gAMA(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
         return;
      }

-#if defined(PNG_READ_sRGB_SUPPORTED)
+#ifdef PNG_READ_sRGB_SUPPORTED
   if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_sRGB))
      if (PNG_OUT_OF_RANGE(igamma, 45500L, 500))
      {
         png_warning(png_ptr,
           "Ignoring incorrect gAMA value when sRGB is also present");
-#ifndef PNG_NO_CONSOLE_IO
+#ifdef PNG_CONSOLE_IO_SUPPORTED
         fprintf(stderr, "gamma = (%d/100000)", (int)igamma);
 #endif
         return;
@@ -696,7 +710,7 @@ png_handle_gAMA(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 }
 #endif

-#if defined(PNG_READ_sBIT_SUPPORTED)
+#ifdef PNG_READ_sBIT_SUPPORTED
 void /* PRIVATE */
 png_handle_sBIT(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 {
@@ -762,7 +776,7 @@ png_handle_sBIT(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 }
 #endif

-#if defined(PNG_READ_cHRM_SUPPORTED)
+#ifdef PNG_READ_cHRM_SUPPORTED
 void /* PRIVATE */
 png_handle_cHRM(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 {
@@ -790,7 +804,7 @@ png_handle_cHRM(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
      png_warning(png_ptr, "Missing PLTE before cHRM");

   if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM)
-#if defined(PNG_READ_sRGB_SUPPORTED)
+#ifdef PNG_READ_sRGB_SUPPORTED
      && !(info_ptr->valid & PNG_INFO_sRGB)
 #endif
      )
@@ -842,7 +856,7 @@ png_handle_cHRM(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
   blue_y  = (float)int_y_blue  / (float)100000.0;
 #endif

-#if defined(PNG_READ_sRGB_SUPPORTED)
+#ifdef PNG_READ_sRGB_SUPPORTED
   if ((info_ptr != NULL) && (info_ptr->valid & PNG_INFO_sRGB))
      {
      if (PNG_OUT_OF_RANGE(int_x_white, 31270,  1000) ||
@@ -856,7 +870,7 @@ png_handle_cHRM(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
         {
            png_warning(png_ptr,
              "Ignoring incorrect cHRM value when sRGB is also present");
-#ifndef PNG_NO_CONSOLE_IO
+#ifdef PNG_CONSOLE_IO_SUPPORTED
 #ifdef PNG_FLOATING_POINT_SUPPORTED
            fprintf(stderr, "wx=%f, wy=%f, rx=%f, ry=%f\n",
               white_x, white_y, red_x, red_y);
@@ -868,7 +882,7 @@ png_handle_cHRM(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
            fprintf(stderr, "gx=%ld, gy=%ld, bx=%ld, by=%ld\n",
               int_x_green, int_y_green, int_x_blue, int_y_blue);
 #endif
-#endif /* PNG_NO_CONSOLE_IO */
+#endif /* PNG_CONSOLE_IO_SUPPORTED */
         }
         return;
      }
@@ -886,7 +900,7 @@ png_handle_cHRM(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 }
 #endif

-#if defined(PNG_READ_sRGB_SUPPORTED)
+#ifdef PNG_READ_sRGB_SUPPORTED
 void /* PRIVATE */
 png_handle_sRGB(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 {
@@ -948,7 +962,7 @@ png_handle_sRGB(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
      {
         png_warning(png_ptr,
           "Ignoring incorrect gAMA value when sRGB is also present");
-#ifndef PNG_NO_CONSOLE_IO
+#ifdef PNG_CONSOLE_IO_SUPPORTED
 #  ifdef PNG_FIXED_POINT_SUPPORTED
         fprintf(stderr, "incorrect gamma=(%d/100000)\n",
            (int)png_ptr->int_gamma);
@@ -984,7 +998,7 @@ png_handle_sRGB(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 }
 #endif /* PNG_READ_sRGB_SUPPORTED */

-#if defined(PNG_READ_iCCP_SUPPORTED)
+#ifdef PNG_READ_iCCP_SUPPORTED
 void /* PRIVATE */
 png_handle_iCCP(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 /* Note: this does not properly handle chunks that are > 64K under DOS */
@@ -1104,14 +1118,14 @@ png_handle_iCCP(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 }
 #endif /* PNG_READ_iCCP_SUPPORTED */

-#if defined(PNG_READ_sPLT_SUPPORTED)
+#ifdef PNG_READ_sPLT_SUPPORTED
 void /* PRIVATE */
 png_handle_sPLT(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 /* Note: this does not properly handle chunks that are > 64K under DOS */
 {
   png_bytep entry_start;
   png_sPLT_t new_palette;
-#ifdef PNG_NO_POINTER_INDEXING
+#ifdef PNG_POINTER_INDEXING_SUPPORTED
   png_sPLT_entryp pp;
 #endif
   int data_length, entry_size, i;
@@ -1211,10 +1225,10 @@ png_handle_sPLT(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
       return;
   }

-#ifndef PNG_NO_POINTER_INDEXING
+#ifdef PNG_POINTER_INDEXING_SUPPORTED
   for (i = 0; i < new_palette.nentries; i++)
   {
-      png_sPLT_entryp pp = new_palette.entries + i;
+      pp = new_palette.entries + i;

      if (new_palette.depth == 8)
      {
@@ -1266,7 +1280,7 @@ png_handle_sPLT(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 }
 #endif /* PNG_READ_sPLT_SUPPORTED */

-#if defined(PNG_READ_tRNS_SUPPORTED)
+#ifdef PNG_READ_tRNS_SUPPORTED
 void /* PRIVATE */
 png_handle_tRNS(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 {
@@ -1361,7 +1375,7 @@ png_handle_tRNS(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 }
 #endif

-#if defined(PNG_READ_bKGD_SUPPORTED)
+#ifdef PNG_READ_bKGD_SUPPORTED
 void /* PRIVATE */
 png_handle_bKGD(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 {
@@ -1450,7 +1464,7 @@ png_handle_bKGD(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 }
 #endif

-#if defined(PNG_READ_hIST_SUPPORTED)
+#ifdef PNG_READ_hIST_SUPPORTED
 void /* PRIVATE */
 png_handle_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 {
@@ -1504,7 +1518,7 @@ png_handle_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 }
 #endif

-#if defined(PNG_READ_pHYs_SUPPORTED)
+#ifdef PNG_READ_pHYs_SUPPORTED
 void /* PRIVATE */
 png_handle_pHYs(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 {
@@ -1547,7 +1561,7 @@ png_handle_pHYs(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 }
 #endif

-#if defined(PNG_READ_oFFs_SUPPORTED)
+#ifdef PNG_READ_oFFs_SUPPORTED
 void /* PRIVATE */
 png_handle_oFFs(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 {
@@ -1590,7 +1604,7 @@ png_handle_oFFs(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 }
 #endif

-#if defined(PNG_READ_pCAL_SUPPORTED)
+#ifdef PNG_READ_pCAL_SUPPORTED
 /* Read the pCAL chunk (described in the PNG Extensions document) */
 void /* PRIVATE */
 png_handle_pCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
@@ -1724,7 +1738,7 @@ png_handle_pCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 }
 #endif

-#if defined(PNG_READ_sCAL_SUPPORTED)
+#ifdef PNG_READ_sCAL_SUPPORTED
 /* Read the sCAL chunk */
 void /* PRIVATE */
 png_handle_sCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
@@ -1867,7 +1881,7 @@ png_handle_sCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 }
 #endif

-#if defined(PNG_READ_tIME_SUPPORTED)
+#ifdef PNG_READ_tIME_SUPPORTED
 void /* PRIVATE */
 png_handle_tIME(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 {
@@ -1910,7 +1924,7 @@ png_handle_tIME(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 }
 #endif

-#if defined(PNG_READ_tEXt_SUPPORTED)
+#ifdef PNG_READ_tEXt_SUPPORTED
 /* Note: this does not properly handle chunks that are > 64K under DOS */
 void /* PRIVATE */
 png_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
@@ -2013,7 +2027,7 @@ png_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 }
 #endif

-#if defined(PNG_READ_zTXt_SUPPORTED)
+#ifdef PNG_READ_zTXt_SUPPORTED
 /* Note: this does not correctly handle chunks that are > 64K under DOS */
 void /* PRIVATE */
 png_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
@@ -2133,7 +2147,7 @@ png_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 }
 #endif

-#if defined(PNG_READ_iTXt_SUPPORTED)
+#ifdef PNG_READ_iTXt_SUPPORTED
 /* Note: this does not correctly handle chunks that are > 64K under DOS */
 void /* PRIVATE */
 png_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
@@ -2310,19 +2324,17 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)

   if (png_ptr->mode & PNG_HAVE_IDAT)
   {
-#ifdef PNG_USE_LOCAL_ARRAYS
-      PNG_CONST PNG_IDAT;
-#endif
+      PNG_IDAT;
      if (png_memcmp(png_ptr->chunk_name, png_IDAT, 4))  /* Not an IDAT */
         png_ptr->mode |= PNG_AFTER_IDAT;
   }

   if (!(png_ptr->chunk_name[0] & 0x20))
   {
-#if defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
      if (png_handle_as_unknown(png_ptr, png_ptr->chunk_name) !=
           PNG_HANDLE_CHUNK_ALWAYS
-#if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
+#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
           && png_ptr->read_user_chunk_fn == NULL
 #endif
        )
@@ -2330,9 +2342,9 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
          png_chunk_error(png_ptr, "unknown critical chunk");
   }

-#if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
+#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
   if ((png_ptr->flags & PNG_FLAG_KEEP_UNKNOWN_CHUNKS)
-#if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
+#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
       || (png_ptr->read_user_chunk_fn != NULL)
 #endif
        )
@@ -2357,7 +2369,7 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
         png_ptr->unknown_chunk.data = (png_bytep)png_malloc(png_ptr, length);
         png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length);
       }
-#if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
+#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
       if (png_ptr->read_user_chunk_fn != NULL)
       {
          /* Callback to user unknown chunk handler */
@@ -2369,7 +2381,7 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
          if (ret == 0)
          {
             if (!(png_ptr->chunk_name[0] & 0x20))
-#if defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
                if (png_handle_as_unknown(png_ptr, png_ptr->chunk_name) !=
                     PNG_HANDLE_CHUNK_ALWAYS)
 #endif
@@ -2390,7 +2402,7 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)

   png_crc_finish(png_ptr, skip);

-#if !defined(PNG_READ_USER_CHUNKS_SUPPORTED)
+#ifndef PNG_READ_USER_CHUNKS_SUPPORTED
   info_ptr = info_ptr; /* Quiet compiler warnings about unused info_ptr */
 #endif
 }
@@ -2448,7 +2460,7 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
            png_uint_32 i;
            png_uint_32 row_width = png_ptr->width;

-#if defined(PNG_READ_PACKSWAP_SUPPORTED)
+#ifdef PNG_READ_PACKSWAP_SUPPORTED
            if (png_ptr->transformations & PNG_PACKSWAP)
            {
                s_start = 0;
@@ -2503,7 +2515,7 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
            png_uint_32 row_width = png_ptr->width;
            int value;

-#if defined(PNG_READ_PACKSWAP_SUPPORTED)
+#ifdef PNG_READ_PACKSWAP_SUPPORTED
            if (png_ptr->transformations & PNG_PACKSWAP)
            {
               s_start = 0;
@@ -2555,7 +2567,7 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
            png_uint_32 row_width = png_ptr->width;
            int value;

-#if defined(PNG_READ_PACKSWAP_SUPPORTED)
+#ifdef PNG_READ_PACKSWAP_SUPPORTED
            if (png_ptr->transformations & PNG_PACKSWAP)
            {
               s_start = 0;
@@ -2638,11 +2650,9 @@ png_do_read_interlace(png_structp png_ptr)
   png_bytep row = png_ptr->row_buf + 1;
   int pass = png_ptr->pass;
   png_uint_32 transformations = png_ptr->transformations;
-#ifdef PNG_USE_LOCAL_ARRAYS
   /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
   /* Offset to next interlace block */
   PNG_CONST int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
-#endif

   png_debug(1, "in png_do_read_interlace");
   if (row != NULL && row_info != NULL)
@@ -2664,7 +2674,7 @@ png_do_read_interlace(png_structp png_ptr)
            png_uint_32 i;
            int j;

-#if defined(PNG_READ_PACKSWAP_SUPPORTED)
+#ifdef PNG_READ_PACKSWAP_SUPPORTED
            if (transformations & PNG_PACKSWAP)
            {
                sshift = (int)((row_info->width + 7) & 0x07);
@@ -2717,7 +2727,7 @@ png_do_read_interlace(png_structp png_ptr)
            int jstop = png_pass_inc[pass];
            png_uint_32 i;

-#if defined(PNG_READ_PACKSWAP_SUPPORTED)
+#ifdef PNG_READ_PACKSWAP_SUPPORTED
            if (transformations & PNG_PACKSWAP)
            {
               sshift = (int)(((row_info->width + 3) & 0x03) << 1);
@@ -2773,7 +2783,7 @@ png_do_read_interlace(png_structp png_ptr)
            png_uint_32 i;
            int jstop = png_pass_inc[pass];

-#if defined(PNG_READ_PACKSWAP_SUPPORTED)
+#ifdef PNG_READ_PACKSWAP_SUPPORTED
            if (transformations & PNG_PACKSWAP)
            {
               sshift = (int)(((row_info->width + 1) & 0x01) << 2);
@@ -2847,7 +2857,7 @@ png_do_read_interlace(png_structp png_ptr)
      row_info->width = final_width;
      row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, final_width);
   }
-#if !defined(PNG_READ_PACKSWAP_SUPPORTED)
+#ifndef PNG_READ_PACKSWAP_SUPPORTED
   transformations = transformations; /* Silence compiler warning */
 #endif
 }
@@ -2976,11 +2986,10 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep row,
   }
 }

-#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
+#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
 void /* PRIVATE */
 png_read_finish_row(png_structp png_ptr)
 {
-#ifdef PNG_USE_LOCAL_ARRAYS
 #ifdef PNG_READ_INTERLACING_SUPPORTED
   /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */

@@ -2996,7 +3005,6 @@ png_read_finish_row(png_structp png_ptr)
   /* Offset to next interlace block in the y direction */
   PNG_CONST int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
 #endif /* PNG_READ_INTERLACING_SUPPORTED */
-#endif

   png_debug(1, "in png_read_finish_row");
   png_ptr->row_number++;
@@ -3042,9 +3050,7 @@ png_read_finish_row(png_structp png_ptr)

   if (!(png_ptr->flags & PNG_FLAG_ZLIB_FINISHED))
   {
-#ifdef PNG_USE_LOCAL_ARRAYS
-      PNG_CONST PNG_IDAT;
-#endif
+      PNG_IDAT;
      char extra;
      int ret;

@@ -3108,12 +3114,11 @@ png_read_finish_row(png_structp png_ptr)

   png_ptr->mode |= PNG_AFTER_IDAT;
 }
-#endif /* PNG_NO_SEQUENTIAL_READ_SUPPORTED */
+#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */

 void /* PRIVATE */
 png_read_start_row(png_structp png_ptr)
 {
-#ifdef PNG_USE_LOCAL_ARRAYS
 #ifdef PNG_READ_INTERLACING_SUPPORTED
   /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */

@@ -3128,7 +3133,6 @@ png_read_start_row(png_structp png_ptr)

   /* Offset to next interlace block in the y direction */
   PNG_CONST int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
-#endif
 #endif

   int max_pixel_depth;
@@ -3163,12 +3167,12 @@ png_read_start_row(png_structp png_ptr)
   }
   max_pixel_depth = png_ptr->pixel_depth;

-#if defined(PNG_READ_PACK_SUPPORTED)
+#ifdef PNG_READ_PACK_SUPPORTED
   if ((png_ptr->transformations & PNG_PACK) && png_ptr->bit_depth < 8)
      max_pixel_depth = 8;
 #endif

-#if defined(PNG_READ_EXPAND_SUPPORTED)
+#ifdef PNG_READ_EXPAND_SUPPORTED
   if (png_ptr->transformations & PNG_EXPAND)
   {
      if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
@@ -3196,7 +3200,7 @@ png_read_start_row(png_structp png_ptr)
   }
 #endif

-#if defined(PNG_READ_FILLER_SUPPORTED)
+#ifdef PNG_READ_FILLER_SUPPORTED
   if (png_ptr->transformations & (PNG_FILLER))
   {
      if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
@@ -3218,14 +3222,14 @@ png_read_start_row(png_structp png_ptr)
   }
 #endif

-#if defined(PNG_READ_GRAY_TO_RGB_SUPPORTED)
+#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
   if (png_ptr->transformations & PNG_GRAY_TO_RGB)
   {
      if (
-#if defined(PNG_READ_EXPAND_SUPPORTED)
+#ifdef PNG_READ_EXPAND_SUPPORTED
        (png_ptr->num_trans && (png_ptr->transformations & PNG_EXPAND)) ||
 #endif
-#if defined(PNG_READ_FILLER_SUPPORTED)
+#ifdef PNG_READ_FILLER_SUPPORTED
        (png_ptr->transformations & (PNG_FILLER)) ||
 #endif
        png_ptr->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
@@ -3277,15 +3281,26 @@ defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
      png_error(png_ptr, "This image requires a row greater than 64KB");
 #endif

-   if (row_bytes + 64 > png_ptr->old_big_row_buf_size)
+   if (row_bytes + 48 > png_ptr->old_big_row_buf_size)
   {
     png_free(png_ptr, png_ptr->big_row_buf);
+     png_ptr->big_row_buf = (png_bytep)png_malloc(png_ptr, row_bytes + 48);
     if (png_ptr->interlaced)
-       png_ptr->big_row_buf = (png_bytep)png_calloc(png_ptr, row_bytes + 64);
-     else
-      png_ptr->big_row_buf = (png_bytep)png_malloc(png_ptr, row_bytes + 64);
+       png_memset(png_ptr->big_row_buf, 0, row_bytes + 48);
+     png_ptr->old_big_row_buf_size = row_bytes + 48;
+
+#ifdef PNG_ALIGNED_MEMORY_SUPPORTED
+     /* Use 16-byte aligned memory for row_buf with at least 16 bytes
+      * of padding before and after row_buf.
+      */
+     png_ptr->row_buf = png_ptr->big_row_buf + 32
+         - (((png_alloc_size_t)&(png_ptr->big_row_buf[0]) + 15) % 16);
+     png_ptr->old_big_row_buf_size = row_bytes + 48;
+#else
+     /* Use 32 bytes of padding before and 16 bytes after row_buf. */
     png_ptr->row_buf = png_ptr->big_row_buf + 32;
-     png_ptr->old_big_row_buf_size = row_bytes + 64;
+#endif
+     png_ptr->old_big_row_buf_size = row_bytes + 48;
   }

 #ifdef PNG_MAX_MALLOC_64K
@@ -3295,12 +3310,12 @@ defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
   if ((png_uint_32)png_ptr->rowbytes > (png_uint_32)(PNG_SIZE_MAX - 1))
      png_error(png_ptr, "Row has too many bytes to allocate in memory");

-   if (png_ptr->rowbytes+1 > png_ptr->old_prev_row_size)
+   if (png_ptr->rowbytes + 1 > png_ptr->old_prev_row_size)
   {
-     png_free(png_ptr, png_ptr->prev_row);
-     png_ptr->prev_row = (png_bytep)png_malloc(png_ptr, (png_uint_32)(
+      png_free(png_ptr, png_ptr->prev_row);
+      png_ptr->prev_row = (png_bytep)png_malloc(png_ptr, (png_uint_32)(
        png_ptr->rowbytes + 1));
-     png_ptr->old_prev_row_size = png_ptr->rowbytes+1;
+      png_ptr->old_prev_row_size = png_ptr->rowbytes + 1;
   }

   png_memset(png_ptr->prev_row, 0, png_ptr->rowbytes + 1);
--- a/pngset.c
+++ b/pngset.c
@@ -1,7 +1,7 @@

 /* pngset.c - storage of image information into info struct
 *
- * Last changed in libpng 1.4.0 [June 27, 2009]
+ * Last changed in libpng 1.4.0 [November 22, 2009]
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -20,11 +20,12 @@
 #if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
 #include "pngpriv.h"

-#if defined(PNG_bKGD_SUPPORTED)
+#ifdef PNG_bKGD_SUPPORTED
 void PNGAPI
 png_set_bKGD(png_structp png_ptr, png_infop info_ptr, png_color_16p background)
 {
   png_debug1(1, "in %s storage function", "bKGD");
+
   if (png_ptr == NULL || info_ptr == NULL)
      return;

@@ -33,7 +34,7 @@ png_set_bKGD(png_structp png_ptr, png_infop info_ptr, png_color_16p background)
 }
 #endif

-#if defined(PNG_cHRM_SUPPORTED)
+#ifdef PNG_cHRM_SUPPORTED
 #ifdef PNG_FLOATING_POINT_SUPPORTED
 void PNGAPI
 png_set_cHRM(png_structp png_ptr, png_infop info_ptr,
@@ -41,6 +42,7 @@ png_set_cHRM(png_structp png_ptr, png_infop info_ptr,
   double green_x, double green_y, double blue_x, double blue_y)
 {
   png_debug1(1, "in %s storage function", "cHRM");
+
   if (png_ptr == NULL || info_ptr == NULL)
      return;

@@ -74,10 +76,11 @@ png_set_cHRM_fixed(png_structp png_ptr, png_infop info_ptr,
   png_fixed_point blue_x, png_fixed_point blue_y)
 {
   png_debug1(1, "in %s storage function", "cHRM fixed");
+
   if (png_ptr == NULL || info_ptr == NULL)
      return;

-#if !defined(PNG_NO_CHECK_cHRM)
+#ifdef PNG_CHECK_cHRM_SUPPORTED
   if (png_check_cHRM_fixed(png_ptr,
      white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y))
 #endif
@@ -106,13 +109,15 @@ png_set_cHRM_fixed(png_structp png_ptr, png_infop info_ptr,
 #endif /* PNG_FIXED_POINT_SUPPORTED */
 #endif /* PNG_cHRM_SUPPORTED */

-#if defined(PNG_gAMA_SUPPORTED)
+#ifdef PNG_gAMA_SUPPORTED
 #ifdef PNG_FLOATING_POINT_SUPPORTED
 void PNGAPI
 png_set_gAMA(png_structp png_ptr, png_infop info_ptr, double file_gamma)
 {
   double png_gamma;
+
   png_debug1(1, "in %s storage function", "gAMA");
+
   if (png_ptr == NULL || info_ptr == NULL)
      return;

@@ -140,6 +145,7 @@ png_set_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point
   png_fixed_point png_gamma;

   png_debug1(1, "in %s storage function", "gAMA");
+
   if (png_ptr == NULL || info_ptr == NULL)
      return;

@@ -170,15 +176,17 @@ png_set_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point
 }
 #endif

-#if defined(PNG_hIST_SUPPORTED)
+#ifdef PNG_hIST_SUPPORTED
 void PNGAPI
 png_set_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p hist)
 {
   int i;

   png_debug1(1, "in %s storage function", "hIST");
+
   if (png_ptr == NULL || info_ptr == NULL)
      return;
+
   if (info_ptr->num_palette == 0 || info_ptr->num_palette
       > PNG_MAX_PALETTE_LENGTH)
   {
@@ -187,9 +195,7 @@ png_set_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p hist)
      return;
   }

-#ifdef PNG_FREE_ME_SUPPORTED
   png_free_data(png_ptr, info_ptr, PNG_FREE_HIST, 0);
-#endif
   /* Changed from info->num_palette to PNG_MAX_PALETTE_LENGTH in
    * version 1.2.1
    */
@@ -206,11 +212,7 @@ png_set_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p hist)
   info_ptr->hist = png_ptr->hist;
   info_ptr->valid |= PNG_INFO_hIST;

-#ifdef PNG_FREE_ME_SUPPORTED
   info_ptr->free_me |= PNG_FREE_HIST;
-#else
-   png_ptr->flags |= PNG_FLAG_FREE_HIST;
-#endif
 }
 #endif

@@ -221,85 +223,22 @@ png_set_IHDR(png_structp png_ptr, png_infop info_ptr,
   int filter_type)
 {
   png_debug1(1, "in %s storage function", "IHDR");
+
   if (png_ptr == NULL || info_ptr == NULL)
      return;

-   /* Check for width and height valid values */
-   if (width == 0 || height == 0)
-      png_error(png_ptr, "Image width or height is zero in IHDR");
-#ifdef PNG_SET_USER_LIMITS_SUPPORTED
-   if (width > png_ptr->user_width_max || height > png_ptr->user_height_max)
-      png_error(png_ptr, "image size exceeds user limits in IHDR");
-#else
-   if (width > PNG_USER_WIDTH_MAX || height > PNG_USER_HEIGHT_MAX)
-      png_error(png_ptr, "image size exceeds user limits in IHDR");
-#endif
-   if (width > PNG_UINT_31_MAX || height > PNG_UINT_31_MAX)
-      png_error(png_ptr, "Invalid image size in IHDR");
-   if ( width > (PNG_UINT_32_MAX
-                 >> 3)      /* 8-byte RGBA pixels */
-                 - 64       /* bigrowbuf hack */
-                 - 1        /* filter byte */
-                 - 7*8      /* rounding of width to multiple of 8 pixels */
-                 - 8)       /* extra max_pixel_depth pad */
-      png_warning(png_ptr, "Width is too large for libpng to process pixels");
-
-   /* Check other values */
-   if (bit_depth != 1 && bit_depth != 2 && bit_depth != 4 &&
-       bit_depth != 8 && bit_depth != 16)
-      png_error(png_ptr, "Invalid bit depth in IHDR");
-
-   if (color_type < 0 || color_type == 1 ||
-       color_type == 5 || color_type > 6)
-      png_error(png_ptr, "Invalid color type in IHDR");
-
-   if (((color_type == PNG_COLOR_TYPE_PALETTE) && bit_depth > 8) ||
-       ((color_type == PNG_COLOR_TYPE_RGB ||
-         color_type == PNG_COLOR_TYPE_GRAY_ALPHA ||
-         color_type == PNG_COLOR_TYPE_RGB_ALPHA) && bit_depth < 8))
-      png_error(png_ptr, "Invalid color type/bit depth combination in IHDR");
-
-   if (interlace_type >= PNG_INTERLACE_LAST)
-      png_error(png_ptr, "Unknown interlace method in IHDR");
-
-   if (compression_type != PNG_COMPRESSION_TYPE_BASE)
-      png_error(png_ptr, "Unknown compression method in IHDR");
-
-#if defined(PNG_MNG_FEATURES_SUPPORTED)
-   /* Accept filter_method 64 (intrapixel differencing) only if
-    * 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and
-    * 2. Libpng did not read a PNG signature (this filter_method is only
-    *    used in PNG datastreams that are embedded in MNG datastreams) and
-    * 3. The application called png_permit_mng_features with a mask that
-    *    included PNG_FLAG_MNG_FILTER_64 and
-    * 4. The filter_method is 64 and
-    * 5. The color_type is RGB or RGBA
-    */
-   if ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE)&&png_ptr->mng_features_permitted)
-      png_warning(png_ptr, "MNG features are not allowed in a PNG datastream");
-   if (filter_type != PNG_FILTER_TYPE_BASE)
-   {
-     if (!((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
-         (filter_type == PNG_INTRAPIXEL_DIFFERENCING) &&
-         ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) == 0) &&
-         (color_type == PNG_COLOR_TYPE_RGB ||
-         color_type == PNG_COLOR_TYPE_RGB_ALPHA)))
-        png_error(png_ptr, "Unknown filter method in IHDR");
-     if (png_ptr->mode&PNG_HAVE_PNG_SIGNATURE)
-        png_warning(png_ptr, "Invalid filter method in IHDR");
-   }
-#else
-   if (filter_type != PNG_FILTER_TYPE_BASE)
-      png_error(png_ptr, "Unknown filter method in IHDR");
-#endif
-
   info_ptr->width = width;
   info_ptr->height = height;
   info_ptr->bit_depth = (png_byte)bit_depth;
-   info_ptr->color_type =(png_byte) color_type;
+   info_ptr->color_type = (png_byte)color_type;
   info_ptr->compression_type = (png_byte)compression_type;
   info_ptr->filter_type = (png_byte)filter_type;
   info_ptr->interlace_type = (png_byte)interlace_type;
+
+   png_check_IHDR (png_ptr, info_ptr->width, info_ptr->height,
+       info_ptr->bit_depth, info_ptr->color_type, info_ptr->interlace_type,
+       info_ptr->compression_type, info_ptr->filter_type);
+
   if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
      info_ptr->channels = 1;
   else if (info_ptr->color_type & PNG_COLOR_MASK_COLOR)
@@ -322,12 +261,13 @@ png_set_IHDR(png_structp png_ptr, png_infop info_ptr,
      info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth, width);
 }

-#if defined(PNG_oFFs_SUPPORTED)
+#ifdef PNG_oFFs_SUPPORTED
 void PNGAPI
 png_set_oFFs(png_structp png_ptr, png_infop info_ptr,
   png_int_32 offset_x, png_int_32 offset_y, int unit_type)
 {
   png_debug1(1, "in %s storage function", "oFFs");
+
   if (png_ptr == NULL || info_ptr == NULL)
      return;

@@ -338,7 +278,7 @@ png_set_oFFs(png_structp png_ptr, png_infop info_ptr,
 }
 #endif

-#if defined(PNG_pCAL_SUPPORTED)
+#ifdef PNG_pCAL_SUPPORTED
 void PNGAPI
 png_set_pCAL(png_structp png_ptr, png_infop info_ptr,
   png_charp purpose, png_int_32 X0, png_int_32 X1, int type, int nparams,
@@ -348,6 +288,7 @@ png_set_pCAL(png_structp png_ptr, png_infop info_ptr,
   int i;

   png_debug1(1, "in %s storage function", "pCAL");
+
   if (png_ptr == NULL || info_ptr == NULL)
      return;

@@ -404,9 +345,7 @@ png_set_pCAL(png_structp png_ptr, png_infop info_ptr,
   }

   info_ptr->valid |= PNG_INFO_pCAL;
-#ifdef PNG_FREE_ME_SUPPORTED
   info_ptr->free_me |= PNG_FREE_PCAL;
-#endif
 }
 #endif

@@ -417,6 +356,7 @@ png_set_sCAL(png_structp png_ptr, png_infop info_ptr,
             int unit, double width, double height)
 {
   png_debug1(1, "in %s storage function", "sCAL");
+
   if (png_ptr == NULL || info_ptr == NULL)
      return;

@@ -435,6 +375,7 @@ png_set_sCAL_s(png_structp png_ptr, png_infop info_ptr,
   png_size_t length;

   png_debug1(1, "in %s storage function", "sCAL");
+
   if (png_ptr == NULL || info_ptr == NULL)
      return;

@@ -466,20 +407,19 @@ png_set_sCAL_s(png_structp png_ptr, png_infop info_ptr,
   }
   png_memcpy(info_ptr->scal_s_height, sheight, length);
   info_ptr->valid |= PNG_INFO_sCAL;
-#ifdef PNG_FREE_ME_SUPPORTED
   info_ptr->free_me |= PNG_FREE_SCAL;
-#endif
 }
 #endif
 #endif
 #endif

-#if defined(PNG_pHYs_SUPPORTED)
+#ifdef PNG_pHYs_SUPPORTED
 void PNGAPI
 png_set_pHYs(png_structp png_ptr, png_infop info_ptr,
   png_uint_32 res_x, png_uint_32 res_y, int unit_type)
 {
   png_debug1(1, "in %s storage function", "pHYs");
+
   if (png_ptr == NULL || info_ptr == NULL)
      return;

@@ -496,6 +436,7 @@ png_set_PLTE(png_structp png_ptr, png_infop info_ptr,
 {

   png_debug1(1, "in %s storage function", "PLTE");
+
   if (png_ptr == NULL || info_ptr == NULL)
      return;

@@ -515,42 +456,30 @@ png_set_PLTE(png_structp png_ptr, png_infop info_ptr,
    * we do it for backward compatibility with the way the png_handle_tRNS
    * function used to do the allocation.
    */
-#ifdef PNG_FREE_ME_SUPPORTED
   png_free_data(png_ptr, info_ptr, PNG_FREE_PLTE, 0);
-#endif

   /* Changed in libpng-1.2.1 to allocate PNG_MAX_PALETTE_LENGTH instead
    * of num_palette entries, in case of an invalid PNG file that has
    * too-large sample values.
    */
-#ifdef PNG_CALLOC_SUPPORTED
   png_ptr->palette = (png_colorp)png_calloc(png_ptr,
      PNG_MAX_PALETTE_LENGTH * png_sizeof(png_color));
-#else
-   png_ptr->palette = (png_colorp)png_malloc(png_ptr,
-      PNG_MAX_PALETTE_LENGTH * png_sizeof(png_color));
-   png_memset(png_ptr->palette, 0, PNG_MAX_PALETTE_LENGTH *
-      png_sizeof(png_color));
-#endif
   png_memcpy(png_ptr->palette, palette, num_palette * png_sizeof(png_color));
   info_ptr->palette = png_ptr->palette;
   info_ptr->num_palette = png_ptr->num_palette = (png_uint_16)num_palette;

-#ifdef PNG_FREE_ME_SUPPORTED
   info_ptr->free_me |= PNG_FREE_PLTE;
-#else
-   png_ptr->flags |= PNG_FLAG_FREE_PLTE;
-#endif

   info_ptr->valid |= PNG_INFO_PLTE;
 }

-#if defined(PNG_sBIT_SUPPORTED)
+#ifdef PNG_sBIT_SUPPORTED
 void PNGAPI
 png_set_sBIT(png_structp png_ptr, png_infop info_ptr,
   png_color_8p sig_bit)
 {
   png_debug1(1, "in %s storage function", "sBIT");
+
   if (png_ptr == NULL || info_ptr == NULL)
      return;

@@ -559,11 +488,12 @@ png_set_sBIT(png_structp png_ptr, png_infop info_ptr,
 }
 #endif

-#if defined(PNG_sRGB_SUPPORTED)
+#ifdef PNG_sRGB_SUPPORTED
 void PNGAPI
 png_set_sRGB(png_structp png_ptr, png_infop info_ptr, int intent)
 {
   png_debug1(1, "in %s storage function", "sRGB");
+
   if (png_ptr == NULL || info_ptr == NULL)
      return;

@@ -575,7 +505,7 @@ void PNGAPI
 png_set_sRGB_gAMA_and_cHRM(png_structp png_ptr, png_infop info_ptr,
   int intent)
 {
-#if defined(PNG_gAMA_SUPPORTED)
+#ifdef PNG_gAMA_SUPPORTED
 #ifdef PNG_FLOATING_POINT_SUPPORTED
   float file_gamma;
 #endif
@@ -583,7 +513,7 @@ png_set_sRGB_gAMA_and_cHRM(png_structp png_ptr, png_infop info_ptr,
   png_fixed_point int_file_gamma;
 #endif
 #endif
-#if defined(PNG_cHRM_SUPPORTED)
+#ifdef PNG_cHRM_SUPPORTED
 #ifdef PNG_FLOATING_POINT_SUPPORTED
   float white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y;
 #endif
@@ -591,12 +521,13 @@ png_set_sRGB_gAMA_and_cHRM(png_structp png_ptr, png_infop info_ptr,
      int_green_y, int_blue_x, int_blue_y;
 #endif
   png_debug1(1, "in %s storage function", "sRGB_gAMA_and_cHRM");
+
   if (png_ptr == NULL || info_ptr == NULL)
      return;

   png_set_sRGB(png_ptr, info_ptr, intent);

-#if defined(PNG_gAMA_SUPPORTED)
+#ifdef PNG_gAMA_SUPPORTED
 #ifdef PNG_FLOATING_POINT_SUPPORTED
   file_gamma = (float).45455;
   png_set_gAMA(png_ptr, info_ptr, file_gamma);
@@ -607,7 +538,7 @@ png_set_sRGB_gAMA_and_cHRM(png_structp png_ptr, png_infop info_ptr,
 #endif
 #endif

-#if defined(PNG_cHRM_SUPPORTED)
+#ifdef PNG_cHRM_SUPPORTED
   int_white_x = 31270L;
   int_white_y = 32900L;
   int_red_x   = 64000L;
@@ -628,28 +559,21 @@ png_set_sRGB_gAMA_and_cHRM(png_structp png_ptr, png_infop info_ptr,
   blue_y  = (float).06;
 #endif

-#if !defined(PNG_NO_CHECK_cHRM)
-   if (png_check_cHRM_fixed(png_ptr,
-       int_white_x, int_white_y, int_red_x, int_red_y, int_green_x,
-       int_green_y, int_blue_x, int_blue_y))
-#endif
-   {
 #ifdef PNG_FIXED_POINT_SUPPORTED
-      png_set_cHRM_fixed(png_ptr, info_ptr,
-          int_white_x, int_white_y, int_red_x, int_red_y, int_green_x,
-          int_green_y, int_blue_x, int_blue_y);
+   png_set_cHRM_fixed(png_ptr, info_ptr,
+       int_white_x, int_white_y, int_red_x, int_red_y, int_green_x,
+       int_green_y, int_blue_x, int_blue_y);
 #endif
 #ifdef PNG_FLOATING_POINT_SUPPORTED
-      png_set_cHRM(png_ptr, info_ptr,
-          white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y);
+   png_set_cHRM(png_ptr, info_ptr,
+       white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y);
 #endif
-   }
 #endif /* cHRM */
 }
 #endif /* sRGB */


-#if defined(PNG_iCCP_SUPPORTED)
+#ifdef PNG_iCCP_SUPPORTED
 void PNGAPI
 png_set_iCCP(png_structp png_ptr, png_infop info_ptr,
             png_charp name, int compression_type,
@@ -660,6 +584,7 @@ png_set_iCCP(png_structp png_ptr, png_infop info_ptr,
   png_uint_32 length;

   png_debug1(1, "in %s storage function", "iCCP");
+
   if (png_ptr == NULL || info_ptr == NULL || name == NULL || profile == NULL)
      return;

@@ -689,14 +614,12 @@ png_set_iCCP(png_structp png_ptr, png_infop info_ptr,
   /* Compression is always zero but is here so the API and info structure
    * does not have to change if we introduce multiple compression types */
   info_ptr->iccp_compression = (png_byte)compression_type;
-#ifdef PNG_FREE_ME_SUPPORTED
   info_ptr->free_me |= PNG_FREE_ICCP;
-#endif
   info_ptr->valid |= PNG_INFO_iCCP;
 }
 #endif

-#if defined(PNG_TEXT_SUPPORTED)
+#ifdef PNG_TEXT_SUPPORTED
 void PNGAPI
 png_set_text(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
             int num_text)
@@ -713,7 +636,8 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
 {
   int i;

-   png_debug1(1, "in %s storage function", (png_ptr->chunk_name[0] == '\0' ?
+   png_debug1(1, "in %s storage function", ((png_ptr == NULL ||
+      png_ptr->chunk_name[0] == '\0') ?
      "text" : (png_const_charp)png_ptr->chunk_name));

   if (png_ptr == NULL || info_ptr == NULL || num_text == 0)
@@ -751,9 +675,7 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
            (png_size_t)(info_ptr->max_text * png_sizeof(png_text)));
         if (info_ptr->text == NULL)
            return(1);
-#ifdef PNG_FREE_ME_SUPPORTED
         info_ptr->free_me |= PNG_FREE_TEXT;
-#endif
      }
      png_debug1(3, "allocated %d entries for info_ptr->text",
         info_ptr->max_text);
@@ -774,10 +696,12 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
         lang_len = 0;
         lang_key_len = 0;
      }
+
      else
 #ifdef PNG_iTXt_SUPPORTED
      {
         /* Set iTXt data */
+
         if (text_ptr[i].lang != NULL)
            lang_len = png_strlen(text_ptr[i].lang);
         else
@@ -787,7 +711,7 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
         else
            lang_key_len = 0;
      }
-#else
+#else /* PNG_iTXt_SUPPORTED */
      {
         png_warning(png_ptr, "iTXt chunk not supported");
         continue;
@@ -804,6 +728,7 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
 #endif
            textp->compression = PNG_TEXT_COMPRESSION_NONE;
      }
+
      else
      {
         text_length = png_strlen(text_ptr[i].text);
@@ -855,6 +780,7 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
      }
      else
 #endif
+
      {
         textp->text_length = text_length;
 #ifdef PNG_iTXt_SUPPORTED
@@ -868,11 +794,12 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
 }
 #endif

-#if defined(PNG_tIME_SUPPORTED)
+#ifdef PNG_tIME_SUPPORTED
 void PNGAPI
 png_set_tIME(png_structp png_ptr, png_infop info_ptr, png_timep mod_time)
 {
   png_debug1(1, "in %s storage function", "tIME");
+
   if (png_ptr == NULL || info_ptr == NULL ||
       (png_ptr->mode & PNG_WROTE_tIME))
      return;
@@ -882,32 +809,30 @@ png_set_tIME(png_structp png_ptr, png_infop info_ptr, png_timep mod_time)
 }
 #endif

-#if defined(PNG_tRNS_SUPPORTED)
+#ifdef PNG_tRNS_SUPPORTED
 void PNGAPI
 png_set_tRNS(png_structp png_ptr, png_infop info_ptr,
-   png_bytep trans, int num_trans, png_color_16p trans_color)
+   png_bytep trans_alpha, int num_trans, png_color_16p trans_color)
 {
   png_debug1(1, "in %s storage function", "tRNS");
+
   if (png_ptr == NULL || info_ptr == NULL)
      return;

-   if (trans != NULL)
+   if (trans_alpha != NULL)
   {
-       /*
-        * It may not actually be necessary to set png_ptr->trans here;
+       /* It may not actually be necessary to set png_ptr->trans_alpha here;
        * we do it for backward compatibility with the way the png_handle_tRNS
        * function used to do the allocation.
        */

-#ifdef PNG_FREE_ME_SUPPORTED
       png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0);
-#endif

       /* Changed from num_trans to PNG_MAX_PALETTE_LENGTH in version 1.2.1 */
-       png_ptr->trans = info_ptr->trans = (png_bytep)png_malloc(png_ptr,
+       png_ptr->trans_alpha = info_ptr->trans_alpha = (png_bytep)png_malloc(png_ptr,
           (png_size_t)PNG_MAX_PALETTE_LENGTH);
       if (num_trans > 0 && num_trans <= PNG_MAX_PALETTE_LENGTH)
-          png_memcpy(info_ptr->trans, trans, (png_size_t)num_trans);
+          png_memcpy(info_ptr->trans_alpha, trans_alpha, (png_size_t)num_trans);
   }

   if (trans_color != NULL)
@@ -931,16 +856,12 @@ png_set_tRNS(png_structp png_ptr, png_infop info_ptr,
   if (num_trans != 0)
   {
      info_ptr->valid |= PNG_INFO_tRNS;
-#ifdef PNG_FREE_ME_SUPPORTED
      info_ptr->free_me |= PNG_FREE_TRNS;
-#else
-      png_ptr->flags |= PNG_FLAG_FREE_TRNS;
-#endif
   }
 }
 #endif

-#if defined(PNG_sPLT_SUPPORTED)
+#ifdef PNG_sPLT_SUPPORTED
 void PNGAPI
 png_set_sPLT(png_structp png_ptr,
             png_infop info_ptr, png_sPLT_tp entries, int nentries)
@@ -1006,13 +927,11 @@ png_set_sPLT(png_structp png_ptr,
   info_ptr->splt_palettes = np;
   info_ptr->splt_palettes_num += nentries;
   info_ptr->valid |= PNG_INFO_sPLT;
-#ifdef PNG_FREE_ME_SUPPORTED
   info_ptr->free_me |= PNG_FREE_SPLT;
-#endif
 }
 #endif /* PNG_sPLT_SUPPORTED */

-#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
 void PNGAPI
 png_set_unknown_chunks(png_structp png_ptr,
   png_infop info_ptr, png_unknown_chunkp unknowns, int num_unknowns)
@@ -1069,9 +988,7 @@ png_set_unknown_chunks(png_structp png_ptr,

   info_ptr->unknown_chunks = np;
   info_ptr->unknown_chunks_num += num_unknowns;
-#ifdef PNG_FREE_ME_SUPPORTED
   info_ptr->free_me |= PNG_FREE_UNKN;
-#endif
 }
 void PNGAPI
 png_set_unknown_chunk_location(png_structp png_ptr, png_infop info_ptr,
@@ -1084,11 +1001,12 @@ png_set_unknown_chunk_location(png_structp png_ptr, png_infop info_ptr,
 #endif


-#if defined(PNG_MNG_FEATURES_SUPPORTED)
+#ifdef PNG_MNG_FEATURES_SUPPORTED
 png_uint_32 PNGAPI
 png_permit_mng_features (png_structp png_ptr, png_uint_32 mng_features)
 {
   png_debug(1, "in png_permit_mng_features");
+
   if (png_ptr == NULL)
      return (png_uint_32)0;
   png_ptr->mng_features_permitted =
@@ -1097,7 +1015,7 @@ png_permit_mng_features (png_structp png_ptr, png_uint_32 mng_features)
 }
 #endif

-#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
 void PNGAPI
 png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_bytep
   chunk_list, int num_chunks)
@@ -1138,26 +1056,26 @@ png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_bytep
      *p=(png_byte)keep;
   png_ptr->num_chunk_list = old_num_chunks + num_chunks;
   png_ptr->chunk_list = new_list;
-#ifdef PNG_FREE_ME_SUPPORTED
   png_ptr->free_me |= PNG_FREE_LIST;
-#endif
 }
 #endif

-#if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
+#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
 void PNGAPI
 png_set_read_user_chunk_fn(png_structp png_ptr, png_voidp user_chunk_ptr,
   png_user_chunk_ptr read_user_chunk_fn)
 {
   png_debug(1, "in png_set_read_user_chunk_fn");
+
   if (png_ptr == NULL)
      return;
+
   png_ptr->read_user_chunk_fn = read_user_chunk_fn;
   png_ptr->user_chunk_ptr = user_chunk_ptr;
 }
 #endif

-#if defined(PNG_INFO_IMAGE_SUPPORTED)
+#ifdef PNG_INFO_IMAGE_SUPPORTED
 void PNGAPI
 png_set_rows(png_structp png_ptr, png_infop info_ptr, png_bytepp row_pointers)
 {
@@ -1229,11 +1147,12 @@ png_set_chunk_cache_max (png_structp png_ptr,
 #endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */


-#if defined(PNG_BENIGN_ERRORS_SUPPORTED)
+#ifdef PNG_BENIGN_ERRORS_SUPPORTED
 void PNGAPI
 png_set_benign_errors(png_structp png_ptr, int allowed)
 {
   png_debug(1, "in png_set_benign_errors");
+
   if (allowed)
      png_ptr->flags |= PNG_FLAG_BENIGN_ERRORS_WARN;
   else
--- a/pngtest.c
+++ b/pngtest.c
@@ -1,7 +1,7 @@

 /* pngtest.c - a simple test program to test libpng
 *
- * Last changed in libpng 1.4.0 [June 27, 2009]
+ * Last changed in libpng 1.4.0 [November 22, 2009]
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -38,7 +38,7 @@
 #  include <stdlib.h>
 #  define FCLOSE(file) fclose(file)

-#if defined(PNG_NO_STDIO)
+#ifndef PNG_STDIO_SUPPORTED
     typedef FILE                * png_FILE_p;
 #endif

@@ -55,7 +55,7 @@
 #define PNGTEST_TIMING
 */

-#ifdef PNG_NO_FLOATING_POINT_SUPPORTED
+#ifndef PNG_FLOATING_POINT_SUPPORTED
 #undef PNGTEST_TIMING
 #endif

@@ -64,7 +64,7 @@ static float t_start, t_stop, t_decode, t_encode, t_misc;
 #include <time.h>
 #endif

-#if defined(PNG_TIME_RFC1123_SUPPORTED)
+#ifdef PNG_TIME_RFC1123_SUPPORTED
 #define PNG_tIME_STRING_LENGTH 29
 static int tIME_chunk_present = 0;
 static char tIME_string[PNG_tIME_STRING_LENGTH] = "tIME chunk is not present";
@@ -130,7 +130,7 @@ write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
 }


-#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
+#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
 /* Example of using user transform callback (we don't transform anything,
 * but merely examine the row filters.  We set this to 256 rather than
 * 5 in case illegal filter values are present.)
@@ -146,7 +146,7 @@ count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data)
 }
 #endif

-#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
+#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
 /* Example of using user transform callback (we don't transform anything,
 * but merely count the zero samples)
 */
@@ -253,7 +253,7 @@ count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data)

 static int wrote_question = 0;

-#if defined(PNG_NO_STDIO)
+#ifndef PNG_STDIO_SUPPORTED
 /* START of code to validate stdio-free compilation */
 /* These copies of the default read/write functions come from pngrio.c and
 * pngwio.c.  They allow "don't include stdio" testing of the library.
@@ -327,7 +327,7 @@ pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
 }
 #endif /* USE_FAR_KEYWORD */

-#if defined(PNG_WRITE_FLUSH_SUPPORTED)
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
 static void
 pngtest_flush(png_structp png_ptr)
 {
@@ -430,7 +430,7 @@ pngtest_error(png_structp png_ptr, png_const_charp message)
    * actually OK in this case.
    */
 }
-#endif /* PNG_NO_STDIO */
+#endif /* !PNG_STDIO_SUPPORTED */
 /* END of code to validate stdio-free compilation */

 /* START of code to validate memory allocation and deallocation */
@@ -563,7 +563,7 @@ png_debug_free(png_structp png_ptr, png_voidp ptr)


 /* Demonstration of user chunk support of the sTER and vpAg chunks */
-#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED

 /* (sTER is a public chunk not yet known by libpng.  vpAg is a private
 chunk used in ImageMagick to store "virtual page" size).  */
@@ -684,12 +684,12 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
   read_ptr =
      png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
 #endif
-#if defined(PNG_NO_STDIO)
+#ifndef PNG_STDIO_SUPPORTED
   png_set_error_fn(read_ptr, (png_voidp)inname, pngtest_error,
       pngtest_warning);
 #endif

-#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
   user_chunk_data[0] = 0;
   user_chunk_data[1] = 0;
   user_chunk_data[2] = 0;
@@ -707,7 +707,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
   write_ptr =
      png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
 #endif
-#if defined(PNG_NO_STDIO)
+#ifndef PNG_STDIO_SUPPORTED
   png_set_error_fn(write_ptr, (png_voidp)inname, pngtest_error,
       pngtest_warning);
 #endif
@@ -769,7 +769,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
 #endif

   png_debug(0, "Initializing input and output streams");
-#if !defined(PNG_NO_STDIO)
+#ifdef PNG_STDIO_SUPPORTED
   png_init_io(read_ptr, fpin);
 #  ifdef PNG_WRITE_SUPPORTED
   png_init_io(write_ptr, fpout);
@@ -778,7 +778,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
   png_set_read_fn(read_ptr, (png_voidp)fpin, pngtest_read_data);
 #  ifdef PNG_WRITE_SUPPORTED
   png_set_write_fn(write_ptr, (png_voidp)fpout,  pngtest_write_data,
-#    if defined(PNG_WRITE_FLUSH_SUPPORTED)
+#    ifdef PNG_WRITE_FLUSH_SUPPORTED
      pngtest_flush);
 #    else
      NULL);
@@ -800,7 +800,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
      png_set_read_status_fn(read_ptr, NULL);
   }

-#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
+#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
   {
      int i;
      for (i = 0; i<256; i++)
@@ -808,19 +808,19 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
      png_set_read_user_transform_fn(read_ptr, count_filters);
   }
 #endif
-#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
+#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
   zero_samples = 0;
   png_set_write_user_transform_fn(write_ptr, count_zero_samples);
 #endif

-#if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
+#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
 #  ifndef PNG_HANDLE_CHUNK_ALWAYS
 #    define PNG_HANDLE_CHUNK_ALWAYS       3
 #  endif
   png_set_keep_unknown_chunks(read_ptr, PNG_HANDLE_CHUNK_ALWAYS,
      NULL, 0);
 #endif
-#if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
+#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
 #  ifndef PNG_HANDLE_CHUNK_IF_SAFE
 #    define PNG_HANDLE_CHUNK_IF_SAFE      2
 #  endif
@@ -839,15 +839,15 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
          &color_type, &interlace_type, &compression_type, &filter_type))
      {
         png_set_IHDR(write_ptr, write_info_ptr, width, height, bit_depth,
-#if defined(PNG_WRITE_INTERLACING_SUPPORTED)
+#ifdef PNG_WRITE_INTERLACING_SUPPORTED
            color_type, interlace_type, compression_type, filter_type);
 #else
            color_type, PNG_INTERLACE_NONE, compression_type, filter_type);
 #endif
      }
   }
-#if defined(PNG_FIXED_POINT_SUPPORTED)
-#if defined(PNG_cHRM_SUPPORTED)
+#ifdef PNG_FIXED_POINT_SUPPORTED
+#ifdef PNG_cHRM_SUPPORTED
   {
      png_fixed_point white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
         blue_y;
@@ -859,7 +859,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
      }
   }
 #endif
-#if defined(PNG_gAMA_SUPPORTED)
+#ifdef PNG_gAMA_SUPPORTED
   {
      png_fixed_point gamma;

@@ -868,8 +868,8 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
   }
 #endif
 #else /* Use floating point versions */
-#if defined(PNG_FLOATING_POINT_SUPPORTED)
-#if defined(PNG_cHRM_SUPPORTED)
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+#ifdef PNG_cHRM_SUPPORTED
   {
      double white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
         blue_y;
@@ -881,7 +881,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
      }
   }
 #endif
-#if defined(PNG_gAMA_SUPPORTED)
+#ifdef PNG_gAMA_SUPPORTED
   {
      double gamma;

@@ -891,7 +891,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
 #endif
 #endif /* Floating point */
 #endif /* Fixed point */
-#if defined(PNG_iCCP_SUPPORTED)
+#ifdef PNG_iCCP_SUPPORTED
   {
      png_charp name;
      png_charp profile;
@@ -906,7 +906,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
      }
   }
 #endif
-#if defined(PNG_sRGB_SUPPORTED)
+#ifdef PNG_sRGB_SUPPORTED
   {
      int intent;

@@ -921,7 +921,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
      if (png_get_PLTE(read_ptr, read_info_ptr, &palette, &num_palette))
         png_set_PLTE(write_ptr, write_info_ptr, palette, num_palette);
   }
-#if defined(PNG_bKGD_SUPPORTED)
+#ifdef PNG_bKGD_SUPPORTED
   {
      png_color_16p background;

@@ -931,7 +931,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
      }
   }
 #endif
-#if defined(PNG_hIST_SUPPORTED)
+#ifdef PNG_hIST_SUPPORTED
   {
      png_uint_16p hist;

@@ -939,7 +939,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
         png_set_hIST(write_ptr, write_info_ptr, hist);
   }
 #endif
-#if defined(PNG_oFFs_SUPPORTED)
+#ifdef PNG_oFFs_SUPPORTED
   {
      png_int_32 offset_x, offset_y;
      int unit_type;
@@ -951,7 +951,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
      }
   }
 #endif
-#if defined(PNG_pCAL_SUPPORTED)
+#ifdef PNG_pCAL_SUPPORTED
   {
      png_charp purpose, units;
      png_charpp params;
@@ -966,7 +966,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
      }
   }
 #endif
-#if defined(PNG_pHYs_SUPPORTED)
+#ifdef PNG_pHYs_SUPPORTED
   {
      png_uint_32 res_x, res_y;
      int unit_type;
@@ -975,7 +975,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
         png_set_pHYs(write_ptr, write_info_ptr, res_x, res_y, unit_type);
   }
 #endif
-#if defined(PNG_sBIT_SUPPORTED)
+#ifdef PNG_sBIT_SUPPORTED
   {
      png_color_8p sig_bit;

@@ -983,7 +983,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
         png_set_sBIT(write_ptr, write_info_ptr, sig_bit);
   }
 #endif
-#if defined(PNG_sCAL_SUPPORTED)
+#ifdef PNG_sCAL_SUPPORTED
 #ifdef PNG_FLOATING_POINT_SUPPORTED
   {
      int unit;
@@ -1010,7 +1010,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
 #endif
 #endif
 #endif
-#if defined(PNG_TEXT_SUPPORTED)
+#ifdef PNG_TEXT_SUPPORTED
   {
      png_textp text_ptr;
      int num_text;
@@ -1022,14 +1022,14 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
      }
   }
 #endif
-#if defined(PNG_tIME_SUPPORTED)
+#ifdef PNG_tIME_SUPPORTED
   {
      png_timep mod_time;

      if (png_get_tIME(read_ptr, read_info_ptr, &mod_time))
      {
         png_set_tIME(write_ptr, write_info_ptr, mod_time);
-#if defined(PNG_TIME_RFC1123_SUPPORTED)
+#ifdef PNG_TIME_RFC1123_SUPPORTED
         /* We have to use png_memcpy instead of "=" because the string
          * pointed to by png_convert_to_rfc1123() gets free'ed before
          * we use it.
@@ -1043,29 +1043,29 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
      }
   }
 #endif
-#if defined(PNG_tRNS_SUPPORTED)
+#ifdef PNG_tRNS_SUPPORTED
   {
-      png_bytep trans;
+      png_bytep trans_alpha;
      int num_trans;
      png_color_16p trans_color;

-      if (png_get_tRNS(read_ptr, read_info_ptr, &trans, &num_trans,
+      if (png_get_tRNS(read_ptr, read_info_ptr, &trans_alpha, &num_trans,
         &trans_color))
      {
-         int sample_max = (1 << read_info_ptr->bit_depth);
+         int sample_max = (1 << bit_depth);
         /* libpng doesn't reject a tRNS chunk with out-of-range samples */
-         if (!((read_info_ptr->color_type == PNG_COLOR_TYPE_GRAY &&
+         if (!((color_type == PNG_COLOR_TYPE_GRAY &&
             (int)trans_color->gray > sample_max) ||
-             (read_info_ptr->color_type == PNG_COLOR_TYPE_RGB &&
+             (color_type == PNG_COLOR_TYPE_RGB &&
             ((int)trans_color->red > sample_max ||
             (int)trans_color->green > sample_max ||
             (int)trans_color->blue > sample_max))))
-            png_set_tRNS(write_ptr, write_info_ptr, trans, num_trans,
+            png_set_tRNS(write_ptr, write_info_ptr, trans_alpha, num_trans,
               trans_color);
      }
   }
 #endif
-#if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
+#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
   {
      png_unknown_chunkp unknowns;
      int num_unknowns = (int)png_get_unknown_chunks(read_ptr, read_info_ptr,
@@ -1094,7 +1094,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
 */
   png_write_info(write_ptr, write_info_ptr);

-#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
   if (user_chunk_data[0] != 0)
   {
      png_byte png_sTER[5] = {115,  84,  69,  82, '\0'};
@@ -1188,17 +1188,17 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
      }
   }

-#if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
+#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
   png_free_data(read_ptr, read_info_ptr, PNG_FREE_UNKN, -1);
 #endif
-#if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
+#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
   png_free_data(write_ptr, write_info_ptr, PNG_FREE_UNKN, -1);
 #endif

   png_debug(0, "Reading and writing end_info data");

   png_read_end(read_ptr, end_info_ptr);
-#if defined(PNG_TEXT_SUPPORTED)
+#ifdef PNG_TEXT_SUPPORTED
   {
      png_textp text_ptr;
      int num_text;
@@ -1210,14 +1210,14 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
      }
   }
 #endif
-#if defined(PNG_tIME_SUPPORTED)
+#ifdef PNG_tIME_SUPPORTED
   {
      png_timep mod_time;

      if (png_get_tIME(read_ptr, end_info_ptr, &mod_time))
      {
         png_set_tIME(write_ptr, write_end_info_ptr, mod_time);
-#if defined(PNG_TIME_RFC1123_SUPPORTED)
+#ifdef PNG_TIME_RFC1123_SUPPORTED
         /* We have to use png_memcpy instead of "=" because the string
            pointed to by png_convert_to_rfc1123() gets free'ed before
            we use it */
@@ -1230,7 +1230,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
      }
   }
 #endif
-#if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
+#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
   {
      png_unknown_chunkp unknowns;
      int num_unknowns;
@@ -1457,7 +1457,7 @@ main(int argc, char *argv[])
 #endif
      for (i=2; i<argc; ++i)
      {
-#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
+#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
         int k;
 #endif
         int kerror;
@@ -1465,19 +1465,19 @@ main(int argc, char *argv[])
         kerror = test_one_file(argv[i], outname);
         if (kerror == 0)
         {
-#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
+#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
            fprintf(STDERR, "\n PASS (%lu zero samples)\n",
               (unsigned long)zero_samples);
 #else
            fprintf(STDERR, " PASS\n");
 #endif
-#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
+#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
            for (k = 0; k<256; k++)
               if (filters_used[k])
                  fprintf(STDERR, " Filter %d was used %lu times\n",
                     k, (unsigned long)filters_used[k]);
 #endif
-#if defined(PNG_TIME_RFC1123_SUPPORTED)
+#ifdef PNG_TIME_RFC1123_SUPPORTED
         if (tIME_chunk_present != 0)
            fprintf(STDERR, " tIME = %s\n", tIME_string);
         tIME_chunk_present = 0;
@@ -1537,23 +1537,23 @@ main(int argc, char *argv[])
         {
            if (verbose == 1 || i == 2)
            {
-#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
+#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
                int k;
 #endif
-#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
+#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
                fprintf(STDERR, "\n PASS (%lu zero samples)\n",
                   (unsigned long)zero_samples);
 #else
                fprintf(STDERR, " PASS\n");
 #endif
-#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
+#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
                for (k = 0; k<256; k++)
                   if (filters_used[k])
                      fprintf(STDERR, " Filter %d was used %lu times\n",
                         k,
                         (unsigned long)filters_used[k]);
 #endif
-#if defined(PNG_TIME_RFC1123_SUPPORTED)
+#ifdef PNG_TIME_RFC1123_SUPPORTED
             if (tIME_chunk_present != 0)
                fprintf(STDERR, " tIME = %s\n", tIME_string);
 #endif /* PNG_TIME_RFC1123_SUPPORTED */
@@ -1619,4 +1619,4 @@ main(int argc, char *argv[])
 }

 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_4_0beta66 your_png_h_is_not_version_1_4_0beta66;
+typedef version_1_4_0beta104 your_png_h_is_not_version_1_4_0beta104;
--- a/pngtest.png
+++ b/pngtest.png
--- a/pngtrans.c
+++ b/pngtrans.c
@@ -1,7 +1,7 @@

 /* pngtrans.c - transforms the data in a row (used by both readers and writers)
 *
- * Last changed in libpng 1.4.0 [June 27, 2009]
+ * Last changed in libpng 1.4.0 [November 22, 2009]
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -21,6 +21,7 @@ void PNGAPI
 png_set_bgr(png_structp png_ptr)
 {
   png_debug(1, "in png_set_bgr");
+
   if (png_ptr == NULL)
      return;
   png_ptr->transformations |= PNG_BGR;
@@ -33,6 +34,7 @@ void PNGAPI
 png_set_swap(png_structp png_ptr)
 {
   png_debug(1, "in png_set_swap");
+
   if (png_ptr == NULL)
      return;
   if (png_ptr->bit_depth == 16)
@@ -46,6 +48,7 @@ void PNGAPI
 png_set_packing(png_structp png_ptr)
 {
   png_debug(1, "in png_set_packing");
+
   if (png_ptr == NULL)
      return;
   if (png_ptr->bit_depth < 8)
@@ -62,6 +65,7 @@ void PNGAPI
 png_set_packswap(png_structp png_ptr)
 {
   png_debug(1, "in png_set_packswap");
+
   if (png_ptr == NULL)
      return;
   if (png_ptr->bit_depth < 8)
@@ -74,6 +78,7 @@ void PNGAPI
 png_set_shift(png_structp png_ptr, png_color_8p true_bits)
 {
   png_debug(1, "in png_set_shift");
+
   if (png_ptr == NULL)
      return;
   png_ptr->transformations |= PNG_SHIFT;
@@ -87,6 +92,7 @@ int PNGAPI
 png_set_interlace_handling(png_structp png_ptr)
 {
   png_debug(1, "in png_set_interlace handling");
+
   if (png_ptr && png_ptr->interlaced)
   {
      png_ptr->transformations |= PNG_INTERLACE;
@@ -107,10 +113,11 @@ void PNGAPI
 png_set_filler(png_structp png_ptr, png_uint_32 filler, int filler_loc)
 {
   png_debug(1, "in png_set_filler");
+
   if (png_ptr == NULL)
      return;
   png_ptr->transformations |= PNG_FILLER;
-   png_ptr->filler = (png_byte)filler;
+   png_ptr->filler = (png_uint_16)filler;
   if (filler_loc == PNG_FILLER_AFTER)
      png_ptr->flags |= PNG_FLAG_FILLER_AFTER;
   else
@@ -140,6 +147,7 @@ void PNGAPI
 png_set_add_alpha(png_structp png_ptr, png_uint_32 filler, int filler_loc)
 {
   png_debug(1, "in png_set_add_alpha");
+
   if (png_ptr == NULL)
      return;
   png_set_filler(png_ptr, filler, filler_loc);
@@ -154,6 +162,7 @@ void PNGAPI
 png_set_swap_alpha(png_structp png_ptr)
 {
   png_debug(1, "in png_set_swap_alpha");
+
   if (png_ptr == NULL)
      return;
   png_ptr->transformations |= PNG_SWAP_ALPHA;
@@ -166,6 +175,7 @@ void PNGAPI
 png_set_invert_alpha(png_structp png_ptr)
 {
   png_debug(1, "in png_set_invert_alpha");
+
   if (png_ptr == NULL)
      return;
   png_ptr->transformations |= PNG_INVERT_ALPHA;
@@ -177,6 +187,7 @@ void PNGAPI
 png_set_invert_mono(png_structp png_ptr)
 {
   png_debug(1, "in png_set_invert_mono");
+
   if (png_ptr == NULL)
      return;
   png_ptr->transformations |= PNG_INVERT_MONO;
@@ -187,6 +198,7 @@ void /* PRIVATE */
 png_do_invert(png_row_infop row_info, png_bytep row)
 {
   png_debug(1, "in png_do_invert");
+
  /* This test removed from libpng version 1.0.13 and 1.2.0:
   *   if (row_info->bit_depth == 1 &&
   */
@@ -238,6 +250,7 @@ void /* PRIVATE */
 png_do_swap(png_row_infop row_info, png_bytep row)
 {
   png_debug(1, "in png_do_swap");
+
   if (
       row_info->bit_depth == 16)
   {
@@ -366,6 +379,7 @@ void /* PRIVATE */
 png_do_packswap(png_row_infop row_info, png_bytep row)
 {
   png_debug(1, "in png_do_packswap");
+
   if (
       row_info->bit_depth < 8)
   {
@@ -395,6 +409,7 @@ void /* PRIVATE */
 png_do_strip_filler(png_row_infop row_info, png_bytep row, png_uint_32 flags)
 {
   png_debug(1, "in png_do_strip_filler");
+
   {
      png_bytep sp=row;
      png_bytep dp=row;
@@ -550,6 +565,7 @@ void /* PRIVATE */
 png_do_bgr(png_row_infop row_info, png_bytep row)
 {
   png_debug(1, "in png_do_bgr");
+
   if (
       (row_info->color_type & PNG_COLOR_MASK_COLOR))
   {
@@ -625,9 +641,10 @@ png_set_user_transform_info(png_structp png_ptr, png_voidp
   user_transform_ptr, int user_transform_depth, int user_transform_channels)
 {
   png_debug(1, "in png_set_user_transform_info");
+
   if (png_ptr == NULL)
      return;
-#if defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
+#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
   png_ptr->user_transform_ptr = user_transform_ptr;
   png_ptr->user_transform_depth = (png_byte)user_transform_depth;
   png_ptr->user_transform_channels = (png_byte)user_transform_channels;
@@ -649,7 +666,7 @@ png_get_user_transform_ptr(png_structp png_ptr)
 {
   if (png_ptr == NULL)
      return (NULL);
-#if defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
+#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
   return ((png_voidp)png_ptr->user_transform_ptr);
 #else
   return (NULL);
--- a/pngvcrd.c
+++ b/pngvcrd.c
--- a/pngwio.c
+++ b/pngwio.c
@@ -1,7 +1,7 @@

 /* pngwio.c - functions for data output
 *
- * Last changed in libpng 1.4.0 [June 27, 2009]
+ * Last changed in libpng 1.4.0 [November 22, 2009]
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -38,7 +38,7 @@ png_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
      png_error(png_ptr, "Call to NULL write function");
 }

-#if !defined(PNG_NO_STDIO)
+#ifdef PNG_STDIO_SUPPORTED
 /* This is the function that does the actual writing of data.  If you are
 * not writing to a standard C stream, you should create a replacement
 * write_data function and use it at run time with png_set_write_fn(), rather
@@ -114,7 +114,7 @@ png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
 * to disk).  After png_flush is called, there should be no data pending
 * writing in any buffers.
 */
-#if defined(PNG_WRITE_FLUSH_SUPPORTED)
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
 void /* PRIVATE */
 png_flush(png_structp png_ptr)
 {
@@ -122,7 +122,7 @@ png_flush(png_structp png_ptr)
      (*(png_ptr->output_flush_fn))(png_ptr);
 }

-#if !defined(PNG_NO_STDIO)
+#ifdef PNG_STDIO_SUPPORTED
 void PNGAPI
 png_default_flush(png_structp png_ptr)
 {
@@ -173,7 +173,7 @@ png_set_write_fn(png_structp png_ptr, png_voidp io_ptr,

   png_ptr->io_ptr = io_ptr;

-#if !defined(PNG_NO_STDIO)
+#ifdef PNG_STDIO_SUPPORTED
   if (write_data_fn != NULL)
      png_ptr->write_data_fn = write_data_fn;

@@ -183,8 +183,8 @@ png_set_write_fn(png_structp png_ptr, png_voidp io_ptr,
   png_ptr->write_data_fn = write_data_fn;
 #endif

-#if defined(PNG_WRITE_FLUSH_SUPPORTED)
-#if !defined(PNG_NO_STDIO)
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
+#ifdef PNG_STDIO_SUPPORTED
   if (output_flush_fn != NULL)
      png_ptr->output_flush_fn = output_flush_fn;

@@ -206,8 +206,8 @@ png_set_write_fn(png_structp png_ptr, png_voidp io_ptr,
   }
 }

-#if defined(USE_FAR_KEYWORD)
-#if defined(_MSC_VER)
+#ifdef USE_FAR_KEYWORD
+#ifdef _MSC_VER
 void *png_far_to_near(png_structp png_ptr, png_voidp ptr, int check)
 {
   void *near_ptr;
--- a/pngwrite.c
+++ b/pngwrite.c
@@ -1,7 +1,7 @@

 /* pngwrite.c - general routines to write a PNG file
 *
- * Last changed in libpng 1.4.0 [June 27, 2009]
+ * Last changed in libpng 1.4.0 [November 22, 2009]
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -11,7 +11,7 @@
 * and license in png.h
 */

-/* get internal access to png.h */
+/* Get internal access to png.h */
 #include "png.h"
 #ifdef PNG_WRITE_SUPPORTED
 #include "pngpriv.h"
@@ -29,23 +29,25 @@ void PNGAPI
 png_write_info_before_PLTE(png_structp png_ptr, png_infop info_ptr)
 {
   png_debug(1, "in png_write_info_before_PLTE");
+
   if (png_ptr == NULL || info_ptr == NULL)
      return;
   if (!(png_ptr->mode & PNG_WROTE_INFO_BEFORE_PLTE))
   {
-   png_write_sig(png_ptr); /* write PNG signature */
-#if defined(PNG_MNG_FEATURES_SUPPORTED)
+   /* Write PNG signature */
+   png_write_sig(png_ptr);
+#ifdef PNG_MNG_FEATURES_SUPPORTED
   if ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE)&&(png_ptr->mng_features_permitted))
   {
      png_warning(png_ptr, "MNG features are not allowed in a PNG datastream");
-      png_ptr->mng_features_permitted=0;
+      png_ptr->mng_features_permitted = 0;
   }
 #endif
-   /* write IHDR information. */
+   /* Write IHDR information. */
   png_write_IHDR(png_ptr, info_ptr->width, info_ptr->height,
      info_ptr->bit_depth, info_ptr->color_type, info_ptr->compression_type,
      info_ptr->filter_type,
-#if defined(PNG_WRITE_INTERLACING_SUPPORTED)
+#ifdef PNG_WRITE_INTERLACING_SUPPORTED
      info_ptr->interlace_type);
 #else
      0);
@@ -53,7 +55,7 @@ png_write_info_before_PLTE(png_structp png_ptr, png_infop info_ptr)
   /* The rest of these check to see if the valid field has the appropriate
    * flag set, and if it does, writes the chunk.
    */
-#if defined(PNG_WRITE_gAMA_SUPPORTED)
+#ifdef PNG_WRITE_gAMA_SUPPORTED
   if (info_ptr->valid & PNG_INFO_gAMA)
   {
 #  ifdef PNG_FLOATING_POINT_SUPPORTED
@@ -65,20 +67,20 @@ png_write_info_before_PLTE(png_structp png_ptr, png_infop info_ptr)
 #endif
   }
 #endif
-#if defined(PNG_WRITE_sRGB_SUPPORTED)
+#ifdef PNG_WRITE_sRGB_SUPPORTED
   if (info_ptr->valid & PNG_INFO_sRGB)
      png_write_sRGB(png_ptr, (int)info_ptr->srgb_intent);
 #endif
-#if defined(PNG_WRITE_iCCP_SUPPORTED)
+#ifdef PNG_WRITE_iCCP_SUPPORTED
   if (info_ptr->valid & PNG_INFO_iCCP)
      png_write_iCCP(png_ptr, info_ptr->iccp_name, PNG_COMPRESSION_TYPE_BASE,
                     info_ptr->iccp_profile, (int)info_ptr->iccp_proflen);
 #endif
-#if defined(PNG_WRITE_sBIT_SUPPORTED)
+#ifdef PNG_WRITE_sBIT_SUPPORTED
   if (info_ptr->valid & PNG_INFO_sBIT)
      png_write_sBIT(png_ptr, &(info_ptr->sig_bit), info_ptr->color_type);
 #endif
-#if defined(PNG_WRITE_cHRM_SUPPORTED)
+#ifdef PNG_WRITE_cHRM_SUPPORTED
   if (info_ptr->valid & PNG_INFO_cHRM)
   {
 #ifdef PNG_FLOATING_POINT_SUPPORTED
@@ -98,7 +100,7 @@ png_write_info_before_PLTE(png_structp png_ptr, png_infop info_ptr)
 #endif
   }
 #endif
-#if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
+#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
   if (info_ptr->unknown_chunks_num)
   {
      png_unknown_chunk *up;
@@ -109,7 +111,7 @@ png_write_info_before_PLTE(png_structp png_ptr, png_infop info_ptr)
           up < info_ptr->unknown_chunks + info_ptr->unknown_chunks_num;
           up++)
      {
-         int keep=png_handle_as_unknown(png_ptr, up->name);
+         int keep = png_handle_as_unknown(png_ptr, up->name);
         if (keep != PNG_HANDLE_CHUNK_NEVER &&
            up->location && !(up->location & PNG_HAVE_PLTE) &&
            !(up->location & PNG_HAVE_IDAT) &&
@@ -147,47 +149,47 @@ png_write_info(png_structp png_ptr, png_infop info_ptr)
   else if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
      png_error(png_ptr, "Valid palette required for paletted images");

-#if defined(PNG_WRITE_tRNS_SUPPORTED)
+#ifdef PNG_WRITE_tRNS_SUPPORTED
   if (info_ptr->valid & PNG_INFO_tRNS)
   {
-#if defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED)
-      /* invert the alpha channel (in tRNS) */
+#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
+      /* Invert the alpha channel (in tRNS) */
      if ((png_ptr->transformations & PNG_INVERT_ALPHA) &&
         info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
      {
         int j;
-         for (j=0; j<(int)info_ptr->num_trans; j++)
-            info_ptr->trans[j] = (png_byte)(255 - info_ptr->trans[j]);
+         for (j = 0; j<(int)info_ptr->num_trans; j++)
+            info_ptr->trans_alpha[j] = (png_byte)(255 - info_ptr->trans_alpha[j]);
      }
 #endif
-      png_write_tRNS(png_ptr, info_ptr->trans, &(info_ptr->trans_color),
+      png_write_tRNS(png_ptr, info_ptr->trans_alpha, &(info_ptr->trans_color),
         info_ptr->num_trans, info_ptr->color_type);
   }
 #endif
-#if defined(PNG_WRITE_bKGD_SUPPORTED)
+#ifdef PNG_WRITE_bKGD_SUPPORTED
   if (info_ptr->valid & PNG_INFO_bKGD)
      png_write_bKGD(png_ptr, &(info_ptr->background), info_ptr->color_type);
 #endif
-#if defined(PNG_WRITE_hIST_SUPPORTED)
+#ifdef PNG_WRITE_hIST_SUPPORTED
   if (info_ptr->valid & PNG_INFO_hIST)
      png_write_hIST(png_ptr, info_ptr->hist, info_ptr->num_palette);
 #endif
-#if defined(PNG_WRITE_oFFs_SUPPORTED)
+#ifdef PNG_WRITE_oFFs_SUPPORTED
   if (info_ptr->valid & PNG_INFO_oFFs)
      png_write_oFFs(png_ptr, info_ptr->x_offset, info_ptr->y_offset,
         info_ptr->offset_unit_type);
 #endif
-#if defined(PNG_WRITE_pCAL_SUPPORTED)
+#ifdef PNG_WRITE_pCAL_SUPPORTED
   if (info_ptr->valid & PNG_INFO_pCAL)
      png_write_pCAL(png_ptr, info_ptr->pcal_purpose, info_ptr->pcal_X0,
         info_ptr->pcal_X1, info_ptr->pcal_type, info_ptr->pcal_nparams,
         info_ptr->pcal_units, info_ptr->pcal_params);
 #endif

-#if defined(PNG_sCAL_SUPPORTED)
+#ifdef PNG_sCAL_SUPPORTED
   if (info_ptr->valid & PNG_INFO_sCAL)
-#if defined(PNG_WRITE_sCAL_SUPPORTED)
-#if defined(PNG_FLOATING_POINT_SUPPORTED) && !defined(PNG_NO_STDIO)
+#ifdef PNG_WRITE_sCAL_SUPPORTED
+#if defined(PNG_FLOATING_POINT_SUPPORTED) && defined(PNG_STDIO_SUPPORTED)
      png_write_sCAL(png_ptr, (int)info_ptr->scal_unit,
          info_ptr->scal_pixel_width, info_ptr->scal_pixel_height);
 #else /* !FLOATING_POINT */
@@ -202,13 +204,13 @@ png_write_info(png_structp png_ptr, png_infop info_ptr)
 #endif /* WRITE_sCAL */
 #endif /* sCAL */

-#if defined(PNG_WRITE_pHYs_SUPPORTED)
+#ifdef PNG_WRITE_pHYs_SUPPORTED
   if (info_ptr->valid & PNG_INFO_pHYs)
      png_write_pHYs(png_ptr, info_ptr->x_pixels_per_unit,
         info_ptr->y_pixels_per_unit, info_ptr->phys_unit_type);
 #endif /* pHYs */

-#if defined(PNG_WRITE_tIME_SUPPORTED)
+#ifdef PNG_WRITE_tIME_SUPPORTED
   if (info_ptr->valid & PNG_INFO_tIME)
   {
      png_write_tIME(png_ptr, &(info_ptr->mod_time));
@@ -216,23 +218,23 @@ png_write_info(png_structp png_ptr, png_infop info_ptr)
   }
 #endif /* tIME */

-#if defined(PNG_WRITE_sPLT_SUPPORTED)
+#ifdef PNG_WRITE_sPLT_SUPPORTED
   if (info_ptr->valid & PNG_INFO_sPLT)
     for (i = 0; i < (int)info_ptr->splt_palettes_num; i++)
       png_write_sPLT(png_ptr, info_ptr->splt_palettes + i);
 #endif /* sPLT */

-#if defined(PNG_WRITE_TEXT_SUPPORTED)
+#ifdef PNG_WRITE_TEXT_SUPPORTED
   /* Check to see if we need to write text chunks */
   for (i = 0; i < info_ptr->num_text; i++)
   {
      png_debug2(2, "Writing header text chunk %d, type %d", i,
         info_ptr->text[i].compression);
-      /* an internationalized chunk? */
+      /* An internationalized chunk? */
      if (info_ptr->text[i].compression > 0)
      {
-#if defined(PNG_WRITE_iTXt_SUPPORTED)
-          /* write international chunk */
+#ifdef PNG_WRITE_iTXt_SUPPORTED
+          /* Write international chunk */
          png_write_iTXt(png_ptr,
                         info_ptr->text[i].compression,
                         info_ptr->text[i].key,
@@ -248,8 +250,8 @@ png_write_info(png_structp png_ptr, png_infop info_ptr)
      /* If we want a compressed text chunk */
      else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_zTXt)
      {
-#if defined(PNG_WRITE_zTXt_SUPPORTED)
-         /* write compressed chunk */
+#ifdef PNG_WRITE_zTXt_SUPPORTED
+         /* Write compressed chunk */
         png_write_zTXt(png_ptr, info_ptr->text[i].key,
            info_ptr->text[i].text, 0,
            info_ptr->text[i].compression);
@@ -261,8 +263,8 @@ png_write_info(png_structp png_ptr, png_infop info_ptr)
      }
      else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_NONE)
      {
-#if defined(PNG_WRITE_tEXt_SUPPORTED)
-         /* write uncompressed chunk */
+#ifdef PNG_WRITE_tEXt_SUPPORTED
+         /* Write uncompressed chunk */
         png_write_tEXt(png_ptr, info_ptr->text[i].key,
                         info_ptr->text[i].text,
                         0);
@@ -276,7 +278,7 @@ png_write_info(png_structp png_ptr, png_infop info_ptr)
   }
 #endif /* tEXt */

-#if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
+#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
   if (info_ptr->unknown_chunks_num)
   {
      png_unknown_chunk *up;
@@ -287,7 +289,7 @@ png_write_info(png_structp png_ptr, png_infop info_ptr)
           up < info_ptr->unknown_chunks + info_ptr->unknown_chunks_num;
           up++)
      {
-         int keep=png_handle_as_unknown(png_ptr, up->name);
+         int keep = png_handle_as_unknown(png_ptr, up->name);
         if (keep != PNG_HANDLE_CHUNK_NEVER &&
            up->location && (up->location & PNG_HAVE_PLTE) &&
            !(up->location & PNG_HAVE_IDAT) &&
@@ -310,34 +312,35 @@ void PNGAPI
 png_write_end(png_structp png_ptr, png_infop info_ptr)
 {
   png_debug(1, "in png_write_end");
+
   if (png_ptr == NULL)
      return;
   if (!(png_ptr->mode & PNG_HAVE_IDAT))
      png_error(png_ptr, "No IDATs written into file");

-   /* see if user wants us to write information chunks */
+   /* See if user wants us to write information chunks */
   if (info_ptr != NULL)
   {
-#if defined(PNG_WRITE_TEXT_SUPPORTED)
+#ifdef PNG_WRITE_TEXT_SUPPORTED
      int i; /* local index variable */
 #endif
-#if defined(PNG_WRITE_tIME_SUPPORTED)
-      /* check to see if user has supplied a time chunk */
+#ifdef PNG_WRITE_tIME_SUPPORTED
+      /* Check to see if user has supplied a time chunk */
      if ((info_ptr->valid & PNG_INFO_tIME) &&
         !(png_ptr->mode & PNG_WROTE_tIME))
         png_write_tIME(png_ptr, &(info_ptr->mod_time));
 #endif
-#if defined(PNG_WRITE_TEXT_SUPPORTED)
-      /* loop through comment chunks */
+#ifdef PNG_WRITE_TEXT_SUPPORTED
+      /* Loop through comment chunks */
      for (i = 0; i < info_ptr->num_text; i++)
      {
         png_debug2(2, "Writing trailer text chunk %d, type %d", i,
            info_ptr->text[i].compression);
-         /* an internationalized chunk? */
+         /* An internationalized chunk? */
         if (info_ptr->text[i].compression > 0)
         {
-#if defined(PNG_WRITE_iTXt_SUPPORTED)
-            /* write international chunk */
+#ifdef PNG_WRITE_iTXt_SUPPORTED
+            /* Write international chunk */
            png_write_iTXt(png_ptr,
                        info_ptr->text[i].compression,
                        info_ptr->text[i].key,
@@ -352,8 +355,8 @@ png_write_end(png_structp png_ptr, png_infop info_ptr)
         }
         else if (info_ptr->text[i].compression >= PNG_TEXT_COMPRESSION_zTXt)
         {
-#if defined(PNG_WRITE_zTXt_SUPPORTED)
-            /* write compressed chunk */
+#ifdef PNG_WRITE_zTXt_SUPPORTED
+            /* Write compressed chunk */
            png_write_zTXt(png_ptr, info_ptr->text[i].key,
               info_ptr->text[i].text, 0,
               info_ptr->text[i].compression);
@@ -365,8 +368,8 @@ png_write_end(png_structp png_ptr, png_infop info_ptr)
         }
         else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_NONE)
         {
-#if defined(PNG_WRITE_tEXt_SUPPORTED)
-            /* write uncompressed chunk */
+#ifdef PNG_WRITE_tEXt_SUPPORTED
+            /* Write uncompressed chunk */
            png_write_tEXt(png_ptr, info_ptr->text[i].key,
               info_ptr->text[i].text, 0);
 #else
@@ -378,7 +381,7 @@ png_write_end(png_structp png_ptr, png_infop info_ptr)
         }
      }
 #endif
-#if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
+#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
   if (info_ptr->unknown_chunks_num)
   {
      png_unknown_chunk *up;
@@ -389,7 +392,7 @@ png_write_end(png_structp png_ptr, png_infop info_ptr)
           up < info_ptr->unknown_chunks + info_ptr->unknown_chunks_num;
           up++)
      {
-         int keep=png_handle_as_unknown(png_ptr, up->name);
+         int keep = png_handle_as_unknown(png_ptr, up->name);
         if (keep != PNG_HANDLE_CHUNK_NEVER &&
            up->location && (up->location & PNG_AFTER_IDAT) &&
            ((up->name[3] & 0x20) || keep == PNG_HANDLE_CHUNK_ALWAYS ||
@@ -404,25 +407,29 @@ png_write_end(png_structp png_ptr, png_infop info_ptr)

   png_ptr->mode |= PNG_AFTER_IDAT;

-   /* write end of PNG file */
+   /* Write end of PNG file */
   png_write_IEND(png_ptr);
   /* This flush, added in libpng-1.0.8, removed from libpng-1.0.9beta03,
    * and restored again in libpng-1.2.30, may cause some applications that
    * do not set png_ptr->output_flush_fn to crash.  If your application
-    * experiences a problem, please report the event to
+    * experiences a problem, please try building libpng with
+    * PNG_WRITE_FLUSH_AFTER_IEND_SUPPORTED defined, and report the event to
    * png-mng-implement at lists.sf.net .
    */
-#if defined(PNG_WRITE_FLUSH_SUPPORTED)
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
+#  ifdef PNG_WRITE_FLUSH_AFTER_IEND_SUPPORTED
   png_flush(png_ptr);
+#  endif
 #endif
 }

-#if defined(PNG_WRITE_tIME_SUPPORTED)
-/* "time.h" functions are not supported on WindowsCE */
+#ifdef PNG_CONVERT_tIME_SUPPORTED
+/* "tm" structure is not supported on WindowsCE */
 void PNGAPI
 png_convert_from_struct_tm(png_timep ptime, struct tm FAR * ttime)
 {
   png_debug(1, "in png_convert_from_struct_tm");
+
   ptime->year = (png_uint_16)(1900 + ttime->tm_year);
   ptime->month = (png_byte)(ttime->tm_mon + 1);
   ptime->day = (png_byte)ttime->tm_mday;
@@ -437,12 +444,12 @@ png_convert_from_time_t(png_timep ptime, time_t ttime)
   struct tm *tbuf;

   png_debug(1, "in png_convert_from_time_t");
+
   tbuf = gmtime(&ttime);
   png_convert_from_struct_tm(ptime, tbuf);
 }
 #endif

-
 /* Initialize png_ptr structure, and allocate any memory needed */
 png_structp PNGAPI
 png_create_write_struct(png_const_charp user_png_ver, png_voidp error_ptr,
@@ -471,7 +478,9 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
 #endif
 #endif
   int i;
+
   png_debug(1, "in png_create_write_struct");
+
 #ifdef PNG_USER_MEM_SUPPORTED
   png_ptr = (png_structp)png_create_struct_2(PNG_STRUCT_PNG,
      (png_malloc_ptr)malloc_fn, (png_voidp)mem_ptr);
@@ -481,10 +490,10 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
   if (png_ptr == NULL)
      return (NULL);

-   /* added at libpng-1.2.6 */
+   /* Added at libpng-1.2.6 */
 #ifdef PNG_SET_USER_LIMITS_SUPPORTED
-   png_ptr->user_width_max=PNG_USER_WIDTH_MAX;
-   png_ptr->user_height_max=PNG_USER_HEIGHT_MAX;
+   png_ptr->user_width_max = PNG_USER_WIDTH_MAX;
+   png_ptr->user_height_max = PNG_USER_HEIGHT_MAX;
 #endif

 #ifdef PNG_SETJMP_SUPPORTED
@@ -494,7 +503,10 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
 #ifdef USE_FAR_KEYWORD
   if (setjmp(jmpbuf))
 #else
-   if (setjmp(png_ptr->jmpbuf))
+   if (setjmp(png_jmpbuf(png_ptr))) /* sets longjmp to match setjmp */
+#endif
+#ifdef USE_FAR_KEYWORD
+   png_memcpy(png_jmpbuf(png_ptr), jmpbuf, png_sizeof(jmp_buf));
 #endif
      PNG_ABORT();
 #endif
@@ -506,7 +518,7 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,

   if (user_png_ver)
   {
-      i=0;
+      i = 0;
      do
      {
         if (user_png_ver[i] != png_libpng_ver[i])
@@ -525,7 +537,7 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
         (user_png_ver[0] == '1' && user_png_ver[2] != png_libpng_ver[2]) ||
         (user_png_ver[0] == '0' && user_png_ver[2] < '9'))
     {
-#if !defined(PNG_NO_STDIO) && !defined(_WIN32_WCE)
+#ifdef PNG_STDIO_SUPPORTED
        char msg[80];
        if (user_png_ver)
        {
@@ -540,7 +552,7 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
        png_warning(png_ptr, msg);
 #endif
 #ifdef PNG_ERROR_NUMBERS_SUPPORTED
-        png_ptr->flags=0;
+        png_ptr->flags = 0;
 #endif
        png_warning(png_ptr,
           "Incompatible libpng version in application and library");
@@ -548,7 +560,7 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
     }
   }

-   /* initialize zbuf - compression buffer */
+   /* Initialize zbuf - compression buffer */
   png_ptr->zbuf_size = PNG_ZBUF_SIZE;
   if (!png_cleanup_needed)
   {
@@ -573,7 +585,7 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,

   png_set_write_fn(png_ptr, NULL, NULL, NULL);

-#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
   png_set_filter_heuristics(png_ptr, PNG_FILTER_HEURISTIC_DEFAULT,
      1, NULL, NULL);
 #endif
@@ -599,7 +611,7 @@ png_write_rows(png_structp png_ptr, png_bytepp row,
   if (png_ptr == NULL)
      return;

-   /* loop through the rows */
+   /* Loop through the rows */
   for (i = 0, rp = row; i < num_rows; i++, rp++)
   {
      png_write_row(png_ptr, *rp);
@@ -620,7 +632,8 @@ png_write_image(png_structp png_ptr, png_bytepp image)
      return;

   png_debug(1, "in png_write_image");
-#if defined(PNG_WRITE_INTERLACING_SUPPORTED)
+
+#ifdef PNG_WRITE_INTERLACING_SUPPORTED
   /* Initialize interlace handling.  If image is not interlaced,
    * this will set pass to 1
    */
@@ -628,10 +641,10 @@ png_write_image(png_structp png_ptr, png_bytepp image)
 #else
   num_pass = 1;
 #endif
-   /* loop through passes */
+   /* Loop through passes */
   for (pass = 0; pass < num_pass; pass++)
   {
-      /* loop through image */
+      /* Loop through image */
      for (i = 0, rp = image; i < png_ptr->height; i++, rp++)
      {
         png_write_row(png_ptr, *rp);
@@ -639,24 +652,25 @@ png_write_image(png_structp png_ptr, png_bytepp image)
   }
 }

-/* called by user to write a row of image data */
+/* Called by user to write a row of image data */
 void PNGAPI
 png_write_row(png_structp png_ptr, png_bytep row)
 {
   if (png_ptr == NULL)
      return;
+
   png_debug2(1, "in png_write_row (row %ld, pass %d)",
      png_ptr->row_number, png_ptr->pass);

-   /* initialize transformations and other stuff if first time */
+   /* Initialize transformations and other stuff if first time */
   if (png_ptr->row_number == 0 && png_ptr->pass == 0)
   {
-      /* make sure we wrote the header info */
+      /* Make sure we wrote the header info */
      if (!(png_ptr->mode & PNG_WROTE_INFO_BEFORE_PLTE))
         png_error(png_ptr,
            "png_write_info was never called before png_write_row");

-      /* check for transforms that have been set but were defined out */
+      /* Check for transforms that have been set but were defined out */
 #if !defined(PNG_WRITE_INVERT_SUPPORTED) && defined(PNG_READ_INVERT_SUPPORTED)
      if (png_ptr->transformations & PNG_INVERT_MONO)
         png_warning(png_ptr, "PNG_WRITE_INVERT_SUPPORTED is not defined");
@@ -689,8 +703,8 @@ png_write_row(png_structp png_ptr, png_bytep row)
      png_write_start_row(png_ptr);
   }

-#if defined(PNG_WRITE_INTERLACING_SUPPORTED)
-   /* if interlaced and not interested in row, return */
+#ifdef PNG_WRITE_INTERLACING_SUPPORTED
+   /* If interlaced and not interested in row, return */
   if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE))
   {
      switch (png_ptr->pass)
@@ -748,7 +762,7 @@ png_write_row(png_structp png_ptr, png_bytep row)
   }
 #endif

-   /* set up row info for transformations */
+   /* Set up row info for transformations */
   png_ptr->row_info.color_type = png_ptr->color_type;
   png_ptr->row_info.width = png_ptr->usr_width;
   png_ptr->row_info.channels = png_ptr->usr_channels;
@@ -769,7 +783,7 @@ png_write_row(png_structp png_ptr, png_bytep row)
   /* Copy user's row into buffer, leaving room for filter byte. */
   png_memcpy(png_ptr->row_buf + 1, row, png_ptr->row_info.rowbytes);

-#if defined(PNG_WRITE_INTERLACING_SUPPORTED)
+#ifdef PNG_WRITE_INTERLACING_SUPPORTED
   /* Handle interlacing */
   if (png_ptr->interlaced && png_ptr->pass < 6 &&
      (png_ptr->transformations & PNG_INTERLACE))
@@ -789,7 +803,7 @@ png_write_row(png_structp png_ptr, png_bytep row)
   if (png_ptr->transformations)
      png_do_write_transformations(png_ptr);

-#if defined(PNG_MNG_FEATURES_SUPPORTED)
+#ifdef PNG_MNG_FEATURES_SUPPORTED
   /* Write filter_method 64 (intrapixel differencing) only if
    * 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and
    * 2. Libpng did not write a PNG signature (this filter_method is only
@@ -814,24 +828,26 @@ png_write_row(png_structp png_ptr, png_bytep row)
      (*(png_ptr->write_row_fn))(png_ptr, png_ptr->row_number, png_ptr->pass);
 }

-#if defined(PNG_WRITE_FLUSH_SUPPORTED)
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
 /* Set the automatic flush interval or 0 to turn flushing off */
 void PNGAPI
 png_set_flush(png_structp png_ptr, int nrows)
 {
   png_debug(1, "in png_set_flush");
+
   if (png_ptr == NULL)
      return;
   png_ptr->flush_dist = (nrows < 0 ? 0 : nrows);
 }

-/* flush the current output buffers now */
+/* Flush the current output buffers now */
 void PNGAPI
 png_write_flush(png_structp png_ptr)
 {
   int wrote_IDAT;

   png_debug(1, "in png_write_flush");
+
   if (png_ptr == NULL)
      return;
   /* We have already written out all of the data */
@@ -842,11 +858,11 @@ png_write_flush(png_structp png_ptr)
   {
      int ret;

-      /* compress the data */
+      /* Compress the data */
      ret = deflate(&png_ptr->zstream, Z_SYNC_FLUSH);
      wrote_IDAT = 0;

-      /* check for compression errors */
+      /* Check for compression errors */
      if (ret != Z_OK)
      {
         if (png_ptr->zstream.msg != NULL)
@@ -857,7 +873,7 @@ png_write_flush(png_structp png_ptr)

      if (!(png_ptr->zstream.avail_out))
      {
-         /* write the IDAT and reset the zlib output buffer */
+         /* Write the IDAT and reset the zlib output buffer */
         png_write_IDAT(png_ptr, png_ptr->zbuf,
                        png_ptr->zbuf_size);
         png_ptr->zstream.next_out = png_ptr->zbuf;
@@ -869,7 +885,7 @@ png_write_flush(png_structp png_ptr)
   /* If there is any data left to be output, write it into a new IDAT */
   if (png_ptr->zbuf_size != png_ptr->zstream.avail_out)
   {
-      /* write the IDAT and reset the zlib output buffer */
+      /* Write the IDAT and reset the zlib output buffer */
      png_write_IDAT(png_ptr, png_ptr->zbuf,
                     png_ptr->zbuf_size - png_ptr->zstream.avail_out);
      png_ptr->zstream.next_out = png_ptr->zbuf;
@@ -892,6 +908,7 @@ png_destroy_write_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr)
 #endif

   png_debug(1, "in png_destroy_write_struct");
+
   if (png_ptr_ptr != NULL)
   {
      png_ptr = *png_ptr_ptr;
@@ -918,7 +935,7 @@ png_destroy_write_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr)
      {
        png_free_data(png_ptr, info_ptr, PNG_FREE_ALL, -1);

-#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
        if (png_ptr->num_chunk_list)
        {
           png_free(png_ptr, png_ptr->chunk_list);
@@ -955,7 +972,7 @@ void /* PRIVATE */
 png_write_destroy(png_structp png_ptr)
 {
 #ifdef PNG_SETJMP_SUPPORTED
-   jmp_buf tmp_jmp; /* save jump buffer */
+   jmp_buf tmp_jmp; /* Save jump buffer */
 #endif
   png_error_ptr error_fn;
   png_error_ptr warning_fn;
@@ -965,13 +982,14 @@ png_write_destroy(png_structp png_ptr)
 #endif

   png_debug(1, "in png_write_destroy");
-   /* free any memory zlib uses */
+
+   /* Free any memory zlib uses */
   deflateEnd(&png_ptr->zstream);

-   /* free our memory.  png_free checks NULL for us. */
+   /* Free our memory.  png_free checks NULL for us. */
   png_free(png_ptr, png_ptr->zbuf);
   png_free(png_ptr, png_ptr->row_buf);
-#ifndef PNG_NO_WRITE_FILTER
+#ifdef PNG_WRITE_FILTER_SUPPORTED
   png_free(png_ptr, png_ptr->prev_row);
   png_free(png_ptr, png_ptr->sub_row);
   png_free(png_ptr, png_ptr->up_row);
@@ -979,11 +997,11 @@ png_write_destroy(png_structp png_ptr)
   png_free(png_ptr, png_ptr->paeth_row);
 #endif

-#if defined(PNG_TIME_RFC1123_SUPPORTED)
+#ifdef PNG_TIME_RFC1123_SUPPORTED
   png_free(png_ptr, png_ptr->time_buffer);
 #endif

-#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
   png_free(png_ptr, png_ptr->prev_filters);
   png_free(png_ptr, png_ptr->filter_weights);
   png_free(png_ptr, png_ptr->inv_filter_weights);
@@ -1022,9 +1040,10 @@ void PNGAPI
 png_set_filter(png_structp png_ptr, int method, int filters)
 {
   png_debug(1, "in png_set_filter");
+
   if (png_ptr == NULL)
      return;
-#if defined(PNG_MNG_FEATURES_SUPPORTED)
+#ifdef PNG_MNG_FEATURES_SUPPORTED
   if ((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
      (method == PNG_INTRAPIXEL_DIFFERENCING))
         method = PNG_FILTER_TYPE_BASE;
@@ -1033,26 +1052,26 @@ png_set_filter(png_structp png_ptr, int method, int filters)
   {
      switch (filters & (PNG_ALL_FILTERS | 0x07))
      {
-#ifndef PNG_NO_WRITE_FILTER
+#ifdef PNG_WRITE_FILTER_SUPPORTED
         case 5:
         case 6:
         case 7: png_warning(png_ptr, "Unknown row filter for method 0");
-#endif /* PNG_NO_WRITE_FILTER */
+#endif /* PNG_WRITE_FILTER_SUPPORTED */
         case PNG_FILTER_VALUE_NONE:
-              png_ptr->do_filter=PNG_FILTER_NONE; break;
-#ifndef PNG_NO_WRITE_FILTER
+              png_ptr->do_filter = PNG_FILTER_NONE; break;
+#ifdef PNG_WRITE_FILTER_SUPPORTED
         case PNG_FILTER_VALUE_SUB:
-              png_ptr->do_filter=PNG_FILTER_SUB; break;
+              png_ptr->do_filter = PNG_FILTER_SUB; break;
         case PNG_FILTER_VALUE_UP:
-              png_ptr->do_filter=PNG_FILTER_UP; break;
+              png_ptr->do_filter = PNG_FILTER_UP; break;
         case PNG_FILTER_VALUE_AVG:
-              png_ptr->do_filter=PNG_FILTER_AVG; break;
+              png_ptr->do_filter = PNG_FILTER_AVG; break;
         case PNG_FILTER_VALUE_PAETH:
-              png_ptr->do_filter=PNG_FILTER_PAETH; break;
+              png_ptr->do_filter = PNG_FILTER_PAETH; break;
         default: png_ptr->do_filter = (png_byte)filters; break;
 #else
         default: png_warning(png_ptr, "Unknown row filter for method 0");
-#endif /* PNG_NO_WRITE_FILTER */
+#endif /* PNG_WRITE_FILTER_SUPPORTED */
      }

      /* If we have allocated the row_buf, this means we have already started
@@ -1066,7 +1085,7 @@ png_set_filter(png_structp png_ptr, int method, int filters)
       */
      if (png_ptr->row_buf != NULL)
      {
-#ifndef PNG_NO_WRITE_FILTER
+#ifdef PNG_WRITE_FILTER_SUPPORTED
         if ((png_ptr->do_filter & PNG_FILTER_SUB) && png_ptr->sub_row == NULL)
         {
            png_ptr->sub_row = (png_bytep)png_malloc(png_ptr,
@@ -1121,7 +1140,7 @@ png_set_filter(png_structp png_ptr, int method, int filters)
         }

         if (png_ptr->do_filter == PNG_NO_FILTERS)
-#endif /* PNG_NO_WRITE_FILTER */
+#endif /* PNG_WRITE_FILTER_SUPPORTED */
            png_ptr->do_filter = PNG_FILTER_NONE;
      }
   }
@@ -1136,7 +1155,7 @@ png_set_filter(png_structp png_ptr, int method, int filters)
 * filtered data going to zlib more consistent, hopefully resulting in
 * better compression.
 */
-#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)      /* GRR 970116 */
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED      /* GRR 970116 */
 void PNGAPI
 png_set_filter_heuristics(png_structp png_ptr, int heuristic_method,
   int num_weights, png_doublep filter_weights,
@@ -1145,6 +1164,7 @@ png_set_filter_heuristics(png_structp png_ptr, int heuristic_method,
   int i;

   png_debug(1, "in png_set_filter_heuristics");
+
   if (png_ptr == NULL)
      return;
   if (heuristic_method >= PNG_FILTER_HEURISTIC_LAST)
@@ -1259,6 +1279,7 @@ void PNGAPI
 png_set_compression_level(png_structp png_ptr, int level)
 {
   png_debug(1, "in png_set_compression_level");
+
   if (png_ptr == NULL)
      return;
   png_ptr->flags |= PNG_FLAG_ZLIB_CUSTOM_LEVEL;
@@ -1269,6 +1290,7 @@ void PNGAPI
 png_set_compression_mem_level(png_structp png_ptr, int mem_level)
 {
   png_debug(1, "in png_set_compression_mem_level");
+
   if (png_ptr == NULL)
      return;
   png_ptr->flags |= PNG_FLAG_ZLIB_CUSTOM_MEM_LEVEL;
@@ -1279,6 +1301,7 @@ void PNGAPI
 png_set_compression_strategy(png_structp png_ptr, int strategy)
 {
   png_debug(1, "in png_set_compression_strategy");
+
   if (png_ptr == NULL)
      return;
   png_ptr->flags |= PNG_FLAG_ZLIB_CUSTOM_STRATEGY;
@@ -1295,11 +1318,11 @@ png_set_compression_window_bits(png_structp png_ptr, int window_bits)
   else if (window_bits < 8)
      png_warning(png_ptr, "Only compression windows >= 256 supported by PNG");
 #ifndef WBITS_8_OK
-   /* avoid libpng bug with 256-byte windows */
+   /* Avoid libpng bug with 256-byte windows */
   if (window_bits == 8)
     {
       png_warning(png_ptr, "Compression window is being reset to 512");
-       window_bits=9;
+       window_bits = 9;
     }
 #endif
   png_ptr->flags |= PNG_FLAG_ZLIB_CUSTOM_WINDOW_BITS;
@@ -1310,6 +1333,7 @@ void PNGAPI
 png_set_compression_method(png_structp png_ptr, int method)
 {
   png_debug(1, "in png_set_compression_method");
+
   if (png_ptr == NULL)
      return;
   if (method != 8)
@@ -1326,12 +1350,13 @@ png_set_write_status_fn(png_structp png_ptr, png_write_status_ptr write_row_fn)
   png_ptr->write_row_fn = write_row_fn;
 }

-#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
+#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
 void PNGAPI
 png_set_write_user_transform_fn(png_structp png_ptr, png_user_transform_ptr
   write_user_transform_fn)
 {
   png_debug(1, "in png_set_write_user_transform_fn");
+
   if (png_ptr == NULL)
      return;
   png_ptr->transformations |= PNG_USER_TRANSFORM;
@@ -1340,31 +1365,26 @@ png_set_write_user_transform_fn(png_structp png_ptr, png_user_transform_ptr
 #endif


-#if defined(PNG_INFO_IMAGE_SUPPORTED)
+#ifdef PNG_INFO_IMAGE_SUPPORTED
 void PNGAPI
 png_write_png(png_structp png_ptr, png_infop info_ptr,
              int transforms, voidp params)
 {
   if (png_ptr == NULL || info_ptr == NULL)
      return;
-#if defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED)
-   /* Invert the alpha channel from opacity to transparency */
-   if (transforms & PNG_TRANSFORM_INVERT_ALPHA)
-      png_set_invert_alpha(png_ptr);
-#endif

   /* Write the file header information. */
   png_write_info(png_ptr, info_ptr);

   /* ------ these transformations don't touch the info structure ------- */

-#if defined(PNG_WRITE_INVERT_SUPPORTED)
+#ifdef PNG_WRITE_INVERT_SUPPORTED
   /* Invert monochrome pixels */
   if (transforms & PNG_TRANSFORM_INVERT_MONO)
      png_set_invert_mono(png_ptr);
 #endif

-#if defined(PNG_WRITE_SHIFT_SUPPORTED)
+#ifdef PNG_WRITE_SHIFT_SUPPORTED
   /* Shift the pixels up to a legal bit depth and fill in
    * as appropriate to correctly scale the image.
    */
@@ -1373,19 +1393,19 @@ png_write_png(png_structp png_ptr, png_infop info_ptr,
      png_set_shift(png_ptr, &info_ptr->sig_bit);
 #endif

-#if defined(PNG_WRITE_PACK_SUPPORTED)
+#ifdef PNG_WRITE_PACK_SUPPORTED
   /* Pack pixels into bytes */
   if (transforms & PNG_TRANSFORM_PACKING)
       png_set_packing(png_ptr);
 #endif

-#if defined(PNG_WRITE_SWAP_ALPHA_SUPPORTED)
+#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED
   /* Swap location of alpha bytes from ARGB to RGBA */
   if (transforms & PNG_TRANSFORM_SWAP_ALPHA)
      png_set_swap_alpha(png_ptr);
 #endif

-#if defined(PNG_WRITE_FILLER_SUPPORTED)
+#ifdef PNG_WRITE_FILLER_SUPPORTED
   /* Pack XRGB/RGBX/ARGB/RGBA into * RGB (4 channels -> 3 channels) */
   if (transforms & PNG_TRANSFORM_STRIP_FILLER_AFTER)
      png_set_filler(png_ptr, 0, PNG_FILLER_AFTER);
@@ -1393,24 +1413,30 @@ png_write_png(png_structp png_ptr, png_infop info_ptr,
      png_set_filler(png_ptr, 0, PNG_FILLER_BEFORE);
 #endif

-#if defined(PNG_WRITE_BGR_SUPPORTED)
+#ifdef PNG_WRITE_BGR_SUPPORTED
   /* Flip BGR pixels to RGB */
   if (transforms & PNG_TRANSFORM_BGR)
      png_set_bgr(png_ptr);
 #endif

-#if defined(PNG_WRITE_SWAP_SUPPORTED)
+#ifdef PNG_WRITE_SWAP_SUPPORTED
   /* Swap bytes of 16-bit files to most significant byte first */
   if (transforms & PNG_TRANSFORM_SWAP_ENDIAN)
      png_set_swap(png_ptr);
 #endif

-#if defined(PNG_WRITE_PACKSWAP_SUPPORTED)
+#ifdef PNG_WRITE_PACKSWAP_SUPPORTED
   /* Swap bits of 1, 2, 4 bit packed pixel formats */
   if (transforms & PNG_TRANSFORM_PACKSWAP)
      png_set_packswap(png_ptr);
 #endif

+#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
+   /* Invert the alpha channel from opacity to transparency */
+   if (transforms & PNG_TRANSFORM_INVERT_ALPHA)
+      png_set_invert_alpha(png_ptr);
+#endif
+
   /* ----------------------- end of transformations ------------------- */

   /* Write the bits */
@@ -1420,7 +1446,7 @@ png_write_png(png_structp png_ptr, png_infop info_ptr,
   /* It is REQUIRED to call this to finish writing the rest of the file */
   png_write_end(png_ptr, info_ptr);

-   transforms = transforms; /* quiet compiler warnings */
+   transforms = transforms; /* Quiet compiler warnings */
   params = params;
 }
 #endif
--- a/pngwtran.c
+++ b/pngwtran.c
@@ -1,7 +1,7 @@

 /* pngwtran.c - transforms the data in a row for PNG writers
 *
- * Last changed in libpng 1.4.0 [June 27, 2009]
+ * Last changed in libpng 1.4.0 [November 22, 2009]
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -26,7 +26,7 @@ png_do_write_transformations(png_structp png_ptr)
   if (png_ptr == NULL)
      return;

-#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
+#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
   if (png_ptr->transformations & PNG_USER_TRANSFORM)
      if (png_ptr->write_user_transform_fn != NULL)
        (*(png_ptr->write_user_transform_fn)) /* User write transform function */
@@ -40,48 +40,48 @@ png_do_write_transformations(png_structp png_ptr)
             /*  png_byte pixel_depth;       bits per pixel (depth*channels) */
           png_ptr->row_buf + 1);      /* start of pixel data for row */
 #endif
-#if defined(PNG_WRITE_FILLER_SUPPORTED)
+#ifdef PNG_WRITE_FILLER_SUPPORTED
   if (png_ptr->transformations & PNG_FILLER)
      png_do_strip_filler(&(png_ptr->row_info), png_ptr->row_buf + 1,
         png_ptr->flags);
 #endif
-#if defined(PNG_WRITE_PACKSWAP_SUPPORTED)
+#ifdef PNG_WRITE_PACKSWAP_SUPPORTED
   if (png_ptr->transformations & PNG_PACKSWAP)
      png_do_packswap(&(png_ptr->row_info), png_ptr->row_buf + 1);
 #endif
-#if defined(PNG_WRITE_PACK_SUPPORTED)
+#ifdef PNG_WRITE_PACK_SUPPORTED
   if (png_ptr->transformations & PNG_PACK)
      png_do_pack(&(png_ptr->row_info), png_ptr->row_buf + 1,
         (png_uint_32)png_ptr->bit_depth);
 #endif
-#if defined(PNG_WRITE_SWAP_SUPPORTED)
+#ifdef PNG_WRITE_SWAP_SUPPORTED
   if (png_ptr->transformations & PNG_SWAP_BYTES)
      png_do_swap(&(png_ptr->row_info), png_ptr->row_buf + 1);
 #endif
-#if defined(PNG_WRITE_SHIFT_SUPPORTED)
+#ifdef PNG_WRITE_SHIFT_SUPPORTED
   if (png_ptr->transformations & PNG_SHIFT)
      png_do_shift(&(png_ptr->row_info), png_ptr->row_buf + 1,
         &(png_ptr->shift));
 #endif
-#if defined(PNG_WRITE_SWAP_ALPHA_SUPPORTED)
+#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED
   if (png_ptr->transformations & PNG_SWAP_ALPHA)
      png_do_write_swap_alpha(&(png_ptr->row_info), png_ptr->row_buf + 1);
 #endif
-#if defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED)
+#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
   if (png_ptr->transformations & PNG_INVERT_ALPHA)
      png_do_write_invert_alpha(&(png_ptr->row_info), png_ptr->row_buf + 1);
 #endif
-#if defined(PNG_WRITE_BGR_SUPPORTED)
+#ifdef PNG_WRITE_BGR_SUPPORTED
   if (png_ptr->transformations & PNG_BGR)
      png_do_bgr(&(png_ptr->row_info), png_ptr->row_buf + 1);
 #endif
-#if defined(PNG_WRITE_INVERT_SUPPORTED)
+#ifdef PNG_WRITE_INVERT_SUPPORTED
   if (png_ptr->transformations & PNG_INVERT_MONO)
      png_do_invert(&(png_ptr->row_info), png_ptr->row_buf + 1);
 #endif
 }

-#if defined(PNG_WRITE_PACK_SUPPORTED)
+#ifdef PNG_WRITE_PACK_SUPPORTED
 /* Pack pixels into bytes.  Pass the true bit depth in bit_depth.  The
 * row_info bit depth should be 8 (one pixel per byte).  The channels
 * should be 1 (this only happens on grayscale and paletted images).
@@ -90,6 +90,7 @@ void /* PRIVATE */
 png_do_pack(png_row_infop row_info, png_bytep row, png_uint_32 bit_depth)
 {
   png_debug(1, "in png_do_pack");
+
   if (row_info->bit_depth == 8 &&
      row_info->channels == 1)
   {
@@ -201,7 +202,7 @@ png_do_pack(png_row_infop row_info, png_bytep row, png_uint_32 bit_depth)
 }
 #endif

-#if defined(PNG_WRITE_SHIFT_SUPPORTED)
+#ifdef PNG_WRITE_SHIFT_SUPPORTED
 /* Shift pixel values to take advantage of whole range.  Pass the
 * true number of bits in bit_depth.  The row should be packed
 * according to row_info->bit_depth.  Thus, if you had a row of
@@ -213,6 +214,7 @@ void /* PRIVATE */
 png_do_shift(png_row_infop row_info, png_bytep row, png_color_8p bit_depth)
 {
   png_debug(1, "in png_do_shift");
+
   if (
      row_info->color_type != PNG_COLOR_TYPE_PALETTE)
   {
@@ -328,11 +330,12 @@ png_do_shift(png_row_infop row_info, png_bytep row, png_color_8p bit_depth)
 }
 #endif

-#if defined(PNG_WRITE_SWAP_ALPHA_SUPPORTED)
+#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED
 void /* PRIVATE */
 png_do_write_swap_alpha(png_row_infop row_info, png_bytep row)
 {
   png_debug(1, "in png_do_write_swap_alpha");
+
   {
      if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
      {
@@ -413,11 +416,12 @@ png_do_write_swap_alpha(png_row_infop row_info, png_bytep row)
 }
 #endif

-#if defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED)
+#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
 void /* PRIVATE */
 png_do_write_invert_alpha(png_row_infop row_info, png_bytep row)
 {
   png_debug(1, "in png_do_write_invert_alpha");
+
   {
      if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
      {
@@ -499,12 +503,13 @@ png_do_write_invert_alpha(png_row_infop row_info, png_bytep row)
 }
 #endif

-#if defined(PNG_MNG_FEATURES_SUPPORTED)
+#ifdef PNG_MNG_FEATURES_SUPPORTED
 /* Undoes intrapixel differencing  */
 void /* PRIVATE */
 png_do_write_intrapixel(png_row_infop row_info, png_bytep row)
 {
   png_debug(1, "in png_do_write_intrapixel");
+
   if (
       (row_info->color_type & PNG_COLOR_MASK_COLOR))
   {
--- a/pngwutil.c
+++ b/pngwutil.c
@@ -1,7 +1,7 @@

 /* pngwutil.c - utilities to write a PNG file
 *
- * Last changed in libpng 1.4.0 [June 27, 2009]
+ * Last changed in libpng 1.4.0 [November 22, 2009]
 * Copyright (c) 1998-2009 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -28,7 +28,7 @@ png_save_uint_32(png_bytep buf, png_uint_32 i)
   buf[3] = (png_byte)(i & 0xff);
 }

-#if defined(PNG_SAVE_INT_32_SUPPORTED)
+#ifdef PNG_SAVE_INT_32_SUPPORTED
 /* The png_save_int_32 function assumes integers are stored in two's
 * complement format.  If this isn't the case, then this routine needs to
 * be modified to write data in two's complement format.
@@ -107,6 +107,12 @@ png_write_chunk_start(png_structp png_ptr, png_bytep chunk_name,
 {
   png_byte buf[8];

+   png_debug2(0, "Writing %s chunk, length = %lu", chunk_name,
+      (unsigned long)length);
+
+   if (png_ptr == NULL)
+      return;
+
 #ifdef PNG_IO_STATE_SUPPORTED
   /* Inform the I/O callback that the chunk header is being written.
    * PNG_IO_CHUNK_HDR requires a single I/O call.
@@ -114,11 +120,6 @@ png_write_chunk_start(png_structp png_ptr, png_bytep chunk_name,
   png_ptr->io_state = PNG_IO_WRITING | PNG_IO_CHUNK_HDR;
 #endif

-   png_debug2(0, "Writing %s chunk, length = %lu", chunk_name,
-      (unsigned long)length);
-   if (png_ptr == NULL)
-      return;
-
   /* Write the length and the chunk name */
   png_save_uint_32(buf, length);
   png_memcpy(buf + 4, chunk_name, 4);
@@ -219,7 +220,7 @@ png_text_compress(png_structp png_ptr,

   if (compression >= PNG_TEXT_COMPRESSION_LAST)
   {
-#if !defined(PNG_NO_STDIO)
+#ifdef PNG_STDIO_SUPPORTED
      char msg[50];
      png_snprintf(msg, 50, "Unknown compression type %d", compression);
      png_warning(png_ptr, msg);
@@ -416,14 +417,13 @@ png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height,
   int bit_depth, int color_type, int compression_type, int filter_type,
   int interlace_type)
 {
-#ifdef PNG_USE_LOCAL_ARRAYS
   PNG_IHDR;
-#endif
   int ret;

   png_byte buf[13]; /* Buffer to store the IHDR info */

   png_debug(1, "in png_write_IHDR");
+
   /* Check that we have valid input data from the application info */
   switch (color_type)
   {
@@ -483,7 +483,7 @@ png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height,
    * 5. The color_type is RGB or RGBA
    */
   if (
-#if defined(PNG_MNG_FEATURES_SUPPORTED)
+#ifdef PNG_MNG_FEATURES_SUPPORTED
      !((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
      ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) == 0) &&
      (color_type == PNG_COLOR_TYPE_RGB ||
@@ -511,7 +511,7 @@ png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height,
   png_ptr->bit_depth = (png_byte)bit_depth;
   png_ptr->color_type = (png_byte)color_type;
   png_ptr->interlaced = (png_byte)interlace_type;
-#if defined(PNG_MNG_FEATURES_SUPPORTED)
+#ifdef PNG_MNG_FEATURES_SUPPORTED
   png_ptr->filter_type = (png_byte)filter_type;
 #endif
   png_ptr->compression_type = (png_byte)compression_type;
@@ -593,16 +593,15 @@ png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height,
 void /* PRIVATE */
 png_write_PLTE(png_structp png_ptr, png_colorp palette, png_uint_32 num_pal)
 {
-#ifdef PNG_USE_LOCAL_ARRAYS
   PNG_PLTE;
-#endif
   png_uint_32 i;
   png_colorp pal_ptr;
   png_byte buf[3];

   png_debug(1, "in png_write_PLTE");
+
   if ((
-#if defined(PNG_MNG_FEATURES_SUPPORTED)
+#ifdef PNG_MNG_FEATURES_SUPPORTED
        !(png_ptr->mng_features_permitted & PNG_FLAG_MNG_EMPTY_PLTE) &&
 #endif
        num_pal == 0) || num_pal > 256)
@@ -630,7 +629,7 @@ png_write_PLTE(png_structp png_ptr, png_colorp palette, png_uint_32 num_pal)

   png_write_chunk_start(png_ptr, (png_bytep)png_PLTE,
     (png_uint_32)(num_pal * 3));
-#ifndef PNG_NO_POINTER_INDEXING
+#ifdef PNG_POINTER_INDEXING_SUPPORTED
   for (i = 0, pal_ptr = palette; i < num_pal; i++, pal_ptr++)
   {
      buf[0] = pal_ptr->red;
@@ -657,9 +656,8 @@ png_write_PLTE(png_structp png_ptr, png_colorp palette, png_uint_32 num_pal)
 void /* PRIVATE */
 png_write_IDAT(png_structp png_ptr, png_bytep data, png_size_t length)
 {
-#ifdef PNG_USE_LOCAL_ARRAYS
   PNG_IDAT;
-#endif
+
   png_debug(1, "in png_write_IDAT");

   /* Optimize the CMF field in the zlib stream. */
@@ -711,28 +709,27 @@ png_write_IDAT(png_structp png_ptr, png_bytep data, png_size_t length)
 void /* PRIVATE */
 png_write_IEND(png_structp png_ptr)
 {
-#ifdef PNG_USE_LOCAL_ARRAYS
   PNG_IEND;
-#endif
+
   png_debug(1, "in png_write_IEND");
+
   png_write_chunk(png_ptr, (png_bytep)png_IEND, NULL,
     (png_size_t)0);
   png_ptr->mode |= PNG_HAVE_IEND;
 }

-#if defined(PNG_WRITE_gAMA_SUPPORTED)
+#ifdef PNG_WRITE_gAMA_SUPPORTED
 /* Write a gAMA chunk */
 #ifdef PNG_FLOATING_POINT_SUPPORTED
 void /* PRIVATE */
 png_write_gAMA(png_structp png_ptr, double file_gamma)
 {
-#ifdef PNG_USE_LOCAL_ARRAYS
   PNG_gAMA;
-#endif
   png_uint_32 igamma;
   png_byte buf[4];

   png_debug(1, "in png_write_gAMA");
+
   /* file_gamma is saved in 1/100,000ths */
   igamma = (png_uint_32)(file_gamma * 100000.0 + 0.5);
   png_save_uint_32(buf, igamma);
@@ -743,12 +740,11 @@ png_write_gAMA(png_structp png_ptr, double file_gamma)
 void /* PRIVATE */
 png_write_gAMA_fixed(png_structp png_ptr, png_fixed_point file_gamma)
 {
-#ifdef PNG_USE_LOCAL_ARRAYS
   PNG_gAMA;
-#endif
   png_byte buf[4];

   png_debug(1, "in png_write_gAMA");
+
   /* file_gamma is saved in 1/100,000ths */
   png_save_uint_32(buf, (png_uint_32)file_gamma);
   png_write_chunk(png_ptr, (png_bytep)png_gAMA, buf, (png_size_t)4);
@@ -756,17 +752,16 @@ png_write_gAMA_fixed(png_structp png_ptr, png_fixed_point file_gamma)
 #endif
 #endif

-#if defined(PNG_WRITE_sRGB_SUPPORTED)
+#ifdef PNG_WRITE_sRGB_SUPPORTED
 /* Write a sRGB chunk */
 void /* PRIVATE */
 png_write_sRGB(png_structp png_ptr, int srgb_intent)
 {
-#ifdef PNG_USE_LOCAL_ARRAYS
   PNG_sRGB;
-#endif
   png_byte buf[1];

   png_debug(1, "in png_write_sRGB");
+
   if (srgb_intent >= PNG_sRGB_INTENT_LAST)
         png_warning(png_ptr,
            "Invalid sRGB rendering intent specified");
@@ -775,15 +770,13 @@ png_write_sRGB(png_structp png_ptr, int srgb_intent)
 }
 #endif

-#if defined(PNG_WRITE_iCCP_SUPPORTED)
+#ifdef PNG_WRITE_iCCP_SUPPORTED
 /* Write an iCCP chunk */
 void /* PRIVATE */
 png_write_iCCP(png_structp png_ptr, png_charp name, int compression_type,
   png_charp profile, int profile_len)
 {
-#ifdef PNG_USE_LOCAL_ARRAYS
   PNG_iCCP;
-#endif
   png_size_t name_len;
   png_charp new_name;
   compression_state comp;
@@ -814,6 +807,14 @@ png_write_iCCP(png_structp png_ptr, png_charp name, int compression_type,
          ((*( (png_bytep)profile + 2))<< 8) |
          ((*( (png_bytep)profile + 3))    );

+   if (embedded_profile_len < 0)
+   {
+      png_warning(png_ptr,
+        "Embedded profile length in iCCP chunk is negative");
+      png_free(png_ptr, new_name);
+      return;
+   }
+
   if (profile_len < embedded_profile_len)
   {
      png_warning(png_ptr,
@@ -848,25 +849,24 @@ png_write_iCCP(png_structp png_ptr, png_charp name, int compression_type,
 }
 #endif

-#if defined(PNG_WRITE_sPLT_SUPPORTED)
+#ifdef PNG_WRITE_sPLT_SUPPORTED
 /* Write a sPLT chunk */
 void /* PRIVATE */
 png_write_sPLT(png_structp png_ptr, png_sPLT_tp spalette)
 {
-#ifdef PNG_USE_LOCAL_ARRAYS
   PNG_sPLT;
-#endif
   png_size_t name_len;
   png_charp new_name;
   png_byte entrybuf[10];
   png_size_t entry_size = (spalette->depth == 8 ? 6 : 10);
   png_size_t palette_size = entry_size * spalette->nentries;
   png_sPLT_entryp ep;
-#ifdef PNG_NO_POINTER_INDEXING
+#ifndef PNG_POINTER_INDEXING_SUPPORTED
   int i;
 #endif

   png_debug(1, "in png_write_sPLT");
+
   if ((name_len = png_check_keyword(png_ptr,spalette->name, &new_name))==0)
      return;

@@ -878,7 +878,7 @@ png_write_sPLT(png_structp png_ptr, png_sPLT_tp spalette)
   png_write_chunk_data(png_ptr, (png_bytep)&spalette->depth, (png_size_t)1);

   /* Loop through each palette entry, writing appropriately */
-#ifndef PNG_NO_POINTER_INDEXING
+#ifdef PNG_POINTER_INDEXING_SUPPORTED
   for (ep = spalette->entries; ep<spalette->entries + spalette->nentries; ep++)
   {
      if (spalette->depth == 8)
@@ -928,18 +928,17 @@ png_write_sPLT(png_structp png_ptr, png_sPLT_tp spalette)
 }
 #endif

-#if defined(PNG_WRITE_sBIT_SUPPORTED)
+#ifdef PNG_WRITE_sBIT_SUPPORTED
 /* Write the sBIT chunk */
 void /* PRIVATE */
 png_write_sBIT(png_structp png_ptr, png_color_8p sbit, int color_type)
 {
-#ifdef PNG_USE_LOCAL_ARRAYS
   PNG_sBIT;
-#endif
   png_byte buf[4];
   png_size_t size;

   png_debug(1, "in png_write_sBIT");
+
   /* Make sure we don't depend upon the order of PNG_COLOR_8 */
   if (color_type & PNG_COLOR_MASK_COLOR)
   {
@@ -984,7 +983,7 @@ png_write_sBIT(png_structp png_ptr, png_color_8p sbit, int color_type)
 }
 #endif

-#if defined(PNG_WRITE_cHRM_SUPPORTED)
+#ifdef PNG_WRITE_cHRM_SUPPORTED
 /* Write the cHRM chunk */
 #ifdef PNG_FLOATING_POINT_SUPPORTED
 void /* PRIVATE */
@@ -992,9 +991,7 @@ png_write_cHRM(png_structp png_ptr, double white_x, double white_y,
   double red_x, double red_y, double green_x, double green_y,
   double blue_x, double blue_y)
 {
-#ifdef PNG_USE_LOCAL_ARRAYS
   PNG_cHRM;
-#endif
   png_byte buf[32];

   png_fixed_point int_white_x, int_white_y, int_red_x, int_red_y,
@@ -1011,7 +1008,7 @@ png_write_cHRM(png_structp png_ptr, double white_x, double white_y,
   int_blue_x  = (png_uint_32)(blue_x  * 100000.0 + 0.5);
   int_blue_y  = (png_uint_32)(blue_y  * 100000.0 + 0.5);

-#if !defined(PNG_NO_CHECK_cHRM)
+#ifdef PNG_CHECK_cHRM_SUPPORTED
   if (png_check_cHRM_fixed(png_ptr, int_white_x, int_white_y,
      int_red_x, int_red_y, int_green_x, int_green_y, int_blue_x, int_blue_y))
 #endif
@@ -1041,14 +1038,13 @@ png_write_cHRM_fixed(png_structp png_ptr, png_fixed_point white_x,
   png_fixed_point green_x, png_fixed_point green_y, png_fixed_point blue_x,
   png_fixed_point blue_y)
 {
-#ifdef PNG_USE_LOCAL_ARRAYS
   PNG_cHRM;
-#endif
   png_byte buf[32];

   png_debug(1, "in png_write_cHRM");
+
   /* Each value is saved in 1/100,000ths */
-#if !defined(PNG_NO_CHECK_cHRM)
+#ifdef PNG_CHECK_cHRM_SUPPORTED
   if (png_check_cHRM_fixed(png_ptr, white_x, white_y, red_x, red_y,
      green_x, green_y, blue_x, blue_y))
 #endif
@@ -1071,18 +1067,17 @@ png_write_cHRM_fixed(png_structp png_ptr, png_fixed_point white_x,
 #endif
 #endif

-#if defined(PNG_WRITE_tRNS_SUPPORTED)
+#ifdef PNG_WRITE_tRNS_SUPPORTED
 /* Write the tRNS chunk */
 void /* PRIVATE */
-png_write_tRNS(png_structp png_ptr, png_bytep trans, png_color_16p tran,
+png_write_tRNS(png_structp png_ptr, png_bytep trans_alpha, png_color_16p tran,
   int num_trans, int color_type)
 {
-#ifdef PNG_USE_LOCAL_ARRAYS
   PNG_tRNS;
-#endif
   png_byte buf[6];

   png_debug(1, "in png_write_tRNS");
+
   if (color_type == PNG_COLOR_TYPE_PALETTE)
   {
      if (num_trans <= 0 || num_trans > (int)png_ptr->num_palette)
@@ -1091,7 +1086,7 @@ png_write_tRNS(png_structp png_ptr, png_bytep trans, png_color_16p tran,
         return;
      }
      /* Write the chunk out as it is */
-      png_write_chunk(png_ptr, (png_bytep)png_tRNS, trans,
+      png_write_chunk(png_ptr, (png_bytep)png_tRNS, trans_alpha,
        (png_size_t)num_trans);
   }
   else if (color_type == PNG_COLOR_TYPE_GRAY)
@@ -1127,21 +1122,20 @@ png_write_tRNS(png_structp png_ptr, png_bytep trans, png_color_16p tran,
 }
 #endif

-#if defined(PNG_WRITE_bKGD_SUPPORTED)
+#ifdef PNG_WRITE_bKGD_SUPPORTED
 /* Write the background chunk */
 void /* PRIVATE */
 png_write_bKGD(png_structp png_ptr, png_color_16p back, int color_type)
 {
-#ifdef PNG_USE_LOCAL_ARRAYS
   PNG_bKGD;
-#endif
   png_byte buf[6];

   png_debug(1, "in png_write_bKGD");
+
   if (color_type == PNG_COLOR_TYPE_PALETTE)
   {
      if (
-#if defined(PNG_MNG_FEATURES_SUPPORTED)
+#ifdef PNG_MNG_FEATURES_SUPPORTED
          (png_ptr->num_palette ||
          (!(png_ptr->mng_features_permitted & PNG_FLAG_MNG_EMPTY_PLTE))) &&
 #endif
@@ -1180,18 +1174,17 @@ png_write_bKGD(png_structp png_ptr, png_color_16p back, int color_type)
 }
 #endif

-#if defined(PNG_WRITE_hIST_SUPPORTED)
+#ifdef PNG_WRITE_hIST_SUPPORTED
 /* Write the histogram */
 void /* PRIVATE */
 png_write_hIST(png_structp png_ptr, png_uint_16p hist, int num_hist)
 {
-#ifdef PNG_USE_LOCAL_ARRAYS
   PNG_hIST;
-#endif
   int i;
   png_byte buf[3];

   png_debug(1, "in png_write_hIST");
+
   if (num_hist > (int)png_ptr->num_palette)
   {
      png_debug2(3, "num_hist = %d, num_palette = %d", num_hist,
@@ -1232,6 +1225,7 @@ png_check_keyword(png_structp png_ptr, png_charp key, png_charpp new_key)
   int kwarn=0;

   png_debug(1, "in png_check_keyword");
+
   *new_key = NULL;

   if (key == NULL || (key_len = png_strlen(key)) == 0)
@@ -1255,7 +1249,7 @@ png_check_keyword(png_structp png_ptr, png_charp key, png_charpp new_key)
      if ((png_byte)*kp < 0x20 ||
         ((png_byte)*kp > 0x7E && (png_byte)*kp < 0xA1))
      {
-#if !defined(PNG_NO_STDIO)
+#ifdef PNG_STDIO_SUPPORTED
         char msg[40];

         png_snprintf(msg, 40,
@@ -1341,19 +1335,18 @@ png_check_keyword(png_structp png_ptr, png_charp key, png_charpp new_key)
 }
 #endif

-#if defined(PNG_WRITE_tEXt_SUPPORTED)
+#ifdef PNG_WRITE_tEXt_SUPPORTED
 /* Write a tEXt chunk */
 void /* PRIVATE */
 png_write_tEXt(png_structp png_ptr, png_charp key, png_charp text,
   png_size_t text_len)
 {
-#ifdef PNG_USE_LOCAL_ARRAYS
   PNG_tEXt;
-#endif
   png_size_t key_len;
   png_charp new_key;

   png_debug(1, "in png_write_tEXt");
+
   if ((key_len = png_check_keyword(png_ptr, key, &new_key))==0)
      return;

@@ -1381,15 +1374,13 @@ png_write_tEXt(png_structp png_ptr, png_charp key, png_charp text,
 }
 #endif

-#if defined(PNG_WRITE_zTXt_SUPPORTED)
+#ifdef PNG_WRITE_zTXt_SUPPORTED
 /* Write a compressed text chunk */
 void /* PRIVATE */
 png_write_zTXt(png_structp png_ptr, png_charp key, png_charp text,
   png_size_t text_len, int compression)
 {
-#ifdef PNG_USE_LOCAL_ARRAYS
   PNG_zTXt;
-#endif
   png_size_t key_len;
   char buf[1];
   png_charp new_key;
@@ -1441,15 +1432,13 @@ png_write_zTXt(png_structp png_ptr, png_charp key, png_charp text,
 }
 #endif

-#if defined(PNG_WRITE_iTXt_SUPPORTED)
+#ifdef PNG_WRITE_iTXt_SUPPORTED
 /* Write an iTXt chunk */
 void /* PRIVATE */
 png_write_iTXt(png_structp png_ptr, int compression, png_charp key,
    png_charp lang, png_charp lang_key, png_charp text)
 {
-#ifdef PNG_USE_LOCAL_ARRAYS
   PNG_iTXt;
-#endif
   png_size_t lang_len, key_len, lang_key_len, text_len;
   png_charp new_lang;
   png_charp new_key = NULL;
@@ -1530,18 +1519,17 @@ png_write_iTXt(png_structp png_ptr, int compression, png_charp key,
 }
 #endif

-#if defined(PNG_WRITE_oFFs_SUPPORTED)
+#ifdef PNG_WRITE_oFFs_SUPPORTED
 /* Write the oFFs chunk */
 void /* PRIVATE */
 png_write_oFFs(png_structp png_ptr, png_int_32 x_offset, png_int_32 y_offset,
   int unit_type)
 {
-#ifdef PNG_USE_LOCAL_ARRAYS
   PNG_oFFs;
-#endif
   png_byte buf[9];

   png_debug(1, "in png_write_oFFs");
+
   if (unit_type >= PNG_OFFSET_LAST)
      png_warning(png_ptr, "Unrecognized unit type for oFFs chunk");

@@ -1552,15 +1540,13 @@ png_write_oFFs(png_structp png_ptr, png_int_32 x_offset, png_int_32 y_offset,
   png_write_chunk(png_ptr, (png_bytep)png_oFFs, buf, (png_size_t)9);
 }
 #endif
-#if defined(PNG_WRITE_pCAL_SUPPORTED)
+#ifdef PNG_WRITE_pCAL_SUPPORTED
 /* Write the pCAL chunk (described in the PNG extensions document) */
 void /* PRIVATE */
 png_write_pCAL(png_structp png_ptr, png_charp purpose, png_int_32 X0,
   png_int_32 X1, int type, int nparams, png_charp units, png_charpp params)
 {
-#ifdef PNG_USE_LOCAL_ARRAYS
   PNG_pCAL;
-#endif
   png_size_t purpose_len, units_len, total_len;
   png_uint_32p params_len;
   png_byte buf[10];
@@ -1568,6 +1554,7 @@ png_write_pCAL(png_structp png_ptr, png_charp purpose, png_int_32 X0,
   int i;

   png_debug1(1, "in png_write_pCAL (%d parameters)", nparams);
+
   if (type >= PNG_EQUATION_LAST)
      png_warning(png_ptr, "Unrecognized equation type for pCAL chunk");

@@ -1614,15 +1601,13 @@ png_write_pCAL(png_structp png_ptr, png_charp purpose, png_int_32 X0,
 }
 #endif

-#if defined(PNG_WRITE_sCAL_SUPPORTED)
+#ifdef PNG_WRITE_sCAL_SUPPORTED
 /* Write the sCAL chunk */
-#if defined(PNG_FLOATING_POINT_SUPPORTED) && !defined(PNG_NO_STDIO)
+#if defined(PNG_FLOATING_POINT_SUPPORTED) && defined(PNG_STDIO_SUPPORTED)
 void /* PRIVATE */
 png_write_sCAL(png_structp png_ptr, int unit, double width, double height)
 {
-#ifdef PNG_USE_LOCAL_ARRAYS
   PNG_sCAL;
-#endif
   char buf[64];
   png_size_t total_len;

@@ -1643,9 +1628,7 @@ void /* PRIVATE */
 png_write_sCAL_s(png_structp png_ptr, int unit, png_charp width,
   png_charp height)
 {
-#ifdef PNG_USE_LOCAL_ARRAYS
   PNG_sCAL;
-#endif
   png_byte buf[64];
   png_size_t wlen, hlen, total_len;

@@ -1671,19 +1654,18 @@ png_write_sCAL_s(png_structp png_ptr, int unit, png_charp width,
 #endif
 #endif

-#if defined(PNG_WRITE_pHYs_SUPPORTED)
+#ifdef PNG_WRITE_pHYs_SUPPORTED
 /* Write the pHYs chunk */
 void /* PRIVATE */
 png_write_pHYs(png_structp png_ptr, png_uint_32 x_pixels_per_unit,
   png_uint_32 y_pixels_per_unit,
   int unit_type)
 {
-#ifdef PNG_USE_LOCAL_ARRAYS
   PNG_pHYs;
-#endif
   png_byte buf[9];

   png_debug(1, "in png_write_pHYs");
+
   if (unit_type >= PNG_RESOLUTION_LAST)
      png_warning(png_ptr, "Unrecognized unit type for pHYs chunk");

@@ -1695,19 +1677,18 @@ png_write_pHYs(png_structp png_ptr, png_uint_32 x_pixels_per_unit,
 }
 #endif

-#if defined(PNG_WRITE_tIME_SUPPORTED)
+#ifdef PNG_WRITE_tIME_SUPPORTED
 /* Write the tIME chunk.  Use either png_convert_from_struct_tm()
 * or png_convert_from_time_t(), or fill in the structure yourself.
 */
 void /* PRIVATE */
 png_write_tIME(png_structp png_ptr, png_timep mod_time)
 {
-#ifdef PNG_USE_LOCAL_ARRAYS
   PNG_tIME;
-#endif
   png_byte buf[7];

   png_debug(1, "in png_write_tIME");
+
   if (mod_time->month  > 12 || mod_time->month  < 1 ||
       mod_time->day    > 31 || mod_time->day    < 1 ||
       mod_time->hour   > 23 || mod_time->second > 60)
@@ -1732,7 +1713,6 @@ void /* PRIVATE */
 png_write_start_row(png_structp png_ptr)
 {
 #ifdef PNG_WRITE_INTERLACING_SUPPORTED
-#ifdef PNG_USE_LOCAL_ARRAYS
   /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */

   /* Start of interlace block */
@@ -1746,12 +1726,12 @@ png_write_start_row(png_structp png_ptr)

   /* Offset to next interlace block in the y direction */
   int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
-#endif
 #endif

   png_size_t buf_size;

   png_debug(1, "in png_write_start_row");
+
   buf_size = (png_size_t)(PNG_ROWBYTES(
      png_ptr->usr_channels*png_ptr->usr_bit_depth, png_ptr->width) + 1);

@@ -1760,7 +1740,7 @@ png_write_start_row(png_structp png_ptr)
     (png_alloc_size_t)buf_size);
   png_ptr->row_buf[0] = PNG_FILTER_VALUE_NONE;

-#ifndef PNG_NO_WRITE_FILTER
+#ifdef PNG_WRITE_FILTER_SUPPORTED
   /* Set up filtering buffer, if using this filter */
   if (png_ptr->do_filter & PNG_FILTER_SUB)
   {
@@ -1772,38 +1752,32 @@ png_write_start_row(png_structp png_ptr)
   /* We only need to keep the previous row if we are using one of these. */
   if (png_ptr->do_filter & (PNG_FILTER_AVG | PNG_FILTER_UP | PNG_FILTER_PAETH))
   {
-     /* Set up previous row buffer */
-#ifdef PNG_CALLOC_SUPPORTED
-     png_ptr->prev_row = (png_bytep)png_calloc(png_ptr,
-        (png_alloc_size_t)buf_size);
-#else
-     png_ptr->prev_row = (png_bytep)png_malloc(png_ptr,
-        (png_uint_32)buf_size);
-     png_memset(png_ptr->prev_row, 0, buf_size);
-#endif
+      /* Set up previous row buffer */
+      png_ptr->prev_row = (png_bytep)png_calloc(png_ptr,
+         (png_alloc_size_t)buf_size);

      if (png_ptr->do_filter & PNG_FILTER_UP)
      {
         png_ptr->up_row = (png_bytep)png_malloc(png_ptr,
-           (png_size_t)(png_ptr->rowbytes + 1));
+            (png_size_t)(png_ptr->rowbytes + 1));
         png_ptr->up_row[0] = PNG_FILTER_VALUE_UP;
      }

      if (png_ptr->do_filter & PNG_FILTER_AVG)
      {
         png_ptr->avg_row = (png_bytep)png_malloc(png_ptr,
-           (png_alloc_size_t)(png_ptr->rowbytes + 1));
+            (png_alloc_size_t)(png_ptr->rowbytes + 1));
         png_ptr->avg_row[0] = PNG_FILTER_VALUE_AVG;
      }

      if (png_ptr->do_filter & PNG_FILTER_PAETH)
      {
         png_ptr->paeth_row = (png_bytep)png_malloc(png_ptr,
-           (png_size_t)(png_ptr->rowbytes + 1));
+            (png_size_t)(png_ptr->rowbytes + 1));
         png_ptr->paeth_row[0] = PNG_FILTER_VALUE_PAETH;
      }
   }
-#endif /* PNG_NO_WRITE_FILTER */
+#endif /* PNG_WRITE_FILTER_SUPPORTED */

 #ifdef PNG_WRITE_INTERLACING_SUPPORTED
   /* If interlaced, we need to set up width and height of pass */
@@ -1837,7 +1811,6 @@ void /* PRIVATE */
 png_write_finish_row(png_structp png_ptr)
 {
 #ifdef PNG_WRITE_INTERLACING_SUPPORTED
-#ifdef PNG_USE_LOCAL_ARRAYS
   /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */

   /* Start of interlace block */
@@ -1851,12 +1824,12 @@ png_write_finish_row(png_structp png_ptr)

   /* Offset to next interlace block in the y direction */
   int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
-#endif
 #endif

   int ret;

   png_debug(1, "in png_write_finish_row");
+
   /* Next row */
   png_ptr->row_number++;

@@ -1944,7 +1917,7 @@ png_write_finish_row(png_structp png_ptr)
   png_ptr->zstream.data_type = Z_BINARY;
 }

-#if defined(PNG_WRITE_INTERLACING_SUPPORTED)
+#ifdef PNG_WRITE_INTERLACING_SUPPORTED
 /* Pick out the correct pixels for the interlace pass.
 * The basic idea here is to go through the row with a source
 * pointer and a destination pointer (sp and dp), and copy the
@@ -1955,7 +1928,6 @@ png_write_finish_row(png_structp png_ptr)
 void /* PRIVATE */
 png_do_write_interlace(png_row_infop row_info, png_bytep row, int pass)
 {
-#ifdef PNG_USE_LOCAL_ARRAYS
   /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */

   /* Start of interlace block */
@@ -1963,9 +1935,9 @@ png_do_write_interlace(png_row_infop row_info, png_bytep row, int pass)

   /* Offset to next interlace block */
   int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
-#endif

   png_debug(1, "in png_do_write_interlace");
+
   /* We don't have to do anything on the last pass (6) */
   if (pass < 6)
   {
@@ -2123,23 +2095,32 @@ void /* PRIVATE */
 png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
 {
   png_bytep best_row;
-#ifndef PNG_NO_WRITE_FILTER
+#ifdef PNG_WRITE_FILTER_SUPPORTED
   png_bytep prev_row, row_buf;
   png_uint_32 mins, bpp;
   png_byte filter_to_do = png_ptr->do_filter;
   png_uint_32 row_bytes = row_info->rowbytes;
-#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
   int num_p_filters = (int)png_ptr->num_prev_filters;
-#endif
+#endif 

   png_debug(1, "in png_write_find_filter");
+
+#ifndef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+  if (png_ptr->row_number == 0 && filter_to_do == PNG_ALL_FILTERS)
+  {
+      /* These will never be selected so we need not test them. */
+      filter_to_do &= ~(PNG_FILTER_UP | PNG_FILTER_PAETH);
+  }
+#endif 
+
   /* Find out how many bytes offset each pixel is */
   bpp = (row_info->pixel_depth + 7) >> 3;

   prev_row = png_ptr->prev_row;
 #endif
   best_row = png_ptr->row_buf;
-#ifndef PNG_NO_WRITE_FILTER
+#ifdef PNG_WRITE_FILTER_SUPPORTED
   row_buf = best_row;
   mins = PNG_MAXSUM;

@@ -2182,7 +2163,7 @@ png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
         sum += (v < 128) ? v : 256 - v;
      }

-#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
      if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
      {
         png_uint_32 sumhi, sumlo;
@@ -2246,7 +2227,7 @@ png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
      png_uint_32 i;
      int v;

-#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
      /* We temporarily increase the "minimum sum" by the factor we
       * would reduce the sum of this filter, so that we can do the
       * early exit comparison without scaling the sum each time.
@@ -2299,7 +2280,7 @@ png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
            break;
      }

-#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
      if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
      {
         int j;
@@ -2360,7 +2341,7 @@ png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
      int v;


-#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
      if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
      {
         int j;
@@ -2402,7 +2383,7 @@ png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
            break;
      }

-#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
      if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
      {
         int j;
@@ -2465,7 +2446,7 @@ png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
      png_uint_32 i;
      int v;

-#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
      if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
      {
         int j;
@@ -2514,7 +2495,7 @@ png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
            break;
      }

-#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
      if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
      {
         int j;
@@ -2598,7 +2579,7 @@ png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
      png_uint_32 i;
      int v;

-#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
      if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
      {
         int j;
@@ -2679,7 +2660,7 @@ png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
            break;
      }

-#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
      if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
      {
         int j;
@@ -2715,13 +2696,13 @@ png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
         best_row = png_ptr->paeth_row;
      }
   }
-#endif /* PNG_NO_WRITE_FILTER */
+#endif /* PNG_WRITE_FILTER_SUPPORTED */
   /* Do the actual writing of the filtered row data from the chosen filter. */

   png_write_filtered_row(png_ptr, best_row);

-#ifndef PNG_NO_WRITE_FILTER
-#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
+#ifdef PNG_WRITE_FILTER_SUPPORTED
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
   /* Save the type of filter we picked this time for future calculations */
   if (png_ptr->num_prev_filters > 0)
   {
@@ -2733,7 +2714,7 @@ png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
      png_ptr->prev_filters[j] = best_row[0];
   }
 #endif
-#endif /* PNG_NO_WRITE_FILTER */
+#endif /* PNG_WRITE_FILTER_SUPPORTED */
 }


@@ -2742,6 +2723,7 @@ void /* PRIVATE */
 png_write_filtered_row(png_structp png_ptr, png_bytep filtered_row)
 {
   png_debug(1, "in png_write_filtered_row");
+
   png_debug1(2, "filter = %d", filtered_row[0]);
   /* Set up the zlib input buffer */

@@ -2787,7 +2769,7 @@ png_write_filtered_row(png_structp png_ptr, png_bytep filtered_row)
   /* Finish row - updates counters and flushes zlib if last row */
   png_write_finish_row(png_ptr);

-#if defined(PNG_WRITE_FLUSH_SUPPORTED)
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
   png_ptr->flush_rows++;

   if (png_ptr->flush_dist > 0 &&
--- a/projects/beos/x86-shared.proj
+++ b/projects/beos/x86-shared.proj
--- a/projects/beos/x86-shared.txt
+++ b/projects/beos/x86-shared.txt
@@ -1,22 +0,0 @@
-This project builds a shared library version of libpng on x86 BeOS.
-
-It defines PNG_USE_PNGGCCRD, which activates the assembly code in
-pnggccrd.c; this hasn't been extensively tested on BeOS.
-
-To install:
-
-1) build
-
-   Note: As of version 1.0.10, you'll get a fair number of warnings when
-         you compile pnggccrd.c.  As far as I know, these are harmless,
-         but it would be better if someone fixed them.
-
-2) copy and png.h, pngconf.h somewhere; /boot/home/config/include (which
-   you'll have to make) is a good choice
-
-3) copy libpng.so to /boot/home/config/lib
-
-4) build your libpng.so applications (remember to include libz.a as
-   well when you link)
-
- Chris Herborth, March 27, 2001
--- a/projects/beos/x86-static.proj
+++ b/projects/beos/x86-static.proj
--- a/projects/beos/x86-static.txt
+++ b/projects/beos/x86-static.txt
@@ -1,22 +0,0 @@
-This project builds a static library version of libpng on x86 BeOS.
-
-It defines PNG_USE_PNGGCCRD, which activates the assembly code in
-pnggccrd.c; this hasn't been extensively tested on BeOS.
-
-To install:
-
-1) build
-
-   Note: As of version 1.0.10, you'll get a fair number of warnings when
-         you compile pnggccrd.c.  As far as I know, these are harmless,
-         but it would be better if someone fixed them.
-
-2) copy and png.h, pngconf.h somewhere; /boot/home/config/include (which
-   you'll have to make) is a good choice
-
-3) copy libpng.a to /boot/home/config/lib
-
-4) build your libpng.a applications (remember to include libz.a as
-   well when you link)
-
- Chris Herborth, March 27, 2001
--- a/projects/cbuilder5/README.txt
+++ b/projects/cbuilder5/README.txt
@@ -0,0 +1,11 @@
+The cbuilder5 project has not been updated to libpng-1.4.0.
+
+It needs to depend on pngpriv.h
+
+It needs to *not* depend on pnggccrd.c or pngvcrd.c
+
+It needs to DEFINE PNG_CONFIGURE_LIBPNG while building
+the library, but not while building an application.
+
+If an updated version is not received, this project will
+be removed when libpng-1.4.0 is released.
--- a/projects/netware.txt
+++ b/projects/netware.txt
@@ -1,6 +0,0 @@
-A set of project files is available for Netware.  Get
-libpng-1.2.5-project-netware.zip from a libpng distribution
-site such as http://libpng.sourceforge.net
-
-Put the zip file in this directory (projects) and then run
-"unzip -a libpng-1.2.5-project-netware.zip"
--- a/projects/visualc6/README.txt
+++ b/projects/visualc6/README.txt
@@ -35,13 +35,9 @@ This project builds the libpng binaries as follows:

 * Win32_DLL_Release\libpng14.dll      DLL build
 * Win32_DLL_Debug\libpng14d.dll       DLL build (debug version)
-* Win32_DLL_ASM_Release\libpng14.dll  DLL build using ASM code
-* Win32_DLL_ASM_Debug\libpng14d.dll   DLL build using ASM (debug version)
 * Win32_DLL_VB\libpng14vb.dll         DLL build for Visual Basic, using stdcall
 * Win32_LIB_Release\libpng.lib        static build
 * Win32_LIB_Debug\libpngd.lib         static build (debug version)
-* Win32_LIB_ASM_Release\libpng.lib    static build using ASM code
-* Win32_LIB_ASM_Debug\libpngd.lib     static build using ASM (debug version)


 Notes:
--- a/projects/visualc6/libpng.dsp
+++ b/projects/visualc6/libpng.dsp
@@ -20,13 +20,9 @@ CFG=libpng - Win32 DLL Release
 !MESSAGE 
 !MESSAGE "libpng - Win32 DLL Release" (based on "Win32 (x86) Dynamic-Link Library")
 !MESSAGE "libpng - Win32 DLL Debug" (based on "Win32 (x86) Dynamic-Link Library")
-!MESSAGE "libpng - Win32 DLL ASM Release" (based on "Win32 (x86) Dynamic-Link Library")
-!MESSAGE "libpng - Win32 DLL ASM Debug" (based on "Win32 (x86) Dynamic-Link Library")
 !MESSAGE "libpng - Win32 DLL VB" (based on "Win32 (x86) Dynamic-Link Library")
 !MESSAGE "libpng - Win32 LIB Release" (based on "Win32 (x86) Static Library")
 !MESSAGE "libpng - Win32 LIB Debug" (based on "Win32 (x86) Static Library")
-!MESSAGE "libpng - Win32 LIB ASM Release" (based on "Win32 (x86) Static Library")
-!MESSAGE "libpng - Win32 LIB ASM Debug" (based on "Win32 (x86) Static Library")
 !MESSAGE 

 # Begin Project
@@ -56,8 +52,8 @@ MTL=midl.exe
 # ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /win32
 # ADD MTL /nologo /D "NDEBUG" /mktyplib203 /win32
 RSC=rc.exe
-# ADD BASE RSC /l 0x409 /d "NDEBUG"
-# ADD RSC /l 0x409 /i "..\.." /d "NDEBUG"
+# ADD BASE RSC /l 0x409 /d "PNG_CONFIGURE_LIBPNG" /d "NDEBUG"
+# ADD RSC /l 0x409 /i "..\.." /d "PNG_CONFIGURE_LIBPNG" /d "NDEBUG"
 BSC32=bscmake.exe
 # ADD BASE BSC32 /nologo
 # ADD BSC32 /nologo
@@ -87,8 +83,8 @@ MTL=midl.exe
 # ADD BASE MTL /nologo /D "_DEBUG" /mktyplib203 /win32
 # ADD MTL /nologo /D "_DEBUG" /mktyplib203 /win32
 RSC=rc.exe
-# ADD BASE RSC /l 0x409 /d "_DEBUG"
-# ADD RSC /l 0x409 /i "..\.." /d "_DEBUG" /d PNG_DEBUG=1
+# ADD BASE RSC /l 0x409 /d "PNG_CONFIGURE_LIBPNG" /d "_DEBUG"
+# ADD RSC /l 0x409 /i "..\.." /d "PNG_CONFIGURE_LIBPNG" /d "_DEBUG" /d PNG_DEBUG=1
 BSC32=bscmake.exe
 # ADD BASE BSC32 /nologo
 # ADD BSC32 /nologo
@@ -96,68 +92,6 @@ LINK32=link.exe
 # ADD BASE LINK32 /nologo /dll /debug /machine:I386 /pdbtype:sept
 # ADD LINK32 zlib1d.lib /nologo /dll /debug /machine:I386 /out:"Win32_DLL_Debug\libpng14d.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_Debug"

-!ELSEIF  "$(CFG)" == "libpng - Win32 DLL ASM Release"
-
-# PROP BASE Use_MFC 0
-# PROP BASE Use_Debug_Libraries 0
-# PROP BASE Output_Dir "libpng___Win32_DLL_ASM_Release"
-# PROP BASE Intermediate_Dir "libpng___Win32_DLL_ASM_Release"
-# PROP BASE Target_Dir ""
-# PROP Use_MFC 0
-# PROP Use_Debug_Libraries 0
-# PROP Output_Dir "Win32_DLL_ASM_Release"
-# PROP Intermediate_Dir "Win32_DLL_ASM_Release"
-# PROP Ignore_Export_Lib 0
-# PROP Target_Dir ""
-CPP=cl.exe
-# ADD BASE CPP /nologo /MD /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
-# SUBTRACT BASE CPP /YX /Yc /Yu
-# ADD CPP /nologo /MD /W3 /O2 /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "NDEBUG" /D "PNG_USE_PNGVCRD" /D "PNG_BUILD_DLL" /D "ZLIB_DLL" /D "PNG_LIBPNG_SPECIALBUILD" /FD /c
-# SUBTRACT CPP /YX /Yc /Yu
-MTL=midl.exe
-# ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /win32
-# ADD MTL /nologo /D "NDEBUG" /mktyplib203 /win32
-RSC=rc.exe
-# ADD BASE RSC /l 0x409 /d "NDEBUG"
-# ADD RSC /l 0x409 /i "..\.." /d "NDEBUG" /d PNG_LIBPNG_SPECIALBUILD=""""Use MMX instructions""""
-BSC32=bscmake.exe
-# ADD BASE BSC32 /nologo
-# ADD BSC32 /nologo
-LINK32=link.exe
-# ADD BASE LINK32 /nologo /dll /machine:I386
-# ADD LINK32 zlib1.lib /nologo /dll /machine:I386 /out:"Win32_DLL_ASM_Release\libpng14.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_ASM_Release"
-
-!ELSEIF  "$(CFG)" == "libpng - Win32 DLL ASM Debug"
-
-# PROP BASE Use_MFC 0
-# PROP BASE Use_Debug_Libraries 1
-# PROP BASE Output_Dir "libpng___Win32_DLL_ASM_Debug"
-# PROP BASE Intermediate_Dir "libpng___Win32_DLL_ASM_Debug"
-# PROP BASE Target_Dir ""
-# PROP Use_MFC 0
-# PROP Use_Debug_Libraries 1
-# PROP Output_Dir "Win32_DLL_ASM_Debug"
-# PROP Intermediate_Dir "Win32_DLL_ASM_Debug"
-# PROP Ignore_Export_Lib 0
-# PROP Target_Dir ""
-CPP=cl.exe
-# ADD BASE CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
-# SUBTRACT BASE CPP /YX /Yc /Yu
-# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "_DEBUG" /D "DEBUG" /D PNG_DEBUG=1 /D "PNG_USE_PNGVCRD" /D "PNG_BUILD_DLL" /D "ZLIB_DLL" /D "PNG_LIBPNG_SPECIALBUILD" /FD /GZ /c
-# SUBTRACT CPP /YX /Yc /Yu
-MTL=midl.exe
-# ADD BASE MTL /nologo /D "_DEBUG" /mktyplib203 /win32
-# ADD MTL /nologo /D "_DEBUG" /mktyplib203 /win32
-RSC=rc.exe
-# ADD BASE RSC /l 0x409 /d "_DEBUG"
-# ADD RSC /l 0x409 /i "..\.." /d "_DEBUG" /d PNG_DEBUG=1 /d PNG_LIBPNG_SPECIALBUILD=""""Use MMX instructions""""
-BSC32=bscmake.exe
-# ADD BASE BSC32 /nologo
-# ADD BSC32 /nologo
-LINK32=link.exe
-# ADD BASE LINK32 /nologo /dll /debug /machine:I386 /pdbtype:sept
-# ADD LINK32 zlib1d.lib /nologo /dll /debug /machine:I386 /out:"Win32_DLL_ASM_Debug\libpng14d.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_ASM_Debug"
-
 !ELSEIF  "$(CFG)" == "libpng - Win32 DLL VB"

 # PROP BASE Use_MFC 0
@@ -180,8 +114,8 @@ MTL=midl.exe
 # ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /win32
 # ADD MTL /nologo /D "NDEBUG" /mktyplib203 /win32
 RSC=rc.exe
-# ADD BASE RSC /l 0x409 /d "NDEBUG"
-# ADD RSC /l 0x409 /i "..\.." /d "NDEBUG" /dPNG_LIBPNG_DLLFNAME_POSTFIX=""""VB"""" /dPNG_LIBPNG_SPECIALBUILD=""""__stdcall calling convention used for exported functions""""
+# ADD BASE RSC /l 0x409 /d "PNG_CONFIGURE_LIBPNG" /d "NDEBUG"
+# ADD RSC /l 0x409 /i "..\.." /d "PNG_CONFIGURE_LIBPNG" /d "NDEBUG" /dPNG_LIBPNG_DLLFNAME_POSTFIX=""""VB"""" /dPNG_LIBPNG_SPECIALBUILD=""""__stdcall calling convention used for exported functions""""
 BSC32=bscmake.exe
 # ADD BASE BSC32 /nologo
 # ADD BSC32 /nologo
@@ -213,8 +147,8 @@ CPP=cl.exe
 # ADD CPP /nologo /MD /W3 /O2 /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "NDEBUG" /FD /c
 # SUBTRACT CPP /YX /Yc /Yu
 RSC=rc.exe
-# ADD BASE RSC /l 0x409 /d "NDEBUG"
-# ADD RSC /l 0x409 /i "..\.." /d "NDEBUG"
+# ADD BASE RSC /l 0x409 /d "PNG_CONFIGURE_LIBPNG" /d "NDEBUG"
+# ADD RSC /l 0x409 /i "..\.." /d "PNG_CONFIGURE_LIBPNG" /d "NDEBUG"
 BSC32=bscmake.exe
 # ADD BASE BSC32 /nologo
 # ADD BSC32 /nologo
@@ -240,8 +174,8 @@ CPP=cl.exe
 # ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "_DEBUG" /D "DEBUG" /D PNG_DEBUG=1 /FD /GZ /c
 # SUBTRACT CPP /YX /Yc /Yu
 RSC=rc.exe
-# ADD BASE RSC /l 0x409 /d "_DEBUG"
-# ADD RSC /l 0x409 /d "_DEBUG"
+# ADD BASE RSC /l 0x409 /d "PNG_CONFIGURE_LIBPNG" /d "_DEBUG"
+# ADD RSC /l 0x409 /d "PNG_CONFIGURE_LIBPNG" /d "_DEBUG"
 BSC32=bscmake.exe
 # ADD BASE BSC32 /nologo
 # ADD BSC32 /nologo
@@ -249,73 +183,15 @@ LIB32=link.exe -lib
 # ADD BASE LIB32 /nologo
 # ADD LIB32 /nologo /out:"Win32_LIB_Debug\libpngd.lib"

-!ELSEIF  "$(CFG)" == "libpng - Win32 LIB ASM Release"
-
-# PROP BASE Use_MFC 0
-# PROP BASE Use_Debug_Libraries 0
-# PROP BASE Output_Dir "libpng___Win32_LIB_ASM_Release"
-# PROP BASE Intermediate_Dir "libpng___Win32_LIB_ASM_Release"
-# PROP BASE Target_Dir ""
-# PROP Use_MFC 0
-# PROP Use_Debug_Libraries 0
-# PROP Output_Dir "Win32_LIB_ASM_Release"
-# PROP Intermediate_Dir "Win32_LIB_ASM_Release"
-# PROP Target_Dir ""
-CPP=cl.exe
-# ADD BASE CPP /nologo /MD /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
-# SUBTRACT BASE CPP /YX /Yc /Yu
-# ADD CPP /nologo /MD /W3 /O2 /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "NDEBUG" /D "PNG_USE_PNGVCRD" /D "PNG_LIBPNG_SPECIALBUILD" /FD /c
-# SUBTRACT CPP /YX /Yc /Yu
-RSC=rc.exe
-# ADD BASE RSC /l 0x409 /d "NDEBUG"
-# ADD RSC /l 0x409 /i "..\.." /d "NDEBUG"
-BSC32=bscmake.exe
-# ADD BASE BSC32 /nologo
-# ADD BSC32 /nologo
-LIB32=link.exe -lib
-# ADD BASE LIB32 /nologo
-# ADD LIB32 /nologo
-
-!ELSEIF  "$(CFG)" == "libpng - Win32 LIB ASM Debug"
-
-# PROP BASE Use_MFC 0
-# PROP BASE Use_Debug_Libraries 1
-# PROP BASE Output_Dir "libpng___Win32_LIB_ASM_Debug"
-# PROP BASE Intermediate_Dir "libpng___Win32_LIB_ASM_Debug"
-# PROP BASE Target_Dir ""
-# PROP Use_MFC 0
-# PROP Use_Debug_Libraries 1
-# PROP Output_Dir "Win32_LIB_ASM_Debug"
-# PROP Intermediate_Dir "Win32_LIB_ASM_Debug"
-# PROP Target_Dir ""
-CPP=cl.exe
-# ADD BASE CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
-# SUBTRACT BASE CPP /YX /Yc /Yu
-# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "_DEBUG" /D "DEBUG" /D PNG_DEBUG=1 /D "PNG_USE_PNGVCRD" /D "PNG_LIBPNG_SPECIALBUILD" /FD /GZ /c
-# SUBTRACT CPP /YX /Yc /Yu
-RSC=rc.exe
-# ADD BASE RSC /l 0x409 /d "_DEBUG"
-# ADD RSC /l 0x409 /d "_DEBUG"
-BSC32=bscmake.exe
-# ADD BASE BSC32 /nologo
-# ADD BSC32 /nologo
-LIB32=link.exe -lib
-# ADD BASE LIB32 /nologo
-# ADD LIB32 /nologo /out:"Win32_LIB_ASM_Debug\libpngd.lib"
-
 !ENDIF 

 # Begin Target

 # Name "libpng - Win32 DLL Release"
 # Name "libpng - Win32 DLL Debug"
-# Name "libpng - Win32 DLL ASM Release"
-# Name "libpng - Win32 DLL ASM Debug"
 # Name "libpng - Win32 DLL VB"
 # Name "libpng - Win32 LIB Release"
 # Name "libpng - Win32 LIB Debug"
-# Name "libpng - Win32 LIB ASM Release"
-# Name "libpng - Win32 LIB ASM Debug"
 # Begin Group "Source Files"

 # PROP Default_Filter "cpp;c;cxx;rc;def;r;odl;idl;hpj;bat"
@@ -365,51 +241,12 @@ SOURCE=..\..\pngtrans.c
 # End Source File
 # Begin Source File

-SOURCE=..\..\pngvcrd.c
-
-!IF  "$(CFG)" == "libpng - Win32 DLL Release"
-
-# PROP Exclude_From_Build 1
-
-!ELSEIF  "$(CFG)" == "libpng - Win32 DLL Debug"
-
-# PROP Exclude_From_Build 1
-
-!ELSEIF  "$(CFG)" == "libpng - Win32 DLL ASM Release"
-
-!ELSEIF  "$(CFG)" == "libpng - Win32 DLL ASM Debug"
-
-!ELSEIF  "$(CFG)" == "libpng - Win32 DLL VB"
-
-# PROP Exclude_From_Build 1
-
-!ELSEIF  "$(CFG)" == "libpng - Win32 LIB Release"
-
-# PROP Exclude_From_Build 1
-
-!ELSEIF  "$(CFG)" == "libpng - Win32 LIB Debug"
-
-# PROP Exclude_From_Build 1
-
-!ELSEIF  "$(CFG)" == "libpng - Win32 LIB ASM Release"
-
-!ELSEIF  "$(CFG)" == "libpng - Win32 LIB ASM Debug"
-
-!ENDIF 
-
-# End Source File
-# Begin Source File
-
 SOURCE=..\..\scripts\pngwin.def

 !IF  "$(CFG)" == "libpng - Win32 DLL Release"

 !ELSEIF  "$(CFG)" == "libpng - Win32 DLL Debug"

-!ELSEIF  "$(CFG)" == "libpng - Win32 DLL ASM Release"
-
-!ELSEIF  "$(CFG)" == "libpng - Win32 DLL ASM Debug"
-
 !ELSEIF  "$(CFG)" == "libpng - Win32 DLL VB"

 # PROP Exclude_From_Build 1
@@ -422,14 +259,6 @@ SOURCE=..\..\scripts\pngwin.def

 # PROP Exclude_From_Build 1

-!ELSEIF  "$(CFG)" == "libpng - Win32 LIB ASM Release"
-
-# PROP Exclude_From_Build 1
-
-!ELSEIF  "$(CFG)" == "libpng - Win32 LIB ASM Debug"
-
-# PROP Exclude_From_Build 1
-
 !ENDIF 

 # End Source File
@@ -477,10 +306,6 @@ SOURCE=..\..\scripts\pngwin.rc

 !ELSEIF  "$(CFG)" == "libpng - Win32 DLL Debug"

-!ELSEIF  "$(CFG)" == "libpng - Win32 DLL ASM Release"
-
-!ELSEIF  "$(CFG)" == "libpng - Win32 DLL ASM Debug"
-
 !ELSEIF  "$(CFG)" == "libpng - Win32 DLL VB"

 !ELSEIF  "$(CFG)" == "libpng - Win32 LIB Release"
@@ -491,14 +316,6 @@ SOURCE=..\..\scripts\pngwin.rc

 # PROP Exclude_From_Build 1

-!ELSEIF  "$(CFG)" == "libpng - Win32 LIB ASM Release"
-
-# PROP Exclude_From_Build 1
-
-!ELSEIF  "$(CFG)" == "libpng - Win32 LIB ASM Debug"
-
-# PROP Exclude_From_Build 1
-
 !ENDIF 

 # End Source File
--- a/projects/visualc6/pngtest.dsp
+++ b/projects/visualc6/pngtest.dsp
@@ -19,12 +19,8 @@ CFG=pngtest - Win32 DLL Release
 !MESSAGE 
 !MESSAGE "pngtest - Win32 DLL Release" (based on "Win32 (x86) Console Application")
 !MESSAGE "pngtest - Win32 DLL Debug" (based on "Win32 (x86) Console Application")
-!MESSAGE "pngtest - Win32 DLL ASM Release" (based on "Win32 (x86) Console Application")
-!MESSAGE "pngtest - Win32 DLL ASM Debug" (based on "Win32 (x86) Console Application")
 !MESSAGE "pngtest - Win32 LIB Release" (based on "Win32 (x86) Console Application")
 !MESSAGE "pngtest - Win32 LIB Debug" (based on "Win32 (x86) Console Application")
-!MESSAGE "pngtest - Win32 LIB ASM Release" (based on "Win32 (x86) Console Application")
-!MESSAGE "pngtest - Win32 LIB ASM Debug" (based on "Win32 (x86) Console Application")
 !MESSAGE 

 # Begin Project
@@ -49,7 +45,7 @@ RSC=rc.exe
 # PROP Target_Dir ""
 # ADD BASE CPP /nologo /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
 # SUBTRACT BASE CPP /YX
-# ADD CPP /nologo /MD /W3 /O2 /I "..\..\..\zlib" /D "WIN32" /D "NDEBUG" /D "PNG_DLL" /D "PNG_NO_STDIO" /D "PNG_NO_GLOBAL_ARRAYS" /FD /c
+# ADD CPP /nologo /MD /W3 /O2 /I "..\..\..\zlib" /D "WIN32" /D "NDEBUG" /D "PNG_DLL" /D "PNG_NO_STDIO" /FD /c
 # SUBTRACT CPP /YX
 # ADD BASE RSC /l 0x409 /d "NDEBUG"
 # ADD RSC /l 0x409 /d "NDEBUG"
@@ -81,7 +77,7 @@ PostBuild_Cmds=set path=$(outdir);..\..\..\zlib\projects\visualc6\Win32_DLL_Rele
 # PROP Target_Dir ""
 # ADD BASE CPP /nologo /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
 # SUBTRACT BASE CPP /YX
-# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /I "..\..\..\zlib" /D "WIN32" /D "_DEBUG" /D "PNG_DLL" /D "PNG_NO_STDIO" /D "PNG_NO_GLOBAL_ARRAYS" /FD /GZ /c
+# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /I "..\..\..\zlib" /D "WIN32" /D "_DEBUG" /D "PNG_DLL" /D "PNG_NO_STDIO" /FD /GZ /c
 # SUBTRACT CPP /YX
 # ADD BASE RSC /l 0x409 /d "_DEBUG"
 # ADD RSC /l 0x409 /d "_DEBUG"
@@ -98,70 +94,6 @@ PostBuild_Desc=[Run Test]
 PostBuild_Cmds=set path=$(outdir);..\..\..\zlib\projects\visualc6\Win32_DLL_Debug;	$(outdir)\pngtest.exe ..\..\pngtest.png
 # End Special Build Tool

-!ELSEIF  "$(CFG)" == "pngtest - Win32 DLL ASM Release"
-
-# PROP BASE Use_MFC 0
-# PROP BASE Use_Debug_Libraries 0
-# PROP BASE Output_Dir "pngtest___Win32_DLL_ASM_Release"
-# PROP BASE Intermediate_Dir "pngtest___Win32_DLL_ASM_Release"
-# PROP BASE Target_Dir ""
-# PROP Use_MFC 0
-# PROP Use_Debug_Libraries 0
-# PROP Output_Dir "Win32_DLL_ASM_Release"
-# PROP Intermediate_Dir "Win32_DLL_ASM_Release"
-# PROP Ignore_Export_Lib 0
-# PROP Target_Dir ""
-# ADD BASE CPP /nologo /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
-# SUBTRACT BASE CPP /YX
-# ADD CPP /nologo /MD /W3 /O2 /I "..\..\..\zlib" /D "WIN32" /D "NDEBUG" /D "PNG_DLL" /D "PNG_NO_STDIO" /D "PNG_NO_GLOBAL_ARRAYS" /FD /c
-# SUBTRACT CPP /YX
-# ADD BASE RSC /l 0x409 /d "NDEBUG"
-# ADD RSC /l 0x409 /d "NDEBUG"
-BSC32=bscmake.exe
-# ADD BASE BSC32 /nologo
-# ADD BSC32 /nologo
-LINK32=link.exe
-# ADD BASE LINK32 /nologo /subsystem:console /machine:I386
-# ADD LINK32 Win32_DLL_ASM_Release\libpng14.lib ..\..\..\zlib\projects\visualc6\Win32_DLL_ASM_Release\zlib1.lib /nologo /subsystem:console /machine:I386
-# Begin Special Build Tool
-OutDir=.\Win32_DLL_ASM_Release
-SOURCE="$(InputPath)"
-PostBuild_Desc=[Run Test]
-PostBuild_Cmds=set path=$(outdir);..\..\..\zlib\projects\visualc6\Win32_DLL_ASM_Release;	$(outdir)\pngtest.exe ..\..\pngtest.png
-# End Special Build Tool
-
-!ELSEIF  "$(CFG)" == "pngtest - Win32 DLL ASM Debug"
-
-# PROP BASE Use_MFC 0
-# PROP BASE Use_Debug_Libraries 1
-# PROP BASE Output_Dir "pngtest___Win32_DLL_ASM_Debug"
-# PROP BASE Intermediate_Dir "pngtest___Win32_DLL_ASM_Debug"
-# PROP BASE Target_Dir ""
-# PROP Use_MFC 0
-# PROP Use_Debug_Libraries 1
-# PROP Output_Dir "Win32_DLL_ASM_Debug"
-# PROP Intermediate_Dir "Win32_DLL_ASM_Debug"
-# PROP Ignore_Export_Lib 0
-# PROP Target_Dir ""
-# ADD BASE CPP /nologo /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
-# SUBTRACT BASE CPP /YX
-# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /I "..\..\..\zlib" /D "WIN32" /D "_DEBUG" /D "PNG_DLL" /D "PNG_NO_STDIO" /D "PNG_NO_GLOBAL_ARRAYS" /FD /GZ /c
-# SUBTRACT CPP /YX
-# ADD BASE RSC /l 0x409 /d "_DEBUG"
-# ADD RSC /l 0x409 /d "_DEBUG"
-BSC32=bscmake.exe
-# ADD BASE BSC32 /nologo
-# ADD BSC32 /nologo
-LINK32=link.exe
-# ADD BASE LINK32 /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
-# ADD LINK32 Win32_DLL_ASM_Debug\libpng14d.lib ..\..\..\zlib\projects\visualc6\Win32_DLL_ASM_Debug\zlib1d.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
-# Begin Special Build Tool
-OutDir=.\Win32_DLL_ASM_Debug
-SOURCE="$(InputPath)"
-PostBuild_Desc=[Run Test]
-PostBuild_Cmds=set path=$(outdir);..\..\..\zlib\projects\visualc6\Win32_DLL_ASM_Debug;	$(outdir)\pngtest.exe ..\..\pngtest.png
-# End Special Build Tool
-
 !ELSEIF  "$(CFG)" == "pngtest - Win32 LIB Release"

 # PROP BASE Use_MFC 0
@@ -226,82 +158,14 @@ PostBuild_Desc=[Run Test]
 PostBuild_Cmds=$(outdir)\pngtest.exe ..\..\pngtest.png
 # End Special Build Tool

-!ELSEIF  "$(CFG)" == "pngtest - Win32 LIB ASM Release"
-
-# PROP BASE Use_MFC 0
-# PROP BASE Use_Debug_Libraries 0
-# PROP BASE Output_Dir "pngtest___Win32_LIB_ASM_Release"
-# PROP BASE Intermediate_Dir "pngtest___Win32_LIB_ASM_Release"
-# PROP BASE Target_Dir ""
-# PROP Use_MFC 0
-# PROP Use_Debug_Libraries 0
-# PROP Output_Dir "Win32_LIB_ASM_Release"
-# PROP Intermediate_Dir "Win32_LIB_ASM_Release"
-# PROP Ignore_Export_Lib 0
-# PROP Target_Dir ""
-# ADD BASE CPP /nologo /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
-# SUBTRACT BASE CPP /YX
-# ADD CPP /nologo /MD /W3 /O2 /I "..\..\..\zlib" /D "WIN32" /D "NDEBUG" /FD /c
-# SUBTRACT CPP /YX
-# ADD BASE RSC /l 0x409 /d "NDEBUG"
-# ADD RSC /l 0x409 /d "NDEBUG"
-BSC32=bscmake.exe
-# ADD BASE BSC32 /nologo
-# ADD BSC32 /nologo
-LINK32=link.exe
-# ADD BASE LINK32 /nologo /subsystem:console /machine:I386
-# ADD LINK32 Win32_LIB_ASM_Release\libpng.lib ..\..\..\zlib\projects\visualc6\Win32_LIB_ASM_Release\zlib.lib /nologo /subsystem:console /machine:I386
-# Begin Special Build Tool
-OutDir=.\Win32_LIB_ASM_Release
-SOURCE="$(InputPath)"
-PostBuild_Desc=[Run Test]
-PostBuild_Cmds=$(outdir)\pngtest.exe ..\..\pngtest.png
-# End Special Build Tool
-
-!ELSEIF  "$(CFG)" == "pngtest - Win32 LIB ASM Debug"
-
-# PROP BASE Use_MFC 0
-# PROP BASE Use_Debug_Libraries 1
-# PROP BASE Output_Dir "pngtest___Win32_LIB_ASM_Debug"
-# PROP BASE Intermediate_Dir "pngtest___Win32_LIB_ASM_Debug"
-# PROP BASE Target_Dir ""
-# PROP Use_MFC 0
-# PROP Use_Debug_Libraries 1
-# PROP Output_Dir "Win32_LIB_ASM_Debug"
-# PROP Intermediate_Dir "Win32_LIB_ASM_Debug"
-# PROP Ignore_Export_Lib 0
-# PROP Target_Dir ""
-# ADD BASE CPP /nologo /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
-# SUBTRACT BASE CPP /YX
-# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /I "..\..\..\zlib" /D "WIN32" /D "_DEBUG" /FD /GZ /c
-# SUBTRACT CPP /YX
-# ADD BASE RSC /l 0x409 /d "_DEBUG"
-# ADD RSC /l 0x409 /d "_DEBUG"
-BSC32=bscmake.exe
-# ADD BASE BSC32 /nologo
-# ADD BSC32 /nologo
-LINK32=link.exe
-# ADD BASE LINK32 /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
-# ADD LINK32 Win32_LIB_ASM_Debug\libpngd.lib ..\..\..\zlib\projects\visualc6\Win32_LIB_ASM_Debug\zlibd.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
-# Begin Special Build Tool
-OutDir=.\Win32_LIB_ASM_Debug
-SOURCE="$(InputPath)"
-PostBuild_Desc=[Run Test]
-PostBuild_Cmds=$(outdir)\pngtest.exe ..\..\pngtest.png
-# End Special Build Tool
-
 !ENDIF 

 # Begin Target

 # Name "pngtest - Win32 DLL Release"
 # Name "pngtest - Win32 DLL Debug"
-# Name "pngtest - Win32 DLL ASM Release"
-# Name "pngtest - Win32 DLL ASM Debug"
 # Name "pngtest - Win32 LIB Release"
 # Name "pngtest - Win32 LIB Debug"
-# Name "pngtest - Win32 LIB ASM Release"
-# Name "pngtest - Win32 LIB ASM Debug"
 # Begin Group "Source Files"

 # PROP Default_Filter "cpp;c;cxx;rc;def;r;odl;idl;hpj;bat"
--- a/projects/visualc71/README.txt
+++ b/projects/visualc71/README.txt
@@ -36,13 +36,9 @@ This project builds the libpng binaries as follows:

 * Win32_DLL_Release\libpng14.dll      DLL build
 * Win32_DLL_Debug\libpng14d.dll       DLL build (debug version)
-* Win32_DLL_ASM_Release\libpng14.dll  DLL build using ASM code
-* Win32_DLL_ASM_Debug\libpng14d.dll   DLL build using ASM (debug version)
 * Win32_DLL_VB\libpng14vb.dll         DLL build for Visual Basic, using stdcall
 * Win32_LIB_Release\libpng.lib        static build
 * Win32_LIB_Debug\libpngd.lib         static build (debug version)
-* Win32_LIB_ASM_Release\libpng.lib    static build using ASM code
-* Win32_LIB_ASM_Debug\libpngd.lib     static build using ASM (debug version)

 Notes:

--- a/projects/visualc71/README_zlib.txt
+++ b/projects/visualc71/README_zlib.txt
@@ -37,10 +37,6 @@ This project builds the zlib binaries as follows:

 * Win32_DLL_Release\zlib1.dll       DLL build
 * Win32_DLL_Debug\zlib1d.dll        DLL build (debug version)
-* Win32_DLL_ASM_Release\zlib1.dll   DLL build using ASM code
-* Win32_DLL_ASM_Debug\zlib1d.dll    DLL build using ASM code (debug version)
 * Win32_LIB_Release\zlib.lib        static build
 * Win32_LIB_Debug\zlibd.lib         static build (debug version)
-* Win32_LIB_ASM_Release\zlib.lib    static build using ASM code
-* Win32_LIB_ASM_Debug\zlibd.lib     static build using ASM code (debug version)

--- a/projects/visualc71/libpng.sln
+++ b/projects/visualc71/libpng.sln
@@ -15,67 +15,39 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "zlib", "zlib.vcproj", "{2D4
 EndProject
 Global
 	GlobalSection(SolutionConfiguration) = preSolution
-		DLL ASM Debug = DLL ASM Debug
-		DLL ASM Release = DLL ASM Release
 		DLL Debug = DLL Debug
 		DLL Release = DLL Release
 		DLL VB = DLL VB
-		LIB ASM Debug = LIB ASM Debug
-		LIB ASM Release = LIB ASM Release
 		LIB Debug = LIB Debug
 		LIB Release = LIB Release
 	EndGlobalSection
 	GlobalSection(ProjectConfiguration) = postSolution
-		{0008960E-E0DD-41A6-8265-00B31DDB4C21}.DLL ASM Debug.ActiveCfg = DLL ASM Debug|Win32
-		{0008960E-E0DD-41A6-8265-00B31DDB4C21}.DLL ASM Debug.Build.0 = DLL ASM Debug|Win32
-		{0008960E-E0DD-41A6-8265-00B31DDB4C21}.DLL ASM Release.ActiveCfg = DLL ASM Release|Win32
-		{0008960E-E0DD-41A6-8265-00B31DDB4C21}.DLL ASM Release.Build.0 = DLL ASM Release|Win32
 		{0008960E-E0DD-41A6-8265-00B31DDB4C21}.DLL Debug.ActiveCfg = DLL Debug|Win32
 		{0008960E-E0DD-41A6-8265-00B31DDB4C21}.DLL Debug.Build.0 = DLL Debug|Win32
 		{0008960E-E0DD-41A6-8265-00B31DDB4C21}.DLL Release.ActiveCfg = DLL Release|Win32
 		{0008960E-E0DD-41A6-8265-00B31DDB4C21}.DLL Release.Build.0 = DLL Release|Win32
 		{0008960E-E0DD-41A6-8265-00B31DDB4C21}.DLL VB.ActiveCfg = DLL VB|Win32
 		{0008960E-E0DD-41A6-8265-00B31DDB4C21}.DLL VB.Build.0 = DLL VB|Win32
-		{0008960E-E0DD-41A6-8265-00B31DDB4C21}.LIB ASM Debug.ActiveCfg = LIB ASM Debug|Win32
-		{0008960E-E0DD-41A6-8265-00B31DDB4C21}.LIB ASM Debug.Build.0 = LIB ASM Debug|Win32
-		{0008960E-E0DD-41A6-8265-00B31DDB4C21}.LIB ASM Release.ActiveCfg = LIB ASM Release|Win32
-		{0008960E-E0DD-41A6-8265-00B31DDB4C21}.LIB ASM Release.Build.0 = LIB ASM Release|Win32
 		{0008960E-E0DD-41A6-8265-00B31DDB4C21}.LIB Debug.ActiveCfg = LIB Debug|Win32
 		{0008960E-E0DD-41A6-8265-00B31DDB4C21}.LIB Debug.Build.0 = LIB Debug|Win32
 		{0008960E-E0DD-41A6-8265-00B31DDB4C21}.LIB Release.ActiveCfg = LIB Release|Win32
 		{0008960E-E0DD-41A6-8265-00B31DDB4C21}.LIB Release.Build.0 = LIB Release|Win32
-		{FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.DLL ASM Debug.ActiveCfg = DLL ASM Debug|Win32
-		{FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.DLL ASM Debug.Build.0 = DLL ASM Debug|Win32
-		{FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.DLL ASM Release.ActiveCfg = DLL ASM Release|Win32
-		{FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.DLL ASM Release.Build.0 = DLL ASM Release|Win32
 		{FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.DLL Debug.ActiveCfg = DLL Debug|Win32
 		{FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.DLL Debug.Build.0 = DLL Debug|Win32
 		{FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.DLL Release.ActiveCfg = DLL Release|Win32
 		{FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.DLL Release.Build.0 = DLL Release|Win32
 		{FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.DLL VB.ActiveCfg = DLL VB|Win32
 		{FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.DLL VB.Build.0 = DLL VB|Win32
-		{FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.LIB ASM Debug.ActiveCfg = LIB ASM Debug|Win32
-		{FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.LIB ASM Debug.Build.0 = LIB ASM Debug|Win32
-		{FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.LIB ASM Release.ActiveCfg = LIB ASM Release|Win32
-		{FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.LIB ASM Release.Build.0 = LIB ASM Release|Win32
 		{FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.LIB Debug.ActiveCfg = LIB Debug|Win32
 		{FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.LIB Debug.Build.0 = LIB Debug|Win32
 		{FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.LIB Release.ActiveCfg = LIB Release|Win32
 		{FD1C2F86-9EEF-47BD-95A4-530917E17FDA}.LIB Release.Build.0 = LIB Release|Win32
-		{2D4F8105-7D21-454C-9932-B47CAB71A5C0}.DLL ASM Debug.ActiveCfg = DLL ASM Debug|Win32
-		{2D4F8105-7D21-454C-9932-B47CAB71A5C0}.DLL ASM Debug.Build.0 = DLL ASM Debug|Win32
-		{2D4F8105-7D21-454C-9932-B47CAB71A5C0}.DLL ASM Release.ActiveCfg = DLL ASM Release|Win32
-		{2D4F8105-7D21-454C-9932-B47CAB71A5C0}.DLL ASM Release.Build.0 = DLL ASM Release|Win32
 		{2D4F8105-7D21-454C-9932-B47CAB71A5C0}.DLL Debug.ActiveCfg = DLL Debug|Win32
 		{2D4F8105-7D21-454C-9932-B47CAB71A5C0}.DLL Debug.Build.0 = DLL Debug|Win32
 		{2D4F8105-7D21-454C-9932-B47CAB71A5C0}.DLL Release.ActiveCfg = DLL Release|Win32
 		{2D4F8105-7D21-454C-9932-B47CAB71A5C0}.DLL Release.Build.0 = DLL Release|Win32
 		{2D4F8105-7D21-454C-9932-B47CAB71A5C0}.DLL VB.ActiveCfg = DLL Release|Win32
 		{2D4F8105-7D21-454C-9932-B47CAB71A5C0}.DLL VB.Build.0 = DLL Release|Win32
-		{2D4F8105-7D21-454C-9932-B47CAB71A5C0}.LIB ASM Debug.ActiveCfg = LIB ASM Debug|Win32
-		{2D4F8105-7D21-454C-9932-B47CAB71A5C0}.LIB ASM Debug.Build.0 = LIB ASM Debug|Win32
-		{2D4F8105-7D21-454C-9932-B47CAB71A5C0}.LIB ASM Release.ActiveCfg = LIB ASM Release|Win32
-		{2D4F8105-7D21-454C-9932-B47CAB71A5C0}.LIB ASM Release.Build.0 = LIB ASM Release|Win32
 		{2D4F8105-7D21-454C-9932-B47CAB71A5C0}.LIB Debug.ActiveCfg = LIB Debug|Win32
 		{2D4F8105-7D21-454C-9932-B47CAB71A5C0}.LIB Debug.Build.0 = LIB Debug|Win32
 		{2D4F8105-7D21-454C-9932-B47CAB71A5C0}.LIB Release.ActiveCfg = LIB Release|Win32
--- a/projects/visualc71/libpng.vcproj
+++ b/projects/visualc71/libpng.vcproj
@@ -18,7 +18,7 @@
 				Name="VCCLCompilerTool"
 				InlineFunctionExpansion="1"
 				AdditionalIncludeDirectories="..\..;..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;NDEBUG;PNG_BUILD_DLL;ZLIB_DLL"
+				PreprocessorDefinitions="WIN32;NDEBUG;PNG_BUILD_DLL;ZLIB_DLL;_CRT_SECURE_NO_WARNINGS"
 				StringPooling="TRUE"
 				RuntimeLibrary="2"
 				EnableFunctionLevelLinking="TRUE"
@@ -66,7 +66,7 @@
 				Name="VCCLCompilerTool"
 				Optimization="0"
 				AdditionalIncludeDirectories="..\..;..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;_DEBUG;DEBUG;PNG_DEBUG=1;PNG_BUILD_DLL;ZLIB_DLL"
+				PreprocessorDefinitions="WIN32;_DEBUG;DEBUG;PNG_DEBUG=1;PNG_BUILD_DLL;ZLIB_DLL;_CRT_SECURE_NO_WARNINGS"
 				BasicRuntimeChecks="3"
 				RuntimeLibrary="3"
 				UsePrecompiledHeader="3"
@@ -105,104 +105,6 @@
 			<Tool
 				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
 		</Configuration>
-		<Configuration
-			Name="DLL ASM Release|Win32"
-			OutputDirectory=".\Win32_DLL_ASM_Release"
-			IntermediateDirectory=".\Win32_DLL_ASM_Release"
-			ConfigurationType="2">
-			<Tool
-				Name="VCCLCompilerTool"
-				InlineFunctionExpansion="1"
-				AdditionalIncludeDirectories="..\..;..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;NDEBUG;PNG_USE_PNGVCRD;PNG_BUILD_DLL;ZLIB_DLL;PNG_LIBPNG_SPECIALBUILD"
-				StringPooling="TRUE"
-				RuntimeLibrary="2"
-				EnableFunctionLevelLinking="TRUE"
-				UsePrecompiledHeader="3"
-				PrecompiledHeaderThrough="png.h"
-				WarningLevel="3"
-				CompileAs="0"/>
-			<Tool
-				Name="VCCustomBuildTool"/>
-			<Tool
-				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/libpng14.dll"
-				LinkIncremental="1"
-				ModuleDefinitionFile="..\..\scripts\pngwin.def"/>
-			<Tool
-				Name="VCMIDLTool"/>
-			<Tool
-				Name="VCPostBuildEventTool"/>
-			<Tool
-				Name="VCPreBuildEventTool"/>
-			<Tool
-				Name="VCPreLinkEventTool"/>
-			<Tool
-				Name="VCResourceCompilerTool"
-				AdditionalOptions="/d PNG_LIBPNG_SPECIALBUILD=&quot;&quot;&quot;&quot;Use MMX instructions&quot;&quot;&quot;&quot;"
-				PreprocessorDefinitions="NDEBUG"
-				Culture="1033"
-				AdditionalIncludeDirectories="..\..;..\..\..\zlib;$(IntDir)"/>
-			<Tool
-				Name="VCWebServiceProxyGeneratorTool"/>
-			<Tool
-				Name="VCXMLDataGeneratorTool"/>
-			<Tool
-				Name="VCWebDeploymentTool"/>
-			<Tool
-				Name="VCManagedWrapperGeneratorTool"/>
-			<Tool
-				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
-		</Configuration>
-		<Configuration
-			Name="DLL ASM Debug|Win32"
-			OutputDirectory=".\Win32_DLL_ASM_Debug"
-			IntermediateDirectory=".\Win32_DLL_ASM_Debug"
-			ConfigurationType="2">
-			<Tool
-				Name="VCCLCompilerTool"
-				Optimization="0"
-				AdditionalIncludeDirectories="..\..;..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;_DEBUG;DEBUG;PNG_DEBUG=1;PNG_USE_PNGVCRD;PNG_BUILD_DLL;ZLIB_DLL;PNG_LIBPNG_SPECIALBUILD"
-				BasicRuntimeChecks="3"
-				RuntimeLibrary="3"
-				UsePrecompiledHeader="3"
-				PrecompiledHeaderThrough="png.h"
-				WarningLevel="3"
-				DebugInformationFormat="4"
-				CompileAs="0"/>
-			<Tool
-				Name="VCCustomBuildTool"/>
-			<Tool
-				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/libpng14d.dll"
-				ModuleDefinitionFile="..\..\scripts\pngwin.def"
-				GenerateDebugInformation="TRUE"/>
-			<Tool
-				Name="VCMIDLTool"/>
-			<Tool
-				Name="VCPostBuildEventTool"/>
-			<Tool
-				Name="VCPreBuildEventTool"/>
-			<Tool
-				Name="VCPreLinkEventTool"/>
-			<Tool
-				Name="VCResourceCompilerTool"
-				AdditionalOptions="/d PNG_LIBPNG_SPECIALBUILD=&quot;&quot;&quot;&quot;Use MMX instructions&quot;&quot;&quot;&quot;"
-				PreprocessorDefinitions="_DEBUG,PNG_DEBUG=1"
-				Culture="1033"
-				AdditionalIncludeDirectories="..\..;..\..\..\zlib;$(IntDir)"/>
-			<Tool
-				Name="VCWebServiceProxyGeneratorTool"/>
-			<Tool
-				Name="VCXMLDataGeneratorTool"/>
-			<Tool
-				Name="VCWebDeploymentTool"/>
-			<Tool
-				Name="VCManagedWrapperGeneratorTool"/>
-			<Tool
-				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
-		</Configuration>
 		<Configuration
 			Name="DLL VB|Win32"
 			OutputDirectory=".\Win32_DLL_VB"
@@ -212,7 +114,7 @@
 				Name="VCCLCompilerTool"
 				InlineFunctionExpansion="1"
 				AdditionalIncludeDirectories="..\..;..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;NDEBUG;PNG_BUILD_DLL;ZLIB_DLL;PNGAPI=__stdcall;PNG_NO_MODULEDEF;PNG_LIBPNG_SPECIALBUILD"
+				PreprocessorDefinitions="WIN32;NDEBUG;PNG_BUILD_DLL;ZLIB_DLL;PNGAPI=__stdcall;PNG_NO_MODULEDEF;PNG_LIBPNG_SPECIALBUILD;_CRT_SECURE_NO_WARNINGS"
 				StringPooling="TRUE"
 				RuntimeLibrary="2"
 				EnableFunctionLevelLinking="TRUE"
@@ -236,7 +138,7 @@
 				Name="VCPreLinkEventTool"/>
 			<Tool
 				Name="VCResourceCompilerTool"
-				AdditionalOptions="/d PNG_LIBPNG_DLLFNAME_POSTFIX=&quot;&quot;&quot;&quot;VB&quot;&quot;&quot;&quot; /d PNG_LIBPNG_SPECIALBUILD=&quot;&quot;&quot;&quot;__stdcall calling convention used for exported functions&quot;&quot;&quot;&quot;"
+				AdditionalOptions="/d PNG_CONFIGURE_LIBPNG /d PNG_LIBPNG_DLLFNAME_POSTFIX=&quot;&quot;&quot;&quot;VB&quot;&quot;&quot;&quot; /d PNG_LIBPNG_SPECIALBUILD=&quot;&quot;&quot;&quot;__stdcall calling convention used for exported functions&quot;&quot;&quot;&quot;"
 				PreprocessorDefinitions="NDEBUG"
 				Culture="1033"
 				AdditionalIncludeDirectories="..\..;..\..\..\zlib;$(IntDir)"/>
@@ -260,7 +162,7 @@
 				Name="VCCLCompilerTool"
 				InlineFunctionExpansion="1"
 				AdditionalIncludeDirectories="..\..;..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;NDEBUG"
+				PreprocessorDefinitions="WIN32;NDEBUG;_CRT_SECURE_NO_WARNINGS"
 				StringPooling="TRUE"
 				RuntimeLibrary="2"
 				EnableFunctionLevelLinking="TRUE"
@@ -301,89 +203,7 @@
 				Name="VCCLCompilerTool"
 				Optimization="0"
 				AdditionalIncludeDirectories="..\..;..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;_DEBUG;DEBUG;PNG_DEBUG=1"
-				BasicRuntimeChecks="3"
-				RuntimeLibrary="3"
-				UsePrecompiledHeader="3"
-				PrecompiledHeaderThrough="png.h"
-				WarningLevel="3"
-				DebugInformationFormat="4"
-				CompileAs="0"/>
-			<Tool
-				Name="VCCustomBuildTool"/>
-			<Tool
-				Name="VCLibrarianTool"
-				OutputFile="$(OutDir)/libpngd.lib"/>
-			<Tool
-				Name="VCMIDLTool"/>
-			<Tool
-				Name="VCPostBuildEventTool"/>
-			<Tool
-				Name="VCPreBuildEventTool"/>
-			<Tool
-				Name="VCPreLinkEventTool"/>
-			<Tool
-				Name="VCResourceCompilerTool"/>
-			<Tool
-				Name="VCWebServiceProxyGeneratorTool"/>
-			<Tool
-				Name="VCXMLDataGeneratorTool"/>
-			<Tool
-				Name="VCManagedWrapperGeneratorTool"/>
-			<Tool
-				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
-		</Configuration>
-		<Configuration
-			Name="LIB ASM Release|Win32"
-			OutputDirectory=".\Win32_LIB_ASM_Release"
-			IntermediateDirectory=".\Win32_LIB_ASM_Release"
-			ConfigurationType="4">
-			<Tool
-				Name="VCCLCompilerTool"
-				InlineFunctionExpansion="1"
-				AdditionalIncludeDirectories="..\..,..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;NDEBUG;PNG_USE_PNGVCRD;PNG_LIBPNG_SPECIALBUILD"
-				StringPooling="TRUE"
-				RuntimeLibrary="2"
-				EnableFunctionLevelLinking="TRUE"
-				UsePrecompiledHeader="3"
-				PrecompiledHeaderThrough="png.h"
-				WarningLevel="3"
-				CompileAs="0"/>
-			<Tool
-				Name="VCCustomBuildTool"/>
-			<Tool
-				Name="VCLibrarianTool"
-				OutputFile="$(OutDir)/libpng.lib"/>
-			<Tool
-				Name="VCMIDLTool"/>
-			<Tool
-				Name="VCPostBuildEventTool"/>
-			<Tool
-				Name="VCPreBuildEventTool"/>
-			<Tool
-				Name="VCPreLinkEventTool"/>
-			<Tool
-				Name="VCResourceCompilerTool"/>
-			<Tool
-				Name="VCWebServiceProxyGeneratorTool"/>
-			<Tool
-				Name="VCXMLDataGeneratorTool"/>
-			<Tool
-				Name="VCManagedWrapperGeneratorTool"/>
-			<Tool
-				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
-		</Configuration>
-		<Configuration
-			Name="LIB ASM Debug|Win32"
-			OutputDirectory=".\Win32_LIB_ASM_Debug"
-			IntermediateDirectory=".\Win32_LIB_ASM_Debug"
-			ConfigurationType="4">
-			<Tool
-				Name="VCCLCompilerTool"
-				Optimization="0"
-				AdditionalIncludeDirectories="..\..,..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;_DEBUG;DEBUG;PNG_DEBUG=1;PNG_USE_PNGVCRD;PNG_LIBPNG_SPECIALBUILD"
+				PreprocessorDefinitions="WIN32;_DEBUG;DEBUG;PNG_DEBUG=1;_CRT_SECURE_NO_WARNINGS"
 				BasicRuntimeChecks="3"
 				RuntimeLibrary="3"
 				UsePrecompiledHeader="3"
@@ -436,18 +256,6 @@
 						Name="VCCLCompilerTool"
 						UsePrecompiledHeader="0"/>
 				</FileConfiguration>
-				<FileConfiguration
-					Name="DLL ASM Release|Win32">
-					<Tool
-						Name="VCCLCompilerTool"
-						UsePrecompiledHeader="0"/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="DLL ASM Debug|Win32">
-					<Tool
-						Name="VCCLCompilerTool"
-						UsePrecompiledHeader="0"/>
-				</FileConfiguration>
 				<FileConfiguration
 					Name="DLL VB|Win32">
 					<Tool
@@ -466,18 +274,6 @@
 						Name="VCCLCompilerTool"
 						UsePrecompiledHeader="0"/>
 				</FileConfiguration>
-				<FileConfiguration
-					Name="LIB ASM Release|Win32">
-					<Tool
-						Name="VCCLCompilerTool"
-						UsePrecompiledHeader="0"/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="LIB ASM Debug|Win32">
-					<Tool
-						Name="VCCLCompilerTool"
-						UsePrecompiledHeader="0"/>
-				</FileConfiguration>
 			</File>
 			<File
 				RelativePath="..\..\pngerror.c">
@@ -493,18 +289,6 @@
 						Name="VCCLCompilerTool"
 						UsePrecompiledHeader="1"/>
 				</FileConfiguration>
-				<FileConfiguration
-					Name="DLL ASM Release|Win32">
-					<Tool
-						Name="VCCLCompilerTool"
-						UsePrecompiledHeader="1"/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="DLL ASM Debug|Win32">
-					<Tool
-						Name="VCCLCompilerTool"
-						UsePrecompiledHeader="1"/>
-				</FileConfiguration>
 				<FileConfiguration
 					Name="DLL VB|Win32">
 					<Tool
@@ -523,18 +307,6 @@
 						Name="VCCLCompilerTool"
 						UsePrecompiledHeader="1"/>
 				</FileConfiguration>
-				<FileConfiguration
-					Name="LIB ASM Release|Win32">
-					<Tool
-						Name="VCCLCompilerTool"
-						UsePrecompiledHeader="1"/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="LIB ASM Debug|Win32">
-					<Tool
-						Name="VCCLCompilerTool"
-						UsePrecompiledHeader="1"/>
-				</FileConfiguration>
 			</File>
 			<File
 				RelativePath="..\..\pngget.c">
@@ -563,39 +335,6 @@
 			<File
 				RelativePath="..\..\pngtrans.c">
 			</File>
-			<File
-				RelativePath="..\..\pngvcrd.c">
-				<FileConfiguration
-					Name="DLL Release|Win32"
-					ExcludedFromBuild="TRUE">
-					<Tool
-						Name="VCCLCompilerTool"/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="DLL Debug|Win32"
-					ExcludedFromBuild="TRUE">
-					<Tool
-						Name="VCCLCompilerTool"/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="DLL VB|Win32"
-					ExcludedFromBuild="TRUE">
-					<Tool
-						Name="VCCLCompilerTool"/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="LIB Release|Win32"
-					ExcludedFromBuild="TRUE">
-					<Tool
-						Name="VCCLCompilerTool"/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="LIB Debug|Win32"
-					ExcludedFromBuild="TRUE">
-					<Tool
-						Name="VCCLCompilerTool"/>
-				</FileConfiguration>
-			</File>
 			<File
 				RelativePath="..\..\scripts\pngwin.def">
 				<FileConfiguration
@@ -616,18 +355,6 @@
 					<Tool
 						Name="VCCustomBuildTool"/>
 				</FileConfiguration>
-				<FileConfiguration
-					Name="LIB ASM Release|Win32"
-					ExcludedFromBuild="TRUE">
-					<Tool
-						Name="VCCustomBuildTool"/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="LIB ASM Debug|Win32"
-					ExcludedFromBuild="TRUE">
-					<Tool
-						Name="VCCustomBuildTool"/>
-				</FileConfiguration>
 			</File>
 			<File
 				RelativePath="..\..\pngwio.c">
@@ -672,18 +399,6 @@
 					<Tool
 						Name="VCResourceCompilerTool"/>
 				</FileConfiguration>
-				<FileConfiguration
-					Name="LIB ASM Release|Win32"
-					ExcludedFromBuild="TRUE">
-					<Tool
-						Name="VCResourceCompilerTool"/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="LIB ASM Debug|Win32"
-					ExcludedFromBuild="TRUE">
-					<Tool
-						Name="VCResourceCompilerTool"/>
-				</FileConfiguration>
 			</File>
 		</Filter>
 		<File
@@ -704,22 +419,6 @@
 					CommandLine="nmake -f PRJ0041.mak IntDir=$(IntDir)"
 					Outputs="$(IntDir)\alloc.h;$(IntDir)\fp.h;$(IntDir)\m68881.h;$(IntDir)\mem.h;$(IntDir)\pngusr.h;$(IntDir)\strings.h;$(IntDir)\unistd.h;$(IntDir)\unixio.h"/>
 			</FileConfiguration>
-			<FileConfiguration
-				Name="DLL ASM Release|Win32">
-				<Tool
-					Name="VCCustomBuildTool"
-					Description="Create dummy include files to prevent &quot;Cannot find missing dependency...&quot; warnings."
-					CommandLine="nmake -f PRJ0041.mak IntDir=$(IntDir)"
-					Outputs="$(IntDir)\alloc.h;$(IntDir)\fp.h;$(IntDir)\m68881.h;$(IntDir)\mem.h;$(IntDir)\pngusr.h;$(IntDir)\strings.h;$(IntDir)\unistd.h;$(IntDir)\unixio.h"/>
-			</FileConfiguration>
-			<FileConfiguration
-				Name="DLL ASM Debug|Win32">
-				<Tool
-					Name="VCCustomBuildTool"
-					Description="Create dummy include files to prevent &quot;Cannot find missing dependency...&quot; warnings."
-					CommandLine="nmake -f PRJ0041.mak IntDir=$(IntDir)"
-					Outputs="$(IntDir)\alloc.h;$(IntDir)\fp.h;$(IntDir)\m68881.h;$(IntDir)\mem.h;$(IntDir)\pngusr.h;$(IntDir)\strings.h;$(IntDir)\unistd.h;$(IntDir)\unixio.h"/>
-			</FileConfiguration>
 			<FileConfiguration
 				Name="DLL VB|Win32">
 				<Tool
--- a/projects/visualc71/pngtest.vcproj
+++ b/projects/visualc71/pngtest.vcproj
@@ -18,7 +18,7 @@
 				Name="VCCLCompilerTool"
 				InlineFunctionExpansion="1"
 				AdditionalIncludeDirectories="..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;NDEBUG;PNG_DLL;PNG_NO_STDIO;PNG_NO_GLOBAL_ARRAYS"
+				PreprocessorDefinitions="WIN32;NDEBUG;PNG_DLL;PNG_NO_STDIO;_CRT_SECURE_NO_WARNINGS"
 				StringPooling="TRUE"
 				RuntimeLibrary="2"
 				EnableFunctionLevelLinking="TRUE"
@@ -65,103 +65,7 @@ $(TargetPath) ..\..\pngtest.png $(IntDir)\pngout.png"
 				Name="VCCLCompilerTool"
 				Optimization="0"
 				AdditionalIncludeDirectories="..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;_DEBUG;PNG_DLL;PNG_NO_STDIO;PNG_NO_GLOBAL_ARRAYS"
-				BasicRuntimeChecks="3"
-				RuntimeLibrary="3"
-				WarningLevel="3"
-				DebugInformationFormat="4"
-				CompileAs="0"/>
-			<Tool
-				Name="VCCustomBuildTool"
-				Description="Testing..."
-				CommandLine="set path=$(OutDir)\..;$(OutDir)\..\ZLib
-$(TargetPath) ..\..\pngtest.png $(IntDir)\pngout.png"
-				Outputs="$(IntDir)\pngout.png"/>
-			<Tool
-				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/pngtest.exe"
-				GenerateDebugInformation="TRUE"
-				SubSystem="1"
-				TargetMachine="1"/>
-			<Tool
-				Name="VCMIDLTool"/>
-			<Tool
-				Name="VCPostBuildEventTool"/>
-			<Tool
-				Name="VCPreBuildEventTool"/>
-			<Tool
-				Name="VCPreLinkEventTool"/>
-			<Tool
-				Name="VCResourceCompilerTool"/>
-			<Tool
-				Name="VCWebServiceProxyGeneratorTool"/>
-			<Tool
-				Name="VCXMLDataGeneratorTool"/>
-			<Tool
-				Name="VCWebDeploymentTool"/>
-			<Tool
-				Name="VCManagedWrapperGeneratorTool"/>
-			<Tool
-				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
-		</Configuration>
-		<Configuration
-			Name="DLL ASM Release|Win32"
-			OutputDirectory=".\Win32_DLL_ASM_Release\Test"
-			IntermediateDirectory=".\Win32_DLL_ASM_Release\Test"
-			ConfigurationType="1">
-			<Tool
-				Name="VCCLCompilerTool"
-				InlineFunctionExpansion="1"
-				AdditionalIncludeDirectories="..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;NDEBUG;PNG_DLL;PNG_NO_STDIO;PNG_NO_GLOBAL_ARRAYS"
-				StringPooling="TRUE"
-				RuntimeLibrary="2"
-				EnableFunctionLevelLinking="TRUE"
-				WarningLevel="3"
-				CompileAs="0"/>
-			<Tool
-				Name="VCCustomBuildTool"
-				Description="Testing..."
-				CommandLine="set path=$(OutDir)\..;$(OutDir)\..\ZLib
-$(TargetPath) ..\..\pngtest.png $(IntDir)\pngout.png"
-				Outputs="$(IntDir)\pngout.png"/>
-			<Tool
-				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/pngtest.exe"
-				LinkIncremental="1"
-				SubSystem="1"
-				TargetMachine="1"/>
-			<Tool
-				Name="VCMIDLTool"/>
-			<Tool
-				Name="VCPostBuildEventTool"/>
-			<Tool
-				Name="VCPreBuildEventTool"/>
-			<Tool
-				Name="VCPreLinkEventTool"/>
-			<Tool
-				Name="VCResourceCompilerTool"/>
-			<Tool
-				Name="VCWebServiceProxyGeneratorTool"/>
-			<Tool
-				Name="VCXMLDataGeneratorTool"/>
-			<Tool
-				Name="VCWebDeploymentTool"/>
-			<Tool
-				Name="VCManagedWrapperGeneratorTool"/>
-			<Tool
-				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
-		</Configuration>
-		<Configuration
-			Name="DLL ASM Debug|Win32"
-			OutputDirectory=".\Win32_DLL_ASM_Debug\Test"
-			IntermediateDirectory=".\Win32_DLL_ASM_Debug\Test"
-			ConfigurationType="1">
-			<Tool
-				Name="VCCLCompilerTool"
-				Optimization="0"
-				AdditionalIncludeDirectories="..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;_DEBUG;PNG_DLL;PNG_NO_STDIO;PNG_NO_GLOBAL_ARRAYS"
+				PreprocessorDefinitions="WIN32;_DEBUG;PNG_DLL;PNG_NO_STDIO;_CRT_SECURE_NO_WARNINGS"
 				BasicRuntimeChecks="3"
 				RuntimeLibrary="3"
 				WarningLevel="3"
@@ -209,7 +113,7 @@ $(TargetPath) ..\..\pngtest.png $(IntDir)\pngout.png"
 				Name="VCCLCompilerTool"
 				InlineFunctionExpansion="1"
 				AdditionalIncludeDirectories="..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;NDEBUG;PNG_DLL;PNG_NO_STDIO;PNG_NO_GLOBAL_ARRAYS;PNGAPI=__stdcall"
+				PreprocessorDefinitions="WIN32;NDEBUG;PNG_DLL;PNG_NO_STDIO;PNGAPI=__stdcall;_CRT_SECURE_NO_WARNINGS"
 				StringPooling="TRUE"
 				RuntimeLibrary="2"
 				EnableFunctionLevelLinking="TRUE"
@@ -226,7 +130,7 @@ $(TargetPath) ..\..\pngtest.png $(IntDir)\pngout.png"
 				Name="VCLinkerTool"
 				OutputFile="$(OutDir)/pngtest.exe"
 				LinkIncremental="1"
-				IgnoreDefaultLibraryNames="$(IntDir)\libpng14vb.lib"
+				IgnoreDefaultLibraryNames="$(IntDir)\libpng14b.lib"
 				SubSystem="1"
 				TargetMachine="1"/>
 			<Tool
@@ -259,7 +163,7 @@ $(TargetPath) ..\..\pngtest.png $(IntDir)\pngout.png"
 				Name="VCCLCompilerTool"
 				InlineFunctionExpansion="1"
 				AdditionalIncludeDirectories="..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;_DEBUG;PNG_NO_GLOBAL_ARRAYS"
+				PreprocessorDefinitions="WIN32;_DEBUG;_CRT_SECURE_NO_WARNINGS"
 				StringPooling="TRUE"
 				RuntimeLibrary="2"
 				EnableFunctionLevelLinking="TRUE"
@@ -307,103 +211,7 @@ $(TargetPath) ..\..\pngtest.png $(IntDir)\pngout.png"
 				Name="VCCLCompilerTool"
 				Optimization="0"
 				AdditionalIncludeDirectories="..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;_DEBUG;PNG_NO_GLOBAL_ARRAYS"
-				BasicRuntimeChecks="3"
-				RuntimeLibrary="3"
-				WarningLevel="3"
-				DebugInformationFormat="4"
-				CompileAs="0"/>
-			<Tool
-				Name="VCCustomBuildTool"
-				Description="Testing..."
-				CommandLine="set path=$(OutDir)\..;$(OutDir)\..\ZLib
-$(TargetPath) ..\..\pngtest.png $(IntDir)\pngout.png"
-				Outputs="$(IntDir)\pngout.png"/>
-			<Tool
-				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/pngtest.exe"
-				GenerateDebugInformation="TRUE"
-				SubSystem="1"
-				TargetMachine="1"/>
-			<Tool
-				Name="VCMIDLTool"/>
-			<Tool
-				Name="VCPostBuildEventTool"/>
-			<Tool
-				Name="VCPreBuildEventTool"/>
-			<Tool
-				Name="VCPreLinkEventTool"/>
-			<Tool
-				Name="VCResourceCompilerTool"/>
-			<Tool
-				Name="VCWebServiceProxyGeneratorTool"/>
-			<Tool
-				Name="VCXMLDataGeneratorTool"/>
-			<Tool
-				Name="VCWebDeploymentTool"/>
-			<Tool
-				Name="VCManagedWrapperGeneratorTool"/>
-			<Tool
-				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
-		</Configuration>
-		<Configuration
-			Name="LIB ASM Release|Win32"
-			OutputDirectory=".\Win32_LIB_ASM_Release\Test"
-			IntermediateDirectory=".\Win32_LIB_ASM_Release\Test"
-			ConfigurationType="1">
-			<Tool
-				Name="VCCLCompilerTool"
-				InlineFunctionExpansion="1"
-				AdditionalIncludeDirectories="..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;NDEBUG;PNG_NO_GLOBAL_ARRAYS"
-				StringPooling="TRUE"
-				RuntimeLibrary="2"
-				EnableFunctionLevelLinking="TRUE"
-				WarningLevel="3"
-				CompileAs="0"/>
-			<Tool
-				Name="VCCustomBuildTool"
-				Description="Testing..."
-				CommandLine="set path=$(OutDir)\..;$(OutDir)\..\ZLib
-$(TargetPath) ..\..\pngtest.png $(IntDir)\pngout.png"
-				Outputs="$(IntDir)\pngout.png"/>
-			<Tool
-				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/pngtest.exe"
-				LinkIncremental="1"
-				SubSystem="1"
-				TargetMachine="1"/>
-			<Tool
-				Name="VCMIDLTool"/>
-			<Tool
-				Name="VCPostBuildEventTool"/>
-			<Tool
-				Name="VCPreBuildEventTool"/>
-			<Tool
-				Name="VCPreLinkEventTool"/>
-			<Tool
-				Name="VCResourceCompilerTool"/>
-			<Tool
-				Name="VCWebServiceProxyGeneratorTool"/>
-			<Tool
-				Name="VCXMLDataGeneratorTool"/>
-			<Tool
-				Name="VCWebDeploymentTool"/>
-			<Tool
-				Name="VCManagedWrapperGeneratorTool"/>
-			<Tool
-				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
-		</Configuration>
-		<Configuration
-			Name="LIB ASM Debug|Win32"
-			OutputDirectory=".\Win32_LIB_ASM_Debug\Test"
-			IntermediateDirectory=".\Win32_LIB_ASM_Debug\Test"
-			ConfigurationType="1">
-			<Tool
-				Name="VCCLCompilerTool"
-				Optimization="0"
-				AdditionalIncludeDirectories="..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;_DEBUG;PNG_NO_GLOBAL_ARRAYS"
+				PreprocessorDefinitions="WIN32;_DEBUG;_CRT_SECURE_NO_WARNINGS"
 				BasicRuntimeChecks="3"
 				RuntimeLibrary="3"
 				WarningLevel="3"
--- a/projects/visualc71/zlib.vcproj
+++ b/projects/visualc71/zlib.vcproj
@@ -17,7 +17,7 @@
 				Name="VCCLCompilerTool"
 				InlineFunctionExpansion="1"
 				AdditionalIncludeDirectories="..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;NDEBUG"
+				PreprocessorDefinitions="WIN32;NDEBUG;_CRT_SECURE_NO_WARNINGS"
 				StringPooling="TRUE"
 				RuntimeLibrary="2"
 				EnableFunctionLevelLinking="TRUE"
@@ -62,97 +62,7 @@
 				Name="VCCLCompilerTool"
 				Optimization="0"
 				AdditionalIncludeDirectories="..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;_DEBUG"
-				BasicRuntimeChecks="3"
-				RuntimeLibrary="3"
-				WarningLevel="3"
-				DebugInformationFormat="4"
-				CompileAs="1"/>
-			<Tool
-				Name="VCCustomBuildTool"/>
-			<Tool
-				Name="VCLinkerTool"
-				OutputFile="$(OutDir)\zlib1d.dll"
-				ModuleDefinitionFile="..\..\..\zlib\win32\zlib.def"
-				GenerateDebugInformation="TRUE"/>
-			<Tool
-				Name="VCMIDLTool"/>
-			<Tool
-				Name="VCPostBuildEventTool"/>
-			<Tool
-				Name="VCPreBuildEventTool"/>
-			<Tool
-				Name="VCPreLinkEventTool"/>
-			<Tool
-				Name="VCResourceCompilerTool"
-				PreprocessorDefinitions="_DEBUG"
-				Culture="1033"/>
-			<Tool
-				Name="VCWebServiceProxyGeneratorTool"/>
-			<Tool
-				Name="VCXMLDataGeneratorTool"/>
-			<Tool
-				Name="VCWebDeploymentTool"/>
-			<Tool
-				Name="VCManagedWrapperGeneratorTool"/>
-			<Tool
-				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
-		</Configuration>
-		<Configuration
-			Name="DLL ASM Release|Win32"
-			OutputDirectory=".\Win32_DLL_ASM_Release\ZLib"
-			IntermediateDirectory=".\Win32_DLL_ASM_Release\ZLib"
-			ConfigurationType="2">
-			<Tool
-				Name="VCCLCompilerTool"
-				InlineFunctionExpansion="1"
-				AdditionalIncludeDirectories="..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;NDEBUG;ASMV;ASMINF"
-				StringPooling="TRUE"
-				RuntimeLibrary="2"
-				EnableFunctionLevelLinking="TRUE"
-				WarningLevel="3"
-				CompileAs="1"/>
-			<Tool
-				Name="VCCustomBuildTool"/>
-			<Tool
-				Name="VCLinkerTool"
-				OutputFile="$(OutDir)\zlib1.dll"
-				LinkIncremental="1"
-				ModuleDefinitionFile="..\..\..\zlib\win32\zlib.def"/>
-			<Tool
-				Name="VCMIDLTool"/>
-			<Tool
-				Name="VCPostBuildEventTool"/>
-			<Tool
-				Name="VCPreBuildEventTool"/>
-			<Tool
-				Name="VCPreLinkEventTool"/>
-			<Tool
-				Name="VCResourceCompilerTool"
-				PreprocessorDefinitions="NDEBUG"
-				Culture="1033"/>
-			<Tool
-				Name="VCWebServiceProxyGeneratorTool"/>
-			<Tool
-				Name="VCXMLDataGeneratorTool"/>
-			<Tool
-				Name="VCWebDeploymentTool"/>
-			<Tool
-				Name="VCManagedWrapperGeneratorTool"/>
-			<Tool
-				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
-		</Configuration>
-		<Configuration
-			Name="DLL ASM Debug|Win32"
-			OutputDirectory=".\Win32_DLL_ASM_Debug\ZLib"
-			IntermediateDirectory=".\Win32_DLL_ASM_Debug\ZLib"
-			ConfigurationType="2">
-			<Tool
-				Name="VCCLCompilerTool"
-				Optimization="0"
-				AdditionalIncludeDirectories="..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;_DEBUG;ASMV;ASMINF"
+				PreprocessorDefinitions="WIN32;_DEBUG;_CRT_SECURE_NO_WARNINGS"
 				BasicRuntimeChecks="3"
 				RuntimeLibrary="3"
 				WarningLevel="3"
@@ -197,7 +107,7 @@
 				Name="VCCLCompilerTool"
 				InlineFunctionExpansion="1"
 				AdditionalIncludeDirectories="..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;NDEBUG"
+				PreprocessorDefinitions="WIN32;NDEBUG;_CRT_SECURE_NO_WARNINGS"
 				StringPooling="TRUE"
 				RuntimeLibrary="2"
 				EnableFunctionLevelLinking="TRUE"
@@ -236,85 +146,7 @@
 				Name="VCCLCompilerTool"
 				Optimization="0"
 				AdditionalIncludeDirectories="..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;_DEBUG"
-				BasicRuntimeChecks="3"
-				RuntimeLibrary="3"
-				WarningLevel="3"
-				DebugInformationFormat="4"
-				CompileAs="1"/>
-			<Tool
-				Name="VCCustomBuildTool"/>
-			<Tool
-				Name="VCLibrarianTool"
-				OutputFile="$(OutDir)\zlibd.lib"/>
-			<Tool
-				Name="VCMIDLTool"/>
-			<Tool
-				Name="VCPostBuildEventTool"/>
-			<Tool
-				Name="VCPreBuildEventTool"/>
-			<Tool
-				Name="VCPreLinkEventTool"/>
-			<Tool
-				Name="VCResourceCompilerTool"/>
-			<Tool
-				Name="VCWebServiceProxyGeneratorTool"/>
-			<Tool
-				Name="VCXMLDataGeneratorTool"/>
-			<Tool
-				Name="VCManagedWrapperGeneratorTool"/>
-			<Tool
-				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
-		</Configuration>
-		<Configuration
-			Name="LIB ASM Release|Win32"
-			OutputDirectory=".\Win32_LIB_ASM_Release\ZLib"
-			IntermediateDirectory=".\Win32_LIB_ASM_Release\ZLib"
-			ConfigurationType="4">
-			<Tool
-				Name="VCCLCompilerTool"
-				InlineFunctionExpansion="1"
-				AdditionalIncludeDirectories="..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;NDEBUG;ASMV;ASMINF"
-				StringPooling="TRUE"
-				RuntimeLibrary="2"
-				EnableFunctionLevelLinking="TRUE"
-				WarningLevel="3"
-				CompileAs="1"/>
-			<Tool
-				Name="VCCustomBuildTool"/>
-			<Tool
-				Name="VCLibrarianTool"
-				OutputFile="$(OutDir)\zlib.lib"/>
-			<Tool
-				Name="VCMIDLTool"/>
-			<Tool
-				Name="VCPostBuildEventTool"/>
-			<Tool
-				Name="VCPreBuildEventTool"/>
-			<Tool
-				Name="VCPreLinkEventTool"/>
-			<Tool
-				Name="VCResourceCompilerTool"/>
-			<Tool
-				Name="VCWebServiceProxyGeneratorTool"/>
-			<Tool
-				Name="VCXMLDataGeneratorTool"/>
-			<Tool
-				Name="VCManagedWrapperGeneratorTool"/>
-			<Tool
-				Name="VCAuxiliaryManagedWrapperGeneratorTool"/>
-		</Configuration>
-		<Configuration
-			Name="LIB ASM Debug|Win32"
-			OutputDirectory=".\Win32_LIB_ASM_Debug\ZLib"
-			IntermediateDirectory=".\Win32_LIB_ASM_Debug\ZLib"
-			ConfigurationType="4">
-			<Tool
-				Name="VCCLCompilerTool"
-				Optimization="0"
-				AdditionalIncludeDirectories="..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;_DEBUG;ASMV;ASMINF"
+				PreprocessorDefinitions="WIN32;_DEBUG;_CRT_SECURE_NO_WARNINGS"
 				BasicRuntimeChecks="3"
 				RuntimeLibrary="3"
 				WarningLevel="3"
@@ -398,18 +230,6 @@
 					<Tool
 						Name="VCCustomBuildTool"/>
 				</FileConfiguration>
-				<FileConfiguration
-					Name="LIB ASM Release|Win32"
-					ExcludedFromBuild="TRUE">
-					<Tool
-						Name="VCCustomBuildTool"/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="LIB ASM Debug|Win32"
-					ExcludedFromBuild="TRUE">
-					<Tool
-						Name="VCCustomBuildTool"/>
-				</FileConfiguration>
 			</File>
 			<File
 				RelativePath="..\..\..\zlib\zutil.c">
@@ -466,18 +286,6 @@
 					<Tool
 						Name="VCResourceCompilerTool"/>
 				</FileConfiguration>
-				<FileConfiguration
-					Name="LIB ASM Release|Win32"
-					ExcludedFromBuild="TRUE">
-					<Tool
-						Name="VCResourceCompilerTool"/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="LIB ASM Debug|Win32"
-					ExcludedFromBuild="TRUE">
-					<Tool
-						Name="VCResourceCompilerTool"/>
-				</FileConfiguration>
 			</File>
 		</Filter>
 		<Filter
@@ -497,24 +305,6 @@
 					<Tool
 						Name="VCCustomBuildTool"/>
 				</FileConfiguration>
-				<FileConfiguration
-					Name="DLL ASM Release|Win32">
-					<Tool
-						Name="VCCustomBuildTool"
-						Description="Assembling..."
-						CommandLine="ml /nologo /c /Cx /coff /Fo&quot;$(IntDir)\$(InputName).obj&quot; &quot;$(InputPath)&quot;
-"
-						Outputs="$(IntDir)\$(InputName).obj"/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="DLL ASM Debug|Win32">
-					<Tool
-						Name="VCCustomBuildTool"
-						Description="Assembling..."
-						CommandLine="ml /nologo /c /Cx /coff /Zi /Fo&quot;$(IntDir)\$(InputName).obj&quot; &quot;$(InputPath)&quot;
-"
-						Outputs="$(IntDir)\$(InputName).obj"/>
-				</FileConfiguration>
 				<FileConfiguration
 					Name="LIB Release|Win32"
 					ExcludedFromBuild="TRUE">
@@ -527,24 +317,6 @@
 					<Tool
 						Name="VCCustomBuildTool"/>
 				</FileConfiguration>
-				<FileConfiguration
-					Name="LIB ASM Release|Win32">
-					<Tool
-						Name="VCCustomBuildTool"
-						Description="Assembling..."
-						CommandLine="ml /nologo /c /Cx /coff /Fo&quot;$(IntDir)\$(InputName).obj&quot; &quot;$(InputPath)&quot;
-"
-						Outputs="$(IntDir)\$(InputName).obj"/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="LIB ASM Debug|Win32">
-					<Tool
-						Name="VCCustomBuildTool"
-						Description="Assembling..."
-						CommandLine="ml /nologo /c /Cx /coff /Zi /Fo&quot;$(IntDir)\$(InputName).obj&quot; &quot;$(InputPath)&quot;
-"
-						Outputs="$(IntDir)\$(InputName).obj"/>
-				</FileConfiguration>
 			</File>
 			<File
 				RelativePath="..\..\..\zlib\contrib\masmx86\gvmat32c.c">
@@ -560,18 +332,6 @@
 					<Tool
 						Name="VCCLCompilerTool"/>
 				</FileConfiguration>
-				<FileConfiguration
-					Name="DLL ASM Release|Win32">
-					<Tool
-						Name="VCCLCompilerTool"
-						AdditionalIncludeDirectories="..\.."/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="DLL ASM Debug|Win32">
-					<Tool
-						Name="VCCLCompilerTool"
-						AdditionalIncludeDirectories="..\.."/>
-				</FileConfiguration>
 				<FileConfiguration
 					Name="LIB Release|Win32"
 					ExcludedFromBuild="TRUE">
@@ -584,18 +344,6 @@
 					<Tool
 						Name="VCCLCompilerTool"/>
 				</FileConfiguration>
-				<FileConfiguration
-					Name="LIB ASM Release|Win32">
-					<Tool
-						Name="VCCLCompilerTool"
-						AdditionalIncludeDirectories="..\.."/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="LIB ASM Debug|Win32">
-					<Tool
-						Name="VCCLCompilerTool"
-						AdditionalIncludeDirectories="..\.."/>
-				</FileConfiguration>
 			</File>
 			<File
 				RelativePath="..\..\..\zlib\contrib\masmx86\inffas32.asm">
@@ -611,24 +359,6 @@
 					<Tool
 						Name="VCCustomBuildTool"/>
 				</FileConfiguration>
-				<FileConfiguration
-					Name="DLL ASM Release|Win32">
-					<Tool
-						Name="VCCustomBuildTool"
-						Description="Assembling..."
-						CommandLine="ml /nologo /c /Cx /coff /Fo&quot;$(IntDir)\$(InputName).obj&quot; &quot;$(InputPath)&quot;
-"
-						Outputs="$(IntDir)\$(InputName).obj"/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="DLL ASM Debug|Win32">
-					<Tool
-						Name="VCCustomBuildTool"
-						Description="Assembling..."
-						CommandLine="ml /nologo /c /Cx /coff /Zi /Fo&quot;$(IntDir)\$(InputName).obj&quot; &quot;$(InputPath)&quot;
-"
-						Outputs="$(IntDir)\$(InputName).obj"/>
-				</FileConfiguration>
 				<FileConfiguration
 					Name="LIB Release|Win32"
 					ExcludedFromBuild="TRUE">
@@ -641,24 +371,6 @@
 					<Tool
 						Name="VCCustomBuildTool"/>
 				</FileConfiguration>
-				<FileConfiguration
-					Name="LIB ASM Release|Win32">
-					<Tool
-						Name="VCCustomBuildTool"
-						Description="Assembling..."
-						CommandLine="ml /nologo /c /Cx /coff /Fo&quot;$(IntDir)\$(InputName).obj&quot; &quot;$(InputPath)&quot;
-"
-						Outputs="$(IntDir)\$(InputName).obj"/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="LIB ASM Debug|Win32">
-					<Tool
-						Name="VCCustomBuildTool"
-						Description="Assembling..."
-						CommandLine="ml /nologo /c /Cx /coff /Zi /Fo&quot;$(IntDir)\$(InputName).obj&quot; &quot;$(InputPath)&quot;
-"
-						Outputs="$(IntDir)\$(InputName).obj"/>
-				</FileConfiguration>
 			</File>
 		</Filter>
 		<File
--- a/projects/xcode/Info.plist
+++ b/projects/xcode/Info.plist
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>English</string>
+	<key>CFBundleExecutable</key>
+	<string>libpng</string>
+	<key>CFBundleIconFile</key>
+	<string></string>
+	<key>CFBundleIdentifier</key>
+	<string>com.apple.carbonframeworktemplate</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundlePackageType</key>
+	<string>FMWK</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>1.0</string>
+        <key>CFBundleShortVersionString</key>
+        <string>1.0</string>
+	<key>CSResourcesFileMapped</key>
+	<true/>
+</dict>
+</plist>
--- a/projects/xcode/README.txt
+++ b/projects/xcode/README.txt
@@ -0,0 +1,9 @@
+The xcode project has not been entirely updated to libpng-1.4.0.
+
+It needs to *not* depend on pnggccrd.c or pngvcrd.c
+
+It needs to PNG_CONFIGURE_LIBPNG in the CFLAGS while building
+the library, but not while building an application.
+
+If an updated version is not received, this project will
+be removed when libpng-1.4.0 is released.
--- a/projects/xcode/libpng.xcodeproj/.gitignore
+++ b/projects/xcode/libpng.xcodeproj/.gitignore
@@ -0,0 +1,2 @@
+*.mode1*
+*.pbxuser
--- a/projects/xcode/libpng.xcodeproj/project.pbxproj
+++ b/projects/xcode/libpng.xcodeproj/project.pbxproj
@@ -0,0 +1,353 @@
+// !$*UTF8*$!
+{
+	archiveVersion = 1;
+	classes = {
+	};
+	objectVersion = 44;
+	objects = {
+
+/* Begin PBXBuildFile section */
+		14461C7109C3C37F005840C0 /* png.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C5D09C3C37F005840C0 /* png.c */; };
+		14461C7209C3C37F005840C0 /* png.h in Headers */ = {isa = PBXBuildFile; fileRef = 14461C5E09C3C37F005840C0 /* png.h */; settings = {ATTRIBUTES = (Public, ); }; };
+		14461C7309C3C37F005840C0 /* pngconf.h in Headers */ = {isa = PBXBuildFile; fileRef = 14461C5F09C3C37F005840C0 /* pngconf.h */; settings = {ATTRIBUTES = (Public, ); }; };
+		14461C7409C3C37F005840C0 /* pngerror.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6009C3C37F005840C0 /* pngerror.c */; };
+		14461C7509C3C37F005840C0 /* pnggccrd.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6109C3C37F005840C0 /* pnggccrd.c */; };
+		14461C7609C3C37F005840C0 /* pngget.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6209C3C37F005840C0 /* pngget.c */; };
+		14461C7709C3C37F005840C0 /* pngmem.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6309C3C37F005840C0 /* pngmem.c */; };
+		14461C7809C3C37F005840C0 /* pngpread.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6409C3C37F005840C0 /* pngpread.c */; };
+		14461C7909C3C37F005840C0 /* pngread.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6509C3C37F005840C0 /* pngread.c */; };
+		14461C7A09C3C37F005840C0 /* pngrio.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6609C3C37F005840C0 /* pngrio.c */; };
+		14461C7B09C3C37F005840C0 /* pngrtran.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6709C3C37F005840C0 /* pngrtran.c */; };
+		14461C7C09C3C37F005840C0 /* pngrutil.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6809C3C37F005840C0 /* pngrutil.c */; };
+		14461C7D09C3C37F005840C0 /* pngset.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6909C3C37F005840C0 /* pngset.c */; };
+		14461C7F09C3C37F005840C0 /* pngtrans.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6B09C3C37F005840C0 /* pngtrans.c */; };
+		14461C8009C3C37F005840C0 /* pngvcrd.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6C09C3C37F005840C0 /* pngvcrd.c */; };
+		14461C8109C3C37F005840C0 /* pngwio.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6D09C3C37F005840C0 /* pngwio.c */; };
+		14461C8209C3C37F005840C0 /* pngwrite.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6E09C3C37F005840C0 /* pngwrite.c */; };
+		14461C8309C3C37F005840C0 /* pngwtran.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6F09C3C37F005840C0 /* pngwtran.c */; };
+		14461C8409C3C37F005840C0 /* pngwutil.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C7009C3C37F005840C0 /* pngwutil.c */; };
+		67FA470510693F6B0078FB9E /* pngpriv.h in Headers */ = {isa = PBXBuildFile; fileRef = 67FA470410693F6B0078FB9E /* pngpriv.h */; };
+/* End PBXBuildFile section */
+
+/* Begin PBXFileReference section */
+		14461C5D09C3C37F005840C0 /* png.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = png.c; path = ../../png.c; sourceTree = SOURCE_ROOT; };
+		14461C5E09C3C37F005840C0 /* png.h */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.h; name = png.h; path = ../../png.h; sourceTree = SOURCE_ROOT; };
+		14461C5F09C3C37F005840C0 /* pngconf.h */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.h; name = pngconf.h; path = ../../pngconf.h; sourceTree = SOURCE_ROOT; };
+		14461C6009C3C37F005840C0 /* pngerror.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngerror.c; path = ../../pngerror.c; sourceTree = SOURCE_ROOT; };
+		14461C6109C3C37F005840C0 /* pnggccrd.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pnggccrd.c; path = ../../pnggccrd.c; sourceTree = SOURCE_ROOT; };
+		14461C6209C3C37F005840C0 /* pngget.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngget.c; path = ../../pngget.c; sourceTree = SOURCE_ROOT; };
+		14461C6309C3C37F005840C0 /* pngmem.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngmem.c; path = ../../pngmem.c; sourceTree = SOURCE_ROOT; };
+		14461C6409C3C37F005840C0 /* pngpread.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngpread.c; path = ../../pngpread.c; sourceTree = SOURCE_ROOT; };
+		14461C6509C3C37F005840C0 /* pngread.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngread.c; path = ../../pngread.c; sourceTree = SOURCE_ROOT; };
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+		14461C6809C3C37F005840C0 /* pngrutil.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngrutil.c; path = ../../pngrutil.c; sourceTree = SOURCE_ROOT; };
+		14461C6909C3C37F005840C0 /* pngset.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngset.c; path = ../../pngset.c; sourceTree = SOURCE_ROOT; };
+		14461C6B09C3C37F005840C0 /* pngtrans.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngtrans.c; path = ../../pngtrans.c; sourceTree = SOURCE_ROOT; };
+		14461C6C09C3C37F005840C0 /* pngvcrd.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngvcrd.c; path = ../../pngvcrd.c; sourceTree = SOURCE_ROOT; };
+		14461C6D09C3C37F005840C0 /* pngwio.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngwio.c; path = ../../pngwio.c; sourceTree = SOURCE_ROOT; };
+		14461C6E09C3C37F005840C0 /* pngwrite.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngwrite.c; path = ../../pngwrite.c; sourceTree = SOURCE_ROOT; };
+		14461C6F09C3C37F005840C0 /* pngwtran.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngwtran.c; path = ../../pngwtran.c; sourceTree = SOURCE_ROOT; };
+		14461C7009C3C37F005840C0 /* pngwutil.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngwutil.c; path = ../../pngwutil.c; sourceTree = SOURCE_ROOT; };
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+		8D07F2C70486CC7A007CD1D0 /* Info.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist; path = Info.plist; sourceTree = "<group>"; };
+		8D07F2C80486CC7A007CD1D0 /* libpng.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = libpng.framework; sourceTree = BUILT_PRODUCTS_DIR; };
+/* End PBXFileReference section */
+
+/* Begin PBXFrameworksBuildPhase section */
+		8D07F2C30486CC7A007CD1D0 /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXFrameworksBuildPhase section */
+
+/* Begin PBXGroup section */
+		034768DDFF38A45A11DB9C8B /* Products */ = {
+			isa = PBXGroup;
+			children = (
+				8D07F2C80486CC7A007CD1D0 /* libpng.framework */,
+			);
+			name = Products;
+			sourceTree = "<group>";
+		};
+		0867D691FE84028FC02AAC07 /* libpng */ = {
+			isa = PBXGroup;
+			children = (
+				08FB77ACFE841707C02AAC07 /* Source */,
+				089C1665FE841158C02AAC07 /* Resources */,
+				034768DDFF38A45A11DB9C8B /* Products */,
+			);
+			name = libpng;
+			sourceTree = "<group>";
+		};
+		089C1665FE841158C02AAC07 /* Resources */ = {
+			isa = PBXGroup;
+			children = (
+				8D07F2C70486CC7A007CD1D0 /* Info.plist */,
+			);
+			name = Resources;
+			sourceTree = "<group>";
+		};
+		08FB77ACFE841707C02AAC07 /* Source */ = {
+			isa = PBXGroup;
+			children = (
+				67FA470410693F6B0078FB9E /* pngpriv.h */,
+				14461C5D09C3C37F005840C0 /* png.c */,
+				14461C5E09C3C37F005840C0 /* png.h */,
+				14461C5F09C3C37F005840C0 /* pngconf.h */,
+				14461C6009C3C37F005840C0 /* pngerror.c */,
+				14461C6109C3C37F005840C0 /* pnggccrd.c */,
+				14461C6209C3C37F005840C0 /* pngget.c */,
+				14461C6309C3C37F005840C0 /* pngmem.c */,
+				14461C6409C3C37F005840C0 /* pngpread.c */,
+				14461C6509C3C37F005840C0 /* pngread.c */,
+				14461C6609C3C37F005840C0 /* pngrio.c */,
+				14461C6709C3C37F005840C0 /* pngrtran.c */,
+				14461C6809C3C37F005840C0 /* pngrutil.c */,
+				14461C6909C3C37F005840C0 /* pngset.c */,
+				14461C6B09C3C37F005840C0 /* pngtrans.c */,
+				14461C6C09C3C37F005840C0 /* pngvcrd.c */,
+				14461C6D09C3C37F005840C0 /* pngwio.c */,
+				14461C6E09C3C37F005840C0 /* pngwrite.c */,
+				14461C6F09C3C37F005840C0 /* pngwtran.c */,
+				14461C7009C3C37F005840C0 /* pngwutil.c */,
+			);
+			name = Source;
+			sourceTree = "<group>";
+		};
+/* End PBXGroup section */
+
+/* Begin PBXHeadersBuildPhase section */
+		8D07F2BD0486CC7A007CD1D0 /* Headers */ = {
+			isa = PBXHeadersBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				14461C7209C3C37F005840C0 /* png.h in Headers */,
+				14461C7309C3C37F005840C0 /* pngconf.h in Headers */,
+				67FA470510693F6B0078FB9E /* pngpriv.h in Headers */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXHeadersBuildPhase section */
+
+/* Begin PBXNativeTarget section */
+		8D07F2BC0486CC7A007CD1D0 /* libpng */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = 4FADC24208B4156D00ABE55E /* Build configuration list for PBXNativeTarget "libpng" */;
+			buildPhases = (
+				8D07F2BD0486CC7A007CD1D0 /* Headers */,
+				8D07F2BF0486CC7A007CD1D0 /* Resources */,
+				8D07F2C10486CC7A007CD1D0 /* Sources */,
+				8D07F2C30486CC7A007CD1D0 /* Frameworks */,
+				8D07F2C50486CC7A007CD1D0 /* Rez */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+			);
+			name = libpng;
+			productInstallPath = "$(HOME)/Library/Frameworks";
+			productName = libpng;
+			productReference = 8D07F2C80486CC7A007CD1D0 /* libpng.framework */;
+			productType = "com.apple.product-type.framework";
+		};
+/* End PBXNativeTarget section */
+
+/* Begin PBXProject section */
+		0867D690FE84028FC02AAC07 /* Project object */ = {
+			isa = PBXProject;
+			buildConfigurationList = 4FADC24608B4156D00ABE55E /* Build configuration list for PBXProject "libpng" */;
+			compatibilityVersion = "Xcode 2.4";
+			hasScannedForEncodings = 1;
+			mainGroup = 0867D691FE84028FC02AAC07 /* libpng */;
+			productRefGroup = 034768DDFF38A45A11DB9C8B /* Products */;
+			projectDirPath = "";
+			projectRoot = ../..;
+			targets = (
+				8D07F2BC0486CC7A007CD1D0 /* libpng */,
+			);
+		};
+/* End PBXProject section */
+
+/* Begin PBXResourcesBuildPhase section */
+		8D07F2BF0486CC7A007CD1D0 /* Resources */ = {
+			isa = PBXResourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXResourcesBuildPhase section */
+
+/* Begin PBXRezBuildPhase section */
+		8D07F2C50486CC7A007CD1D0 /* Rez */ = {
+			isa = PBXRezBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXRezBuildPhase section */
+
+/* Begin PBXSourcesBuildPhase section */
+		8D07F2C10486CC7A007CD1D0 /* Sources */ = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				14461C7109C3C37F005840C0 /* png.c in Sources */,
+				14461C7409C3C37F005840C0 /* pngerror.c in Sources */,
+				14461C7509C3C37F005840C0 /* pnggccrd.c in Sources */,
+				14461C7609C3C37F005840C0 /* pngget.c in Sources */,
+				14461C7709C3C37F005840C0 /* pngmem.c in Sources */,
+				14461C7809C3C37F005840C0 /* pngpread.c in Sources */,
+				14461C7909C3C37F005840C0 /* pngread.c in Sources */,
+				14461C7A09C3C37F005840C0 /* pngrio.c in Sources */,
+				14461C7B09C3C37F005840C0 /* pngrtran.c in Sources */,
+				14461C7C09C3C37F005840C0 /* pngrutil.c in Sources */,
+				14461C7D09C3C37F005840C0 /* pngset.c in Sources */,
+				14461C7F09C3C37F005840C0 /* pngtrans.c in Sources */,
+				14461C8009C3C37F005840C0 /* pngvcrd.c in Sources */,
+				14461C8109C3C37F005840C0 /* pngwio.c in Sources */,
+				14461C8209C3C37F005840C0 /* pngwrite.c in Sources */,
+				14461C8309C3C37F005840C0 /* pngwtran.c in Sources */,
+				14461C8409C3C37F005840C0 /* pngwutil.c in Sources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXSourcesBuildPhase section */
+
+/* Begin XCBuildConfiguration section */
+		4FADC24308B4156D00ABE55E /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				COPY_PHASE_STRIP = NO;
+				DYLIB_COMPATIBILITY_VERSION = 14;
+				DYLIB_CURRENT_VERSION = 14;
+				FRAMEWORK_VERSION = 1.4.0beta104;
+				GCC_PRECOMPILE_PREFIX_HEADER = NO;
+				GCC_PREFIX_HEADER = "";
+				INFOPLIST_FILE = Info.plist;
+				INSTALL_PATH = "@executable_path/../Frameworks";
+				LIBRARY_STYLE = DYNAMIC;
+				MACH_O_TYPE = mh_dylib;
+				OTHER_LDFLAGS = "-lz";
+				PRODUCT_NAME = libpng;
+				WRAPPER_EXTENSION = framework;
+			};
+			name = Debug;
+		};
+		4FADC24408B4156D00ABE55E /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				DYLIB_COMPATIBILITY_VERSION = 14;
+				DYLIB_CURRENT_VERSION = 14;
+				FRAMEWORK_VERSION = 1.4.0beta104;
+				GCC_PRECOMPILE_PREFIX_HEADER = NO;
+				GCC_PREFIX_HEADER = "";
+				INFOPLIST_FILE = Info.plist;
+				INSTALL_PATH = "@executable_path/../Frameworks";
+				LIBRARY_STYLE = DYNAMIC;
+				MACH_O_TYPE = mh_dylib;
+				OTHER_LDFLAGS = "-lz";
+				PRODUCT_NAME = libpng;
+				WRAPPER_EXTENSION = framework;
+			};
+			name = Release;
+		};
+		4FADC24708B4156D00ABE55E /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ARCHS = (
+					i386,
+					ppc,
+					ppc64,
+					x86_64,
+				);
+				DEPLOYMENT_POSTPROCESSING = YES;
+				GCC_ENABLE_CPP_EXCEPTIONS = NO;
+				GCC_ENABLE_CPP_RTTI = NO;
+				GCC_ENABLE_FIX_AND_CONTINUE = YES;
+				GCC_GENERATE_DEBUGGING_SYMBOLS = YES;
+				GCC_OPTIMIZATION_LEVEL = 0;
+				GCC_TREAT_IMPLICIT_FUNCTION_DECLARATIONS_AS_ERRORS = YES;
+				GCC_VERSION_i386 = 4.0;
+				GCC_VERSION_ppc = 3.3;
+				GCC_WARN_ABOUT_RETURN_TYPE = YES;
+				GCC_WARN_UNUSED_VARIABLE = YES;
+				MACOSX_DEPLOYMENT_TARGET = 10.5;
+				"MACOSX_DEPLOYMENT_TARGET[arch=i386]" = 10.4;
+				"MACOSX_DEPLOYMENT_TARGET[arch=ppc]" = 10.2;
+				MACOSX_DEPLOYMENT_TARGET_i386 = 10.4;
+				MACOSX_DEPLOYMENT_TARGET_ppc = 10.2;
+				PREBINDING = NO;
+				SDKROOT = "$(DEVELOPER_SDK_DIR)/MacOSX10.5.sdk";
+				"SDKROOT[arch=i386]" = "$(DEVELOPER_SDK_DIR)/MacOSX10.4u.sdk";
+				"SDKROOT[arch=ppc]" = "$(DEVELOPER_SDK_DIR)/MacOSX10.3.9.sdk";
+				SDKROOT_i386 = "$(DEVELOPER_SDK_DIR)/MacOSX10.4u.sdk";
+				SDKROOT_ppc = "$(DEVELOPER_SDK_DIR)/MacOSX10.3.9.sdk";
+				ZERO_LINK = NO;
+			};
+			name = Debug;
+		};
+		4FADC24808B4156D00ABE55E /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ARCHS = (
+					i386,
+					ppc,
+					ppc64,
+					x86_64,
+				);
+				GCC_ENABLE_CPP_EXCEPTIONS = NO;
+				GCC_ENABLE_CPP_RTTI = NO;
+				GCC_ENABLE_FIX_AND_CONTINUE = NO;
+				GCC_GENERATE_DEBUGGING_SYMBOLS = NO;
+				GCC_OPTIMIZATION_LEVEL = 2;
+				GCC_TREAT_IMPLICIT_FUNCTION_DECLARATIONS_AS_ERRORS = YES;
+				GCC_VERSION_i386 = 4.0;
+				GCC_VERSION_ppc = 3.3;
+				GCC_WARN_ABOUT_RETURN_TYPE = YES;
+				GCC_WARN_UNUSED_VARIABLE = YES;
+				MACOSX_DEPLOYMENT_TARGET = 10.5;
+				"MACOSX_DEPLOYMENT_TARGET[arch=i386]" = 10.4;
+				"MACOSX_DEPLOYMENT_TARGET[arch=ppc]" = 10.2;
+				MACOSX_DEPLOYMENT_TARGET_i386 = 10.4;
+				MACOSX_DEPLOYMENT_TARGET_ppc = 10.2;
+				PREBINDING = NO;
+				SDKROOT = "$(DEVELOPER_SDK_DIR)/MacOSX10.5.sdk";
+				"SDKROOT[arch=i386]" = "$(DEVELOPER_SDK_DIR)/MacOSX10.4u.sdk";
+				"SDKROOT[arch=ppc]" = "$(DEVELOPER_SDK_DIR)/MacOSX10.3.9.sdk";
+				SDKROOT_i386 = "$(DEVELOPER_SDK_DIR)/MacOSX10.4u.sdk";
+				SDKROOT_ppc = "$(DEVELOPER_SDK_DIR)/MacOSX10.3.9.sdk";
+				ZERO_LINK = NO;
+			};
+			name = Release;
+		};
+/* End XCBuildConfiguration section */
+
+/* Begin XCConfigurationList section */
+		4FADC24208B4156D00ABE55E /* Build configuration list for PBXNativeTarget "libpng" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				4FADC24308B4156D00ABE55E /* Debug */,
+				4FADC24408B4156D00ABE55E /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		4FADC24608B4156D00ABE55E /* Build configuration list for PBXProject "libpng" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				4FADC24708B4156D00ABE55E /* Debug */,
+				4FADC24808B4156D00ABE55E /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+/* End XCConfigurationList section */
+	};
+	rootObject = 0867D690FE84028FC02AAC07 /* Project object */;
+}
--- a/scripts/README.txt
+++ b/scripts/README.txt
@@ -0,0 +1,67 @@
+
+Makefiles for  libpng version 1.4.0beta104 - November 22, 2009
+
+ makefile.linux    =>  Linux/ELF makefile
+                       (gcc, creates libpng14.so.14.1.4.0beta104)
+ makefile.gcc      =>  Generic makefile (gcc, creates static libpng.a)
+ makefile.knr      =>  Archaic UNIX Makefile that converts files with
+                       ansi2knr (Requires ansi2knr.c from
+                       ftp://ftp.cs.wisc.edu/ghost)
+ makefile.acorn    =>  Acorn makefile
+ makefile.aix      =>  AIX/gcc makefile
+ makefile.amiga    =>  Amiga makefile
+ makefile.atari    =>  Atari makefile
+ makefile.bc32     =>  32-bit Borland C++ (all modules compiled in C mode)
+ makefile.beos     =>  beos makefile
+ makefile.bor      =>  Borland makefile (uses bcc)
+ makefile.cegcc    =>  minge32ce for Windows CE makefile
+ makefile.cygwin   =>  Cygwin/gcc makefile
+ makefile.darwin   =>  Darwin makefile, can use on MacosX
+ makefile.dec      =>  DEC Alpha UNIX makefile
+ makefile.dj2      =>  DJGPP 2 makefile
+ makefile.elf      =>  Linux/ELF makefile symbol versioning,
+                       gcc, creates libpng14.so.14.1.4.0beta104)
+ makefile.freebsd  =>  FreeBSD makefile
+ makefile.gcc      =>  Generic gcc makefile
+ makefile.hpgcc    =>  HPUX makefile using gcc
+ makefile.hpux     =>  HPUX (10.20 and 11.00) makefile
+ makefile.hp64     =>  HPUX (10.20 and 11.00) makefile, 64-bit
+ makefile.ibmc     =>  IBM C/C++ version 3.x for Win32 and OS/2 (static)
+ makefile.intel    =>  Intel C/C++ version 4.0 and later
+ makefile.mingw    =>  Mingw makefile
+ makefile.mips     =>  MIPS makefile
+ makefile.msc      =>  Microsoft C makefile
+ makefile.netbsd   =>  NetBSD/cc makefile, makes libpng.so.
+ makefile.openbsd  =>  OpenBSD makefile
+ makefile.os2      =>  OS/2 Makefile (gcc and emx, requires pngos2.def)
+ makefile.sco      =>  For SCO OSr5  ELF and Unixware 7 with Native cc
+ makefile.sggcc    =>  Silicon Graphics (gcc,
+                       creates libpng14.so.14.1.4.0beta104)
+ makefile.sgi      =>  Silicon Graphics IRIX makefile (cc, creates static lib)
+ makefile.solaris  =>  Solaris 2.X makefile (gcc,
+                       creates libpng14.so.14.1.4.0beta104)
+ makefile.so9      =>  Solaris 9 makefile (gcc,
+                       creates libpng14.so.14.1.4.0beta104)
+ makefile.std      =>  Generic UNIX makefile (cc, creates static libpng.a)
+ makefile.sunos    =>  Sun makefile
+ makefile.32sunu   =>  Sun Ultra 32-bit makefile
+ makefile.64sunu   =>  Sun Ultra 64-bit makefile
+ makefile.tc3      =>  Turbo C 3.0 makefile
+ makefile.vcwin32  =>  makefile for Microsoft Visual C++ 4.0 and later
+ makefile.watcom   =>  Watcom 10a+ Makefile, 32-bit flat memory model
+ makevms.com       =>  VMS build script
+ smakefile.ppc     =>  AMIGA smakefile for SAS C V6.58/7.00 PPC compiler
+                       (Requires SCOPTIONS, copied from scripts/SCOPTIONS.ppc)
+
+Other supporting scripts:
+ descrip.mms       =>  VMS makefile for MMS or MMK
+ libpng-config-body.in => used by several makefiles to create libpng-config
+ libpng-config-head.in => used by several makefiles to create libpng-config
+ libpng.pc.in      =>  Used by several makefiles to create libpng.pc
+ pngos2.def        =>  OS/2 module definition file used by makefile.os2
+ pngwin.def        =>  Module definitions for makefile.cygwin and mingw
+ png32ce.def       =>  Module definition file used by makefile.cegcc
+ pngwin.rc         =>  Used by the visualc6 and visualc71 projects.
+ SCOPTIONS.ppc     =>  Used with smakefile.ppc
+
+Further information can be found in comments in the individual makefiles.
--- a/scripts/descrip.mms
+++ b/scripts/descrip.mms
@@ -49,4 +49,4 @@ pngwrite.obj : png.h, pngconf.h, pngpriv.h
 pngwtran.obj : png.h, pngconf.h, pngpriv.h
 pngwutil.obj : png.h, pngconf.h, pngpriv.h

-pngtest.obj : png.h, pngconf.h, pngpriv.h
+pngtest.obj : png.h, pngconf.h
--- a/scripts/libpng-config-head.in
+++ b/scripts/libpng-config-head.in
@@ -11,7 +11,7 @@

 # Modeled after libxml-config.

-version=1.4.0beta66
+version=1.4.0beta104
 prefix=""
 libdir=""
 libs=""
--- a/scripts/libpng.icc
+++ b/scripts/libpng.icc
@@ -1,47 +0,0 @@
-// Project file for libpng (static)
-// IBM VisualAge/C++ version 4.0 or later
-// Copyright (C) 2000 Cosmin Truta
-//
-// This code is released under the libpng license.
-// For conditions of distribution and use, see the disclaimer
-// and license in png.h
-//
-// Notes:
-//   All modules are compiled in C mode
-//   Tested with IBM VAC++ 4.0 under Win32
-//   Expected to work with IBM VAC++ 4.0 or later under OS/2 and Win32
-//   Can be easily adapted for IBM VAC++ 4.0 or later under AIX
-
-option incl(searchpath, "../zlib"), opt(level, "2"),
- link(libsearchpath, "../zlib")
-{
-   target type(lib) "libpng.lib"
-   {
-      source type(c) "png.c"
-      source type(c) "pngerror.c"
-      source type(c) "pngget.c"
-      source type(c) "pngmem.c"
-      source type(c) "pngpread.c"
-      source type(c) "pngread.c"
-      source type(c) "pngrio.c"
-      source type(c) "pngrtran.c"
-      source type(c) "pngrutil.c"
-      source type(c) "pngset.c"
-      source type(c) "pngtrans.c"
-      source type(c) "pngwio.c"
-      source type(c) "pngwrite.c"
-      source type(c) "pngwtran.c"
-      source type(c) "pngwutil.c"
-   }
-}
-
-option incl(searchpath, "../zlib"), opt(level, "2"),
- link(libsearchpath, "../zlib")
-{
-   target type(exe) "pngtest.exe"
-   {
-      source type(c) "pngtest.c"
-      source type(lib) "libpng.lib"
-      source type(lib) "zlib.lib"
-   }
-}
--- a/scripts/libpng.pc.in
+++ b/scripts/libpng.pc.in
@@ -5,6 +5,6 @@ includedir=@includedir@/libpng14

 Name: libpng
 Description: Loads and saves PNG files
-Version: 1.4.0beta66
+Version: 1.4.0beta104
 Libs: -L${libdir} -lpng14
 Cflags: -I${includedir}
--- a/scripts/makefile.32sunu
+++ b/scripts/makefile.32sunu
@@ -11,7 +11,7 @@
 # Library name:
 LIBNAME=libpng14
 PNGMAJ = 14
-PNGMIN = 1.4.0beta66
+PNGMIN = 1.4.0beta104
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
@@ -49,7 +49,7 @@ ZLIBINC=/usr/include
 WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
 	-Wmissing-declarations -Wtraditional -Wcast-align \
 	-Wstrict-prototypes -Wmissing-prototypes #-Wconversion
-CFLAGS=-I$(ZLIBINC) $(SUN_CC_FLAGS) \
+CFLAGS=-DPNG_CONFIGURE_LIBPNG -I$(ZLIBINC) $(SUN_CC_FLAGS) \
 	# $(WARNMORE) -g -DPNG_DEBUG=5
 LDFLAGS=$(SUN_LD_FLAGS) -L$(ZLIBLIB) -R$(ZLIBLIB) libpng.a -lz -lm

--- a/scripts/makefile.64sunu
+++ b/scripts/makefile.64sunu
@@ -11,7 +11,7 @@
 # Library name:
 LIBNAME=libpng14
 PNGMAJ = 14
-PNGMIN = 1.4.0beta66
+PNGMIN = 1.4.0beta104
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
@@ -49,7 +49,7 @@ ZLIBINC=/usr/include
 WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
 	-Wmissing-declarations -Wtraditional -Wcast-align \
 	-Wstrict-prototypes -Wmissing-prototypes #-Wconversion
-CFLAGS=-I$(ZLIBINC) $(SUN_CC_FLAGS) \
+CFLAGS=-DPNG_CONFIGURE_LIBPNG -I$(ZLIBINC) $(SUN_CC_FLAGS) \
 	# $(WARNMORE) -g -DPNG_DEBUG=5
 LDFLAGS=-L. -R. $(SUN_LD_FLAGS) -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng14 -lz -lm

--- a/scripts/makefile.acorn
+++ b/scripts/makefile.acorn
@@ -2,7 +2,7 @@


 # Toolflags:
-CCflags = -c -depend !Depend -IC:,Zlib: -g -throwback  -DRISCOS  -fnah
+CCflags = -DPNG_CONFIGURE_LIBPNG -c -depend !Depend -IC:,Zlib: -g -throwback  -DRISCOS  -fnah
 C++flags = -c -depend !Depend -IC: -throwback
 Linkflags = -aif -c++ -o $@
 ObjAsmflags = -throwback -NoCache -depend !Depend
--- a/scripts/makefile.aix
+++ b/scripts/makefile.aix
@@ -23,7 +23,7 @@ LN_SF = ln -f -s

 LIBNAME=libpng14
 PNGMAJ = 14
-PNGMIN = 1.4.0beta66
+PNGMIN = 1.4.0beta104
 PNGVER = $(PNGMAJ).$(PNGMIN)

 prefix=/usr/local
@@ -48,7 +48,7 @@ LDDEBUG =
 CRELEASE = -O2
 LDRELEASE = -s
 WARNMORE=-W -Wall
-CFLAGS = -I$(ZLIBINC) $(WARNMORE) $(CRELEASE)
+CFLAGS = -DPNG_CONFIGURE_LIBPNG -I$(ZLIBINC) $(WARNMORE) $(CRELEASE)
 LDFLAGS = -L. -L$(ZLIBLIB) -lpng14 -lz -lm $(LDRELEASE)

 # File extensions
@@ -113,4 +113,4 @@ pngwrite$(O): png.h pngconf.h pngpriv.h
 pngwtran$(O): png.h pngconf.h pngpriv.h
 pngwutil$(O): png.h pngconf.h pngpriv.h

-pngtest$(O):  png.h pngconf.h pngpriv.h
+pngtest$(O):  png.h pngconf.h
--- a/scripts/makefile.amiga
+++ b/scripts/makefile.amiga
@@ -15,7 +15,7 @@ CC=sc
 #compiler flags
 # WARNING: a bug in V6.51 causes bad code with OPTGO
 #          So use V6.55 or set NOOPTGO!!!!!!!!!
-CFLAGS= NOSTKCHK PARMS=REG OPTIMIZE OPTGO OPTPEEP OPTINLOCAL OPTINL\
+CFLAGS= -DPNG_CONFIGURE_LIBPNG NOSTKCHK PARMS=REG OPTIMIZE OPTGO OPTPEEP OPTINLOCAL OPTINL\
 	OPTLOOP OPTRDEP=4 OPTDEP=4 OPTCOMP=4 INCLUDEDIR=$(ZLIB) \
 	DEFINE=PNG_INTERNAL
 #linker flags
--- a/scripts/makefile.atari
+++ b/scripts/makefile.atari
@@ -6,10 +6,10 @@
 # For conditions of distribution and use, see the disclaimer
 # and license in png.h
 #
-# modified for LC56/ATARI assumes libz.lib is in same dir and uses default
+# Modified for LC56/ATARI assumes libz.lib is in same dir and uses default
 # rules for library management
 #
-CFLAGS=-I..\zlib -O
+CFLAGS=-DPNG_CONFIGURE_LIBPNG -I..\zlib -O
 LBR = png.lib
 LDFLAGS=-lpng -lz -lm

--- a/scripts/makefile.bc32
+++ b/scripts/makefile.bc32
@@ -43,7 +43,7 @@ LDEBUG=$(LDEBUG) -N
 # -d  merge duplicate strings
 # -k- turn off standard stack frame
 # -w  display all warnings
-CFLAGS=-I$(ZLIB_DIR) -O2 -d -k- -w $(TARGET_CPU) $(CDEBUG)
+CFLAGS=-DPNG_CONFIGURE_LIBPNG -I$(ZLIB_DIR) -O2 -d -k- -w $(TARGET_CPU) $(CDEBUG)

 # -M  generate map file
 LDFLAGS=-L$(ZLIB_DIR) -M $(LDEBUG)
@@ -124,7 +124,7 @@ pngwio.obj: pngwio.c png.h pngconf.h pngpriv.h
 pngwrite.obj: pngwrite.c png.h pngconf.h pngpriv.h
 pngwtran.obj: pngwtran.c png.h pngconf.h pngpriv.h
 pngwutil.obj: pngwutil.c png.h pngconf.h pngpriv.h
-pngtest.obj: pngtest.c png.h pngconf.h pngpriv.h
+pngtest.obj: pngtest.c png.h pngconf.h

 $(LIBNAME): $(OBJS)
 	-del $(LIBNAME)
--- a/scripts/makefile.beos
+++ b/scripts/makefile.beos
@@ -11,7 +11,7 @@
 # Library name:
 LIBNAME=libpng14
 PNGMAJ = 14
-PNGMIN = 1.4.0beta66
+PNGMIN = 1.4.0beta104
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # Shared library names:
@@ -44,7 +44,7 @@ WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \

 # On BeOS, -O1 is actually better than -O3.  This is a known bug but it's
 # still here in R4.5
-CFLAGS=-I$(ZLIBINC) -W -Wall -O1 -funroll-loops \
+CFLAGS=-DPNG_CONFIGURE_LIBPNG -I$(ZLIBINC) -W -Wall -O1 -funroll-loops \
 	$(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
 # LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng -lz
 LDFLAGS=-L. -Wl,-soname=$(LIBSOMAJ) -L$(ZLIBLIB) -lz
@@ -227,4 +227,4 @@ pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
 pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
 pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h

-pngtest.o: png.h pngconf.h pngpriv.h
+pngtest.o: png.h pngconf.h
--- a/Show More
+++ b/Show More