[libpng15] Imported from libpng-1.5.14rc01.tar

of png_set_unknown_chunks().

ANNOUNCE

@@ -1,5 +1,5 @@
 
-Libpng 1.5.6beta03 - September 28, 2011
+Libpng 1.5.14rc01 - January 17, 2013
 
 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.
@@ -9,52 +9,87 @@ Files available for download:
 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script
 
-   1.5.6beta03.tar.xz (LZMA-compressed, recommended)
-   1.5.6beta03.tar.gz
-   1.5.6beta03.tar.bz2
+   1.5.14rc01.tar.xz (LZMA-compressed, recommended)
+   1.5.14rc01.tar.gz
+   1.5.14rc01.tar.bz2
 
 Source files with CRLF line endings (for Windows), without the
 "configure" script
 
-   lp156b03.7z  (LZMA-compressed, recommended)
-   lp156b03.zip
+   lp1514r01.7z  (LZMA-compressed, recommended)
+   lp1514r01.zip
 
 Other information:
 
-   1.5.6beta03-README.txt
-   1.5.6beta03-LICENSE.txt
+   1.5.14rc01-README.txt
+   1.5.14rc01-LICENSE.txt
 
-Changes since the last public release (1.5.5):
+Changes since the last public release (1.5.13):
 
-Version 1.5.6beta01 [September 22, 2011]
-  Fixed some 64-bit type conversion warnings in pngrtran.c
-  Moved row_info from png_struct to a local variable.
-  The various interlace mask arrays have been made into arrays of
-    bytes and made PNG_CONST and static (previously some arrays were
-    marked PNG_CONST and some weren't).
-  Additional checks have been added to the transform code to validate the
-    pixel depths after the transforms on both read and write.
-  Removed some redundant code from pngwrite.c, in png_desgtroy_write_struct().
-  Changed chunk reading/writing code to use png_uint_32 instead of png_byte[4].
-    This removes the need to allocate temporary strings for chunk names on
-    the stack in the read/write code.  Unknown chunk handling still uses the
-    string form because this is exposed in the API.
+Version 1.5.14beta01 [October 24, 2012]
+  Added -DZ_SOLO to contrib/pngminim/*/makefile to work with zlib-1.2.7
+  Warn about the incorrect runtime library setting for VS2010 debug DLL builds.
+  Fixed build when using #define PNG_NO_READ_GAMMA in png_do_compose() in
+    pngrtran.c (Domani Hannes).
 
-Version 1.5.6beta02 [Septhember 26, 2011]
-  Added a note in the manual the png_read_update_info() must be called only
-    once with a particular info_ptr.
-  Fixed a typo in the definition of the new PNG_STRING_FROM_CHUNK(s,c) macro.
+Version 1.5.14beta02 [omitted]
 
-Version 1.5.6beta03 [September 28, 2011]
-  Revised test-pngtest.sh to report FAIL when pngtest fails.
-  Added "--strict" option to pngtest, to report FAIL when the failure is
-    only because the resulting valid files are different.
-  Revised CMakeLists.txt to work with mingw and removed some material from
-    CMakeLists.txt that is no longer useful in libpng-1.5.
+Version 1.5.14beta03 [December 15, 2012]
+  Added missing "-" in front of DNO_GZIP in contrib/pngminim/*/makefile.
+  Check for png_ptr==NULL earlier in png_zalloc().
+  Ignore, with a warning, out-of-range value of num_trans in png_set_tRNS().
+  Rearranged building of ARM NEON optimizations. The ARM specific code is
+    split out entirely to the arm subdirectory and changes to configure.ac and
+    Makefile.am to add new stuff are reduced.  Now material code changes,
+    although for build test purposes, --enable-arm-neon now builds on non-ARM
+    systems.
+  Rebuilt Makefile.in, configure, etc., with autoconf-2.69 and automake-1.12.5.
+  Fixed cases of unquoted DESTDIR in Makefile.am
+  Fixed a minor bug in types to malloc and major bug in handling compressed
+    iTXt. Compressed iTXt could not be handled.
 
-Send comments/corrections/commendations to png-mng-implement at lists.sf.net:
+Version 1.5.14beta04 [December 19, 2012]
+  Cleaned up whitespace in the synopsis portion of the manpage "libpng.3"
+  Disassembled the version number in scripts/options.awk (necessary for
+    building on SunOs).
+
+Version 1.5.14beta05 [December 23, 2012]
+  Fixed Windows build issues, enabled ARM compilation. Various warnings issued
+    by earlier versions of GCC fixed for Cygwin and Min/GW (which both use old
+    GCCs.) ARM support is enabled by default in zlib.props (unsupported by
+    Microsoft) and ARM compilation is made possible by deleting the check for
+    x86. The test programs cannot be run because they are not signed.
+
+Version 1.5.14beta06 [January 1, 2013]
+  Discontinued distributing libpng-1.5.14-1.5.13-diff.txt and similar.
+  Fixed 'make distcheck' on SUN OS - libpng.so was not being removed
+
+Version 1.5.14beta07 [January 6, 2012]
+  Replaced AM_CONFIG_HEADER(config.h) with AC_CONFIG_HEADERS([config.h])
+    in configure.ac
+  De-configured build fixes to make a range of deconfiguration options (such
+    as switching off read or write support) work in more cases.  Also upgraded
+    pngtest and pngvalid to the libpng 1.6 versions (with some modifications)
+    which provide more extensive testing.  Replaced pngtest.png because pngtest
+    writes the ancillary chunks in a different order.
+
+Version 1.5.14beta08 [January 10, 2013]
+  Check validity of "num_unknowns" parameter of png_set_unknown_chunks()
+    (Bug report from yuris).
+
+Version 1.5.14rc01 [January 17, 2013]
+  No changes.
+
+  ===========================================================================
+                       NOTICE November 17, 2012:
+     The location of the git repository at SourceForge has changed.
+               Visit http://libpng.sf.net/ for details.
+  ===========================================================================
+
+Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
 https://lists.sourceforge.net/lists/listinfo/png-mng-implement
-to subscribe) or to glennrp at users.sourceforge.net
+to subscribe)
+or to glennrp at users.sourceforge.net
 
 Glenn R-P

CHANGES

@@ -196,7 +196,8 @@ Version 0.97 [January, 1998]
   Added more typecasts. 65536L becomes (png_uint_32)65536L, etc. (Glenn R-P)
   Minor corrections in libpng.txt
   Added simple sRGB support (Glenn R-P)
-  Easier conditional compiling, e.g. define PNG_READ/WRITE_NOT_FULLY_SUPPORTED;
+  Easier conditional compiling, e.g.,
+    define PNG_READ/WRITE_NOT_FULLY_SUPPORTED;
     all configurable options can be selected from command-line instead
     of having to edit pngconf.h (Glenn R-P)
   Fixed memory leak in pngwrite.c (free info_ptr->text) (Glenn R-P)
@@ -207,7 +208,8 @@ Version 0.97 [January, 1998]
   Tested NODIV support and made it default behavior (Greg Roelofs)
   Added "-m" option and PNGTEST_DEBUG_MEMORY to pngtest (John Bowler)
   Regularized version numbering scheme and bumped shared-library major
-     version number to 2 to avoid problems with libpng 0.89 apps (Greg Roelofs)
+    version number to 2 to avoid problems with libpng 0.89 apps
+    (Greg Roelofs)
 
 Version 0.98 [January, 1998]
   Cleaned up some typos in libpng.txt and in code documentation
@@ -3444,7 +3446,7 @@ Version 1.5.3beta11 [June 11, 2011]
   Removed string/memory macros that are no longer used and are not
     necessarily fully supportable, particularly png_strncpy and png_snprintf.
   Added log option to pngvalid.c and attempted to improve gamma messages.
-  
+
 Version 1.5.3 [omitted]
   People found the presence of a beta release following an rc release
     to be confusing; therefore we bump the version to libpng-1.5.4beta01
@@ -3601,7 +3603,7 @@ Version 1.5.6beta01 [September 22, 2011]
     the stack in the read/write code.  Unknown chunk handling still uses the
     string form because this is exposed in the API.
 
-Version 1.5.6beta02 [Septhember 26, 2011]
+Version 1.5.6beta02 [September 26, 2011]
   Added a note in the manual the png_read_update_info() must be called only
     once with a particular info_ptr.
   Fixed a typo in the definition of the new PNG_STRING_FROM_CHUNK(s,c) macro.
@@ -3613,6 +3615,370 @@ Version 1.5.6beta03 [September 28, 2011]
   Revised CMakeLists.txt to work with mingw and removed some material from
     CMakeLists.txt that is no longer useful in libpng-1.5.
 
+Version 1.5.6beta04 [October 5, 2011]
+  Fixed typo in Makefile.in and Makefile.am ("-M Wl" should be "-M -Wl")."
+
+Version 1.5.6beta05 [October 12, 2011]
+  Speed up png_combine_row() for interlaced images. This reduces the generality
+    of the code, allowing it to be optimized for Adam7 interlace.  The masks
+    passed to png_combine_row() are now generated internally, avoiding
+    some code duplication and localizing the interlace handling somewhat.
+  Align png_struct::row_buf - previously it was always unaligned, caused by
+    a bug in the code that attempted to align it; the code needs to subtract
+    one from the pointer to take account of the filter byte prepended to
+    each row.
+  Optimized png_combine_row() when rows are aligned. This gains a small
+    percentage for 16-bit and 32-bit pixels in the typical case where the
+    output row buffers are appropriately aligned. The optimization was not
+    previously possible because the png_struct buffer was always misaligned.
+  Fixed bug in png_write_chunk_header() debug print, introduced in 1.5.6beta01.
+
+Version 1.5.6beta06 [October 17, 2011]
+  Removed two redundant tests for unitialized row.
+  Fixed a relatively harmless memory overwrite in compressed text writing
+    with a 1 byte zlib buffer.
+  Add ability to call png_read_update_info multiple times to pngvalid.c.
+  Fixes for multiple calls to png_read_update_info. These fixes attend to
+    most of the errors revealed in pngvalid, however doing the gamma work
+    twice results in inaccuracies that can't be easily fixed.  There is now
+    a warning in the code if this is going to happen.
+  Turned on multiple png_read_update_info in pngvalid transform tests.
+  Prevent libpng from overwriting unused bits at the end of the image when
+    it is not byte aligned, while reading. Prior to libpng-1.5.6 libpng would
+    overwrite the partial byte at the end of each row if the row width was not
+    an exact multiple of 8 bits and the image is not interlaced.
+
+Version 1.5.6beta07 [October 21, 2011]
+  Made png_ptr->prev_row an aligned pointer into png_ptr->big_prev_row
+    (Mans Rullgard).
+
+Version 1.5.6rc01 [October 26, 2011]
+  Changed misleading "Missing PLTE before cHRM" warning to "Out of place cHRM"
+
+Version 1.5.6rc02 [October 27, 2011]
+  Added LSR() macro to defend against buggy compilers that evaluate non-taken
+    code branches and complain about out-of-range shifts.
+
+Version 1.5.6rc03 [October 28, 2011]
+  Renamed the LSR() macro to PNG_LSR() and added PNG_LSL() macro.
+  Fixed compiler warnings with Intel and MSYS compilers. The logical shift
+    fix for Microsoft Visual C is required by other compilers, so this
+    enables that fix for all compilers when using compile-time constants.
+    Under MSYS 'byte' is a name declared in a system header file, so we
+    changed the name of a local variable to avoid the warnings that result.
+  Added #define PNG_ALIGN_TYPE PNG_ALIGN_NONE to contrib/pngminim/*/pngusr.h
+
+Version 1.5.6 [November 3, 2011]
+  No changes.
+
+Version 1.5.7beta01 [November 4, 2011]
+  Added support for ARM processor (Mans Rullgard)
+  Fixed bug in pngvalid on early allocation failure; fixed type cast in
+    pngmem.c; pngvalid would attempt to call png_error() if the allocation
+    of a png_struct or png_info failed. This would probably have led to a
+    crash.  The pngmem.c implementation of png_malloc() included a cast
+    to png_size_t which would fail on large allocations on 16-bit systems.
+  Fix for the preprocessor of the Intel C compiler. The preprocessor
+    splits adjacent @ signs with a space; this changes the concatentation
+    token from @-@-@ to PNG_JOIN; that should work with all compiler
+    preprocessors.
+  Paeth filter speed improvements from work by Siarhei Siamashka. This
+    changes the 'Paeth' reconstruction function to improve the GCC code
+    generation on x86. The changes are only part of the suggested ones;
+    just the changes that definitely improve speed and remain simple.
+    The changes also slightly increase the clarity of the code.
+
+Version 1.5.7beta02 [November 11, 2011]
+  Check compression_type parameter in png_get_iCCP and remove spurious
+    casts. The compression_type parameter is always assigned to, so must
+    be non-NULL. The cast of the profile length potentially truncated the
+    value unnecessarily on a 16-bit int system, so the cast of the (byte)
+    compression type to (int) is specified by ANSI-C anyway.
+  Fixed FP division by zero in pngvalid.c; the 'test_pixel' code left
+    the sBIT fields in the test pixel as 0, which resulted in a floating
+    point division by zero which was irrelevant but causes systems where
+    FP exceptions cause a crash. Added code to pngvalid to turn on FP
+    exceptions if the appropriate glibc support is there to ensure this is
+    tested in the future.
+  Updated scripts/pnglibconf.mak and scripts/makefile.std to handle the
+    new PNG_JOIN macro.
+  Added versioning to pnglibconf.h comments.
+  Simplified read/write API initial version; basic read/write tested on
+    a variety of images, limited documentation (in the header file.)
+  Installed more accurate linear to sRGB conversion tables. The slightly
+    modified tables reduce the number of 16-bit values that
+    convert to an off-by-one 8-bit value.  The "makesRGB.c" code that was used
+    to generate the tables is now in a contrib/sRGBtables sub-directory.
+
+Version 1.5.7beta03 [November 17, 2011]
+  Removed PNG_CONST from the sRGB table declarations in pngpriv.h and png.c
+  Added run-time detection of NEON support.
+  Added contrib/libtests; includes simplified API test and timing test and
+    a color conversion utility for rapid checking of failed 'pngstest' results.
+  Multiple transform bug fixes plus a work-round for double gamma correction.
+    libpng does not support more than one transform that requires linear data
+    at once - if this is tried typically the results is double gamma
+    correction. Since the simplified APIs can need rgb to gray combined with
+    a compose operation it is necessary to do one of these outside the main
+    libpng transform code. This check-in also contains fixes to various bugs
+    in the simplified APIs themselves and to some bugs in compose and rgb to
+    gray (on palette) itself.
+  Fixes for C++ compilation using g++ When libpng source is compiled
+    using g++. The compiler imposes C++ rules on the C source; thus it
+    is desireable to make the source work with either C or C++ rules
+    without throwing away useful error information.  This change adds
+    png_voidcast to allow C semantic (void*) cases or the corresponding
+    C++ static_cast operation, as appropriate.
+  Added --noexecstack to assembler file compilation. GCC does not set
+    this on assembler compilation, even though it does on C compilation.
+    This creates security issues if assembler code is enabled; the
+    work-around is to set it by default in the flags for $(CCAS)
+  Work around compilers that don't support declaration of const data. Some
+    compilers fault 'extern const' data declarations (because the data is
+    not initialized); this turns on const-ness only for compilers where
+    this is known to work.
+
+Version 1.5.7beta04 [November 17, 2011]
+  Since the gcc driver does not recognize the --noexecstack flag, we must
+    use the -Wa prefix to have it passed through to the assembler.
+    Also removed a duplicate setting of this flag.
+  Added files that were omitted from the libpng-1.5.7beta03 zip distribution.
+
+Version 1.5.7beta05 [November 25, 2011]
+  Removed "zTXt" from warning in generic chunk decompression function.
+  Validate time settings passed to pngset() and png_convert_to_rfc1123()
+    (Frank Busse).
+  Added MINGW support to CMakeLists.txt
+  Reject invalid compression flag or method when reading the iTXt chunk.
+  Backed out 'simplified' API changes. The API seems too complex and there
+    is a lack of consensus or enthusiasm for the proposals.  The API also
+    reveals significant bugs inside libpng (double gamma correction and the
+    known bug of being unable to retrieve a corrected palette). It seems
+    better to wait until the bugs, at least, are corrected.
+  Moved pngvalid.c into contrib/libtests
+  Rebuilt Makefile.in, configure, etc., with autoconf-2.68
+
+Version 1.5.7rc01 [December 1, 2011]
+  Replaced an "#if" with "#ifdef" in pngrtran.c
+  Revised #if PNG_DO_BC block in png.c (use #ifdef and add #else)
+
+Version 1.5.7rc02 [December 5, 2011]
+  Revised project files and contrib/pngvalid/pngvalid.c to account for
+    the relocation of pngvalid into contrib/libtests.
+  Revised pngconf.h to use " __declspec(restrict)" only when MSC_VER >= 1400,
+    as in libpng-1.5.4.
+  Put CRLF line endings in the owatcom project files.
+
+Version 1.5.7rc03 [December 7, 2011]
+  Updated CMakeLists.txt to account for the relocation of pngvalid.c
+
+Version 1.5.7 [December 15, 2011]
+  Minor fixes to pngvalid.c for gcc 4.6.2 compatibility to remove warnings
+    reported by earlier versions.
+
+Version 1.5.8beta01 [January 15, 2011]
+  Removed '#include config.h"' from contrib/libtests/pngvalid.c.  It's not
+    needed and causes trouble for VPATH building.
+  Moved AC_MSG_CHECKING([if libraries can be versioned]) later to the proper
+    location in configure.ac (Gilles Espinasse).
+  Fix bug in pngerror.c: some long warnings were being improperly truncated
+    (CVE-2011-3464, bug introduced in libpng-1.5.3beta05).
+
+Version 1.5.8rc01 [January 21, 2012]
+  No changes.
+
+Version 1.5.8rc02 [January 25, 2012]
+  Fixed Min/GW uninstall to remove libpng.dll.a
+  Conditionalize the install rules for MINGW and CYGWIN in CMakeLists.txt
+
+Version 1.5.8 [February 1, 2012]
+  No changes.
+
+Version 1.5.9beta01 [February 3, 2012]
+  Rebuilt configure scripts in the tar distributions.
+
+Version 1.5.9beta02 [February 16, 2012]
+  Removed two unused definitions from scripts/pnglibconf.h.prebuilt
+  Removed some unused arrays (with #ifdef) from png_read_push_finish_row().
+  Removed tests for no-longer-used *_EMPTY_PLTE_SUPPORTED from pngstruct.h
+
+Version 1.5.9rc01 [February 17, 2012]
+  Fixed CVE-2011-3026 buffer overrun bug.  This bug was introduced when
+    iCCP chunk support was added at libpng-1.0.6. Deal more correctly with the
+    test on iCCP chunk length. Also removed spurious casts that may hide
+    problems on 16-bit systems.
+
+Version 1.5.9 [February 18, 2012]
+  No changes.
+
+Version 1.5.10beta01 [February 24, 2012]
+  Removed two useless #ifdef directives from pngread.c and one from pngrutil.c
+  Always put the CMAKE_LIBRARY in "lib" (removed special WIN32 case).
+  Removed empty vstudio/pngstest directory (Clifford Yapp).
+  Eliminated redundant png_push_read_tEXt|zTXt|iTXt|unknown code from
+    pngpread.c and use the sequential png_handle_tEXt, etc., in pngrutil.c;
+    now that png_ptr->buffer is inaccessible to applications, the special
+    handling is no longer useful.
+  Fixed bug with png_handle_hIST with odd chunk length (Frank Busse).
+  Added PNG_SAFE_LIMITS feature to pnglibconf.dfa and code in pngconf.h
+    to reset the user limits to safe ones if PNG_SAFE_LIMITS is defined.
+    To enable, use "CPPFLAGS=-DPNG_SAFE_LIMITS_SUPPORTED" on the configure
+    command or put "#define PNG_SAFE_LIMITS_SUPPORTED" in pnglibconf.h.
+  Revised the SAFE_LIMITS feature to be the same as the feature in libpng16.
+  Added information about the new limits in the manual.
+
+Version 1.5.10beta02 [February 27, 2012]
+  Updated Makefile.in
+
+Version 1.5.10beta03 [March 6, 2012]
+  Removed unused "current_text" members of png_struct and the png_free()
+    of png_ptr->current_text from pngread.c
+  Added palette-index checking. Issue a png_warning() if an invalid index is
+    found.
+
+Version 1.5.10beta04 [March 10, 2012]
+  Fixed PNG_LIBPNG_BUILD_BASE_TYPE definition.
+  Fixed CMF optimization of non-IDAT compressed chunks, which was added at
+    libpng-1.5.4.  It sometimes produced too small of a window.
+
+Version 1.5.10beta05 [March 10, 2012]
+  Reject all iCCP chunks after the first, even if the first one is invalid.
+  Issue a png_benign_error() instead of png_warning() about bad palette index.
+  Fixed an off-by-one error in the palette index checking function.
+  Revised example.c to put text strings in a temporary character array
+    instead of directly assigning string constants to png_textp members.
+    This avoids compiler warnings when -Wwrite-strings is enabled.
+
+Version 1.5.10 [March 29, 2012]
+  Prevent PNG_EXPAND+PNG_SHIFT doing the shift twice.
+  Revised png_set_text_2() to avoid potential memory corruption (fixes
+    CVE-2011-3048, also known as CVE-2012-3425).
+
+Version 1.5.11beta01 [April 28, 2012]
+  Revised scripts/makefile.darwin: use system zlib; remove quotes around
+    architecture list; add missing ppc architecture; add architecture options
+    to shared library link; don't try to create a shared lib based on missing
+    RELEASE variable.
+  Enable png_set_check_for_invalid_index() for both read and write.
+  Removed #ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED/#endif in pngpriv.h around
+    declaration of png_handle_unknown().
+  Added -lssp_nonshared in a comment in scripts/makefile.freebsd
+    and changed deprecated NOOBJ and NOPROFILE to NO_OBJ and NO_PROFILE.
+
+Version 1.5.11rc01 [May 23, 2012]
+  No changes.
+
+Version 1.5.11rc02 [May 29, 2012]
+  Fixed some typos in comments.
+  Revised CMakeLists.txt to not attempt to make a symlink under mingw.
+  Added two images to contrib/pngsuite (1-bit and 2-bit transparent grayscale),
+    and renamed three whose names were inconsistent with those in
+    pngsuite/README.txt.
+
+Version 1.5.11rc03 [June 4, 2012]
+  Do not depend upon a GCC feature macro being available for use in generating
+    the linker mapfile symbol prefix.
+  Made fixes for new optimization warnings from gcc 4.7.0. The compiler
+    performed an optimization which is safe but then warned about it.
+    Changing the type of 'palette_number' in pngvalid.c removes the warning.
+
+Version 1.5.11rc04 [June 6, 2012]
+  Improved performance of new do_check_palette_indexes() function.
+
+Version 1.5.11rc05 [June 7, 2012]
+  Don't check palette indexes if num_palette is 0 (as it can be in MNG files).
+
+Version 1.5.11 [June 14, 2012]
+  Include zlib.h in contrib/gregbook and contrib/visupng examples.
+
+Version 1.5.12 [July 11, 2012]
+  Removed scripts/makefile.cegcc from the *.zip and *.7z distributions; it
+    depends on configure, which is not included in those archives.
+  Changed "a+w" to "u+w" in Makefile.in to fix CVE-2012-3386.
+
+Version 1.5.13beta01 [August 8, 2012]
+  Do not compile PNG_DEPRECATED, PNG_ALLOC and PNG_PRIVATE when __GNUC__ < 3.
+  Removed references to png_zalloc() and png_zfree() from the manual.
+  Revised PNG_FP_EXPORT and PNG_FIXED_EXPORT macros to avoid generating
+    lone semicolons (patch ported from libpng-1.6.0beta11).
+
+Version 1.5.13beta02 [September 10, 2012]
+  Corrected handling of the image array and the row_pointers array in example.c
+  When png_set_filler is used to strip a filler channel during write, the
+    code prior to 1.5 would ignore the case where the output required an
+    alpha channel or when the output was a palettized PNG.  In libpng-1.5 the
+    ignorance was lost and libpng proceeded to strip the channel resulting
+    in a bad (potential memory overwrite) failure later.  This reverts
+    the behavior to the pre-1.5 state but issues a warning. libpng-1.6 is
+    expected to issue an error on the erroneous png_set_filler call.
+  Use png_memset() consistently (pngmem.c contained some bare "memset" calls).
+
+Version 1.5.13rc01 [September 17, 2012]
+  No changes.
+
+Version 1.5.13 [September 27, 2012]
+  No changes.
+
+Version 1.5.14beta01 [October 24, 2012]
+  Added -DZ_SOLO to contrib/pngminim/*/makefile to work with zlib-1.2.7
+  Warn about the incorrect runtime library setting for VS2010 debug DLL builds.
+  Fixed build when using #define PNG_NO_READ_GAMMA in png_do_compose() in
+    pngrtran.c (Domani Hannes).
+
+Version 1.5.14beta02 [omitted]
+
+Version 1.5.14beta03 [December 15, 2012]
+  Added missing "-" in front of DNO_GZIP in contrib/pngminim/*/makefile.
+  Check for png_ptr==NULL earlier in png_zalloc().
+  Ignore, with a warning, out-of-range value of num_trans in png_set_tRNS().
+  Rearranged building of ARM NEON optimizations. The ARM specific code is
+    split out entirely to the arm subdirectory and changes to configure.ac and
+    Makefile.am to add new stuff are reduced.  Now material code changes,
+    although for build test purposes, --enable-arm-neon now builds on non-ARM
+    systems.
+  Rebuilt Makefile.in, configure, etc., with autoconf-2.69 and automake-1.12.5.
+  Fixed cases of unquoted DESTDIR in Makefile.am
+  Fixed a minor bug in types to malloc and major bug in handling compressed
+    iTXt. Compressed iTXt could not be handled.
+
+Version 1.5.14beta04 [December 19, 2012]
+  Cleaned up whitespace in the synopsis portion of the manpage "libpng.3"
+  Disassembled the version number in scripts/options.awk (necessary for
+    building on SunOs).
+
+Version 1.5.14beta05 [December 23, 2012]
+  Fixed Windows build issues, enabled ARM compilation. Various warnings issued
+    by earlier versions of GCC fixed for Cygwin and Min/GW (which both use old
+    GCCs.) ARM support is enabled by default in zlib.props (unsupported by
+    Microsoft) and ARM compilation is made possible by deleting the check for
+    x86. The test programs cannot be run because they are not signed.
+
+Version 1.5.14beta06 [January 1, 2013]
+  Discontinued distributing libpng-1.5.14-1.5.13-diff.txt and similar.
+  Fixed 'make distcheck' on SUN OS - libpng.so was not being removed
+
+Version 1.5.14beta07 [January 6, 2012]
+  Replaced AM_CONFIG_HEADER(config.h) with AC_CONFIG_HEADERS([config.h])
+    in configure.ac
+  De-configured build fixes to make a range of deconfiguration options (such
+    as switching off read or write support) work in more cases.  Also upgraded
+    pngtest and pngvalid to the libpng 1.6 versions (with some modifications)
+    which provide more extensive testing.  Replaced pngtest.png because pngtest
+    writes the ancillary chunks in a different order.
+
+Version 1.5.14beta08 [January 10, 2013]
+  Check validity of "num_unknowns" parameter of png_set_unknown_chunks()
+    (Bug report from yuris).
+
+Version 1.5.14rc01 [January 17, 2013]
+  No changes.
+
+  ===========================================================================
+                       NOTICE November 17, 2012:
+     The location of the git repository at SourceForge has changed.
+               Visit http://libpng.sf.net/ for details.
+  ===========================================================================
+
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
 https://lists.sourceforge.net/lists/listinfo/png-mng-implement

CMakeLists.txt

@@ -35,7 +35,7 @@ enable_testing()
 
 set(PNGLIB_MAJOR 1)
 set(PNGLIB_MINOR 5)
-set(PNGLIB_RELEASE 6)
+set(PNGLIB_RELEASE 14)
 set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR})
 set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE})
 
@@ -121,7 +121,7 @@ set(pngtest_sources
   pngtest.c
 )
 set(pngvalid_sources
-  pngvalid.c
+  contrib/libtests/pngvalid.c
 )
 # SOME NEEDED DEFINITIONS
 
@@ -176,11 +176,7 @@ endif()
 
 # Ensure the CMAKE_LIBRARY_OUTPUT_DIRECTORY is set
 IF(NOT CMAKE_LIBRARY_OUTPUT_DIRECTORY)
-  IF(WIN32)
-    SET(CMAKE_LIBRARY_OUTPUT_DIRECTORY "bin")
-  ELSE(WIN32)
-    SET(CMAKE_LIBRARY_OUTPUT_DIRECTORY "lib")
-  ENDIF(WIN32)
+  SET(CMAKE_LIBRARY_OUTPUT_DIRECTORY "lib")
 ENDIF(NOT CMAKE_LIBRARY_OUTPUT_DIRECTORY)
 
 # Set a variable with CMake code which:
@@ -188,7 +184,7 @@ ENDIF(NOT CMAKE_LIBRARY_OUTPUT_DIRECTORY)
 # copies if different.
 macro(CREATE_SYMLINK SRC_FILE DEST_FILE)
   FILE(REMOVE ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${DEST_FILE})
-  if(WIN32 AND NOT CYGWIN)
+  if(WIN32 AND NOT CYGWIN AND NOT MSYS)
     ADD_CUSTOM_COMMAND(
         OUTPUT ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${DEST_FILE}   ${CMAKE_CURRENT_BINARY_DIR}/${DEST_FILE}
         COMMAND ${CMAKE_COMMAND} -E copy        ${CMAKE_CURRENT_BINARY_DIR}/${SRC_FILE} ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${DEST_FILE}
@@ -196,10 +192,10 @@ macro(CREATE_SYMLINK SRC_FILE DEST_FILE)
         DEPENDS ${PNG_LIB_NAME} ${PNG_LIB_NAME_STATIC}
         )
     ADD_CUSTOM_TARGET(${DEST_FILE}_COPY ALL DEPENDS ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${DEST_FILE})
-  else(WIN32 AND NOT CYGWIN)
+  else(WIN32 AND NOT CYGWIN AND NOT MSYS)
     execute_process(COMMAND ${CMAKE_COMMAND} -E create_symlink ${SRC_FILE} ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${DEST_FILE} WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
     execute_process(COMMAND ${CMAKE_COMMAND} -E create_symlink ${SRC_FILE} ${DEST_FILE} WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
-  endif(WIN32 AND NOT CYGWIN)
+  endif(WIN32 AND NOT CYGWIN AND NOT MSYS)
 endmacro()
 
 # libpng is a library so default to 'lib'
@@ -211,25 +207,25 @@ endif(NOT DEFINED CMAKE_INSTALL_LIBDIR)
 # we use the same files like ./configure, so we have to set its vars
 # Only do this on Windows for Cygwin - the files don't make much sense outside
 # a UNIX look alike
-if(NOT WIN32 OR CYGWIN)
-set(prefix      ${CMAKE_INSTALL_PREFIX})
-set(exec_prefix ${CMAKE_INSTALL_PREFIX})
-set(libdir      ${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR})
-set(includedir  ${CMAKE_INSTALL_PREFIX}/include)
-set(LIBS        "-lz -lm")
-configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libpng.pc.in
-  ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}.pc @ONLY)
-CREATE_SYMLINK(${PNGLIB_NAME}.pc libpng.pc)
+if(NOT WIN32 OR CYGWIN OR MINGW) 
+  set(prefix      ${CMAKE_INSTALL_PREFIX})
+  set(exec_prefix ${CMAKE_INSTALL_PREFIX})
+  set(libdir      ${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR})
+  set(includedir  ${CMAKE_INSTALL_PREFIX}/include)
+  set(LIBS        "-lz -lm")
+  configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libpng.pc.in
+    ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}.pc @ONLY)
+  CREATE_SYMLINK(${PNGLIB_NAME}.pc libpng.pc)
 
-configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libpng-config.in
-  ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config @ONLY)
-CREATE_SYMLINK(${PNGLIB_NAME}-config libpng-config)
-endif(NOT WIN32 OR CYGWIN)
+  configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libpng-config.in
+    ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config @ONLY)
+  CREATE_SYMLINK(${PNGLIB_NAME}-config libpng-config)
+endif(NOT WIN32 OR CYGWIN OR MINGW)
 
 # SET UP LINKS
 if(PNG_SHARED)
   set_target_properties(${PNG_LIB_NAME} PROPERTIES
-#   VERSION 15.${PNGLIB_RELEASE}.1.5.6beta03
+#   VERSION 15.${PNGLIB_RELEASE}.1.5.14rc01
     VERSION 15.${PNGLIB_RELEASE}.0
     SOVERSION 15
     CLEAN_DIRECT_OUTPUT 1)
@@ -264,13 +260,13 @@ if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL )
         ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
 
     # Create a symlink for libpng.dll.a => libpng15.dll.a on Cygwin
-    if(CYGWIN)
+    if(CYGWIN OR MINGW)
        get_target_property(BUILD_TARGET_LOCATION ${PNG_LIB_NAME} LOCATION_${CMAKE_BUILD_TYPE})
        get_filename_component(BUILD_TARGET_FILE ${BUILD_TARGET_LOCATION} NAME)
        CREATE_SYMLINK(${BUILD_TARGET_FILE} libpng${CMAKE_IMPORT_LIBRARY_SUFFIX})
        install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng${CMAKE_IMPORT_LIBRARY_SUFFIX}
          DESTINATION ${CMAKE_INSTALL_LIBDIR})
-    endif(CYGWIN)
+    endif(CYGWIN OR MINGW)
 
     if(NOT WIN32)
       get_target_property(BUILD_TARGET_LOCATION ${PNG_LIB_NAME} LOCATION_${CMAKE_BUILD_TYPE})
@@ -286,13 +282,13 @@ if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL )
         ${PNG_EXPORT_RULE}
         LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
         ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
-    if(NOT WIN32 OR CYGWIN)
+    if(NOT WIN32 OR CYGWIN OR MINGW)
       get_target_property(BUILD_TARGET_LOCATION ${PNG_LIB_NAME_STATIC} LOCATION_${CMAKE_BUILD_TYPE})
       get_filename_component(BUILD_TARGET_FILE ${BUILD_TARGET_LOCATION} NAME)
       CREATE_SYMLINK(${BUILD_TARGET_FILE} libpng${CMAKE_STATIC_LIBRARY_SUFFIX})
       install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng${CMAKE_STATIC_LIBRARY_SUFFIX}
          DESTINATION ${CMAKE_INSTALL_LIBDIR})
-    endif(NOT WIN32 OR CYGWIN)
+    endif(NOT WIN32 OR CYGWIN OR MINGW)
  endif()
 endif()
 
@@ -301,10 +297,13 @@ if(NOT SKIP_INSTALL_HEADERS AND NOT SKIP_INSTALL_ALL )
   install(FILES ${libpng_public_hdrs}   DESTINATION include/${PNGLIB_NAME})
 endif()
 if(NOT SKIP_INSTALL_EXECUTABLES AND NOT SKIP_INSTALL_ALL )
-  install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/libpng-config DESTINATION bin)
-  install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config
-          DESTINATION bin)
+  if(NOT WIN32 OR CYGWIN OR MINGW)
+    install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/libpng-config DESTINATION bin)
+    install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config
+            DESTINATION bin)
+  endif(NOT WIN32 OR CYGWIN OR MINGW)
 endif()
+
 if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL )
   # Install man pages
   if(NOT PNG_MAN_DIR)
@@ -313,14 +312,16 @@ if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL )
   install(FILES libpng.3 libpngpf.3      DESTINATION ${PNG_MAN_DIR}/man3)
   install(FILES png.5                    DESTINATION ${PNG_MAN_DIR}/man5)
   # Install pkg-config files
-  install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng.pc
-          DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
-  install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/libpng-config
-          DESTINATION bin)
-  install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}.pc
-          DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
-  install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config
-          DESTINATION bin)
+  if(NOT WIN32 OR CYGWIN OR MINGW)
+    install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng.pc
+            DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
+    install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/libpng-config
+            DESTINATION bin)
+    install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}.pc
+            DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
+    install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config
+            DESTINATION bin)
+  endif(NOT WIN32 OR CYGWIN OR MINGW)
 endif()
 
 # On versions of CMake that support it, create an export file CMake

INSTALL

@@ -133,3 +133,23 @@ run "make install".
 Further information can be found in the README and libpng-manual.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 might 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/libpng%NN%, or whatever.
+
+If you find that the configure script is out-of-date or is not supporting
+your platform properly, try running autogen.sh to regenerate "configure",
+"Makefile.in", and the other configuration files. Then try configure again.
+

LICENSE

@@ -10,8 +10,8 @@ this sentence.
 
 This code is released under the libpng license.
 
-libpng versions 1.2.6, August 15, 2004, through 1.5.6beta03, September 28, 2011, are
-Copyright (c) 2004, 2006-2011 Glenn Randers-Pehrson, and are
+libpng versions 1.2.6, August 15, 2004, through 1.5.14rc01, January 17, 2013, are
+Copyright (c) 2004, 2006-2012 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
-September 28, 2011
+January 17, 2013

Makefile.am

@@ -12,13 +12,17 @@ PNGLIB_BASENAME= libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@
 AUTOMAKE_OPTIONS = foreign
 
 # test programs - run on make check, make distcheck
-check_PROGRAMS= pngtest pngvalid
+TESTS_ENVIRONMENT= srcdir=$(srcdir)
+check_PROGRAMS= pngtest
 pngtest_SOURCES = pngtest.c
 pngtest_LDADD = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
-pngvalid_SOURCES = pngvalid.c
+TESTS = test-pngtest.sh
+
+# Only do the following if the contrib directory is present.
+check_PROGRAMS+= pngvalid
+pngvalid_SOURCES = contrib/libtests/pngvalid.c
 pngvalid_LDADD = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
-TESTS = test-pngtest.sh test-pngvalid-simple.sh test-pngvalid-full.sh
-TESTS_ENVIRONMENT= srcdir=$(srcdir)
+TESTS += test-pngvalid-simple.sh test-pngvalid-full.sh
 
 # man pages
 dist_man_MANS= libpng.3 libpngpf.3 png.5
@@ -34,7 +38,12 @@ lib_LTLIBRARIES=libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
 libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = png.c pngerror.c\
 	pngget.c pngmem.c pngpread.c pngread.c pngrio.c pngrtran.c pngrutil.c\
 	pngset.c pngtrans.c pngwio.c pngwrite.c pngwtran.c pngwutil.c\
-	png.h pngconf.h pngdebug.h pnginfo.h pngpriv.h pngstruct.h
+	png.h pngconf.h pngdebug.h pnginfo.h pngpriv.h pngstruct.h pngusr.dfa
+
+if PNG_ARM_NEON
+libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES += arm/arm_init.c\
+	arm/filter_neon.S
+endif
 
 nodist_libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = pnglibconf.h
 
@@ -46,7 +55,7 @@ libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LDFLAGS = -no-undefined -export-dynamic \
 if HAVE_LD_VERSION_SCRIPT
 #   Versioned symbols and restricted exports
 if HAVE_SOLARIS_LD
-  libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LDFLAGS += -Wl,-M Wl,libpng.vers
+  libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LDFLAGS += -Wl,-M -Wl,libpng.vers
 else
   libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LDFLAGS += -Wl,--version-script=libpng.vers
 endif
@@ -122,7 +131,7 @@ $(srcdir)/scripts/pnglibconf.h.prebuilt:
 # The following is necessary to ensure that the local pnglibconf.h is used, not
 # an installed one (this can happen immediately after on a clean system if
 # 'make test' is the first thing the user does.)
-pngvalid.o pngtest.o: pnglibconf.h
+contrib/libtests/pngvalid.o pngtest.o: pnglibconf.h
 
 # We must use -DPNG_NO_USE_READ_MACROS here even when the library may actually
 # be built with PNG_USE_READ_MACROS; this prevents the read macros from
@@ -138,17 +147,18 @@ SYMBOL_CFLAGS = -DPNGLIB_LIBNAME='PNG@PNGLIB_MAJOR@@PNGLIB_MINOR@_0'\
 	echo '#include "$<"' >dfn.c
 	$(DFNCPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) @LIBPNG_DEFINES@\
 	    $(CPPFLAGS) $(SYMBOL_CFLAGS) dfn.c > dfn1.out
-	$(SED) -n -e 's|^.*PNG_DEFN_MAGIC-\(.*\)-PNG_DEFN_END.*$$|\1|p'\
+	$(SED) -n -e 's|^.*PNG_DEFN_MAGIC *-\(.*\)- *PNG_DEFN_END.*$$|\1|p'\
 	    dfn1.out >dfn2.out
-	$(SED) -e 's| *@@@ *||g' -e 's| *$$||' dfn2.out >dfn3.out
+	$(SED) -e 's| *PNG_JOIN *||g' -e 's| *$$||' dfn2.out >dfn3.out
 	rm -f dfn.c dfn[12].out
 	mv dfn3.out $@
 
 # The .dfn file for pnglibconf.h is machine generated
-pnglibconf.dfn: scripts/pnglibconf.dfa scripts/options.awk
+pnglibconf.dfn: scripts/pnglibconf.dfa scripts/options.awk pngconf.h pngusr.dfa $(DFA_XTRA)
 	rm -f $@ dfn?.out
-	$(AWK) -f ${srcdir}/scripts/options.awk out=dfn1.out\
-	    ${srcdir}/scripts/pnglibconf.dfa $(DFA_XTRA) 1>&2
+	$(AWK) -f ${srcdir}/scripts/options.awk out=dfn1.out version=search\
+	    ${srcdir}/pngconf.h ${srcdir}/scripts/pnglibconf.dfa\
+	    ${srcdir}/pngusr.dfa $(DFA_XTRA) 1>&2
 	$(AWK) -f ${srcdir}/scripts/options.awk out=dfn2.out dfn1.out 1>&2
 	rm dfn1.out
 	mv dfn2.out $@
@@ -163,12 +173,13 @@ scripts/symbols.chk: scripts/checksym.awk scripts/symbols.def scripts/symbols.ou
 
 # used on demand to regenerate the standard header, CPPFLAGS should
 # be empty - no non-standard defines
-scripts/pnglibconf.dfn: scripts/pnglibconf.dfa scripts/options.awk
+scripts/pnglibconf.dfn: scripts/pnglibconf.dfa scripts/options.awk pngconf.h
 	rm -f $@ dfn?.out
 	test -z "$(CPPFLAGS)"
 	echo "com @PNGLIB_VERSION@ STANDARD API DEFINITION" |\
-	$(AWK) -f ${srcdir}/scripts/options.awk out=dfn1.out\
-	    logunsupported=1 - ${srcdir}/scripts/pnglibconf.dfa 1>&2
+	$(AWK) -f ${srcdir}/scripts/options.awk out=dfn1.out logunsupported=1
+		version=search ${srcdir}/pngconf.h -\
+		${srcdir}/scripts/pnglibconf.dfa 1>&2
 	$(AWK) -f ${srcdir}/scripts/options.awk out=dfn2.out dfn1.out 1>&2
 	rm dfn1.out
 	mv dfn2.out $@
@@ -187,22 +198,24 @@ dist-hook:
 
 # install the .../include headers as links to the new ones
 install-data-hook:
-	cd $(DESTDIR)$(includedir); rm -f png.h pngconf.h pnglibconf.h
-	cd $(DESTDIR)$(includedir); $(LN_S) $(PNGLIB_BASENAME)/png.h png.h
-	cd $(DESTDIR)$(includedir); $(LN_S) $(PNGLIB_BASENAME)/pngconf.h \
+	cd '$(DESTDIR)$(includedir)'; rm -f png.h pngconf.h pnglibconf.h
+	cd '$(DESTDIR)$(includedir)'; $(LN_S) $(PNGLIB_BASENAME)/png.h png.h
+	cd '$(DESTDIR)$(includedir)'; $(LN_S) $(PNGLIB_BASENAME)/pngconf.h \
 		pngconf.h
-	cd $(DESTDIR)$(includedir); $(LN_S) $(PNGLIB_BASENAME)/pnglibconf.h \
+	cd '$(DESTDIR)$(includedir)'; $(LN_S) $(PNGLIB_BASENAME)/pnglibconf.h \
 		pnglibconf.h
-	cd $(DESTDIR)$(pkgconfigdir); rm -f libpng.pc
-	cd $(DESTDIR)$(pkgconfigdir); $(LN_S) $(PNGLIB_BASENAME).pc libpng.pc
+	cd '$(DESTDIR)$(pkgconfigdir)'; rm -f libpng.pc
+	cd '$(DESTDIR)$(pkgconfigdir)'; $(LN_S) $(PNGLIB_BASENAME).pc libpng.pc
 
 # do evil things to libpng to cause libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@ to be used
 install-exec-hook:
-	cd $(DESTDIR)$(bindir); rm -f libpng-config
-	cd $(DESTDIR)$(bindir); $(LN_S) $(PNGLIB_BASENAME)-config libpng-config
+	cd '$(DESTDIR)$(bindir)'; rm -f libpng-config
+	cd '$(DESTDIR)$(bindir)';\
+	   $(LN_S) $(PNGLIB_BASENAME)-config libpng-config
 	@set -x;\
-	cd $(DESTDIR)$(libdir);\
-	for ext in a la so so.@PNGLIB_MAJOR@@PNGLIB_MINOR@.@PNGLIB_RELEASE@ sl dylib dll.a; do\
+	cd '$(DESTDIR)$(libdir)';\
+	for ext in a la so so.@PNGLIB_MAJOR@@PNGLIB_MINOR@.@PNGLIB_RELEASE@\
+	   sl dylib dll.a; do\
 		rm -f libpng.$$ext;\
                 if test -f $(PNGLIB_BASENAME).$$ext; then\
                        $(LN_S) $(PNGLIB_BASENAME).$$ext libpng.$$ext;\
@@ -210,8 +223,13 @@ install-exec-hook:
 	done
 
 uninstall-hook:
-	cd $(DESTDIR)$(includedir); rm -f png.h pngconf.h pnglibconf.h
-	rm -f $(DESTDIR)$(pkgconfigdir)/libpng.pc
-	rm -f $(DESTDIR)$(bindir)/libpng-config
-	rm -f $(DESTDIR)$(libdir)/libpng.a
-	rm -f $(DESTDIR)$(libdir)/libpng.la
+	cd '$(DESTDIR)$(includedir)'; rm -f png.h pngconf.h pnglibconf.h
+	rm -f '$(DESTDIR)$(pkgconfigdir)/libpng.pc'
+	rm -f '$(DESTDIR)$(bindir)/libpng-config'
+	rm -f '$(DESTDIR)$(libdir)/libpng.a'
+	rm -f '$(DESTDIR)$(libdir)/libpng.la'
+	rm -f '$(DESTDIR)$(libdir)/libpng.so'
+	rm -f '$(DESTDIR)$(libdir)/libpng.so.@PNGLIB_MAJOR@@PNGLIB_MINOR@.@PNGLIB_RELEASE@'
+	rm -f '$(DESTDIR)$(libdir)/libpng.sl'
+	rm -f '$(DESTDIR)$(libdir)/libpng.dylib'
+	rm -f '$(DESTDIR)$(libdir)/libpng.dll.a'

Makefile.in

@@ -1,9 +1,8 @@
-# Makefile.in generated by automake 1.11.1 from Makefile.am.
+# Makefile.in generated by automake 1.12.5 from Makefile.am.
 # @configure_input@
 
-# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
-# 2003, 2004, 2005, 2006, 2007, 2008, 2009  Free Software Foundation,
-# Inc.
+# Copyright (C) 1994-2012 Free Software Foundation, Inc.
+
 # This Makefile.in 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.
@@ -23,6 +22,23 @@
 
 
 VPATH = @srcdir@
+am__make_dryrun = \
+  { \
+    am__dry=no; \
+    case $$MAKEFLAGS in \
+      *\\[\ \	]*) \
+        echo 'am--echo: ; @echo "AM"  OK' | $(MAKE) -f - 2>/dev/null \
+          | grep '^AM OK$$' >/dev/null || am__dry=yes;; \
+      *) \
+        for am__flg in $$MAKEFLAGS; do \
+          case $$am__flg in \
+            *=*|--*) ;; \
+            *n*) am__dry=yes; break;; \
+          esac; \
+        done;; \
+    esac; \
+    test $$am__dry = yes; \
+  }
 pkgdatadir = $(datadir)/@PACKAGE@
 pkglibdir = $(libdir)/@PACKAGE@
 pkglibexecdir = $(libexecdir)/@PACKAGE@
@@ -41,12 +57,15 @@ POST_UNINSTALL = :
 build_triplet = @build@
 host_triplet = @host@
 check_PROGRAMS = pngtest$(EXEEXT) pngvalid$(EXEEXT)
+@PNG_ARM_NEON_TRUE@am__append_1 = arm/arm_init.c\
+@PNG_ARM_NEON_TRUE@	arm/filter_neon.S
+
 
 #   Versioned symbols and restricted exports
-@HAVE_LD_VERSION_SCRIPT_TRUE@@HAVE_SOLARIS_LD_TRUE@am__append_1 = -Wl,-M Wl,libpng.vers
-@HAVE_LD_VERSION_SCRIPT_TRUE@@HAVE_SOLARIS_LD_FALSE@am__append_2 = -Wl,--version-script=libpng.vers
+@HAVE_LD_VERSION_SCRIPT_TRUE@@HAVE_SOLARIS_LD_TRUE@am__append_2 = -Wl,-M -Wl,libpng.vers
+@HAVE_LD_VERSION_SCRIPT_TRUE@@HAVE_SOLARIS_LD_FALSE@am__append_3 = -Wl,--version-script=libpng.vers
 #   Only restricted exports when possible
-@HAVE_LD_VERSION_SCRIPT_FALSE@am__append_3 = -export-symbols libpng.sym
+@HAVE_LD_VERSION_SCRIPT_FALSE@am__append_4 = -export-symbols libpng.sym
 subdir = .
 DIST_COMMON = README $(am__configure_deps) $(dist_man_MANS) \
 	$(pkginclude_HEADERS) $(srcdir)/Makefile.am \
@@ -85,12 +104,26 @@ am__nobase_list = $(am__nobase_strip_setup); \
 am__base_list = \
   sed '$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;s/\n/ /g' | \
   sed '$$!N;$$!N;$$!N;$$!N;s/\n/ /g'
+am__uninstall_files_from_dir = { \
+  test -z "$$files" \
+    || { test ! -d "$$dir" && test ! -f "$$dir" && test ! -r "$$dir"; } \
+    || { echo " ( cd '$$dir' && rm -f" $$files ")"; \
+         $(am__cd) "$$dir" && rm -f $$files; }; \
+  }
 am__installdirs = "$(DESTDIR)$(libdir)" "$(DESTDIR)$(bindir)" \
 	"$(DESTDIR)$(man3dir)" "$(DESTDIR)$(man5dir)" \
 	"$(DESTDIR)$(pkgconfigdir)" "$(DESTDIR)$(pkgincludedir)" \
 	"$(DESTDIR)$(pkgincludedir)"
 LTLIBRARIES = $(lib_LTLIBRARIES)
 libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LIBADD =
+am__libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES_DIST = png.c \
+	pngerror.c pngget.c pngmem.c pngpread.c pngread.c pngrio.c \
+	pngrtran.c pngrutil.c pngset.c pngtrans.c pngwio.c pngwrite.c \
+	pngwtran.c pngwutil.c png.h pngconf.h pngdebug.h pnginfo.h \
+	pngpriv.h pngstruct.h pngusr.dfa arm/arm_init.c \
+	arm/filter_neon.S
+@PNG_ARM_NEON_TRUE@am__objects_1 = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-arm_init.lo \
+@PNG_ARM_NEON_TRUE@	libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-filter_neon.lo
 am_libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_OBJECTS =  \
 	libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-png.lo \
 	libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngerror.lo \
@@ -106,7 +139,8 @@ am_libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_OBJECTS =  \
 	libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngwio.lo \
 	libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngwrite.lo \
 	libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngwtran.lo \
-	libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngwutil.lo
+	libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngwutil.lo \
+	$(am__objects_1)
 nodist_libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_OBJECTS =
 libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_OBJECTS =  \
 	$(am_libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_OBJECTS) \
@@ -127,6 +161,11 @@ DEFAULT_INCLUDES = -I.@am__isrc@
 depcomp = $(SHELL) $(top_srcdir)/depcomp
 am__depfiles_maybe = depfiles
 am__mv = mv -f
+CPPASCOMPILE = $(CCAS) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \
+	$(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CCASFLAGS) $(CCASFLAGS)
+LTCPPASCOMPILE = $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
+	--mode=compile $(CCAS) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) \
+	$(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CCASFLAGS) $(CCASFLAGS)
 COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
 	$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
 LTCOMPILE = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
@@ -139,8 +178,14 @@ LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
 SOURCES = $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES) \
 	$(nodist_libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES) \
 	$(pngtest_SOURCES) $(pngvalid_SOURCES)
-DIST_SOURCES = $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES) \
+DIST_SOURCES =  \
+	$(am__libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES_DIST) \
 	$(pngtest_SOURCES) $(pngvalid_SOURCES)
+am__can_run_installinfo = \
+  case $$AM_UPDATE_INFO_DIR in \
+    n|no|NO) false;; \
+    *) (install-info --version) >/dev/null 2>&1;; \
+  esac
 man3dir = $(mandir)/man3
 man5dir = $(mandir)/man5
 NROFF = nroff
@@ -149,24 +194,35 @@ DATA = $(pkgconfig_DATA)
 HEADERS = $(nodist_pkginclude_HEADERS) $(pkginclude_HEADERS)
 ETAGS = etags
 CTAGS = ctags
-am__tty_colors = \
-red=; grn=; lgn=; blu=; std=
+CSCOPE = cscope
+AM_RECURSIVE_TARGETS = cscope
+am__tty_colors_dummy = \
+  mgn= red= grn= lgn= blu= brg= std=; \
+  am__color_tests=no
+am__tty_colors = $(am__tty_colors_dummy)
 DISTFILES = $(DIST_COMMON) $(DIST_SOURCES) $(TEXINFOS) $(EXTRA_DIST)
 distdir = $(PACKAGE)-$(VERSION)
 top_distdir = $(distdir)
 am__remove_distdir = \
-  { test ! -d "$(distdir)" \
-    || { find "$(distdir)" -type d ! -perm -200 -exec chmod u+w {} ';' \
-         && rm -fr "$(distdir)"; }; }
+  if test -d "$(distdir)"; then \
+    find "$(distdir)" -type d ! -perm -200 -exec chmod u+w {} ';' \
+      && rm -rf "$(distdir)" \
+      || { sleep 5 && rm -rf "$(distdir)"; }; \
+  else :; fi
+am__post_remove_distdir = $(am__remove_distdir)
 DIST_ARCHIVES = $(distdir).tar.gz
 GZIP_ENV = --best
+DIST_TARGETS = dist-gzip
 distuninstallcheck_listfiles = find . -type f -print
+am__distuninstallcheck_listfiles = $(distuninstallcheck_listfiles) \
+  | sed 's|^\./|$(prefix)/|' | grep -v '$(infodir)/dir$$'
 distcleancheck_listfiles = find . -type f -print
 
 #distribute headers in /usr/include/libpng/*
 pkgincludedir = $(includedir)/$(PNGLIB_BASENAME)
 ACLOCAL = @ACLOCAL@
 AMTAR = @AMTAR@
+AM_CCASFLAGS = @AM_CCASFLAGS@
 AR = @AR@
 AS = @AS@
 AUTOCONF = @AUTOCONF@
@@ -174,6 +230,9 @@ AUTOHEADER = @AUTOHEADER@
 AUTOMAKE = @AUTOMAKE@
 AWK = @AWK@
 CC = @CC@
+CCAS = @CCAS@
+CCASDEPMODE = @CCASDEPMODE@
+CCASFLAGS = @CCASFLAGS@
 CCDEPMODE = @CCDEPMODE@
 CFLAGS = @CFLAGS@
 CPP = @CPP@
@@ -309,12 +368,14 @@ PNGLIB_BASENAME = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@
 # to get red "FAIL" and green "PASS" notations during tests.
 # AUTOMAKE_OPTIONS = foreign color-tests
 AUTOMAKE_OPTIONS = foreign
+
+# test programs - run on make check, make distcheck
+TESTS_ENVIRONMENT = srcdir=$(srcdir)
 pngtest_SOURCES = pngtest.c
 pngtest_LDADD = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
-pngvalid_SOURCES = pngvalid.c
-pngvalid_LDADD = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
 TESTS = test-pngtest.sh test-pngvalid-simple.sh test-pngvalid-full.sh
-TESTS_ENVIRONMENT = srcdir=$(srcdir)
+pngvalid_SOURCES = contrib/libtests/pngvalid.c
+pngvalid_LDADD = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
 
 # man pages
 dist_man_MANS = libpng.3 libpngpf.3 png.5
@@ -324,17 +385,17 @@ bin_SCRIPTS = @binconfigs@
 # rules to build libpng, only build the old library on request
 lib_LTLIBRARIES = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
 # EXTRA_LTLIBRARIES= libpng.la
-libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = png.c pngerror.c\
-	pngget.c pngmem.c pngpread.c pngread.c pngrio.c pngrtran.c pngrutil.c\
-	pngset.c pngtrans.c pngwio.c pngwrite.c pngwtran.c pngwutil.c\
-	png.h pngconf.h pngdebug.h pnginfo.h pngpriv.h pngstruct.h
-
+libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = png.c pngerror.c \
+	pngget.c pngmem.c pngpread.c pngread.c pngrio.c pngrtran.c \
+	pngrutil.c pngset.c pngtrans.c pngwio.c pngwrite.c pngwtran.c \
+	pngwutil.c png.h pngconf.h pngdebug.h pnginfo.h pngpriv.h \
+	pngstruct.h pngusr.dfa $(am__append_1)
 nodist_libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = pnglibconf.h
 libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS = @LIBPNG_DEFINES@
 libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LDFLAGS = -no-undefined \
 	-export-dynamic -version-number \
 	@PNGLIB_MAJOR@@PNGLIB_MINOR@:@PNGLIB_RELEASE@:0 \
-	$(am__append_1) $(am__append_2) $(am__append_3)
+	$(am__append_2) $(am__append_3) $(am__append_4)
 @HAVE_LD_VERSION_SCRIPT_FALSE@libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_DEPENDENCIES = libpng.sym
 @HAVE_LD_VERSION_SCRIPT_TRUE@libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_DEPENDENCIES = libpng.vers
 pkginclude_HEADERS = png.h pngconf.h
@@ -372,8 +433,8 @@ all: config.h
 	$(MAKE) $(AM_MAKEFLAGS) all-am
 
 .SUFFIXES:
-.SUFFIXES: .chk .dfn .out .c .lo .o .obj
-am--refresh:
+.SUFFIXES: .chk .dfn .out .S .c .lo .o .obj
+am--refresh: Makefile
 	@:
 $(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(am__configure_deps)
 	@for dep in $?; do \
@@ -409,10 +470,8 @@ $(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
 $(am__aclocal_m4_deps):
 
 config.h: stamp-h1
-	@if test ! -f $@; then \
-	  rm -f stamp-h1; \
-	  $(MAKE) $(AM_MAKEFLAGS) stamp-h1; \
-	else :; fi
+	@if test ! -f $@; then rm -f stamp-h1; else :; fi
+	@if test ! -f $@; then $(MAKE) $(AM_MAKEFLAGS) stamp-h1; else :; fi
 
 stamp-h1: $(srcdir)/config.h.in $(top_builddir)/config.status
 	@rm -f stamp-h1
@@ -430,7 +489,6 @@ libpng-config: $(top_builddir)/config.status $(srcdir)/libpng-config.in
 	cd $(top_builddir) && $(SHELL) ./config.status $@
 install-libLTLIBRARIES: $(lib_LTLIBRARIES)
 	@$(NORMAL_INSTALL)
-	test -z "$(libdir)" || $(MKDIR_P) "$(DESTDIR)$(libdir)"
 	@list='$(lib_LTLIBRARIES)'; test -n "$(libdir)" || list=; \
 	list2=; for p in $$list; do \
 	  if test -f $$p; then \
@@ -438,6 +496,8 @@ install-libLTLIBRARIES: $(lib_LTLIBRARIES)
 	  else :; fi; \
 	done; \
 	test -z "$$list2" || { \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(libdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(libdir)" || exit 1; \
 	  echo " $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 '$(DESTDIR)$(libdir)'"; \
 	  $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG) $$list2 "$(DESTDIR)$(libdir)"; \
 	}
@@ -453,13 +513,15 @@ uninstall-libLTLIBRARIES:
 
 clean-libLTLIBRARIES:
 	-test -z "$(lib_LTLIBRARIES)" || rm -f $(lib_LTLIBRARIES)
-	@list='$(lib_LTLIBRARIES)'; for p in $$list; do \
-	  dir="`echo $$p | sed -e 's|/[^/]*$$||'`"; \
-	  test "$$dir" != "$$p" || dir=.; \
-	  echo "rm -f \"$${dir}/so_locations\""; \
-	  rm -f "$${dir}/so_locations"; \
-	done
-libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la: $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_OBJECTS) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_DEPENDENCIES) 
+	@list='$(lib_LTLIBRARIES)'; \
+	locs=`for p in $$list; do echo $$p; done | \
+	      sed 's|^[^/]*$$|.|; s|/[^/]*$$||; s|$$|/so_locations|' | \
+	      sort -u`; \
+	test -z "$$locs" || { \
+	  echo rm -f $${locs}; \
+	  rm -f $${locs}; \
+	}
+libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la: $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_OBJECTS) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_DEPENDENCIES) $(EXTRA_libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_DEPENDENCIES) 
 	$(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LINK) -rpath $(libdir) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_OBJECTS) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LIBADD) $(LIBS)
 
 clean-checkPROGRAMS:
@@ -470,16 +532,19 @@ clean-checkPROGRAMS:
 	list=`for p in $$list; do echo "$$p"; done | sed 's/$(EXEEXT)$$//'`; \
 	echo " rm -f" $$list; \
 	rm -f $$list
-pngtest$(EXEEXT): $(pngtest_OBJECTS) $(pngtest_DEPENDENCIES) 
+pngtest$(EXEEXT): $(pngtest_OBJECTS) $(pngtest_DEPENDENCIES) $(EXTRA_pngtest_DEPENDENCIES) 
 	@rm -f pngtest$(EXEEXT)
 	$(LINK) $(pngtest_OBJECTS) $(pngtest_LDADD) $(LIBS)
-pngvalid$(EXEEXT): $(pngvalid_OBJECTS) $(pngvalid_DEPENDENCIES) 
+pngvalid$(EXEEXT): $(pngvalid_OBJECTS) $(pngvalid_DEPENDENCIES) $(EXTRA_pngvalid_DEPENDENCIES) 
 	@rm -f pngvalid$(EXEEXT)
 	$(LINK) $(pngvalid_OBJECTS) $(pngvalid_LDADD) $(LIBS)
 install-binSCRIPTS: $(bin_SCRIPTS)
 	@$(NORMAL_INSTALL)
-	test -z "$(bindir)" || $(MKDIR_P) "$(DESTDIR)$(bindir)"
 	@list='$(bin_SCRIPTS)'; test -n "$(bindir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(bindir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(bindir)" || exit 1; \
+	fi; \
 	for p in $$list; do \
 	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
 	  if test -f "$$d$$p"; then echo "$$d$$p"; echo "$$p"; else :; fi; \
@@ -507,9 +572,7 @@ uninstall-binSCRIPTS:
 	@list='$(bin_SCRIPTS)'; test -n "$(bindir)" || exit 0; \
 	files=`for p in $$list; do echo "$$p"; done | \
 	       sed -e 's,.*/,,;$(transform)'`; \
-	test -n "$$list" || exit 0; \
-	echo " ( cd '$(DESTDIR)$(bindir)' && rm -f" $$files ")"; \
-	cd "$(DESTDIR)$(bindir)" && rm -f $$files
+	dir='$(DESTDIR)$(bindir)'; $(am__uninstall_files_from_dir)
 
 mostlyclean-compile:
 	-rm -f *.$(OBJEXT)
@@ -517,6 +580,8 @@ mostlyclean-compile:
 distclean-compile:
 	-rm -f *.tab.c
 
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-arm_init.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-filter_neon.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-png.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngerror.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngget.Plo@am__quote@
@@ -535,6 +600,34 @@ distclean-compile:
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/pngtest.Po@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/pngvalid.Po@am__quote@
 
+.S.o:
+@am__fastdepCCAS_TRUE@	$(CPPASCOMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
+@am__fastdepCCAS_TRUE@	$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
+@AMDEP_TRUE@@am__fastdepCCAS_FALSE@	source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCCAS_FALSE@	DEPDIR=$(DEPDIR) $(CCASDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCCAS_FALSE@	$(CPPASCOMPILE) -c -o $@ $<
+
+.S.obj:
+@am__fastdepCCAS_TRUE@	$(CPPASCOMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ `$(CYGPATH_W) '$<'`
+@am__fastdepCCAS_TRUE@	$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
+@AMDEP_TRUE@@am__fastdepCCAS_FALSE@	source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCCAS_FALSE@	DEPDIR=$(DEPDIR) $(CCASDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCCAS_FALSE@	$(CPPASCOMPILE) -c -o $@ `$(CYGPATH_W) '$<'`
+
+.S.lo:
+@am__fastdepCCAS_TRUE@	$(LTCPPASCOMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
+@am__fastdepCCAS_TRUE@	$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Plo
+@AMDEP_TRUE@@am__fastdepCCAS_FALSE@	source='$<' object='$@' libtool=yes @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCCAS_FALSE@	DEPDIR=$(DEPDIR) $(CCASDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCCAS_FALSE@	$(LTCPPASCOMPILE) -c -o $@ $<
+
+libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-filter_neon.lo: arm/filter_neon.S
+@am__fastdepCCAS_TRUE@	$(LIBTOOL)  $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CCAS) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS) $(CPPFLAGS) $(AM_CCASFLAGS) $(CCASFLAGS) -MT libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-filter_neon.lo -MD -MP -MF $(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-filter_neon.Tpo -c -o libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-filter_neon.lo `test -f 'arm/filter_neon.S' || echo '$(srcdir)/'`arm/filter_neon.S
+@am__fastdepCCAS_TRUE@	$(am__mv) $(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-filter_neon.Tpo $(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-filter_neon.Plo
+@AMDEP_TRUE@@am__fastdepCCAS_FALSE@	source='arm/filter_neon.S' object='libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-filter_neon.lo' libtool=yes @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCCAS_FALSE@	DEPDIR=$(DEPDIR) $(CCASDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCCAS_FALSE@	$(LIBTOOL)  $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CCAS) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS) $(CPPFLAGS) $(AM_CCASFLAGS) $(CCASFLAGS) -c -o libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-filter_neon.lo `test -f 'arm/filter_neon.S' || echo '$(srcdir)/'`arm/filter_neon.S
+
 .c.o:
 @am__fastdepCC_TRUE@	$(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
 @am__fastdepCC_TRUE@	$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
@@ -661,6 +754,27 @@ libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngwutil.lo: pngwutil.c
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
 @am__fastdepCC_FALSE@	$(LIBTOOL)  --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-pngwutil.lo `test -f 'pngwutil.c' || echo '$(srcdir)/'`pngwutil.c
 
+libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-arm_init.lo: arm/arm_init.c
+@am__fastdepCC_TRUE@	$(LIBTOOL)  --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-arm_init.lo -MD -MP -MF $(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-arm_init.Tpo -c -o libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-arm_init.lo `test -f 'arm/arm_init.c' || echo '$(srcdir)/'`arm/arm_init.c
+@am__fastdepCC_TRUE@	$(am__mv) $(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-arm_init.Tpo $(DEPDIR)/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-arm_init.Plo
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='arm/arm_init.c' object='libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-arm_init.lo' libtool=yes @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(LIBTOOL)  --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la-arm_init.lo `test -f 'arm/arm_init.c' || echo '$(srcdir)/'`arm/arm_init.c
+
+pngvalid.o: contrib/libtests/pngvalid.c
+@am__fastdepCC_TRUE@	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT pngvalid.o -MD -MP -MF $(DEPDIR)/pngvalid.Tpo -c -o pngvalid.o `test -f 'contrib/libtests/pngvalid.c' || echo '$(srcdir)/'`contrib/libtests/pngvalid.c
+@am__fastdepCC_TRUE@	$(am__mv) $(DEPDIR)/pngvalid.Tpo $(DEPDIR)/pngvalid.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='contrib/libtests/pngvalid.c' object='pngvalid.o' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o pngvalid.o `test -f 'contrib/libtests/pngvalid.c' || echo '$(srcdir)/'`contrib/libtests/pngvalid.c
+
+pngvalid.obj: contrib/libtests/pngvalid.c
+@am__fastdepCC_TRUE@	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT pngvalid.obj -MD -MP -MF $(DEPDIR)/pngvalid.Tpo -c -o pngvalid.obj `if test -f 'contrib/libtests/pngvalid.c'; then $(CYGPATH_W) 'contrib/libtests/pngvalid.c'; else $(CYGPATH_W) '$(srcdir)/contrib/libtests/pngvalid.c'; fi`
+@am__fastdepCC_TRUE@	$(am__mv) $(DEPDIR)/pngvalid.Tpo $(DEPDIR)/pngvalid.Po
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='contrib/libtests/pngvalid.c' object='pngvalid.obj' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o pngvalid.obj `if test -f 'contrib/libtests/pngvalid.c'; then $(CYGPATH_W) 'contrib/libtests/pngvalid.c'; else $(CYGPATH_W) '$(srcdir)/contrib/libtests/pngvalid.c'; fi`
+
 mostlyclean-libtool:
 	-rm -f *.lo
 
@@ -671,11 +785,18 @@ distclean-libtool:
 	-rm -f libtool config.lt
 install-man3: $(dist_man_MANS)
 	@$(NORMAL_INSTALL)
-	test -z "$(man3dir)" || $(MKDIR_P) "$(DESTDIR)$(man3dir)"
-	@list=''; test -n "$(man3dir)" || exit 0; \
-	{ for i in $$list; do echo "$$i"; done; \
-	l2='$(dist_man_MANS)'; for i in $$l2; do echo "$$i"; done | \
-	  sed -n '/\.3[a-z]*$$/p'; \
+	@list1=''; \
+	list2='$(dist_man_MANS)'; \
+	test -n "$(man3dir)" \
+	  && test -n "`echo $$list1$$list2`" \
+	  || exit 0; \
+	echo " $(MKDIR_P) '$(DESTDIR)$(man3dir)'"; \
+	$(MKDIR_P) "$(DESTDIR)$(man3dir)" || exit 1; \
+	{ for i in $$list1; do echo "$$i"; done;  \
+	if test -n "$$list2"; then \
+	  for i in $$list2; do echo "$$i"; done \
+	    | sed -n '/\.3[a-z]*$$/p'; \
+	fi; \
 	} | while read p; do \
 	  if test -f $$p; then d=; else d="$(srcdir)/"; fi; \
 	  echo "$$d$$p"; echo "$$p"; \
@@ -704,16 +825,21 @@ uninstall-man3:
 	  sed -n '/\.3[a-z]*$$/p'; \
 	} | sed -e 's,.*/,,;h;s,.*\.,,;s,^[^3][0-9a-z]*$$,3,;x' \
 	      -e 's,\.[0-9a-z]*$$,,;$(transform);G;s,\n,.,'`; \
-	test -z "$$files" || { \
-	  echo " ( cd '$(DESTDIR)$(man3dir)' && rm -f" $$files ")"; \
-	  cd "$(DESTDIR)$(man3dir)" && rm -f $$files; }
+	dir='$(DESTDIR)$(man3dir)'; $(am__uninstall_files_from_dir)
 install-man5: $(dist_man_MANS)
 	@$(NORMAL_INSTALL)
-	test -z "$(man5dir)" || $(MKDIR_P) "$(DESTDIR)$(man5dir)"
-	@list=''; test -n "$(man5dir)" || exit 0; \
-	{ for i in $$list; do echo "$$i"; done; \
-	l2='$(dist_man_MANS)'; for i in $$l2; do echo "$$i"; done | \
-	  sed -n '/\.5[a-z]*$$/p'; \
+	@list1=''; \
+	list2='$(dist_man_MANS)'; \
+	test -n "$(man5dir)" \
+	  && test -n "`echo $$list1$$list2`" \
+	  || exit 0; \
+	echo " $(MKDIR_P) '$(DESTDIR)$(man5dir)'"; \
+	$(MKDIR_P) "$(DESTDIR)$(man5dir)" || exit 1; \
+	{ for i in $$list1; do echo "$$i"; done;  \
+	if test -n "$$list2"; then \
+	  for i in $$list2; do echo "$$i"; done \
+	    | sed -n '/\.5[a-z]*$$/p'; \
+	fi; \
 	} | while read p; do \
 	  if test -f $$p; then d=; else d="$(srcdir)/"; fi; \
 	  echo "$$d$$p"; echo "$$p"; \
@@ -742,13 +868,14 @@ uninstall-man5:
 	  sed -n '/\.5[a-z]*$$/p'; \
 	} | sed -e 's,.*/,,;h;s,.*\.,,;s,^[^5][0-9a-z]*$$,5,;x' \
 	      -e 's,\.[0-9a-z]*$$,,;$(transform);G;s,\n,.,'`; \
-	test -z "$$files" || { \
-	  echo " ( cd '$(DESTDIR)$(man5dir)' && rm -f" $$files ")"; \
-	  cd "$(DESTDIR)$(man5dir)" && rm -f $$files; }
+	dir='$(DESTDIR)$(man5dir)'; $(am__uninstall_files_from_dir)
 install-pkgconfigDATA: $(pkgconfig_DATA)
 	@$(NORMAL_INSTALL)
-	test -z "$(pkgconfigdir)" || $(MKDIR_P) "$(DESTDIR)$(pkgconfigdir)"
 	@list='$(pkgconfig_DATA)'; test -n "$(pkgconfigdir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(pkgconfigdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(pkgconfigdir)" || exit 1; \
+	fi; \
 	for p in $$list; do \
 	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
 	  echo "$$d$$p"; \
@@ -762,13 +889,14 @@ uninstall-pkgconfigDATA:
 	@$(NORMAL_UNINSTALL)
 	@list='$(pkgconfig_DATA)'; test -n "$(pkgconfigdir)" || list=; \
 	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
-	test -n "$$files" || exit 0; \
-	echo " ( cd '$(DESTDIR)$(pkgconfigdir)' && rm -f" $$files ")"; \
-	cd "$(DESTDIR)$(pkgconfigdir)" && rm -f $$files
+	dir='$(DESTDIR)$(pkgconfigdir)'; $(am__uninstall_files_from_dir)
 install-nodist_pkgincludeHEADERS: $(nodist_pkginclude_HEADERS)
 	@$(NORMAL_INSTALL)
-	test -z "$(pkgincludedir)" || $(MKDIR_P) "$(DESTDIR)$(pkgincludedir)"
 	@list='$(nodist_pkginclude_HEADERS)'; test -n "$(pkgincludedir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(pkgincludedir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(pkgincludedir)" || exit 1; \
+	fi; \
 	for p in $$list; do \
 	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
 	  echo "$$d$$p"; \
@@ -782,13 +910,14 @@ uninstall-nodist_pkgincludeHEADERS:
 	@$(NORMAL_UNINSTALL)
 	@list='$(nodist_pkginclude_HEADERS)'; test -n "$(pkgincludedir)" || list=; \
 	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
-	test -n "$$files" || exit 0; \
-	echo " ( cd '$(DESTDIR)$(pkgincludedir)' && rm -f" $$files ")"; \
-	cd "$(DESTDIR)$(pkgincludedir)" && rm -f $$files
+	dir='$(DESTDIR)$(pkgincludedir)'; $(am__uninstall_files_from_dir)
 install-pkgincludeHEADERS: $(pkginclude_HEADERS)
 	@$(NORMAL_INSTALL)
-	test -z "$(pkgincludedir)" || $(MKDIR_P) "$(DESTDIR)$(pkgincludedir)"
 	@list='$(pkginclude_HEADERS)'; test -n "$(pkgincludedir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(pkgincludedir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(pkgincludedir)" || exit 1; \
+	fi; \
 	for p in $$list; do \
 	  if test -f "$$p"; then d=; else d="$(srcdir)/"; fi; \
 	  echo "$$d$$p"; \
@@ -802,9 +931,7 @@ uninstall-pkgincludeHEADERS:
 	@$(NORMAL_UNINSTALL)
 	@list='$(pkginclude_HEADERS)'; test -n "$(pkgincludedir)" || list=; \
 	files=`for p in $$list; do echo $$p; done | sed -e 's|^.*/||'`; \
-	test -n "$$files" || exit 0; \
-	echo " ( cd '$(DESTDIR)$(pkgincludedir)' && rm -f" $$files ")"; \
-	cd "$(DESTDIR)$(pkgincludedir)" && rm -f $$files
+	dir='$(DESTDIR)$(pkgincludedir)'; $(am__uninstall_files_from_dir)
 
 ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
 	list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
@@ -855,8 +982,32 @@ GTAGS:
 	  && $(am__cd) $(top_srcdir) \
 	  && gtags -i $(GTAGS_ARGS) "$$here"
 
+cscope: cscope.files
+	test ! -s cscope.files \
+	  || $(CSCOPE) -b -q $(AM_CSCOPEFLAGS) $(CSCOPEFLAGS) -i cscope.files $(CSCOPE_ARGS)
+
+clean-cscope:
+	-rm -f cscope.files
+
+cscope.files: clean-cscope  cscopelist
+
+cscopelist:  $(HEADERS) $(SOURCES) $(LISP)
+	list='$(SOURCES) $(HEADERS) $(LISP)'; \
+	case "$(srcdir)" in \
+	  [\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \
+	  *) sdir=$(subdir)/$(srcdir) ;; \
+	esac; \
+	for i in $$list; do \
+	  if test -f "$$i"; then \
+	    echo "$(subdir)/$$i"; \
+	  else \
+	    echo "$$sdir/$$i"; \
+	  fi; \
+	done >> $(top_builddir)/cscope.files
+
 distclean-tags:
 	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
+	-rm -f cscope.out cscope.in.out cscope.po.out cscope.files
 
 check-TESTS: $(TESTS)
 	@failed=0; all=0; xfail=0; xpass=0; skip=0; \
@@ -868,7 +1019,7 @@ check-TESTS: $(TESTS)
 	    if test -f ./$$tst; then dir=./; \
 	    elif test -f $$tst; then dir=; \
 	    else dir="$(srcdir)/"; fi; \
-	    if $(TESTS_ENVIRONMENT) $${dir}$$tst; then \
+	    if $(TESTS_ENVIRONMENT) $${dir}$$tst $(AM_TESTS_FD_REDIRECT); then \
 	      all=`expr $$all + 1`; \
 	      case " $(XFAIL_TESTS) " in \
 	      *[\ \	]$$tst[\ \	]*) \
@@ -939,14 +1090,15 @@ check-TESTS: $(TESTS)
 	  fi; \
 	  dashes=`echo "$$dashes" | sed s/./=/g`; \
 	  if test "$$failed" -eq 0; then \
-	    echo "$$grn$$dashes"; \
+	    col="$$grn"; \
 	  else \
-	    echo "$$red$$dashes"; \
+	    col="$$red"; \
 	  fi; \
-	  echo "$$banner"; \
-	  test -z "$$skipped" || echo "$$skipped"; \
-	  test -z "$$report" || echo "$$report"; \
-	  echo "$$dashes$$std"; \
+	  echo "$${col}$$dashes$${std}"; \
+	  echo "$${col}$$banner$${std}"; \
+	  test -z "$$skipped" || echo "$${col}$$skipped$${std}"; \
+	  test -z "$$report" || echo "$${col}$$report$${std}"; \
+	  echo "$${col}$$dashes$${std}"; \
 	  test "$$failed" -eq 0; \
 	else :; fi
 
@@ -957,10 +1109,10 @@ distdir: $(DISTFILES)
 	    if test -f "$$d$$p"; then echo "$$d$$p"; else :; fi; done`; \
 	  if test -n "$$list" && \
 	    grep 'ab help2man is required to generate this page' $$list >/dev/null; then \
-	    echo "error: found man pages containing the \`missing help2man' replacement text:" >&2; \
+	    echo "error: found man pages containing the 'missing help2man' replacement text:" >&2; \
 	    grep -l 'ab help2man is required to generate this page' $$list | sed 's/^/         /' >&2; \
 	    echo "       to fix them, install help2man, remove and regenerate the man pages;" >&2; \
-	    echo "       typically \`make maintainer-clean' will remove them" >&2; \
+	    echo "       typically 'make maintainer-clean' will remove them" >&2; \
 	    exit 1; \
 	  else :; fi; \
 	else :; fi
@@ -1007,36 +1159,36 @@ distdir: $(DISTFILES)
 	|| chmod -R a+r "$(distdir)"
 dist-gzip: distdir
 	tardir=$(distdir) && $(am__tar) | GZIP=$(GZIP_ENV) gzip -c >$(distdir).tar.gz
-	$(am__remove_distdir)
+	$(am__post_remove_distdir)
 
 dist-bzip2: distdir
-	tardir=$(distdir) && $(am__tar) | bzip2 -9 -c >$(distdir).tar.bz2
-	$(am__remove_distdir)
+	tardir=$(distdir) && $(am__tar) | BZIP2=$${BZIP2--9} bzip2 -c >$(distdir).tar.bz2
+	$(am__post_remove_distdir)
 
-dist-lzma: distdir
-	tardir=$(distdir) && $(am__tar) | lzma -9 -c >$(distdir).tar.lzma
-	$(am__remove_distdir)
+dist-lzip: distdir
+	tardir=$(distdir) && $(am__tar) | lzip -c $${LZIP_OPT--9} >$(distdir).tar.lz
+	$(am__post_remove_distdir)
 
 dist-xz: distdir
-	tardir=$(distdir) && $(am__tar) | xz -c >$(distdir).tar.xz
-	$(am__remove_distdir)
+	tardir=$(distdir) && $(am__tar) | XZ_OPT=$${XZ_OPT--e} xz -c >$(distdir).tar.xz
+	$(am__post_remove_distdir)
 
 dist-tarZ: distdir
 	tardir=$(distdir) && $(am__tar) | compress -c >$(distdir).tar.Z
-	$(am__remove_distdir)
+	$(am__post_remove_distdir)
 
 dist-shar: distdir
 	shar $(distdir) | GZIP=$(GZIP_ENV) gzip -c >$(distdir).shar.gz
-	$(am__remove_distdir)
+	$(am__post_remove_distdir)
 
 dist-zip: distdir
 	-rm -f $(distdir).zip
 	zip -rq $(distdir).zip $(distdir)
-	$(am__remove_distdir)
+	$(am__post_remove_distdir)
 
-dist dist-all: distdir
-	tardir=$(distdir) && $(am__tar) | GZIP=$(GZIP_ENV) gzip -c >$(distdir).tar.gz
-	$(am__remove_distdir)
+dist dist-all:
+	$(MAKE) $(AM_MAKEFLAGS) $(DIST_TARGETS) am__post_remove_distdir='@:'
+	$(am__post_remove_distdir)
 
 # This target untars the dist file and tries a VPATH configuration.  Then
 # it guarantees that the distribution is self-contained by making another
@@ -1047,8 +1199,8 @@ distcheck: dist
 	  GZIP=$(GZIP_ENV) gzip -dc $(distdir).tar.gz | $(am__untar) ;;\
 	*.tar.bz2*) \
 	  bzip2 -dc $(distdir).tar.bz2 | $(am__untar) ;;\
-	*.tar.lzma*) \
-	  lzma -dc $(distdir).tar.lzma | $(am__untar) ;;\
+	*.tar.lz*) \
+	  lzip -dc $(distdir).tar.lz | $(am__untar) ;;\
 	*.tar.xz*) \
 	  xz -dc $(distdir).tar.xz | $(am__untar) ;;\
 	*.tar.Z*) \
@@ -1058,9 +1210,9 @@ distcheck: dist
 	*.zip*) \
 	  unzip $(distdir).zip ;;\
 	esac
-	chmod -R a-w $(distdir); chmod a+w $(distdir)
-	mkdir $(distdir)/_build
-	mkdir $(distdir)/_inst
+	chmod -R a-w $(distdir)
+	chmod u+w $(distdir)
+	mkdir $(distdir)/_build $(distdir)/_inst
 	chmod a-w $(distdir)
 	test -d $(distdir)/_build || exit 0; \
 	dc_install_base=`$(am__cd) $(distdir)/_inst && pwd | sed -e 's,^[^:\\/]:[\\/],/,'` \
@@ -1068,6 +1220,7 @@ distcheck: dist
 	  && am__cwd=`pwd` \
 	  && $(am__cd) $(distdir)/_build \
 	  && ../configure --srcdir=.. --prefix="$$dc_install_base" \
+	    $(AM_DISTCHECK_CONFIGURE_FLAGS) \
 	    $(DISTCHECK_CONFIGURE_FLAGS) \
 	  && $(MAKE) $(AM_MAKEFLAGS) \
 	  && $(MAKE) $(AM_MAKEFLAGS) dvi \
@@ -1091,13 +1244,21 @@ distcheck: dist
 	  && $(MAKE) $(AM_MAKEFLAGS) distcleancheck \
 	  && cd "$$am__cwd" \
 	  || exit 1
-	$(am__remove_distdir)
+	$(am__post_remove_distdir)
 	@(echo "$(distdir) archives ready for distribution: "; \
 	  list='$(DIST_ARCHIVES)'; for i in $$list; do echo $$i; done) | \
 	  sed -e 1h -e 1s/./=/g -e 1p -e 1x -e '$$p' -e '$$x'
 distuninstallcheck:
-	@$(am__cd) '$(distuninstallcheck_dir)' \
-	&& test `$(distuninstallcheck_listfiles) | wc -l` -le 1 \
+	@test -n '$(distuninstallcheck_dir)' || { \
+	  echo 'ERROR: trying to run $@ with an empty' \
+	       '$$(distuninstallcheck_dir)' >&2; \
+	  exit 1; \
+	}; \
+	$(am__cd) '$(distuninstallcheck_dir)' || { \
+	  echo 'ERROR: cannot chdir into $(distuninstallcheck_dir)' >&2; \
+	  exit 1; \
+	}; \
+	test `$(am__distuninstallcheck_listfiles) | wc -l` -eq 0 \
 	   || { echo "ERROR: files left after uninstall:" ; \
 	        if test -n "$(DESTDIR)"; then \
 	          echo "  (check DESTDIR support)"; \
@@ -1133,10 +1294,15 @@ install-am: all-am
 
 installcheck: installcheck-am
 install-strip:
-	$(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
-	  install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
-	  `test -z '$(STRIP)' || \
-	    echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
 mostlyclean-generic:
 
 clean-generic:
@@ -1236,13 +1402,14 @@ uninstall-man: uninstall-man3 uninstall-man5
 	install-strip uninstall-am
 
 .PHONY: CTAGS GTAGS all all-am am--refresh check check-TESTS check-am \
-	clean clean-checkPROGRAMS clean-generic clean-libLTLIBRARIES \
-	clean-libtool ctags dist dist-all dist-bzip2 dist-gzip \
-	dist-hook dist-lzma dist-shar dist-tarZ dist-xz dist-zip \
-	distcheck distclean distclean-compile distclean-generic \
-	distclean-hdr distclean-libtool distclean-tags distcleancheck \
-	distdir distuninstallcheck dvi dvi-am html html-am info \
-	info-am install install-am install-binSCRIPTS install-data \
+	clean clean-checkPROGRAMS clean-cscope clean-generic \
+	clean-libLTLIBRARIES clean-libtool cscope cscopelist ctags \
+	dist dist-all dist-bzip2 dist-gzip dist-hook dist-lzip \
+	dist-shar dist-tarZ dist-xz dist-zip distcheck distclean \
+	distclean-compile distclean-generic distclean-hdr \
+	distclean-libtool distclean-tags distcleancheck distdir \
+	distuninstallcheck dvi dvi-am html html-am info info-am \
+	install install-am install-binSCRIPTS install-data \
 	install-data-am install-data-hook install-dvi install-dvi-am \
 	install-exec install-exec-am install-exec-hook install-html \
 	install-html-am install-info install-info-am \
@@ -1286,7 +1453,7 @@ $(srcdir)/scripts/pnglibconf.h.prebuilt:
 # The following is necessary to ensure that the local pnglibconf.h is used, not
 # an installed one (this can happen immediately after on a clean system if
 # 'make test' is the first thing the user does.)
-pngvalid.o pngtest.o: pnglibconf.h
+contrib/libtests/pngvalid.o pngtest.o: pnglibconf.h
 
 .dfn.out:
 	rm -f $@ dfn.c dfn?.out
@@ -1294,17 +1461,18 @@ pngvalid.o pngtest.o: pnglibconf.h
 	echo '#include "$<"' >dfn.c
 	$(DFNCPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) @LIBPNG_DEFINES@\
 	    $(CPPFLAGS) $(SYMBOL_CFLAGS) dfn.c > dfn1.out
-	$(SED) -n -e 's|^.*PNG_DEFN_MAGIC-\(.*\)-PNG_DEFN_END.*$$|\1|p'\
+	$(SED) -n -e 's|^.*PNG_DEFN_MAGIC *-\(.*\)- *PNG_DEFN_END.*$$|\1|p'\
 	    dfn1.out >dfn2.out
-	$(SED) -e 's| *@@@ *||g' -e 's| *$$||' dfn2.out >dfn3.out
+	$(SED) -e 's| *PNG_JOIN *||g' -e 's| *$$||' dfn2.out >dfn3.out
 	rm -f dfn.c dfn[12].out
 	mv dfn3.out $@
 
 # The .dfn file for pnglibconf.h is machine generated
-pnglibconf.dfn: scripts/pnglibconf.dfa scripts/options.awk
+pnglibconf.dfn: scripts/pnglibconf.dfa scripts/options.awk pngconf.h pngusr.dfa $(DFA_XTRA)
 	rm -f $@ dfn?.out
-	$(AWK) -f ${srcdir}/scripts/options.awk out=dfn1.out\
-	    ${srcdir}/scripts/pnglibconf.dfa $(DFA_XTRA) 1>&2
+	$(AWK) -f ${srcdir}/scripts/options.awk out=dfn1.out version=search\
+	    ${srcdir}/pngconf.h ${srcdir}/scripts/pnglibconf.dfa\
+	    ${srcdir}/pngusr.dfa $(DFA_XTRA) 1>&2
 	$(AWK) -f ${srcdir}/scripts/options.awk out=dfn2.out dfn1.out 1>&2
 	rm dfn1.out
 	mv dfn2.out $@
@@ -1319,12 +1487,13 @@ scripts/symbols.chk: scripts/checksym.awk scripts/symbols.def scripts/symbols.ou
 
 # used on demand to regenerate the standard header, CPPFLAGS should
 # be empty - no non-standard defines
-scripts/pnglibconf.dfn: scripts/pnglibconf.dfa scripts/options.awk
+scripts/pnglibconf.dfn: scripts/pnglibconf.dfa scripts/options.awk pngconf.h
 	rm -f $@ dfn?.out
 	test -z "$(CPPFLAGS)"
 	echo "com @PNGLIB_VERSION@ STANDARD API DEFINITION" |\
-	$(AWK) -f ${srcdir}/scripts/options.awk out=dfn1.out\
-	    logunsupported=1 - ${srcdir}/scripts/pnglibconf.dfa 1>&2
+	$(AWK) -f ${srcdir}/scripts/options.awk out=dfn1.out logunsupported=1
+		version=search ${srcdir}/pngconf.h -\
+		${srcdir}/scripts/pnglibconf.dfa 1>&2
 	$(AWK) -f ${srcdir}/scripts/options.awk out=dfn2.out dfn1.out 1>&2
 	rm dfn1.out
 	mv dfn2.out $@
@@ -1343,22 +1512,24 @@ dist-hook:
 
 # install the .../include headers as links to the new ones
 install-data-hook:
-	cd $(DESTDIR)$(includedir); rm -f png.h pngconf.h pnglibconf.h
-	cd $(DESTDIR)$(includedir); $(LN_S) $(PNGLIB_BASENAME)/png.h png.h
-	cd $(DESTDIR)$(includedir); $(LN_S) $(PNGLIB_BASENAME)/pngconf.h \
+	cd '$(DESTDIR)$(includedir)'; rm -f png.h pngconf.h pnglibconf.h
+	cd '$(DESTDIR)$(includedir)'; $(LN_S) $(PNGLIB_BASENAME)/png.h png.h
+	cd '$(DESTDIR)$(includedir)'; $(LN_S) $(PNGLIB_BASENAME)/pngconf.h \
 		pngconf.h
-	cd $(DESTDIR)$(includedir); $(LN_S) $(PNGLIB_BASENAME)/pnglibconf.h \
+	cd '$(DESTDIR)$(includedir)'; $(LN_S) $(PNGLIB_BASENAME)/pnglibconf.h \
 		pnglibconf.h
-	cd $(DESTDIR)$(pkgconfigdir); rm -f libpng.pc
-	cd $(DESTDIR)$(pkgconfigdir); $(LN_S) $(PNGLIB_BASENAME).pc libpng.pc
+	cd '$(DESTDIR)$(pkgconfigdir)'; rm -f libpng.pc
+	cd '$(DESTDIR)$(pkgconfigdir)'; $(LN_S) $(PNGLIB_BASENAME).pc libpng.pc
 
 # do evil things to libpng to cause libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@ to be used
 install-exec-hook:
-	cd $(DESTDIR)$(bindir); rm -f libpng-config
-	cd $(DESTDIR)$(bindir); $(LN_S) $(PNGLIB_BASENAME)-config libpng-config
+	cd '$(DESTDIR)$(bindir)'; rm -f libpng-config
+	cd '$(DESTDIR)$(bindir)';\
+	   $(LN_S) $(PNGLIB_BASENAME)-config libpng-config
 	@set -x;\
-	cd $(DESTDIR)$(libdir);\
-	for ext in a la so so.@PNGLIB_MAJOR@@PNGLIB_MINOR@.@PNGLIB_RELEASE@ sl dylib dll.a; do\
+	cd '$(DESTDIR)$(libdir)';\
+	for ext in a la so so.@PNGLIB_MAJOR@@PNGLIB_MINOR@.@PNGLIB_RELEASE@\
+	   sl dylib dll.a; do\
 		rm -f libpng.$$ext;\
                 if test -f $(PNGLIB_BASENAME).$$ext; then\
                        $(LN_S) $(PNGLIB_BASENAME).$$ext libpng.$$ext;\
@@ -1366,11 +1537,16 @@ install-exec-hook:
 	done
 
 uninstall-hook:
-	cd $(DESTDIR)$(includedir); rm -f png.h pngconf.h pnglibconf.h
-	rm -f $(DESTDIR)$(pkgconfigdir)/libpng.pc
-	rm -f $(DESTDIR)$(bindir)/libpng-config
-	rm -f $(DESTDIR)$(libdir)/libpng.a
-	rm -f $(DESTDIR)$(libdir)/libpng.la
+	cd '$(DESTDIR)$(includedir)'; rm -f png.h pngconf.h pnglibconf.h
+	rm -f '$(DESTDIR)$(pkgconfigdir)/libpng.pc'
+	rm -f '$(DESTDIR)$(bindir)/libpng-config'
+	rm -f '$(DESTDIR)$(libdir)/libpng.a'
+	rm -f '$(DESTDIR)$(libdir)/libpng.la'
+	rm -f '$(DESTDIR)$(libdir)/libpng.so'
+	rm -f '$(DESTDIR)$(libdir)/libpng.so.@PNGLIB_MAJOR@@PNGLIB_MINOR@.@PNGLIB_RELEASE@'
+	rm -f '$(DESTDIR)$(libdir)/libpng.sl'
+	rm -f '$(DESTDIR)$(libdir)/libpng.dylib'
+	rm -f '$(DESTDIR)$(libdir)/libpng.dll.a'
 
 # Tell versions [3.59,3.63) of GNU make to not export all variables.
 # Otherwise a system limit (for SysV at least) may be exceeded.

README

@@ -1,4 +1,4 @@
-README for libpng version 1.5.6beta03 - September 28, 2011 (shared library 15.0)
+README for libpng version 1.5.14rc01 - January 17, 2013 (shared library 15.0)
 See the note about version numbers near the top of png.h
 
 See INSTALL for instructions on how to install libpng.

arm/arm_init.c

@@ -0,0 +1,86 @@
+
+/* arm_init.c - NEON optimised filter functions
+ *
+ * Copyright (c) 2012 Glenn Randers-Pehrson
+ * Written by Mans Rullgard, 2011.
+ * Last changed in libpng 1.5.14 [(PENDING RELEASE)]
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ */
+#include "../pngpriv.h"
+
+/* __arm__ is defined by GCC, MSVC defines _M_ARM to the ARM version number */
+#if defined __linux__ && defined __arm__
+#include <stdio.h>
+#include <elf.h>
+#include <asm/hwcap.h>
+
+static int png_have_hwcap(unsigned cap)
+{
+   FILE *f = fopen("/proc/self/auxv", "r");
+   Elf32_auxv_t aux;
+   int have_cap = 0;
+
+   if (!f)
+      return 0;
+
+   while (fread(&aux, sizeof(aux), 1, f) > 0)
+   {
+      if (aux.a_type == AT_HWCAP &&
+          aux.a_un.a_val & cap)
+      {
+         have_cap = 1;
+         break;
+      }
+   }
+
+   fclose(f);
+
+   return have_cap;
+}
+#endif /* __linux__ && __arm__ */
+
+void
+png_init_filter_functions_neon(png_structp pp, unsigned int bpp)
+{
+#ifdef __arm__
+#ifdef __linux__
+   if (!png_have_hwcap(HWCAP_NEON))
+      return;
+#endif
+
+   /* IMPORTANT: any new external functions used here must be declared using
+    * PNG_INTERNAL_FUNCTION in ../pngpriv.h.  This is required so that the
+    * 'prefix' option to configure works:
+    *
+    *    ./configure --with-libpng-prefix=foobar_
+    *
+    * Verify you have got this right by running the above command, doing a build
+    * and examining pngprefix.h; it must contain a #define for every external
+    * function you add.  (Notice that this happens automatically for the
+    * initialization function.)
+    */
+   pp->read_filter[PNG_FILTER_VALUE_UP-1] = png_read_filter_row_up_neon;
+
+   if (bpp == 3)
+   {
+      pp->read_filter[PNG_FILTER_VALUE_SUB-1] = png_read_filter_row_sub3_neon;
+      pp->read_filter[PNG_FILTER_VALUE_AVG-1] = png_read_filter_row_avg3_neon;
+      pp->read_filter[PNG_FILTER_VALUE_PAETH-1] =
+         png_read_filter_row_paeth3_neon;
+   }
+
+   else if (bpp == 4)
+   {
+      pp->read_filter[PNG_FILTER_VALUE_SUB-1] = png_read_filter_row_sub4_neon;
+      pp->read_filter[PNG_FILTER_VALUE_AVG-1] = png_read_filter_row_avg4_neon;
+      pp->read_filter[PNG_FILTER_VALUE_PAETH-1] =
+          png_read_filter_row_paeth4_neon;
+   }
+#else
+   PNG_UNUSED(pp)
+   PNG_UNUSED(bpp)
+#endif
+}

arm/filter_neon.S

@@ -0,0 +1,228 @@
+
+/* filter_neon.S - NEON optimised filter functions
+ *
+ * Copyright (c) 2011 Glenn Randers-Pehrson
+ * Written by Mans Rullgard, 2011.
+ * Last changed in libpng 1.5.7 [December 15, 2011]
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ */
+
+#ifdef __arm__
+#if defined(__linux__) && defined(__ELF__)
+.section .note.GNU-stack,"",%progbits /* mark stack as non-executable */
+#endif
+
+#ifdef __ELF__
+#   define ELF
+#else
+#   define ELF @
+#endif
+
+        .arch armv7-a
+        .fpu  neon
+
+.macro  func    name, export=0
+    .macro endfunc
+ELF     .size   \name, . - \name
+        .endfunc
+        .purgem endfunc
+    .endm
+        .text
+    .if \export
+        .global \name
+    .endif
+ELF     .type   \name, STT_FUNC
+        .func   \name
+\name:
+.endm
+
+func    png_read_filter_row_sub4_neon, export=1
+        ldr             r3,  [r0, #4]           @ rowbytes
+        vmov.i8         d3,  #0
+1:
+        vld4.32         {d4[],d5[],d6[],d7[]},    [r1,:128]
+        vadd.u8         d0,  d3,  d4
+        vadd.u8         d1,  d0,  d5
+        vadd.u8         d2,  d1,  d6
+        vadd.u8         d3,  d2,  d7
+        vst4.32         {d0[0],d1[0],d2[0],d3[0]},[r1,:128]!
+        subs            r3,  r3,  #16
+        bgt             1b
+
+        bx              lr
+endfunc
+
+func    png_read_filter_row_sub3_neon, export=1
+        ldr             r3,  [r0, #4]           @ rowbytes
+        vmov.i8         d3,  #0
+        mov             r0,  r1
+        mov             r2,  #3
+        mov             r12, #12
+        vld1.8          {q11},    [r0], r12
+1:
+        vext.8          d5,  d22, d23, #3
+        vadd.u8         d0,  d3,  d22
+        vext.8          d6,  d22, d23, #6
+        vadd.u8         d1,  d0,  d5
+        vext.8          d7,  d23, d23, #1
+        vld1.8          {q11},    [r0], r12
+        vst1.32         {d0[0]},  [r1,:32], r2
+        vadd.u8         d2,  d1,  d6
+        vst1.32         {d1[0]},  [r1], r2
+        vadd.u8         d3,  d2,  d7
+        vst1.32         {d2[0]},  [r1], r2
+        vst1.32         {d3[0]},  [r1], r2
+        subs            r3,  r3,  #12
+        bgt             1b
+
+        bx              lr
+endfunc
+
+func    png_read_filter_row_up_neon, export=1
+        ldr             r3,  [r0, #4]           @ rowbytes
+1:
+        vld1.8          {q0}, [r1,:128]
+        vld1.8          {q1}, [r2,:128]!
+        vadd.u8         q0,  q0,  q1
+        vst1.8          {q0}, [r1,:128]!
+        subs            r3,  r3,  #16
+        bgt             1b
+
+        bx              lr
+endfunc
+
+func    png_read_filter_row_avg4_neon, export=1
+        ldr             r12, [r0, #4]           @ rowbytes
+        vmov.i8         d3,  #0
+1:
+        vld4.32         {d4[],d5[],d6[],d7[]},    [r1,:128]
+        vld4.32         {d16[],d17[],d18[],d19[]},[r2,:128]!
+        vhadd.u8        d0,  d3,  d16
+        vadd.u8         d0,  d0,  d4
+        vhadd.u8        d1,  d0,  d17
+        vadd.u8         d1,  d1,  d5
+        vhadd.u8        d2,  d1,  d18
+        vadd.u8         d2,  d2,  d6
+        vhadd.u8        d3,  d2,  d19
+        vadd.u8         d3,  d3,  d7
+        vst4.32         {d0[0],d1[0],d2[0],d3[0]},[r1,:128]!
+        subs            r12, r12, #16
+        bgt             1b
+
+        bx              lr
+endfunc
+
+func    png_read_filter_row_avg3_neon, export=1
+        push            {r4,lr}
+        ldr             r12, [r0, #4]           @ rowbytes
+        vmov.i8         d3,  #0
+        mov             r0,  r1
+        mov             r4,  #3
+        mov             lr,  #12
+        vld1.8          {q11},    [r0], lr
+1:
+        vld1.8          {q10},    [r2], lr
+        vext.8          d5,  d22, d23, #3
+        vhadd.u8        d0,  d3,  d20
+        vext.8          d17, d20, d21, #3
+        vadd.u8         d0,  d0,  d22
+        vext.8          d6,  d22, d23, #6
+        vhadd.u8        d1,  d0,  d17
+        vext.8          d18, d20, d21, #6
+        vadd.u8         d1,  d1,  d5
+        vext.8          d7,  d23, d23, #1
+        vld1.8          {q11},    [r0], lr
+        vst1.32         {d0[0]},  [r1,:32], r4
+        vhadd.u8        d2,  d1,  d18
+        vst1.32         {d1[0]},  [r1], r4
+        vext.8          d19, d21, d21, #1
+        vadd.u8         d2,  d2,  d6
+        vhadd.u8        d3,  d2,  d19
+        vst1.32         {d2[0]},  [r1], r4
+        vadd.u8         d3,  d3,  d7
+        vst1.32         {d3[0]},  [r1], r4
+        subs            r12, r12, #12
+        bgt             1b
+
+        pop             {r4,pc}
+endfunc
+
+.macro  paeth           rx,  ra,  rb,  rc
+        vaddl.u8        q12, \ra, \rb           @ a + b
+        vaddl.u8        q15, \rc, \rc           @ 2*c
+        vabdl.u8        q13, \rb, \rc           @ pa
+        vabdl.u8        q14, \ra, \rc           @ pb
+        vabd.u16        q15, q12, q15           @ pc
+        vcle.u16        q12, q13, q14           @ pa <= pb
+        vcle.u16        q13, q13, q15           @ pa <= pc
+        vcle.u16        q14, q14, q15           @ pb <= pc
+        vand            q12, q12, q13           @ pa <= pb && pa <= pc
+        vmovn.u16       d28, q14
+        vmovn.u16       \rx, q12
+        vbsl            d28, \rb, \rc
+        vbsl            \rx, \ra, d28
+.endm
+
+func    png_read_filter_row_paeth4_neon, export=1
+        ldr             r12, [r0, #4]           @ rowbytes
+        vmov.i8         d3,  #0
+        vmov.i8         d20, #0
+1:
+        vld4.32         {d4[],d5[],d6[],d7[]},    [r1,:128]
+        vld4.32         {d16[],d17[],d18[],d19[]},[r2,:128]!
+        paeth           d0,  d3,  d16, d20
+        vadd.u8         d0,  d0,  d4
+        paeth           d1,  d0,  d17, d16
+        vadd.u8         d1,  d1,  d5
+        paeth           d2,  d1,  d18, d17
+        vadd.u8         d2,  d2,  d6
+        paeth           d3,  d2,  d19, d18
+        vmov            d20, d19
+        vadd.u8         d3,  d3,  d7
+        vst4.32         {d0[0],d1[0],d2[0],d3[0]},[r1,:128]!
+        subs            r12, r12, #16
+        bgt             1b
+
+        bx              lr
+endfunc
+
+func    png_read_filter_row_paeth3_neon, export=1
+        push            {r4,lr}
+        ldr             r12, [r0, #4]           @ rowbytes
+        vmov.i8         d3,  #0
+        vmov.i8         d4,  #0
+        mov             r0,  r1
+        mov             r4,  #3
+        mov             lr,  #12
+        vld1.8          {q11},    [r0], lr
+1:
+        vld1.8          {q10},    [r2], lr
+        paeth           d0,  d3,  d20, d4
+        vext.8          d5,  d22, d23, #3
+        vadd.u8         d0,  d0,  d22
+        vext.8          d17, d20, d21, #3
+        paeth           d1,  d0,  d17, d20
+        vst1.32         {d0[0]},  [r1,:32], r4
+        vext.8          d6,  d22, d23, #6
+        vadd.u8         d1,  d1,  d5
+        vext.8          d18, d20, d21, #6
+        paeth           d2,  d1,  d18, d17
+        vext.8          d7,  d23, d23, #1
+        vld1.8          {q11},    [r0], lr
+        vst1.32         {d1[0]},  [r1], r4
+        vadd.u8         d2,  d2,  d6
+        vext.8          d19, d21, d21, #1
+        paeth           d3,  d2,  d19, d18
+        vst1.32         {d2[0]},  [r1], r4
+        vmov            d4,  d19
+        vadd.u8         d3,  d3,  d7
+        vst1.32         {d3[0]},  [r1], r4
+        subs            r12, r12, #12
+        bgt             1b
+
+        pop             {r4,pc}
+endfunc
+#endif

config.guess

@@ -1,10 +1,10 @@
 #! /bin/sh
 # Attempt to guess a canonical system name.
 #   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
-#   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
-#   Free Software Foundation, Inc.
+#   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
+#   2011, 2012 Free Software Foundation, Inc.
 
-timestamp='2009-11-20'
+timestamp='2012-09-25'
 
 # 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
@@ -17,9 +17,7 @@ timestamp='2009-11-20'
 # 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
@@ -56,8 +54,9 @@ version="\
 GNU config.guess ($timestamp)
 
 Originally written by Per Bothner.
-Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
-2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
+2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
+Free Software Foundation, Inc.
 
 This is free software; see the source for copying conditions.  There is NO
 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
@@ -144,7 +143,7 @@ UNAME_VERSION=`(uname -v) 2>/dev/null` || UNAME_VERSION=unknown
 case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
     *:NetBSD:*:*)
 	# NetBSD (nbsd) targets should (where applicable) match one or
-	# more of the tupples: *-*-netbsdelf*, *-*-netbsdaout*,
+	# more of the tuples: *-*-netbsdelf*, *-*-netbsdaout*,
 	# *-*-netbsdecoff* and *-*-netbsd*.  For targets that recently
 	# switched to ELF, *-*-netbsd* would select the old
 	# object file format.  This provides both forward
@@ -180,7 +179,7 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
 		fi
 		;;
 	    *)
-	        os=netbsd
+		os=netbsd
 		;;
 	esac
 	# The OS release
@@ -201,6 +200,10 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
 	# CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM is used.
 	echo "${machine}-${os}${release}"
 	exit ;;
+    *:Bitrig:*:*)
+	UNAME_MACHINE_ARCH=`arch | sed 's/Bitrig.//'`
+	echo ${UNAME_MACHINE_ARCH}-unknown-bitrig${UNAME_RELEASE}
+	exit ;;
     *:OpenBSD:*:*)
 	UNAME_MACHINE_ARCH=`arch | sed 's/OpenBSD.//'`
 	echo ${UNAME_MACHINE_ARCH}-unknown-openbsd${UNAME_RELEASE}
@@ -223,7 +226,7 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
 		UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $3}'`
 		;;
 	*5.*)
-	        UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $4}'`
+		UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $4}'`
 		;;
 	esac
 	# According to Compaq, /usr/sbin/psrinfo has been available on
@@ -269,7 +272,10 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
 	# A Xn.n version is an unreleased experimental baselevel.
 	# 1.2 uses "1.2" for uname -r.
 	echo ${UNAME_MACHINE}-dec-osf`echo ${UNAME_RELEASE} | sed -e 's/^[PVTX]//' | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'`
-	exit ;;
+	# Reset EXIT trap before exiting to avoid spurious non-zero exit code.
+	exitcode=$?
+	trap '' 0
+	exit $exitcode ;;
     Alpha\ *:Windows_NT*:*)
 	# How do we know it's Interix rather than the generic POSIX subsystem?
 	# Should we change UNAME_MACHINE based on the output of uname instead
@@ -295,12 +301,12 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
 	echo s390-ibm-zvmoe
 	exit ;;
     *:OS400:*:*)
-        echo powerpc-ibm-os400
+	echo powerpc-ibm-os400
 	exit ;;
     arm:RISC*:1.[012]*:*|arm:riscix:1.[012]*:*)
 	echo arm-acorn-riscix${UNAME_RELEASE}
 	exit ;;
-    arm:riscos:*:*|arm:RISCOS:*:*)
+    arm*:riscos:*:*|arm*:RISCOS:*:*)
 	echo arm-unknown-riscos
 	exit ;;
     SR2?01:HI-UX/MPP:*:* | SR8000:HI-UX/MPP:*:*)
@@ -394,23 +400,23 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
     # MiNT.  But MiNT is downward compatible to TOS, so this should
     # be no problem.
     atarist[e]:*MiNT:*:* | atarist[e]:*mint:*:* | atarist[e]:*TOS:*:*)
-        echo m68k-atari-mint${UNAME_RELEASE}
+	echo m68k-atari-mint${UNAME_RELEASE}
 	exit ;;
     atari*:*MiNT:*:* | atari*:*mint:*:* | atarist[e]:*TOS:*:*)
 	echo m68k-atari-mint${UNAME_RELEASE}
-        exit ;;
+	exit ;;
     *falcon*:*MiNT:*:* | *falcon*:*mint:*:* | *falcon*:*TOS:*:*)
-        echo m68k-atari-mint${UNAME_RELEASE}
+	echo m68k-atari-mint${UNAME_RELEASE}
 	exit ;;
     milan*:*MiNT:*:* | milan*:*mint:*:* | *milan*:*TOS:*:*)
-        echo m68k-milan-mint${UNAME_RELEASE}
-        exit ;;
+	echo m68k-milan-mint${UNAME_RELEASE}
+	exit ;;
     hades*:*MiNT:*:* | hades*:*mint:*:* | *hades*:*TOS:*:*)
-        echo m68k-hades-mint${UNAME_RELEASE}
-        exit ;;
+	echo m68k-hades-mint${UNAME_RELEASE}
+	exit ;;
     *:*MiNT:*:* | *:*mint:*:* | *:*TOS:*:*)
-        echo m68k-unknown-mint${UNAME_RELEASE}
-        exit ;;
+	echo m68k-unknown-mint${UNAME_RELEASE}
+	exit ;;
     m68k:machten:*:*)
 	echo m68k-apple-machten${UNAME_RELEASE}
 	exit ;;
@@ -480,8 +486,8 @@ EOF
 	echo m88k-motorola-sysv3
 	exit ;;
     AViiON:dgux:*:*)
-        # DG/UX returns AViiON for all architectures
-        UNAME_PROCESSOR=`/usr/bin/uname -p`
+	# DG/UX returns AViiON for all architectures
+	UNAME_PROCESSOR=`/usr/bin/uname -p`
 	if [ $UNAME_PROCESSOR = mc88100 ] || [ $UNAME_PROCESSOR = mc88110 ]
 	then
 	    if [ ${TARGET_BINARY_INTERFACE}x = m88kdguxelfx ] || \
@@ -494,7 +500,7 @@ EOF
 	else
 	    echo i586-dg-dgux${UNAME_RELEASE}
 	fi
- 	exit ;;
+	exit ;;
     M88*:DolphinOS:*:*)	# DolphinOS (SVR3)
 	echo m88k-dolphin-sysv3
 	exit ;;
@@ -551,7 +557,7 @@ EOF
 		echo rs6000-ibm-aix3.2
 	fi
 	exit ;;
-    *:AIX:*:[456])
+    *:AIX:*:[4567])
 	IBM_CPU_ID=`/usr/sbin/lsdev -C -c processor -S available | sed 1q | awk '{ print $1 }'`
 	if /usr/sbin/lsattr -El ${IBM_CPU_ID} | grep ' POWER' >/dev/null 2>&1; then
 		IBM_ARCH=rs6000
@@ -594,52 +600,52 @@ EOF
 	    9000/[678][0-9][0-9])
 		if [ -x /usr/bin/getconf ]; then
 		    sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null`
-                    sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null`
-                    case "${sc_cpu_version}" in
-                      523) HP_ARCH="hppa1.0" ;; # CPU_PA_RISC1_0
-                      528) HP_ARCH="hppa1.1" ;; # CPU_PA_RISC1_1
-                      532)                      # CPU_PA_RISC2_0
-                        case "${sc_kernel_bits}" in
-                          32) HP_ARCH="hppa2.0n" ;;
-                          64) HP_ARCH="hppa2.0w" ;;
+		    sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null`
+		    case "${sc_cpu_version}" in
+		      523) HP_ARCH="hppa1.0" ;; # CPU_PA_RISC1_0
+		      528) HP_ARCH="hppa1.1" ;; # CPU_PA_RISC1_1
+		      532)                      # CPU_PA_RISC2_0
+			case "${sc_kernel_bits}" in
+			  32) HP_ARCH="hppa2.0n" ;;
+			  64) HP_ARCH="hppa2.0w" ;;
 			  '') HP_ARCH="hppa2.0" ;;   # HP-UX 10.20
-                        esac ;;
-                    esac
+			esac ;;
+		    esac
 		fi
 		if [ "${HP_ARCH}" = "" ]; then
 		    eval $set_cc_for_build
-		    sed 's/^              //' << EOF >$dummy.c
+		    sed 's/^		//' << EOF >$dummy.c
 
-              #define _HPUX_SOURCE
-              #include <stdlib.h>
-              #include <unistd.h>
+		#define _HPUX_SOURCE
+		#include <stdlib.h>
+		#include <unistd.h>
 
-              int main ()
-              {
-              #if defined(_SC_KERNEL_BITS)
-                  long bits = sysconf(_SC_KERNEL_BITS);
-              #endif
-                  long cpu  = sysconf (_SC_CPU_VERSION);
+		int main ()
+		{
+		#if defined(_SC_KERNEL_BITS)
+		    long bits = sysconf(_SC_KERNEL_BITS);
+		#endif
+		    long cpu  = sysconf (_SC_CPU_VERSION);
 
-                  switch (cpu)
-              	{
-              	case CPU_PA_RISC1_0: puts ("hppa1.0"); break;
-              	case CPU_PA_RISC1_1: puts ("hppa1.1"); break;
-              	case CPU_PA_RISC2_0:
-              #if defined(_SC_KERNEL_BITS)
-              	    switch (bits)
-              		{
-              		case 64: puts ("hppa2.0w"); break;
-              		case 32: puts ("hppa2.0n"); break;
-              		default: puts ("hppa2.0"); break;
-              		} break;
-              #else  /* !defined(_SC_KERNEL_BITS) */
-              	    puts ("hppa2.0"); break;
-              #endif
-              	default: puts ("hppa1.0"); break;
-              	}
-                  exit (0);
-              }
+		    switch (cpu)
+			{
+			case CPU_PA_RISC1_0: puts ("hppa1.0"); break;
+			case CPU_PA_RISC1_1: puts ("hppa1.1"); break;
+			case CPU_PA_RISC2_0:
+		#if defined(_SC_KERNEL_BITS)
+			    switch (bits)
+				{
+				case 64: puts ("hppa2.0w"); break;
+				case 32: puts ("hppa2.0n"); break;
+				default: puts ("hppa2.0"); break;
+				} break;
+		#else  /* !defined(_SC_KERNEL_BITS) */
+			    puts ("hppa2.0"); break;
+		#endif
+			default: puts ("hppa1.0"); break;
+			}
+		    exit (0);
+		}
 EOF
 		    (CCOPTS= $CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null) && HP_ARCH=`$dummy`
 		    test -z "$HP_ARCH" && HP_ARCH=hppa
@@ -730,22 +736,22 @@ EOF
 	exit ;;
     C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*)
 	echo c1-convex-bsd
-        exit ;;
+	exit ;;
     C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*)
 	if getsysinfo -f scalar_acc
 	then echo c32-convex-bsd
 	else echo c2-convex-bsd
 	fi
-        exit ;;
+	exit ;;
     C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*)
 	echo c34-convex-bsd
-        exit ;;
+	exit ;;
     C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*)
 	echo c38-convex-bsd
-        exit ;;
+	exit ;;
     C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*)
 	echo c4-convex-bsd
-        exit ;;
+	exit ;;
     CRAY*Y-MP:*:*:*)
 	echo ymp-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
 	exit ;;
@@ -769,14 +775,14 @@ EOF
 	exit ;;
     F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*)
 	FUJITSU_PROC=`uname -m | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'`
-        FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'`
-        FUJITSU_REL=`echo ${UNAME_RELEASE} | sed -e 's/ /_/'`
-        echo "${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
-        exit ;;
+	FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'`
+	FUJITSU_REL=`echo ${UNAME_RELEASE} | sed -e 's/ /_/'`
+	echo "${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
+	exit ;;
     5000:UNIX_System_V:4.*:*)
-        FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'`
-        FUJITSU_REL=`echo ${UNAME_RELEASE} | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/ /_/'`
-        echo "sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
+	FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'`
+	FUJITSU_REL=`echo ${UNAME_RELEASE} | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/ /_/'`
+	echo "sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
 	exit ;;
     i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*)
 	echo ${UNAME_MACHINE}-pc-bsdi${UNAME_RELEASE}
@@ -788,30 +794,35 @@ EOF
 	echo ${UNAME_MACHINE}-unknown-bsdi${UNAME_RELEASE}
 	exit ;;
     *:FreeBSD:*:*)
-	case ${UNAME_MACHINE} in
-	    pc98)
-		echo i386-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
+	UNAME_PROCESSOR=`/usr/bin/uname -p`
+	case ${UNAME_PROCESSOR} in
 	    amd64)
 		echo x86_64-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
 	    *)
-		echo ${UNAME_MACHINE}-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
+		echo ${UNAME_PROCESSOR}-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
 	esac
 	exit ;;
     i*:CYGWIN*:*)
 	echo ${UNAME_MACHINE}-pc-cygwin
 	exit ;;
+    *:MINGW64*:*)
+	echo ${UNAME_MACHINE}-pc-mingw64
+	exit ;;
     *:MINGW*:*)
 	echo ${UNAME_MACHINE}-pc-mingw32
 	exit ;;
+    i*:MSYS*:*)
+	echo ${UNAME_MACHINE}-pc-msys
+	exit ;;
     i*:windows32*:*)
-    	# uname -m includes "-pc" on this system.
-    	echo ${UNAME_MACHINE}-mingw32
+	# uname -m includes "-pc" on this system.
+	echo ${UNAME_MACHINE}-mingw32
 	exit ;;
     i*:PW*:*)
 	echo ${UNAME_MACHINE}-pc-pw32
 	exit ;;
     *:Interix*:*)
-    	case ${UNAME_MACHINE} in
+	case ${UNAME_MACHINE} in
 	    x86)
 		echo i586-pc-interix${UNAME_RELEASE}
 		exit ;;
@@ -857,6 +868,13 @@ EOF
     i*86:Minix:*:*)
 	echo ${UNAME_MACHINE}-pc-minix
 	exit ;;
+    aarch64:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit ;;
+    aarch64_be:Linux:*:*)
+	UNAME_MACHINE=aarch64_be
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit ;;
     alpha:Linux:*:*)
 	case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' < /proc/cpuinfo` in
 	  EV5)   UNAME_MACHINE=alphaev5 ;;
@@ -866,7 +884,7 @@ EOF
 	  EV6)   UNAME_MACHINE=alphaev6 ;;
 	  EV67)  UNAME_MACHINE=alphaev67 ;;
 	  EV68*) UNAME_MACHINE=alphaev68 ;;
-        esac
+	esac
 	objdump --private-headers /bin/sh | grep -q ld.so.1
 	if test "$?" = 0 ; then LIBC="libc1" ; else LIBC="" ; fi
 	echo ${UNAME_MACHINE}-unknown-linux-gnu${LIBC}
@@ -878,20 +896,29 @@ EOF
 	then
 	    echo ${UNAME_MACHINE}-unknown-linux-gnu
 	else
-	    echo ${UNAME_MACHINE}-unknown-linux-gnueabi
+	    if echo __ARM_PCS_VFP | $CC_FOR_BUILD -E - 2>/dev/null \
+		| grep -q __ARM_PCS_VFP
+	    then
+		echo ${UNAME_MACHINE}-unknown-linux-gnueabi
+	    else
+		echo ${UNAME_MACHINE}-unknown-linux-gnueabihf
+	    fi
 	fi
 	exit ;;
     avr32*:Linux:*:*)
 	echo ${UNAME_MACHINE}-unknown-linux-gnu
 	exit ;;
     cris:Linux:*:*)
-	echo cris-axis-linux-gnu
+	echo ${UNAME_MACHINE}-axis-linux-gnu
 	exit ;;
     crisv32:Linux:*:*)
-	echo crisv32-axis-linux-gnu
+	echo ${UNAME_MACHINE}-axis-linux-gnu
 	exit ;;
     frv:Linux:*:*)
-    	echo frv-unknown-linux-gnu
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit ;;
+    hexagon:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
 	exit ;;
     i*86:Linux:*:*)
 	LIBC=gnu
@@ -933,7 +960,7 @@ EOF
 	test x"${CPU}" != x && { echo "${CPU}-unknown-linux-gnu"; exit; }
 	;;
     or32:Linux:*:*)
-	echo or32-unknown-linux-gnu
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
 	exit ;;
     padre:Linux:*:*)
 	echo sparc-unknown-linux-gnu
@@ -959,7 +986,7 @@ EOF
 	echo ${UNAME_MACHINE}-ibm-linux
 	exit ;;
     sh64*:Linux:*:*)
-    	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
 	exit ;;
     sh*:Linux:*:*)
 	echo ${UNAME_MACHINE}-unknown-linux-gnu
@@ -967,14 +994,17 @@ EOF
     sparc:Linux:*:* | sparc64:Linux:*:*)
 	echo ${UNAME_MACHINE}-unknown-linux-gnu
 	exit ;;
+    tile*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	exit ;;
     vax:Linux:*:*)
 	echo ${UNAME_MACHINE}-dec-linux-gnu
 	exit ;;
     x86_64:Linux:*:*)
-	echo x86_64-unknown-linux-gnu
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
 	exit ;;
     xtensa*:Linux:*:*)
-    	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	echo ${UNAME_MACHINE}-unknown-linux-gnu
 	exit ;;
     i*86:DYNIX/ptx:4*:*)
 	# ptx 4.0 does uname -s correctly, with DYNIX/ptx in there.
@@ -983,11 +1013,11 @@ EOF
 	echo i386-sequent-sysv4
 	exit ;;
     i*86:UNIX_SV:4.2MP:2.*)
-        # Unixware is an offshoot of SVR4, but it has its own version
-        # number series starting with 2...
-        # I am not positive that other SVR4 systems won't match this,
+	# Unixware is an offshoot of SVR4, but it has its own version
+	# number series starting with 2...
+	# I am not positive that other SVR4 systems won't match this,
 	# I just have to hope.  -- rms.
-        # Use sysv4.2uw... so that sysv4* matches it.
+	# Use sysv4.2uw... so that sysv4* matches it.
 	echo ${UNAME_MACHINE}-pc-sysv4.2uw${UNAME_VERSION}
 	exit ;;
     i*86:OS/2:*:*)
@@ -1019,7 +1049,7 @@ EOF
 	fi
 	exit ;;
     i*86:*:5:[678]*)
-    	# UnixWare 7.x, OpenUNIX and OpenServer 6.
+	# UnixWare 7.x, OpenUNIX and OpenServer 6.
 	case `/bin/uname -X | grep "^Machine"` in
 	    *486*)	     UNAME_MACHINE=i486 ;;
 	    *Pentium)	     UNAME_MACHINE=i586 ;;
@@ -1047,13 +1077,13 @@ EOF
 	exit ;;
     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 i586.
+	# uname -m prints for DJGPP always 'pc', but it prints nothing about
+	# 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 ;;
+	exit ;;
     Intel:Mach:3*:*)
 	echo i386-pc-mach3
 	exit ;;
@@ -1088,8 +1118,8 @@ EOF
 	/bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
 	  && { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;;
     3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*)
-        /bin/uname -p 2>/dev/null | grep 86 >/dev/null \
-          && { echo i486-ncr-sysv4; exit; } ;;
+	/bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+	  && { echo i486-ncr-sysv4; exit; } ;;
     NCR*:*:4.2:* | MPRAS*:*:4.2:*)
 	OS_REL='.3'
 	test -r /etc/.relid \
@@ -1132,10 +1162,10 @@ EOF
 		echo ns32k-sni-sysv
 	fi
 	exit ;;
-    PENTIUM:*:4.0*:*) # Unisys `ClearPath HMP IX 4000' SVR4/MP effort
-                      # says <Richard.M.Bartel@ccMail.Census.GOV>
-        echo i586-unisys-sysv4
-        exit ;;
+    PENTIUM:*:4.0*:*)	# Unisys `ClearPath HMP IX 4000' SVR4/MP effort
+			# says <Richard.M.Bartel@ccMail.Census.GOV>
+	echo i586-unisys-sysv4
+	exit ;;
     *:UNIX_System_V:4*:FTX*)
 	# From Gerald Hewes <hewes@openmarket.com>.
 	# How about differentiating between stratus architectures? -djm
@@ -1161,11 +1191,11 @@ EOF
 	exit ;;
     R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*)
 	if [ -d /usr/nec ]; then
-	        echo mips-nec-sysv${UNAME_RELEASE}
+		echo mips-nec-sysv${UNAME_RELEASE}
 	else
-	        echo mips-unknown-sysv${UNAME_RELEASE}
+		echo mips-unknown-sysv${UNAME_RELEASE}
 	fi
-        exit ;;
+	exit ;;
     BeBox:BeOS:*:*)	# BeOS running on hardware made by Be, PPC only.
 	echo powerpc-be-beos
 	exit ;;
@@ -1178,6 +1208,9 @@ EOF
     BePC:Haiku:*:*)	# Haiku running on Intel PC compatible.
 	echo i586-pc-haiku
 	exit ;;
+    x86_64:Haiku:*:*)
+	echo x86_64-unknown-haiku
+	exit ;;
     SX-4:SUPER-UX:*:*)
 	echo sx4-nec-superux${UNAME_RELEASE}
 	exit ;;
@@ -1230,7 +1263,10 @@ EOF
     *:QNX:*:4*)
 	echo i386-pc-qnx
 	exit ;;
-    NSE-?:NONSTOP_KERNEL:*:*)
+    NEO-?:NONSTOP_KERNEL:*:*)
+	echo neo-tandem-nsk${UNAME_RELEASE}
+	exit ;;
+    NSE-*:NONSTOP_KERNEL:*:*)
 	echo nse-tandem-nsk${UNAME_RELEASE}
 	exit ;;
     NSR-?:NONSTOP_KERNEL:*:*)
@@ -1275,13 +1311,13 @@ EOF
 	echo pdp10-unknown-its
 	exit ;;
     SEI:*:*:SEIUX)
-        echo mips-sei-seiux${UNAME_RELEASE}
+	echo mips-sei-seiux${UNAME_RELEASE}
 	exit ;;
     *:DragonFly:*:*)
 	echo ${UNAME_MACHINE}-unknown-dragonfly`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`
 	exit ;;
     *:*VMS:*:*)
-    	UNAME_MACHINE=`(uname -p) 2>/dev/null`
+	UNAME_MACHINE=`(uname -p) 2>/dev/null`
 	case "${UNAME_MACHINE}" in
 	    A*) echo alpha-dec-vms ; exit ;;
 	    I*) echo ia64-dec-vms ; exit ;;
@@ -1299,11 +1335,11 @@ EOF
     i*86:AROS:*:*)
 	echo ${UNAME_MACHINE}-pc-aros
 	exit ;;
+    x86_64:VMkernel:*:*)
+	echo ${UNAME_MACHINE}-unknown-esx
+	exit ;;
 esac
 
-#echo '(No uname command or uname output not recognized.)' 1>&2
-#echo "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" 1>&2
-
 eval $set_cc_for_build
 cat >$dummy.c <<EOF
 #ifdef _SEQUENT_
@@ -1321,11 +1357,11 @@ main ()
 #include <sys/param.h>
   printf ("m68k-sony-newsos%s\n",
 #ifdef NEWSOS4
-          "4"
+	"4"
 #else
-	  ""
+	""
 #endif
-         ); exit (0);
+	); exit (0);
 #endif
 #endif
 

config.h.in

@@ -3,6 +3,9 @@
 /* Define to 1 if you have the <dlfcn.h> header file. */
 #undef HAVE_DLFCN_H
 
+/* Define to 1 if you have the `feenableexcept' function. */
+#undef HAVE_FEENABLEEXCEPT
+
 /* Define to 1 if you have the <inttypes.h> header file. */
 #undef HAVE_INTTYPES_H
 
@@ -70,6 +73,12 @@
 /* Define to the version of this package. */
 #undef PACKAGE_VERSION
 
+/* Align row buffers */
+#undef PNG_ALIGNED_MEMORY_SUPPORTED
+
+/* ARM NEON filter initialization function */
+#undef PNG_FILTER_OPTIMIZATIONS
+
 /* Define to 1 if you have the ANSI C header files. */
 #undef STDC_HEADERS
 
@@ -82,5 +91,19 @@
 /* Define to empty if `const' does not conform to ANSI C. */
 #undef const
 
+/* Define to the equivalent of the C99 'restrict' keyword, or to
+   nothing if this is not supported.  Do not define if restrict is
+   supported directly.  */
+#undef restrict
+/* Work around a bug in Sun C++: it does not support _Restrict or
+   __restrict__, even though the corresponding Sun C compiler ends up with
+   "#define restrict _Restrict" or "#define restrict __restrict__" in the
+   previous line.  Perhaps some future version of Sun C++ will work with
+   restrict; if so, hopefully it defines __RESTRICT like Sun C does.  */
+#if defined __SUNPRO_CC && !defined __RESTRICT
+# define _Restrict
+# define __restrict__
+#endif
+
 /* Define to `unsigned int' if <sys/types.h> does not define. */
 #undef size_t

config.sub

@@ -1,10 +1,10 @@
 #! /bin/sh
 # Configuration validation subroutine script.
 #   Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
-#   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
-#   Free Software Foundation, Inc.
+#   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
+#   2011, 2012 Free Software Foundation, Inc.
 
-timestamp='2009-11-20'
+timestamp='2012-10-10'
 
 # This file is (in principle) common to ALL GNU software.
 # The presence of a machine in this file suggests that SOME GNU software
@@ -21,9 +21,7 @@ timestamp='2009-11-20'
 # 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
@@ -75,8 +73,9 @@ Report bugs and patches to <config-patches@gnu.org>."
 version="\
 GNU config.sub ($timestamp)
 
-Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
-2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
+2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
+Free Software Foundation, Inc.
 
 This is free software; see the source for copying conditions.  There is NO
 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
@@ -123,13 +122,18 @@ esac
 # Here we must recognize all the valid KERNEL-OS combinations.
 maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'`
 case $maybe_os in
-  nto-qnx* | linux-gnu* | linux-dietlibc | linux-newlib* | linux-uclibc* | \
-  uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | knetbsd*-gnu* | netbsd*-gnu* | \
+  nto-qnx* | linux-gnu* | linux-android* | linux-dietlibc | linux-newlib* | \
+  linux-musl* | linux-uclibc* | uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | \
+  knetbsd*-gnu* | netbsd*-gnu* | \
   kopensolaris*-gnu* | \
   storm-chaos* | os2-emx* | rtmk-nova*)
     os=-$maybe_os
     basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`
     ;;
+  android-linux)
+    os=-linux-android
+    basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`-unknown
+    ;;
   *)
     basic_machine=`echo $1 | sed 's/-[^-]*$//'`
     if [ $basic_machine != $1 ]
@@ -152,12 +156,12 @@ case $os in
 	-convergent* | -ncr* | -news | -32* | -3600* | -3100* | -hitachi* |\
 	-c[123]* | -convex* | -sun | -crds | -omron* | -dg | -ultra | -tti* | \
 	-harris | -dolphin | -highlevel | -gould | -cbm | -ns | -masscomp | \
-	-apple | -axis | -knuth | -cray | -microblaze)
+	-apple | -axis | -knuth | -cray | -microblaze*)
 		os=
 		basic_machine=$1
 		;;
-        -bluegene*)
-	        os=-cnk
+	-bluegene*)
+		os=-cnk
 		;;
 	-sim | -cisco | -oki | -wec | -winbond)
 		os=
@@ -173,10 +177,10 @@ case $os in
 		os=-chorusos
 		basic_machine=$1
 		;;
- 	-chorusrdb)
- 		os=-chorusrdb
+	-chorusrdb)
+		os=-chorusrdb
 		basic_machine=$1
- 		;;
+		;;
 	-hiux*)
 		os=-hiuxwe2
 		;;
@@ -221,6 +225,12 @@ case $os in
 	-isc*)
 		basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
 		;;
+	-lynx*178)
+		os=-lynxos178
+		;;
+	-lynx*5)
+		os=-lynxos5
+		;;
 	-lynx*)
 		os=-lynxos
 		;;
@@ -245,20 +255,27 @@ case $basic_machine in
 	# Some are omitted here because they have special meanings below.
 	1750a | 580 \
 	| a29k \
+	| aarch64 | aarch64_be \
 	| alpha | alphaev[4-8] | alphaev56 | alphaev6[78] | alphapca5[67] \
 	| alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] | alpha64pca5[67] \
 	| am33_2.0 \
-	| arc | arm | arm[bl]e | arme[lb] | armv[2345] | armv[345][lb] | avr | avr32 \
+	| arc \
+	| arm | arm[bl]e | arme[lb] | armv[2-8] | armv[3-8][lb] | armv7[arm] \
+	| avr | avr32 \
+	| be32 | be64 \
 	| bfin \
 	| c4x | clipper \
 	| d10v | d30v | dlx | dsp16xx \
+	| epiphany \
 	| fido | fr30 | frv \
 	| h8300 | h8500 | hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \
+	| hexagon \
 	| i370 | i860 | i960 | ia64 \
 	| ip2k | iq2000 \
+	| le32 | le64 \
 	| lm32 \
 	| m32c | m32r | m32rle | m68000 | m68k | m88k \
-	| maxq | mb | microblaze | mcore | mep | metag \
+	| maxq | mb | microblaze | microblazeel | mcore | mep | metag \
 	| mips | mipsbe | mipseb | mipsel | mipsle \
 	| mips16 \
 	| mips64 | mips64el \
@@ -281,29 +298,39 @@ case $basic_machine in
 	| moxie \
 	| mt \
 	| msp430 \
+	| nds32 | nds32le | nds32be \
 	| nios | nios2 \
 	| ns16k | ns32k \
+	| open8 \
 	| or32 \
 	| pdp10 | pdp11 | pj | pjl \
-	| powerpc | powerpc64 | powerpc64le | powerpcle | ppcbe \
+	| powerpc | powerpc64 | powerpc64le | powerpcle \
 	| pyramid \
-	| rx \
+	| rl78 | rx \
 	| score \
 	| sh | sh[1234] | sh[24]a | sh[24]aeb | sh[23]e | sh[34]eb | sheb | shbe | shle | sh[1234]le | sh3ele \
 	| sh64 | sh64le \
 	| sparc | sparc64 | sparc64b | sparc64v | sparc86x | sparclet | sparclite \
 	| sparcv8 | sparcv9 | sparcv9b | sparcv9v \
-	| spu | strongarm \
-	| tahoe | thumb | tic4x | tic80 | tron \
+	| spu \
+	| tahoe | tic4x | tic54x | tic55x | tic6x | tic80 | tron \
 	| ubicom32 \
-	| v850 | v850e \
+	| v850 | v850e | v850e1 | v850e2 | v850es | v850e2v3 \
 	| we32k \
-	| x86 | xc16x | xscale | xscalee[bl] | xstormy16 | xtensa \
+	| x86 | xc16x | xstormy16 | xtensa \
 	| z8k | z80)
 		basic_machine=$basic_machine-unknown
 		;;
-	m6811 | m68hc11 | m6812 | m68hc12 | picochip)
-		# Motorola 68HC11/12.
+	c54x)
+		basic_machine=tic54x-unknown
+		;;
+	c55x)
+		basic_machine=tic55x-unknown
+		;;
+	c6x)
+		basic_machine=tic6x-unknown
+		;;
+	m6811 | m68hc11 | m6812 | m68hc12 | m68hcs12x | picochip)
 		basic_machine=$basic_machine-unknown
 		os=-none
 		;;
@@ -313,6 +340,21 @@ case $basic_machine in
 		basic_machine=mt-unknown
 		;;
 
+	strongarm | thumb | xscale)
+		basic_machine=arm-unknown
+		;;
+	xgate)
+		basic_machine=$basic_machine-unknown
+		os=-none
+		;;
+	xscaleeb)
+		basic_machine=armeb-unknown
+		;;
+
+	xscaleel)
+		basic_machine=armel-unknown
+		;;
+
 	# We use `pc' rather than `unknown'
 	# because (1) that's what they normally are, and
 	# (2) the word "unknown" tends to confuse beginning users.
@@ -327,25 +369,30 @@ case $basic_machine in
 	# Recognize the basic CPU types with company name.
 	580-* \
 	| a29k-* \
+	| aarch64-* | aarch64_be-* \
 	| alpha-* | alphaev[4-8]-* | alphaev56-* | alphaev6[78]-* \
 	| alpha64-* | alpha64ev[4-8]-* | alpha64ev56-* | alpha64ev6[78]-* \
 	| alphapca5[67]-* | alpha64pca5[67]-* | arc-* \
 	| arm-*  | armbe-* | armle-* | armeb-* | armv*-* \
 	| avr-* | avr32-* \
+	| be32-* | be64-* \
 	| bfin-* | bs2000-* \
-	| c[123]* | c30-* | [cjt]90-* | c4x-* | c54x-* | c55x-* | c6x-* \
+	| c[123]* | c30-* | [cjt]90-* | c4x-* \
 	| clipper-* | craynv-* | cydra-* \
 	| d10v-* | d30v-* | dlx-* \
 	| elxsi-* \
 	| f30[01]-* | f700-* | fido-* | fr30-* | frv-* | fx80-* \
 	| h8300-* | h8500-* \
 	| hppa-* | hppa1.[01]-* | hppa2.0-* | hppa2.0[nw]-* | hppa64-* \
+	| hexagon-* \
 	| i*86-* | i860-* | i960-* | ia64-* \
 	| ip2k-* | iq2000-* \
+	| le32-* | le64-* \
 	| lm32-* \
 	| m32c-* | m32r-* | m32rle-* \
 	| m68000-* | m680[012346]0-* | m68360-* | m683?2-* | m68k-* \
-	| m88110-* | m88k-* | maxq-* | mcore-* | metag-* | microblaze-* \
+	| m88110-* | m88k-* | maxq-* | mcore-* | metag-* \
+	| microblaze-* | microblazeel-* \
 	| mips-* | mipsbe-* | mipseb-* | mipsel-* | mipsle-* \
 	| mips16-* \
 	| mips64-* | mips64el-* \
@@ -367,25 +414,29 @@ case $basic_machine in
 	| mmix-* \
 	| mt-* \
 	| msp430-* \
+	| nds32-* | nds32le-* | nds32be-* \
 	| nios-* | nios2-* \
 	| none-* | np1-* | ns16k-* | ns32k-* \
+	| open8-* \
 	| orion-* \
 	| pdp10-* | pdp11-* | pj-* | pjl-* | pn-* | power-* \
-	| powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* | ppcbe-* \
+	| powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* \
 	| pyramid-* \
-	| romp-* | rs6000-* | rx-* \
+	| rl78-* | romp-* | rs6000-* | rx-* \
 	| 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-* | strongarm-* | sv1-* | sx?-* \
-	| tahoe-* | thumb-* \
-	| tic30-* | tic4x-* | tic54x-* | tic55x-* | tic6x-* | tic80-* | tile-* \
+	| sparcv8-* | sparcv9-* | sparcv9b-* | sparcv9v-* | sv1-* | sx?-* \
+	| tahoe-* \
+	| tic30-* | tic4x-* | tic54x-* | tic55x-* | tic6x-* | tic80-* \
+	| tile*-* \
 	| tron-* \
 	| ubicom32-* \
-	| v850-* | v850e-* | vax-* \
+	| v850-* | v850e-* | v850e1-* | v850es-* | v850e2-* | v850e2v3-* \
+	| vax-* \
 	| we32k-* \
-	| x86-* | x86_64-* | xc16x-* | xps100-* | xscale-* | xscalee[bl]-* \
+	| x86-* | x86_64-* | xc16x-* | xps100-* \
 	| xstormy16-* | xtensa*-* \
 	| ymp-* \
 	| z8k-* | z80-*)
@@ -410,7 +461,7 @@ case $basic_machine in
 		basic_machine=a29k-amd
 		os=-udi
 		;;
-    	abacus)
+	abacus)
 		basic_machine=abacus-unknown
 		;;
 	adobe68k)
@@ -480,11 +531,20 @@ case $basic_machine in
 		basic_machine=powerpc-ibm
 		os=-cnk
 		;;
+	c54x-*)
+		basic_machine=tic54x-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	c55x-*)
+		basic_machine=tic55x-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
+	c6x-*)
+		basic_machine=tic6x-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
 	c90)
 		basic_machine=c90-cray
 		os=-unicos
 		;;
-        cegcc)
+	cegcc)
 		basic_machine=arm-unknown
 		os=-cegcc
 		;;
@@ -516,7 +576,7 @@ case $basic_machine in
 		basic_machine=craynv-cray
 		os=-unicosmp
 		;;
-	cr16)
+	cr16 | cr16-*)
 		basic_machine=cr16-unknown
 		os=-elf
 		;;
@@ -674,7 +734,6 @@ case $basic_machine in
 	i370-ibm* | ibm*)
 		basic_machine=i370-ibm
 		;;
-# I'm not sure what "Sysv32" means.  Should this be sysv3.2?
 	i*86v32)
 		basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
 		os=-sysv32
@@ -732,9 +791,13 @@ case $basic_machine in
 		basic_machine=ns32k-utek
 		os=-sysv
 		;;
-        microblaze)
+	microblaze*)
 		basic_machine=microblaze-xilinx
 		;;
+	mingw64)
+		basic_machine=x86_64-pc
+		os=-mingw64
+		;;
 	mingw32)
 		basic_machine=i386-pc
 		os=-mingw32
@@ -771,10 +834,18 @@ case $basic_machine in
 	ms1-*)
 		basic_machine=`echo $basic_machine | sed -e 's/ms1-/mt-/'`
 		;;
+	msys)
+		basic_machine=i386-pc
+		os=-msys
+		;;
 	mvs)
 		basic_machine=i370-ibm
 		os=-mvs
 		;;
+	nacl)
+		basic_machine=le32-unknown
+		os=-nacl
+		;;
 	ncr3000)
 		basic_machine=i486-ncr
 		os=-sysv4
@@ -839,6 +910,12 @@ case $basic_machine in
 	np1)
 		basic_machine=np1-gould
 		;;
+	neo-tandem)
+		basic_machine=neo-tandem
+		;;
+	nse-tandem)
+		basic_machine=nse-tandem
+		;;
 	nsr-tandem)
 		basic_machine=nsr-tandem
 		;;
@@ -921,9 +998,10 @@ case $basic_machine in
 		;;
 	power)	basic_machine=power-ibm
 		;;
-	ppc)	basic_machine=powerpc-unknown
+	ppc | ppcbe)	basic_machine=powerpc-unknown
 		;;
-	ppc-*)	basic_machine=powerpc-`echo $basic_machine | sed 's/^[^-]*-//'`
+	ppc-* | ppcbe-*)
+		basic_machine=powerpc-`echo $basic_machine | sed 's/^[^-]*-//'`
 		;;
 	ppcle | powerpclittle | ppc-le | powerpc-little)
 		basic_machine=powerpcle-unknown
@@ -1017,6 +1095,9 @@ case $basic_machine in
 		basic_machine=i860-stratus
 		os=-sysv4
 		;;
+	strongarm-* | thumb-*)
+		basic_machine=arm-`echo $basic_machine | sed 's/^[^-]*-//'`
+		;;
 	sun2)
 		basic_machine=m68000-sun
 		;;
@@ -1073,20 +1154,8 @@ case $basic_machine in
 		basic_machine=t90-cray
 		os=-unicos
 		;;
-	tic54x | c54x*)
-		basic_machine=tic54x-unknown
-		os=-coff
-		;;
-	tic55x | c55x*)
-		basic_machine=tic55x-unknown
-		os=-coff
-		;;
-	tic6x | c6x*)
-		basic_machine=tic6x-unknown
-		os=-coff
-		;;
 	tile*)
-		basic_machine=tile-unknown
+		basic_machine=$basic_machine-unknown
 		os=-linux-gnu
 		;;
 	tx39)
@@ -1156,6 +1225,9 @@ case $basic_machine in
 	xps | xps100)
 		basic_machine=xps100-honeywell
 		;;
+	xscale-* | xscalee[bl]-*)
+		basic_machine=`echo $basic_machine | sed 's/^xscale/arm/'`
+		;;
 	ymp)
 		basic_machine=ymp-cray
 		os=-unicos
@@ -1253,11 +1325,11 @@ esac
 if [ x"$os" != x"" ]
 then
 case $os in
-        # First match some system type aliases
-        # that might get confused with valid system types.
+	# First match some system type aliases
+	# that might get confused with valid system types.
 	# -solaris* is a basic system type, with this one exception.
-        -auroraux)
-	        os=-auroraux
+	-auroraux)
+		os=-auroraux
 		;;
 	-solaris1 | -solaris1.*)
 		os=`echo $os | sed -e 's|solaris1|sunos4|'`
@@ -1287,14 +1359,15 @@ case $os in
 	      | -nindy* | -vxsim* | -vxworks* | -ebmon* | -hms* | -mvs* \
 	      | -clix* | -riscos* | -uniplus* | -iris* | -rtu* | -xenix* \
 	      | -hiux* | -386bsd* | -knetbsd* | -mirbsd* | -netbsd* \
-	      | -openbsd* | -solidbsd* \
+	      | -bitrig* | -openbsd* | -solidbsd* \
 	      | -ekkobsd* | -kfreebsd* | -freebsd* | -riscix* | -lynxos* \
 	      | -bosx* | -nextstep* | -cxux* | -aout* | -elf* | -oabi* \
 	      | -ptx* | -coff* | -ecoff* | -winnt* | -domain* | -vsta* \
 	      | -udi* | -eabi* | -lites* | -ieee* | -go32* | -aux* \
 	      | -chorusos* | -chorusrdb* | -cegcc* \
-	      | -cygwin* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
-	      | -mingw32* | -linux-gnu* | -linux-newlib* | -linux-uclibc* \
+	      | -cygwin* | -msys* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
+	      | -mingw32* | -mingw64* | -linux-gnu* | -linux-android* \
+	      | -linux-newlib* | -linux-musl* | -linux-uclibc* \
 	      | -uxpv* | -beos* | -mpeix* | -udk* \
 	      | -interix* | -uwin* | -mks* | -rhapsody* | -darwin* | -opened* \
 	      | -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \
@@ -1341,7 +1414,7 @@ case $os in
 	-opened*)
 		os=-openedition
 		;;
-        -os400*)
+	-os400*)
 		os=-os400
 		;;
 	-wince*)
@@ -1390,7 +1463,7 @@ case $os in
 	-sinix*)
 		os=-sysv4
 		;;
-        -tpf*)
+	-tpf*)
 		os=-tpf
 		;;
 	-triton*)
@@ -1435,6 +1508,8 @@ case $os in
 	-dicos*)
 		os=-dicos
 		;;
+	-nacl*)
+		;;
 	-none)
 		;;
 	*)
@@ -1457,10 +1532,10 @@ else
 # system, and we'll never get to this point.
 
 case $basic_machine in
-        score-*)
+	score-*)
 		os=-elf
 		;;
-        spu-*)
+	spu-*)
 		os=-elf
 		;;
 	*-acorn)
@@ -1472,8 +1547,20 @@ case $basic_machine in
 	arm*-semi)
 		os=-aout
 		;;
-        c4x-* | tic4x-*)
-        	os=-coff
+	c4x-* | tic4x-*)
+		os=-coff
+		;;
+	hexagon-*)
+		os=-elf
+		;;
+	tic54x-*)
+		os=-coff
+		;;
+	tic55x-*)
+		os=-coff
+		;;
+	tic6x-*)
+		os=-coff
 		;;
 	# This must come before the *-dec entry.
 	pdp10-*)
@@ -1493,14 +1580,11 @@ case $basic_machine in
 		;;
 	m68000-sun)
 		os=-sunos3
-		# This also exists in the configure program, but was not the
-		# default.
-		# os=-sunos4
 		;;
 	m68*-cisco)
 		os=-aout
 		;;
-        mep-*)
+	mep-*)
 		os=-elf
 		;;
 	mips*-cisco)
@@ -1527,7 +1611,7 @@ case $basic_machine in
 	*-ibm)
 		os=-aix
 		;;
-    	*-knuth)
+	*-knuth)
 		os=-mmixware
 		;;
 	*-wec)

configure.ac

@@ -18,24 +18,25 @@ AC_PREREQ(2.59)
 
 dnl Version number stuff here:
 
-AC_INIT([libpng], [1.5.6beta03], [png-mng-implement@lists.sourceforge.net])
+AC_INIT([libpng], [1.5.14rc01], [png-mng-implement@lists.sourceforge.net])
 AM_INIT_AUTOMAKE
 dnl stop configure from automagically running automake
 AM_MAINTAINER_MODE
 
-PNGLIB_VERSION=1.5.6beta03
+PNGLIB_VERSION=1.5.14rc01
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=5
-PNGLIB_RELEASE=6
+PNGLIB_RELEASE=14
 
 dnl End of version number stuff
 
 AC_CONFIG_SRCDIR([pngget.c])
-AM_CONFIG_HEADER(config.h)
+AC_CONFIG_HEADERS([config.h])
 
 # Checks for programs.
 AC_LANG([C])
 AC_PROG_CC
+AM_PROG_AS
 AC_PROG_LD
 AC_PROG_CPP
 AC_CHECK_TOOL(SED, sed, :)
@@ -75,6 +76,7 @@ AC_CHECK_HEADERS([malloc.h stdlib.h string.h strings.h])
 AC_C_CONST
 AC_TYPE_SIZE_T
 AC_STRUCT_TM
+AC_C_RESTRICT
 
 # Checks for library functions.
 AC_FUNC_STRTOD
@@ -89,13 +91,16 @@ AC_CHECK_LIB(z, zlibVersion, ,
     AC_CHECK_LIB(z, ${ZPREFIX}zlibVersion, ,
                  AC_ERROR([zlib not installed])))
 
+# The following is for pngvalid, to ensure it catches FP errors even on
+# platforms that don't enable FP exceptions, the function appears in the math
+# library (typically), it's not an error if it is not found.
+AC_CHECK_LIB([m], [feenableexcept])
+AC_CHECK_FUNCS([feenableexcept])
 
 LIBPNG_DEFINES=-DPNG_CONFIGURE_LIBPNG
 LIBPNG_DEFINES=$LIBPNG_DEFINES
 AC_SUBST(LIBPNG_DEFINES)
 
-AC_MSG_CHECKING([if libraries can be versioned])
-
 AC_MSG_CHECKING([if using Solaris linker])
 SLD=`$LD --version 2>&1 | grep Solaris`
 if test "$SLD"; then
@@ -107,6 +112,7 @@ else
 fi
 AM_CONDITIONAL(HAVE_SOLARIS_LD, test "$have_solaris_ld" = "yes")
 
+AC_MSG_CHECKING([if libraries can be versioned])
 # Special case for PE/COFF platforms: ld reports
 # support for version-script, but doesn't actually
 # DO anything with it.
@@ -139,9 +145,9 @@ AM_CONDITIONAL(HAVE_LD_VERSION_SCRIPT, test "$have_ld_version_script" = "yes")
 if test "$have_ld_version_script" = "yes"; then
     AC_MSG_CHECKING([for symbol prefix])
     SYMBOL_PREFIX=`echo "PREFIX=__USER_LABEL_PREFIX__" \
-                   | ${CPP-${CC-gcc} -E} - 2>&1 \
-                   | ${EGREP-grep} "^PREFIX=" \
-                   | ${SED-sed} "s:^PREFIX=::"`
+                  | ${CPP-${CC-gcc} -E} - 2>&1 \
+                  | ${EGREP-grep} "^PREFIX=" \
+                  | ${SED-sed} -e "s:^PREFIX=::" -e "s:__USER_LABEL_PREFIX__::"`
     AC_SUBST(SYMBOL_PREFIX)
     AC_MSG_RESULT($SYMBOL_PREFIX)
 fi
@@ -177,6 +183,22 @@ AC_ARG_WITH(binconfigs,
 	[binconfigs='${binconfigs}'])
 AC_SUBST([binconfigs])
 
+# Because GCC by default assembles code with an executable stack, even though it
+# compiles C code with a non-executable stack, it is necessary to do a fixup
+# here (this may by GCC specific)
+AC_SUBST([AM_CCASFLAGS], [-Wa,--noexecstack])
+
+AC_ARG_ENABLE([arm-neon],
+	AC_HELP_STRING([--enable-arm-neon], [Enable ARM NEON optimizations]),
+	[if test "${enableval}" = yes; then
+		AC_DEFINE([PNG_FILTER_OPTIMIZATIONS],
+                          [png_init_filter_functions_neon],
+                          [ARM NEON filter initialization function])
+		AC_DEFINE([PNG_ALIGNED_MEMORY_SUPPORTED], [1],
+                          [Align row buffers])
+	fi])
+AM_CONDITIONAL([PNG_ARM_NEON], [test "${enable_arm_neon:-no}" = yes])
+
 # Config files, substituting as above
 AC_CONFIG_FILES([Makefile libpng.pc:libpng.pc.in])
 AC_CONFIG_FILES([libpng-config:libpng-config.in],

contrib/README.txt

@@ -0,0 +1,4 @@
+
+This "contrib" directory contains contributions which are not necessarily under
+the libpng license, although all are open source.  They are not part of
+libpng proper and are not used for building the library.

contrib/gregbook/readpng.c

@@ -55,8 +55,9 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <zlib.h>
 
-#include "png.h"        /* libpng header; includes zlib.h */
+#include "png.h"        /* libpng header */
 #include "readpng.h"    /* typedefs, common macros, public prototypes */
 
 /* future versions of libpng will provide this macro: */

contrib/gregbook/rpng2-win.c

@@ -590,7 +590,7 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, PSTR cmd, int showmode)
                   "(unexpectedly) while reading PNG image file\n");
                 exit(3);
             } else /* if (error) */ {
-                // will print error message below
+                /* will print error message below */
             }
             break;
         }

contrib/gregbook/rpng2-x.c

@@ -591,7 +591,7 @@ int main(int argc, char **argv)
                   "(unexpectedly) while reading PNG image file\n");
                 exit(3);
             } else /* if (error) */ {
-                // will print error message below
+                /* will print error message below */
             }
             break;
         }

contrib/gregbook/writepng.c

@@ -55,8 +55,9 @@
 
 
 #include <stdlib.h>     /* for exit() prototype */
+#include <zlib.h>
 
-#include "png.h"        /* libpng header; includes zlib.h and setjmp.h */
+#include "png.h"        /* libpng header, includes setjmp.h */
 #include "writepng.h"   /* typedefs, common macros, public prototypes */
 
 

contrib/pngminim/decoder/makefile

@@ -14,7 +14,7 @@ LD=$(CC)
 RM=rm -f
 COPY=cp
 
-CFLAGS=-DPNG_USER_CONFIG -DNO_GZCOMPRESS -DNO_GZIP -I. -O1
+CFLAGS=-DPNG_USER_CONFIG -DNO_GZCOMPRESS -DZ_SOLO -DNO_GZIP -I. -O1
 
 C=.c
 O=.o

contrib/pngminim/decoder/pngusr.h

@@ -19,5 +19,6 @@
  */
 
 #define PNG_NO_WARNINGS
+#define PNG_ALIGN_TYPE PNG_ALIGN_NONE
 
 #endif /* MINRDPNGCONF_H */

contrib/pngminim/encoder/README

@@ -1,6 +1,6 @@
 This demonstrates the use of PNG_USER_CONFIG and pngusr.h
 
-The makefile builds a minimal write-only decoder with embedded libpng
+The makefile builds a minimal write-only encoder with embedded libpng
 and zlib.
 
 Specify the location of the zlib source (1.2.1 or later) as ZLIBSRC

contrib/pngminim/encoder/makefile

@@ -14,7 +14,7 @@ LD=$(CC)
 RM=rm -f
 COPY=cp
 
-CFLAGS=-DPNG_USER_CONFIG -DNO_GZIP -I. -O1
+CFLAGS=-DPNG_USER_CONFIG -DZ_SOLO -DNO_GZIP -I. -O1
 
 C=.c
 O=.o

contrib/pngminim/encoder/pngusr.h

@@ -19,5 +19,6 @@
  */
 
 #define PNG_NO_WARNINGS
+#define PNG_ALIGN_TYPE PNG_ALIGN_NONE
 
 #endif /* MINWRPNGCONF_H */

contrib/pngminim/preader/makefile

@@ -30,7 +30,7 @@ XLIB = -L/usr/X11R6/lib -lX11
 #LIBS = $(XLIB)
 LIBS = $(XLIB) -lm                      #platforms that need libm
 
-CFLAGS=-DPNG_USER_CONFIG -DNO_GZCOMPRESS -DNO_GZIP -I. $(XINC) -O1
+CFLAGS=-DPNG_USER_CONFIG -DNO_GZCOMPRESS -DZ_SOLO -DNO_GZIP -I. $(XINC) -O1
 
 C=.c
 O=.o

contrib/pngminim/preader/pngusr.h

@@ -19,5 +19,6 @@
  */
 
 #define PNG_NO_WARNINGS
+#define PNG_ALIGN_TYPE PNG_ALIGN_NONE
 
 #endif /* MINPRDPNGCONF_H */

contrib/pngsuite/README

@@ -1,7 +1,8 @@
 
 pngsuite
 --------
-(c) Willem van Schaik, 1999, 2011
+(c) Willem van Schaik, 1999, 2011, 2012
+Two images are by Glenn Randers-Pehrson, 2012
 
 Permission to use, copy, modify, and distribute these images for any
 purpose and without fee is hereby granted.
@@ -38,6 +39,8 @@ can use them to test the proper functioning of PNG software.
     basn6a08.png   8-bit RGBA
     basn6a16.png  16-bit RGBA
 
+    ftbbn0g01.png  1-bit grayscale, black bKGD
+    ftbbn0g02.png  2-bit grayscale, black bKGD
     ftbbn0g04.png  4-bit grayscale, black bKGD
     ftbbn2c16.png 16-bit truecolor, black bKGD
     ftbbn3p08.png  8-bit paletted, black bKGD

contrib/visupng/PngFile.c

@@ -13,6 +13,7 @@
 #include <commdlg.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <zlib.h>
 
 #include "png.h"
 #include "pngfile.h"

contrib/visupng/PngFile.h

@@ -17,7 +17,7 @@ void PngFileInitialize (HWND hwnd) ;
 BOOL PngFileOpenDlg (HWND hwnd, PTSTR pstrFileName, PTSTR pstrTitleName) ;
 BOOL PngFileSaveDlg (HWND hwnd, PTSTR pstrFileName, PTSTR pstrTitleName) ;
 
-BOOL PngLoadImage (PTSTR pstrFileName, png_byte **ppbImageData, 
+BOOL PngLoadImage (PTSTR pstrFileName, png_byte **ppbImageData,
                    int *piWidth, int *piHeight, int *piChannels, png_color *pBkgColor);
 BOOL PngSaveImage (PTSTR pstrFileName, png_byte *pDiData,
                    int iWidth, int iHeight, png_color BkgColor);

contrib/visupng/VisualPng.c

@@ -27,6 +27,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <windows.h>
+#include <zlib.h>
 
 /* application includes */
 

depcomp

@@ -1,10 +1,9 @@
 #! /bin/sh
 # depcomp - compile a program generating dependencies as side-effects
 
-scriptversion=2009-04-28.21; # UTC
+scriptversion=2012-07-12.20; # UTC
 
-# Copyright (C) 1999, 2000, 2003, 2004, 2005, 2006, 2007, 2009 Free
-# Software Foundation, Inc.
+# Copyright (C) 1999-2012 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
@@ -28,7 +27,7 @@ scriptversion=2009-04-28.21; # UTC
 
 case $1 in
   '')
-     echo "$0: No command.  Try \`$0 --help' for more information." 1>&2
+     echo "$0: No command.  Try '$0 --help' for more information." 1>&2
      exit 1;
      ;;
   -h | --h*)
@@ -40,11 +39,11 @@ as side-effects.
 
 Environment variables:
   depmode     Dependency tracking mode.
-  source      Source file read by `PROGRAMS ARGS'.
-  object      Object file output by `PROGRAMS ARGS'.
+  source      Source file read by 'PROGRAMS ARGS'.
+  object      Object file output by 'PROGRAMS ARGS'.
   DEPDIR      directory where to store dependencies.
   depfile     Dependency file to output.
-  tmpdepfile  Temporary file to use when outputing dependencies.
+  tmpdepfile  Temporary file to use when outputting dependencies.
   libtool     Whether libtool is used (yes/no).
 
 Report bugs to <bug-automake@gnu.org>.
@@ -57,6 +56,12 @@ EOF
     ;;
 esac
 
+# A tabulation character.
+tab='	'
+# A newline character.
+nl='
+'
+
 if test -z "$depmode" || test -z "$source" || test -z "$object"; then
   echo "depcomp: Variables source, object and depmode must be set" 1>&2
   exit 1
@@ -69,6 +74,9 @@ tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
 
 rm -f "$tmpdepfile"
 
+# Avoid interferences from the environment.
+gccflag= dashmflag=
+
 # Some modes work just like other modes, but use different flags.  We
 # parameterize here, but still list the modes in the big case below,
 # to make depend.m4 easier to write.  Note that we *cannot* use a case
@@ -90,10 +98,24 @@ 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"
+   cygpath_u='sed s,\\\\,/,g'
    depmode=msvisualcpp
 fi
 
+if test "$depmode" = msvc7msys; then
+   # This is just like msvc7 but w/o cygpath translation.
+   # Just convert the backslash-escaped backslashes to single forward
+   # slashes to satisfy depend.m4
+   cygpath_u='sed s,\\\\,/,g'
+   depmode=msvc7
+fi
+
+if test "$depmode" = xlc; then
+   # IBM C/C++ Compilers xlc/xlC can output gcc-like dependency information.
+   gccflag=-qmakedep=gcc,-MF
+   depmode=gcc
+fi
+
 case "$depmode" in
 gcc3)
 ## gcc 3 implements dependency tracking that does exactly what
@@ -123,13 +145,17 @@ gcc3)
   ;;
 
 gcc)
+## Note that this doesn't just cater to obsosete pre-3.x GCC compilers.
+## but also to in-use compilers like IMB xlc/xlC and the HP C compiler.
+## (see the conditional assignment to $gccflag above).
 ## There are various ways to get dependency output from gcc.  Here's
 ## why we pick this rather obscure method:
 ## - Don't want to use -MD because we'd like the dependencies to end
 ##   up in a subdir.  Having to rename by hand is ugly.
 ##   (We might end up doing this anyway to support other compilers.)
 ## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
-##   -MM, not -M (despite what the docs say).
+##   -MM, not -M (despite what the docs say).  Also, it might not be
+##   supported by the other compilers which use the 'gcc' depmode.
 ## - Using -M directly means running the compiler twice (even worse
 ##   than renaming).
   if test -z "$gccflag"; then
@@ -148,20 +174,21 @@ gcc)
 ## The second -e expression handles DOS-style file names with drive letters.
   sed -e 's/^[^:]*: / /' \
       -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
-## This next piece of magic avoids the `deleted header file' problem.
+## This next piece of magic avoids the "deleted header file" problem.
 ## The problem is that when a header file which appears in a .P file
 ## is deleted, the dependency causes make to die (because there is
 ## typically no way to rebuild the header).  We avoid this by adding
 ## dummy dependencies for each header file.  Too bad gcc doesn't do
 ## this for us directly.
-  tr ' ' '
-' < "$tmpdepfile" |
-## Some versions of gcc put a space before the `:'.  On the theory
+  tr ' ' "$nl" < "$tmpdepfile" |
+## Some versions of gcc put a space before the ':'.  On the theory
 ## that the space means something, we add a space to the output as
-## well.
+## well.  hp depmode also adds that space, but also prefixes the VPATH
+## to the object.  Take care to not repeat it in the output.
 ## Some versions of the HPUX 10.20 sed can't process this invocation
 ## correctly.  Breaking it into two sed invocations is a workaround.
-    sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
+    sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \
+      | sed -e 's/$/ :/' >> "$depfile"
   rm -f "$tmpdepfile"
   ;;
 
@@ -193,18 +220,15 @@ sgi)
     # clever and replace this with sed code, as IRIX sed won't handle
     # lines with more than a fixed number of characters (4096 in
     # IRIX 6.2 sed, 8192 in IRIX 6.5).  We also remove comment lines;
-    # the IRIX cc adds comments like `#:fec' to the end of the
+    # the IRIX cc adds comments like '#:fec' to the end of the
     # dependency line.
-    tr ' ' '
-' < "$tmpdepfile" \
+    tr ' ' "$nl" < "$tmpdepfile" \
     | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
-    tr '
-' ' ' >> "$depfile"
+    tr "$nl" ' ' >> "$depfile"
     echo >> "$depfile"
 
     # The second pass generates a dummy entry for each header file.
-    tr ' ' '
-' < "$tmpdepfile" \
+    tr ' ' "$nl" < "$tmpdepfile" \
    | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
    >> "$depfile"
   else
@@ -216,10 +240,17 @@ sgi)
   rm -f "$tmpdepfile"
   ;;
 
+xlc)
+  # 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
+  ;;
+
 aix)
   # The C for AIX Compiler uses -M and outputs the dependencies
   # in a .u file.  In older versions, this file always lives in the
-  # current directory.  Also, the AIX compiler puts `$object:' at the
+  # current directory.  Also, the AIX compiler puts '$object:' at the
   # start of each line; $object doesn't have directory information.
   # Version 6 uses the directory in both cases.
   dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
@@ -249,12 +280,11 @@ aix)
     test -f "$tmpdepfile" && break
   done
   if test -f "$tmpdepfile"; then
-    # Each line is of the form `foo.o: dependent.h'.
+    # Each line is of the form 'foo.o: dependent.h'.
     # Do two passes, one to just change these to
-    # `$object: dependent.h' and one to simply `dependent.h:'.
+    # '$object: dependent.h' and one to simply 'dependent.h:'.
     sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
-    # That's a tab and a space in the [].
-    sed -e 's,^.*\.[a-z]*:[	 ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
+    sed -e 's,^.*\.[a-z]*:['"$tab"' ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
   else
     # The sourcefile does not contain any dependencies, so just
     # store a dummy comment line, to avoid errors with the Makefile
@@ -265,23 +295,26 @@ aix)
   ;;
 
 icc)
-  # Intel's C compiler understands `-MD -MF file'.  However on
-  #    icc -MD -MF foo.d -c -o sub/foo.o sub/foo.c
+  # Intel's C compiler anf tcc (Tiny C Compiler) understand '-MD -MF file'.
+  # However on
+  #    $CC -MD -MF foo.d -c -o sub/foo.o sub/foo.c
   # ICC 7.0 will fill foo.d with something like
   #    foo.o: sub/foo.c
   #    foo.o: sub/foo.h
-  # which is wrong.  We want:
+  # which is wrong.  We want
   #    sub/foo.o: sub/foo.c
   #    sub/foo.o: sub/foo.h
   #    sub/foo.c:
   #    sub/foo.h:
   # ICC 7.1 will output
   #    foo.o: sub/foo.c sub/foo.h
-  # and will wrap long lines using \ :
+  # and will wrap long lines using '\':
   #    foo.o: sub/foo.c ... \
   #     sub/foo.h ... \
   #     ...
-
+  # tcc 0.9.26 (FIXME still under development at the moment of writing)
+  # will emit a similar output, but also prepend the continuation lines
+  # with horizontal tabulation characters.
   "$@" -MD -MF "$tmpdepfile"
   stat=$?
   if test $stat -eq 0; then :
@@ -290,6 +323,85 @@ icc)
     exit $stat
   fi
   rm -f "$depfile"
+  # Each line is of the form 'foo.o: dependent.h',
+  # or 'foo.o: dep1.h dep2.h \', or ' dep3.h dep4.h \'.
+  # Do two passes, one to just change these to
+  # '$object: dependent.h' and one to simply 'dependent.h:'.
+  sed -e "s/^[ $tab][ $tab]*/  /" -e "s,^[^:]*:,$object :," \
+    < "$tmpdepfile" > "$depfile"
+  sed '
+    s/[ '"$tab"'][ '"$tab"']*/ /g
+    s/^ *//
+    s/ *\\*$//
+    s/^[^:]*: *//
+    /^$/d
+    /:$/d
+    s/$/ :/
+  ' < "$tmpdepfile" >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+## The order of this option in the case statement is important, since the
+## shell code in configure will try each of these formats in the order
+## listed in this file.  A plain '-MD' option would be understood by many
+## compilers, so we must ensure this comes after the gcc and icc options.
+pgcc)
+  # Portland's C compiler understands '-MD'.
+  # Will always output deps to 'file.d' where file is the root name of the
+  # source file under compilation, even if file resides in a subdirectory.
+  # The object file name does not affect the name of the '.d' file.
+  # pgcc 10.2 will output
+  #    foo.o: sub/foo.c sub/foo.h
+  # and will wrap long lines using '\' :
+  #    foo.o: sub/foo.c ... \
+  #     sub/foo.h ... \
+  #     ...
+  dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
+  test "x$dir" = "x$object" && dir=
+  # Use the source, not the object, to determine the base name, since
+  # that's sadly what pgcc will do too.
+  base=`echo "$source" | sed -e 's|^.*/||' -e 's/\.[-_a-zA-Z0-9]*$//'`
+  tmpdepfile="$base.d"
+
+  # For projects that build the same source file twice into different object
+  # files, the pgcc approach of using the *source* file root name can cause
+  # problems in parallel builds.  Use a locking strategy to avoid stomping on
+  # the same $tmpdepfile.
+  lockdir="$base.d-lock"
+  trap "echo '$0: caught signal, cleaning up...' >&2; rm -rf $lockdir" 1 2 13 15
+  numtries=100
+  i=$numtries
+  while test $i -gt 0 ; do
+    # mkdir is a portable test-and-set.
+    if mkdir $lockdir 2>/dev/null; then
+      # This process acquired the lock.
+      "$@" -MD
+      stat=$?
+      # Release the lock.
+      rm -rf $lockdir
+      break
+    else
+      ## the lock is being held by a different process,
+      ## wait until the winning process is done or we timeout
+      while test -d $lockdir && test $i -gt 0; do
+        sleep 1
+        i=`expr $i - 1`
+      done
+    fi
+    i=`expr $i - 1`
+  done
+  trap - 1 2 13 15
+  if test $i -le 0; then
+    echo "$0: failed to acquire lock after $numtries attempts" >&2
+    echo "$0: check lockdir '$lockdir'" >&2
+    exit 1
+  fi
+
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
   # Each line is of the form `foo.o: dependent.h',
   # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
   # Do two passes, one to just change these to
@@ -334,7 +446,7 @@ hp2)
   done
   if test -f "$tmpdepfile"; then
     sed -e "s,^.*\.[a-z]*:,$object:," "$tmpdepfile" > "$depfile"
-    # Add `dependent.h:' lines.
+    # Add 'dependent.h:' lines.
     sed -ne '2,${
 	       s/^ *//
 	       s/ \\*$//
@@ -349,9 +461,9 @@ hp2)
 
 tru64)
    # The Tru64 compiler uses -MD to generate dependencies as a side
-   # effect.  `cc -MD -o foo.o ...' puts the dependencies into `foo.o.d'.
+   # effect.  'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'.
    # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
-   # dependencies in `foo.d' instead, so we check for that too.
+   # dependencies in 'foo.d' instead, so we check for that too.
    # Subdirectories are respected.
    dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
    test "x$dir" = "x$object" && dir=
@@ -397,14 +509,59 @@ tru64)
    done
    if test -f "$tmpdepfile"; then
       sed -e "s,^.*\.[a-z]*:,$object:," < "$tmpdepfile" > "$depfile"
-      # That's a tab and a space in the [].
-      sed -e 's,^.*\.[a-z]*:[	 ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
+      sed -e 's,^.*\.[a-z]*:['"$tab"' ]*,,' -e 's,$,:,' < "$tmpdepfile" >> "$depfile"
    else
       echo "#dummy" > "$depfile"
    fi
    rm -f "$tmpdepfile"
    ;;
 
+msvc7)
+  if test "$libtool" = yes; then
+    showIncludes=-Wc,-showIncludes
+  else
+    showIncludes=-showIncludes
+  fi
+  "$@" $showIncludes > "$tmpdepfile"
+  stat=$?
+  grep -v '^Note: including file: ' "$tmpdepfile"
+  if test "$stat" = 0; then :
+  else
+    rm -f "$tmpdepfile"
+    exit $stat
+  fi
+  rm -f "$depfile"
+  echo "$object : \\" > "$depfile"
+  # The first sed program below extracts the file names and escapes
+  # backslashes for cygpath.  The second sed program outputs the file
+  # name when reading, but also accumulates all include files in the
+  # hold buffer in order to output them again at the end.  This only
+  # works with sed implementations that can handle large buffers.
+  sed < "$tmpdepfile" -n '
+/^Note: including file:  *\(.*\)/ {
+  s//\1/
+  s/\\/\\\\/g
+  p
+}' | $cygpath_u | sort -u | sed -n '
+s/ /\\ /g
+s/\(.*\)/'"$tab"'\1 \\/p
+s/.\(.*\) \\/\1:/
+H
+$ {
+  s/.*/'"$tab"'/
+  G
+  p
+}' >> "$depfile"
+  rm -f "$tmpdepfile"
+  ;;
+
+msvc7msys)
+  # 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
+  ;;
+
 #nosideeffect)
   # This comment above is used by automake to tell side-effect
   # dependency tracking mechanisms from slower ones.
@@ -422,7 +579,7 @@ dashmstdout)
     shift
   fi
 
-  # Remove `-o $object'.
+  # Remove '-o $object'.
   IFS=" "
   for arg
   do
@@ -442,15 +599,14 @@ dashmstdout)
   done
 
   test -z "$dashmflag" && dashmflag=-M
-  # Require at least two characters before searching for `:'
+  # Require at least two characters before searching for ':'
   # in the target name.  This is to cope with DOS-style filenames:
-  # a dependency such as `c:/foo/bar' could be seen as target `c' otherwise.
+  # a dependency such as 'c:/foo/bar' could be seen as target 'c' otherwise.
   "$@" $dashmflag |
-    sed 's:^[  ]*[^: ][^:][^:]*\:[    ]*:'"$object"'\: :' > "$tmpdepfile"
+    sed 's:^['"$tab"' ]*[^:'"$tab"' ][^:][^:]*\:['"$tab"' ]*:'"$object"'\: :' > "$tmpdepfile"
   rm -f "$depfile"
   cat < "$tmpdepfile" > "$depfile"
-  tr ' ' '
-' < "$tmpdepfile" | \
+  tr ' ' "$nl" < "$tmpdepfile" | \
 ## Some versions of the HPUX 10.20 sed can't process this invocation
 ## correctly.  Breaking it into two sed invocations is a workaround.
     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
@@ -503,9 +659,10 @@ makedepend)
   touch "$tmpdepfile"
   ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
   rm -f "$depfile"
-  cat < "$tmpdepfile" > "$depfile"
-  sed '1,2d' "$tmpdepfile" | tr ' ' '
-' | \
+  # makedepend may prepend the VPATH from the source file name to the object.
+  # No need to regex-escape $object, excess matching of '.' is harmless.
+  sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile"
+  sed '1,2d' "$tmpdepfile" | tr ' ' "$nl" | \
 ## Some versions of the HPUX 10.20 sed can't process this invocation
 ## correctly.  Breaking it into two sed invocations is a workaround.
     sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' | sed -e 's/$/ :/' >> "$depfile"
@@ -525,7 +682,7 @@ cpp)
     shift
   fi
 
-  # Remove `-o $object'.
+  # Remove '-o $object'.
   IFS=" "
   for arg
   do
@@ -594,8 +751,8 @@ msvisualcpp)
   sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
   rm -f "$depfile"
   echo "$object : \\" > "$depfile"
-  sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::	\1 \\:p' >> "$depfile"
-  echo "	" >> "$depfile"
+  sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::'"$tab"'\1 \\:p' >> "$depfile"
+  echo "$tab" >> "$depfile"
   sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
   rm -f "$tmpdepfile"
   ;;

example.c

@@ -2,11 +2,10 @@
 #if 0 /* in case someone actually tries to compile this */
 
 /* example.c - an example of using libpng
- * Last changed in libpng 1.5.4 [July 7, 2011]
- * This file has been placed in the public domain by the authors.
- * Maintained 1998-2011 Glenn Randers-Pehrson
- * Maintained 1996, 1997 Andreas Dilger)
- * Written 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ * Last changed in libpng 1.5.10 [March 8, 2012]
+ * Maintained 1998-2012 Glenn Randers-Pehrson
+ * Maintained 1996, 1997 Andreas Dilger
+ * Written 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
  */
 
 /* This is an example of how to use libpng to read and write PNG files.
@@ -14,6 +13,8 @@
  * read it, do so first.  This was designed to be a starting point of an
  * implementation.  This is not officially part of libpng, is hereby placed
  * in the public domain, and therefore does not require a copyright notice.
+ * To the extent possible under law, the authors have waived all copyright and
+ * related or neighboring rights to this file.
  *
  * This file does not currently compile, because it is missing certain
  * parts, like allocating memory to hold an image.  You will have to
@@ -341,11 +342,16 @@ void read_png(FILE *fp, unsigned int sig_read)  /* File is already open */
    /* Add filler (or alpha) byte (before/after each RGB triplet) */
    png_set_filler(png_ptr, 0xff, PNG_FILLER_AFTER);
 
+#ifdef PNG_READ_INTERLACING_SUPPORTED
    /* Turn on interlace handling.  REQUIRED if you are not using
     * png_read_image().  To see how to handle interlacing passes,
     * see the png_read_row() method below:
     */
    number_passes = png_set_interlace_handling(png_ptr);
+#else
+   number_passes = 1;
+#endif /* PNG_READ_INTERLACING_SUPPORTED */
+
 
    /* Optional call to gamma correct and add the background to the palette
     * and update info structure.  REQUIRED if you are expecting libpng to
@@ -527,6 +533,7 @@ row_callback(png_structp png_ptr, png_bytep new_row,
     */
    png_bytep old_row = ((png_bytep *)our_data)[row_num];
 
+#ifdef PNG_READ_INTERLACING_SUPPORTED
    /* If both rows are allocated then copy the new row
     * data to the corresponding row data.
     */
@@ -555,6 +562,7 @@ row_callback(png_structp png_ptr, png_bytep new_row,
     * to pass the current row as new_row, and the function will combine
     * the old row and the new row.
     */
+#endif /* PNG_READ_INTERLACING_SUPPORTED */
 }
 
 end_callback(png_structp png_ptr, png_infop info)
@@ -687,25 +695,38 @@ void write_png(char *file_name /* , ... other image information ... */)
    png_set_gAMA(png_ptr, info_ptr, gamma);
 
    /* Optionally write comments into the image */
-   text_ptr[0].key = "Title";
-   text_ptr[0].text = "Mona Lisa";
-   text_ptr[0].compression = PNG_TEXT_COMPRESSION_NONE;
-   text_ptr[0].itxt_length = 0;
-   text_ptr[0].lang = NULL;
-   text_ptr[0].lang_key = NULL;
-   text_ptr[1].key = "Author";
-   text_ptr[1].text = "Leonardo DaVinci";
-   text_ptr[1].compression = PNG_TEXT_COMPRESSION_NONE;
-   text_ptr[1].itxt_length = 0;
-   text_ptr[1].lang = NULL;
-   text_ptr[1].lang_key = NULL;
-   text_ptr[2].key = "Description";
-   text_ptr[2].text = "<long text>";
-   text_ptr[2].compression = PNG_TEXT_COMPRESSION_zTXt;
-   text_ptr[2].itxt_length = 0;
-   text_ptr[2].lang = NULL;
-   text_ptr[2].lang_key = NULL;
-   png_set_text(png_ptr, info_ptr, text_ptr, 3);
+   {
+      png_text text_ptr[3];
+
+      char key0[]="Title";
+      char text0[]="Mona Lisa";
+      text_ptr[0].key = key0;
+      text_ptr[0].text = text0;
+      text_ptr[0].compression = PNG_TEXT_COMPRESSION_NONE;
+      text_ptr[0].itxt_length = 0;
+      text_ptr[0].lang = NULL;
+      text_ptr[0].lang_key = NULL;
+
+      char key1[]="Author";
+      char text1[]="Leonardo DaVinci";
+      text_ptr[1].key = key1;
+      text_ptr[1].text = text1;
+      text_ptr[1].compression = PNG_TEXT_COMPRESSION_NONE;
+      text_ptr[1].itxt_length = 0;
+      text_ptr[1].lang = NULL;
+      text_ptr[1].lang_key = NULL;
+
+      char key2[]="Description";
+      char text2[]="<long text>";
+      text_ptr[2].key = key2;
+      text_ptr[2].text = text2;
+      text_ptr[2].compression = PNG_TEXT_COMPRESSION_zTXt;
+      text_ptr[2].itxt_length = 0;
+      text_ptr[2].lang = NULL;
+      text_ptr[2].lang_key = NULL;
+
+      png_set_text(write_ptr, write_info_ptr, text_ptr, 3);
+   }
 
    /* Other optional chunks like cHRM, bKGD, tRNS, tIME, oFFs, pHYs */
 
@@ -778,12 +799,16 @@ void write_png(char *file_name /* , ... other image information ... */)
     * use the first method if you aren't handling interlacing yourself.
     */
    png_uint_32 k, height, width;
-   png_byte image[height][width*bytes_per_pixel];
+
+   /* In this example, "image" is a one-dimensional array of bytes */
+   png_byte image[height*width*bytes_per_pixel];
+
    png_bytep row_pointers[height];
 
    if (height > PNG_UINT_32_MAX/png_sizeof(png_bytep))
      png_error (png_ptr, "Image is too tall to process in memory");
 
+   /* Set up pointers into your "image" byte array */
    for (k = 0; k < height; k++)
      row_pointers[k] = image + k*width*bytes_per_pixel;
 

install-sh

@@ -1,7 +1,7 @@
 #!/bin/sh
 # install - install a program, script, or datafile
 
-scriptversion=2009-04-28.21; # UTC
+scriptversion=2011-11-20.07; # UTC
 
 # This originates from X11R5 (mit/util/scripts/install.sh), which was
 # later released in X11R6 (xc/config/util/install.sh) with the
@@ -35,7 +35,7 @@ scriptversion=2009-04-28.21; # UTC
 # FSF changes to this file are in the public domain.
 #
 # Calling this script install-sh is preferred over install.sh, to prevent
-# `make' implicit rules from creating a file called install from it
+# 'make' implicit rules from creating a file called install from it
 # when there is no Makefile.
 #
 # This script is compatible with the BSD install script, but was written
@@ -156,6 +156,10 @@ while test $# -ne 0; do
     -s) stripcmd=$stripprog;;
 
     -t) dst_arg=$2
+	# Protect names problematic for 'test' and other utilities.
+	case $dst_arg in
+	  -* | [=\(\)!]) dst_arg=./$dst_arg;;
+	esac
 	shift;;
 
     -T) no_target_directory=true;;
@@ -186,6 +190,10 @@ if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then
     fi
     shift # arg
     dst_arg=$arg
+    # Protect names problematic for 'test' and other utilities.
+    case $dst_arg in
+      -* | [=\(\)!]) dst_arg=./$dst_arg;;
+    esac
   done
 fi
 
@@ -194,13 +202,17 @@ if test $# -eq 0; then
     echo "$0: no input file specified." >&2
     exit 1
   fi
-  # It's OK to call `install-sh -d' without argument.
+  # It's OK to call 'install-sh -d' without argument.
   # This can happen when creating conditional directories.
   exit 0
 fi
 
 if test -z "$dir_arg"; then
-  trap '(exit $?); exit' 1 2 13 15
+  do_exit='(exit $ret); exit $ret'
+  trap "ret=129; $do_exit" 1
+  trap "ret=130; $do_exit" 2
+  trap "ret=141; $do_exit" 13
+  trap "ret=143; $do_exit" 15
 
   # Set umask so as not to create temps with too-generous modes.
   # However, 'strip' requires both read and write access to temps.
@@ -228,9 +240,9 @@ fi
 
 for src
 do
-  # Protect names starting with `-'.
+  # Protect names problematic for 'test' and other utilities.
   case $src in
-    -*) src=./$src;;
+    -* | [=\(\)!]) src=./$src;;
   esac
 
   if test -n "$dir_arg"; then
@@ -252,12 +264,7 @@ do
       echo "$0: no destination specified." >&2
       exit 1
     fi
-
     dst=$dst_arg
-    # Protect names starting with `-'.
-    case $dst in
-      -*) dst=./$dst;;
-    esac
 
     # If destination is a directory, append the input filename; won't work
     # if double slashes aren't ignored.
@@ -347,7 +354,7 @@ do
 	      if test -z "$dir_arg" || {
 		   # Check for POSIX incompatibilities with -m.
 		   # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
-		   # other-writeable bit of parent directory when it shouldn't.
+		   # other-writable bit of parent directory when it shouldn't.
 		   # FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
 		   ls_ld_tmpdir=`ls -ld "$tmpdir"`
 		   case $ls_ld_tmpdir in
@@ -385,7 +392,7 @@ do
 
       case $dstdir in
 	/*) prefix='/';;
-	-*) prefix='./';;
+	[-=\(\)!]*) prefix='./';;
 	*)  prefix='';;
       esac
 
@@ -403,7 +410,7 @@ do
 
       for d
       do
-	test -z "$d" && continue
+	test X"$d" = X && continue
 
 	prefix=$prefix$d
 	if test -d "$prefix"; then

libpng-manual.txt

@@ -1,9 +1,9 @@
-libpng-manual.txt - A description on how to use and modify libpng
+Libpng-manual.txt - A description on how to use and modify libpng
 
- libpng version 1.5.6beta03 - September 28, 2011
+ libpng version 1.5.14rc01 - January 17, 2013
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
- Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ Copyright (c) 1998-2012 Glenn Randers-Pehrson
 
  This document is released under the libpng license.
  For conditions of distribution and use, see the disclaimer
@@ -11,9 +11,9 @@ libpng-manual.txt - A description on how to use and modify libpng
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.5.6beta03 - September 28, 2011
+ libpng versions 0.97, January 1998, through 1.5.14rc01 - January 17, 2013
  Updated and distributed by Glenn Randers-Pehrson
- Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ Copyright (c) 1998-2012 Glenn Randers-Pehrson
 
  libpng 1.0 beta 6  version 0.96 May 28, 1997
  Updated and distributed by Andreas Dilger
@@ -48,7 +48,7 @@ of reducing the amount of time and effort it takes to support the PNG
 file format in application programs.
 
 The PNG specification (second edition), November 2003, is available as
-a W3C Recommendation and as an ISO Standard (ISO/IEC 15948:2003 (E)) at
+a W3C Recommendation and as an ISO Standard (ISO/IEC 15948:2004 (E)) at
 <http://www.w3.org/TR/2003/REC-PNG-20031110/
 The W3C and ISO documents have identical technical content.
 
@@ -141,8 +141,8 @@ APIs.  Most of these are fairly obvious; for example types corresponding
 to integers of particular sizes and types for passing color values.
 
 One exception is how non-integral numbers are handled.  For application
-convenience most APIs that take such numbers have C (double) arguments,
-however internally PNG, and libpng, use 32 bit signed integers and encode
+convenience most APIs that take such numbers have C (double) arguments;
+however, internally PNG, and libpng, use 32 bit signed integers and encode
 the value by multiplying by 100,000.  As of libpng 1.5.0 a convenience
 macro PNG_FP_1 is defined in png.h along with a type (png_fixed_point)
 which is simply (png_int_32).
@@ -723,11 +723,11 @@ Libpng only supports composing onto a single color (using png_set_background;
 see below).  Otherwise you must do the composition yourself and, in this case,
 you may need to call png_set_alpha_mode:
 
-#if PNG_LIBPNG_VER >= 10504
-   png_set_alpha_mode(png_ptr, mode, screen_gamma);
-#else
-   png_set_gamma(png_ptr, screen_gamma, 1.0/screen_gamma);
-#endif
+    #if PNG_LIBPNG_VER >= 10504
+       png_set_alpha_mode(png_ptr, mode, screen_gamma);
+    #else
+       png_set_gamma(png_ptr, screen_gamma, 1.0/screen_gamma);
+    #endif
 
 The screen_gamma value is the same as the argument to png_set_gamma; however,
 how it affects the output depends on the mode.  png_set_alpha_mode() sets the
@@ -799,7 +799,7 @@ the screen_gamma value.  Pixels with alpha less than 1.0
 will still have linear components.
 
 Use this format if you have control over your
-compositing software and do don't do other arithmetic
+compositing software and so don't do other arithmetic
 (such as scaling) on the data you get from libpng.  Your
 compositing software can simply copy opaque pixels to
 the output but still has linear values for the
@@ -1130,6 +1130,11 @@ 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.
 
+The colorspace data from gAMA, cHRM, sRGB, iCCP, and sBIT chunks
+is simply returned to give the application information about how the
+image was encoded.  Libpng itself only does transformations using the file
+gamma when combining semitransparent pixels with the background color.
+
     png_get_PLTE(png_ptr, info_ptr, &palette,
                      &num_palette);
 
@@ -1141,14 +1146,14 @@ pointer into the info_ptr is returned for any complex types.
     png_get_gAMA(png_ptr, info_ptr, &file_gamma);
     png_get_gAMA_fixed(png_ptr, info_ptr, &int_file_gamma);
 
-    file_gamma     - the gamma at which the file is
+    file_gamma     - the gamma at which the file was
                      written (PNG_INFO_gAMA)
 
     int_file_gamma - 100,000 times the gamma at which the
                      file is written
 
-    png_get_cHRM(png_ptr, info_ptr,  &white_x, &white_y, &red_x, &red_y,
-                     &green_x, &green_y, &blue_x, &blue_y)
+    png_get_cHRM(png_ptr, info_ptr,  &white_x, &white_y, &red_x,
+                     &red_y, &green_x, &green_y, &blue_x, &blue_y)
     png_get_cHRM_XYZ(png_ptr, info_ptr, &red_X, &red_Y, &red_Z, &green_X,
                      &green_Y, &green_Z, &blue_X, &blue_Y, &blue_Z)
     png_get_cHRM_fixed(png_ptr, info_ptr, &int_white_x, &int_white_y,
@@ -1159,8 +1164,9 @@ pointer into the info_ptr is returned for any complex types.
                      &int_blue_X, &int_blue_Y, &int_blue_Z)
 
     {white,red,green,blue}_{x,y}
-                     A color space encoding specified using the chromaticities
-                     of the end points and the white point. (PNG_INFO_cHRM)
+                     A color space encoding specified using the
+                     chromaticities of the end points and the
+                     white point. (PNG_INFO_cHRM)
 
     {red,green,blue}_{X,Y,Z}
                      A color space encoding specified using the encoding end
@@ -1265,10 +1271,13 @@ pointer into the info_ptr is returned for any complex types.
                          (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.
-    Prior to libpng-1.4.0, the default build was
-    without iTXt chunk support.
+    members of the text_ptr structure only exist when the
+    library is built with iTXt chunk support.  Prior to
+    libpng-1.4.0 the library was built by default without
+    iTXt support. Also note that when iTXt is supported,
+    they contain NULL pointers when the "compression"
+    field contains PNG_TEXT_COMPRESSION_NONE or
+    PNG_TEXT_COMPRESSION_zTXt.
 
     num_text       - number of comments (same as
                      num_comments; you can put NULL here
@@ -1568,17 +1577,19 @@ Within the matrix,
      "A" means the transformation is obtained by png_set_add_alpha().
      "X" means the transformation is obtained by png_set_expand().
      "1" means the transformation is obtained by
-         png_set_expand_gray_1_2_4_to_8() (and by png_set_expand() if there
-         is no transparency in the original or the final format).
+         png_set_expand_gray_1_2_4_to_8() (and by png_set_expand()
+         if there is no transparency in the original or the final
+         format).
      "C" means the transformation is obtained by png_set_gray_to_rgb().
      "G" means the transformation is obtained by png_set_rgb_to_gray().
      "P" means the transformation is obtained by
          png_set_expand_palette_to_rgb().
      "p" means the transformation is obtained by png_set_packing().
      "Q" means the transformation is obtained by png_set_quantize().
-     "T" means the transformation is obtained by png_set_tRNS_to_alpha().
-     "B" means the transformation is obtained by png_set_background(), or
-         png_strip_alpha().
+     "T" means the transformation is obtained by
+         png_set_tRNS_to_alpha().
+     "B" means the transformation is obtained by
+         png_set_background(), or png_strip_alpha().
 
 When an entry has multiple transforms listed all are required to cause the
 right overall transformation.  When two transforms are separated by a comma
@@ -1663,8 +1674,8 @@ with alpha.
 
     if (color_type == PNG_COLOR_TYPE_RGB ||
         color_type == PNG_COLOR_TYPE_RGB_ALPHA)
-       png_set_rgb_to_gray(png_ptr, error_action, double red_weight,
-          double green_weight);
+       png_set_rgb_to_gray(png_ptr, error_action,
+          double red_weight, double green_weight);
 
     error_action = 1: silently do the conversion
 
@@ -1686,7 +1697,8 @@ with alpha.
 In the corresponding fixed point API the red_weight and green_weight values are
 simply scaled by 100,000:
 
-    png_set_rgb_to_gray(png_ptr, error_action, png_fixed_point red_weight,
+    png_set_rgb_to_gray(png_ptr, error_action,
+       png_fixed_point red_weight,
        png_fixed_point green_weight);
 
 If you have set error_action = 1 or 2, you can
@@ -1730,7 +1742,7 @@ the current display (e.g., the background color from a web page).  You
 need to tell libpng how the color is represented, both the format of the
 component values in the color (the number of bits) and the gamma encoding of the
 color.  The function takes two arguments, background_gamma_mode and need_expand
-to convey this information, however only two combinations are likely to be
+to convey this information; however, only two combinations are likely to be
 useful:
 
     png_color_16 my_background;
@@ -2024,7 +2036,7 @@ the second parameter NULL.
 
 If you don't want libpng to handle the interlacing details, just call
 png_read_rows() PNG_INTERLACE_ADAM7_PASSES times to read in all the images.
-Each of the images is a valid image by itself, however you will almost
+Each of the images is a valid image by itself; however, you will almost
 certainly need to distribute the pixels from each sub-image to the
 correct place.  This is where everything gets very tricky.
 
@@ -2181,7 +2193,7 @@ 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,
 or so that it will free data that was allocated by the user with png_malloc()
-or png_zalloc() and passed in via a png_set_*() function, with
+or png_calloc() and passed in via a png_set_*() function, with
 
     png_data_freer(png_ptr, info_ptr, freer, mask)
 
@@ -2202,7 +2214,7 @@ or png_destroy_*() is supposed to free the data.  When the user assumes
 responsibility for libpng-allocated data, the application must use
 png_free() to free it, and when the user transfers responsibility to libpng
 for data that the user has allocated, the user must have used png_malloc()
-or png_zalloc() to allocate it.
+or png_calloc() to allocate it.
 
 If you allocated your row_pointers in a single block, as suggested above in
 the description of the high level read interface, you must not transfer
@@ -2849,11 +2861,15 @@ 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.
-    Prior to libpng-1.4.0 the library was built by default
-    without iTXt support.
+    members of the text_ptr structure only exist when the
+    library is built with iTXt chunk support.  Prior to
+    libpng-1.4.0 the library was built by default without
+    iTXt support. Also note that when iTXt is supported,
+    they contain NULL pointers when the "compression"
+    field contains PNG_TEXT_COMPRESSION_NONE or
+    PNG_TEXT_COMPRESSION_zTXt.
 
     num_text       - number of comments
 
@@ -3016,8 +3032,8 @@ tEXt chunk use RFC 1123 format dates (e.g. "22 May 1997 18:07:10 GMT"),
 although this isn't a requirement.  Unlike the tIME chunk, the
 "Creation Time" tEXt chunk is not expected to be automatically changed
 by the software.  To facilitate the use of RFC 1123 dates, a function
-png_convert_to_rfc1123(png_timep) is provided to convert from PNG
-time to an RFC 1123 format string.
+png_convert_to_rfc1123(png_ptr, png_timep) is provided to convert
+from PNG time to an RFC 1123 format string.
 
 Writing unknown chunks
 
@@ -3379,7 +3395,7 @@ png_destroy_write_struct().
 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,
 or so that it will free data that was allocated by the user with png_malloc()
-or png_zalloc() and passed in via a png_set_*() function, with
+or png_calloc() and passed in via a png_set_*() function, with
 
     png_data_freer(png_ptr, info_ptr, freer, mask)
 
@@ -3415,7 +3431,7 @@ When the user assumes responsibility for libpng-allocated data, the
 application must use
 png_free() to free it, and when the user transfers responsibility to libpng
 for data that the user has allocated, the user must have used png_malloc()
-or png_zalloc() to allocate it.
+or png_calloc() to allocate it.
 
 If you allocated text_ptr.text, text_ptr.lang, and text_ptr.translated_keyword
 separately, do not transfer responsibility for freeing text_ptr to libpng,
@@ -3443,12 +3459,13 @@ 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(), png_calloc(),
-and png_free().  These currently just call the standard C functions.
-png_calloc() calls png_malloc() and then clears the newly
-allocated memory to zero.  There is limited support for certain systems
-with segmented memory architectures and the types of pointers declared by
-png.h match this; you will have to use appropriate pointers in your
-application.  Since it is
+and png_free().  The png_malloc() and png_free() functions currently just
+call the standard C functions and png_calloc() calls png_malloc() and then
+clears the newly allocated memory to zero; note that png_calloc(png_ptr, size)
+is not the same as the calloc(number, size) function provided by stdlib.h.
+There is limited support for certain systems with segmented memory
+architectures and the types of pointers declared by png.h match this; you
+will have to use appropriate pointers in your application.  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
@@ -3678,7 +3695,7 @@ available to set these separately for non-IDAT
 compressed chunks such as zTXt, iTXt, and iCCP:
 
     #include zlib.h
-    #if PNG_LIBPNG_VER <= 10504
+    #if PNG_LIBPNG_VER >= 10504
     png_set_text_compression_level(png_ptr, level);
 
     png_set_text_compression_mem_level(png_ptr, level);
@@ -4077,8 +4094,8 @@ png_get_mmx_bitdepth_threshold(), png_get_mmx_rowbytes_threshold(),
 png_set_asm_flags(), and png_mmx_supported()
 
 We removed the obsolete png_check_sig(), png_memcpy_check(), and
-png_memset_check() functions.  Instead use !png_sig_cmp(), memcpy(),
-and memset(), respectively.
+png_memset_check() functions.  Instead use !png_sig_cmp(), png_memcpy(),
+and png_memset(), respectively.
 
 The function png_set_gray_1_2_4_to_8() was removed. It has been
 deprecated since libpng-1.0.18 and 1.2.9, when it was replaced with
@@ -4115,7 +4132,9 @@ png_set_strip_error_numbers() was removed from the library by default.
 
 The png_zalloc() and png_zfree() functions are no longer exported.
 The png_zalloc() function no longer zeroes out the memory that it
-allocates.
+allocates.  Applications that called png_zalloc(png_ptr, number, size)
+can call png_calloc(png_ptr, number*size) instead, and can call
+png_free() instead of png_zfree().
 
 Support for dithering was disabled by default in libpng-1.4.0, because
 it has not been well tested and doesn't actually "dither".
@@ -4135,12 +4154,22 @@ X.  Changes to Libpng from version 1.4.x to 1.5.x
 From libpng-1.4.0 until 1.4.4, the png_get_uint_16 macro (but not the
 function) incorrectly returned a value of type png_uint_32.
 
+Checking for invalid palette index on read or write was added at libpng
+1.5.10.  When an invalid index is found, libpng issues a benign error.
+This is enabled by default but can be disabled in each png_ptr with
+
+   png_set_check_for_invalid_index(png_ptr, allowed);
+
+      allowed  - one of
+                 0: disable
+                 1: enable
+
 A. Changes that affect users of libpng
 
 There are no substantial API changes between the non-deprecated parts of
-the 1.4.5 API and the 1.5.0 API, however the ability to directly access
-the main libpng control structures, png_struct and png_info, deprecated
-in earlier versions of libpng, has been completely removed from
+the 1.4.5 API and the 1.5.0 API; however, the ability to directly access
+members of the main libpng control structures, png_struct and png_info,
+deprecated in earlier versions of libpng, has been completely removed from
 libpng 1.5.
 
 We no longer include zlib.h in png.h.  Applications that need access
@@ -4148,9 +4177,12 @@ to information in zlib.h will need to add the '#include "zlib.h"'
 directive.  It does not matter whether it is placed prior to or after
 the '"#include png.h"' directive.
 
-We moved the png_strcpy(), png_strncpy(), png_strlen(), png_memcpy(),
-png_memcmp(), png_sprintf, and png_memcpy() macros into a private
-header file (pngpriv.h) that is not accessible to applications.
+The png_sprintf(), png_strcpy(), and png_strncpy() macros are no longer used
+and were removed.
+
+We moved the png_strlen(), png_memcpy(), png_memset(), and png_memcmp()
+macros into a private header file (pngpriv.h) that is not accessible to
+applications.
 
 In png_get_iCCP, the type of "profile" was changed from png_charpp
 to png_bytepp, and in png_set_iCCP, from png_charp to png_const_bytep.
@@ -4253,16 +4285,30 @@ PNG_USER_WIDTH_MAX and PNG_USER_HEIGHT_MAX, although this document said
 that it could be used to override them.  Now this function will reduce or
 increase the limits.
 
+Starting in libpng-1.5.10, the user limits can be set en masse with the
+configuration option PNG_SAFE_LIMITS_SUPPORTED.  If this option is enabled,
+a set of "safe" limits is applied in pngpriv.h.  These can be overridden by
+application calls to png_set_user_limits(), png_set_user_chunk_cache_max(),
+and/or png_set_user_malloc_max() that increase or decrease the limits.  Also,
+in libpng-1.5.10 the default width and height limits were increased
+from 1,000,000 to 0x7ffffff (i.e., made unlimited).  Therefore, the
+limits are now
+                               default      safe
+   png_user_width_max        0x7fffffff    1,000,000
+   png_user_height_max       0x7fffffff    1,000,000
+   png_user_chunk_cache_max  0 (unlimited)   128
+   png_user_chunk_malloc_max 0 (unlimited) 8,000,000
+
 B. Changes to the build and configuration of libpng
 
 Details of internal changes to the library code can be found in the CHANGES
 file and in the GIT repository logs.  These will be of no concern to the vast
-majority of library users or builders, however the few who configure libpng
+majority of library users or builders; however, the few who configure libpng
 to a non-default feature set may need to change how this is done.
 
 There should be no need for library builders to alter build scripts if
 these use the distributed build support - configure or the makefiles -
-however users of the makefiles may care to update their build scripts
+however, users of the makefiles may care to update their build scripts
 to build pnglibconf.h where the corresponding makefile does not do so.
 
 Building libpng with a non-default configuration has changed completely.
@@ -4368,7 +4414,7 @@ merely stops the function from being exported.
 PNG_FLOATING_ARITHMETIC_SUPPORTED chooses between the internal floating
 point implementation or the fixed point one.  Typically the fixed point
 implementation is larger and slower than the floating point implementation
-on a system that supports floating point, however it may be faster on a
+on a system that supports floating point; however, it may be faster on a
 system which lacks floating point hardware and therefore uses a software
 emulation.
 
@@ -4397,7 +4443,7 @@ pngconf.h no longer includes pngusr.h, therefore pngusr.h is ignored after the
 build of pnglibconf.h and it is never included in an application build.
 
 The rarely used alternative of adding a list of feature macros to the
-CFLAGS setting in the build also still works, however the macros will be
+CFLAGS setting in the build also still works; however, the macros will be
 copied to pnglibconf.h and this may produce macro redefinition warnings
 when the individual C files are compiled.
 
@@ -4535,11 +4581,11 @@ pngtest) appear in
 pngpriv.h
 above the comment that says
 
-  /* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */
+  /* Maintainer: Put new private prototypes here ^ */
 
 To avoid polluting the global namespace, the names of all exported
-functions and variables begin with  "png_", and all publicly visible C
-preprocessor macros begin with "PNG_".  We request that applications that
+functions and variables begin with "png_", and all publicly visible C
+preprocessor macros begin with "PNG".  We request that applications that
 use libpng *not* begin any of their own symbols with either of these strings.
 
 We put a space after each comma and after each semicolon
@@ -4552,9 +4598,12 @@ left parenthesis that follows it:
     for (i = 2; i > 0; --i)
        y[i] = a(x) + (int)b;
 
-We prefer #ifdef and #ifndef to #if defined() and if !defined()
+We prefer #ifdef and #ifndef to #if defined() and #if !defined()
 when there is only one macro being tested.
 
+We prefer to express integers that are used as bit masks in hex format,
+with an even number of lower-case hex digits (e.g., 0x00, 0xff, 0x0100).
+
 We do not use the TAB character for indentation in the C sources.
 
 Lines do not exceed 80 characters.
@@ -4563,25 +4612,25 @@ Other rules can be inferred by inspecting the libpng source.
 
 XIV. Y2K Compliance in libpng
 
-September 28, 2011
+January 17, 2013
 
 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 1.5.6beta03 are Y2K compliant.  It is my belief that earlier
+upward through 1.5.14rc01 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
-will hold years up to 65535.  The other two hold the date in text
+Libpng only has two year fields.  One is a 2-byte unsigned integer that
+will hold years up to 65535.  The other holds the date in text
 format, and will hold years up to 9999.
 
 The integer is
     "png_uint_16 year" in png_time_struct.
 
-The strings are
-    "png_charp time_buffer" in png_struct and
-    "near_time_buffer", which is a local character string in png.c.
+The string is
+    "char time_buffer[29]" in png_struct.  This will no
+longer be used in libpng-1.6.x and will be removed from libpng-1.7.0.
 
 There are seven time-related functions:
 

libpngpf.3

@@ -1,21 +1,11 @@
-.TH LIBPNGPF 3 "September 28, 2011"
+.TH LIBPNGPF 3 "January 17, 2013"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.5.6beta03
+libpng \- Portable Network Graphics (PNG) Reference Library 1.5.14rc01
 (private functions)
 .SH SYNOPSIS
 \fB#include \fI"pngpriv.h"
 
-\fI\fB
-
-\fBAs of libpng version \fP\fI1.5.1\fP\fB, this section is no longer \fP\fImaintained\fP\fB, now \fIthat
-
-\fBthe private function prototypes are hidden in pngpriv.h and not \fIaccessible
-
-\fBto applications. Look in pngpriv.h for the prototypes and a short \fIdescription
-
-\fBof each \fIfunction.
-
-\fI\fB
+\fBAs of libpng version \fP\fI1.5.1\fP\fB, this section is no longer \fP\fImaintained\fP\fB, now that the private function prototypes are hidden in pngpriv.h and not accessible to applications. Look in pngpriv.h for the prototypes and a short description of each \fIfunction.
 
 .SH DESCRIPTION
 The functions previously listed here are used privately by libpng

ltmain.sh

@@ -1,9 +1,9 @@
 
-# libtool (GNU libtool) 2.4
+# libtool (GNU libtool) 2.4.2
 # Written by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996
 
 # Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006,
-# 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+# 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
 # This is free software; see the source for copying conditions.  There is NO
 # warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 
@@ -41,6 +41,7 @@
 #       --quiet, --silent    don't print informational messages
 #       --no-quiet, --no-silent
 #                            print informational messages (default)
+#       --no-warn            don't display warning messages
 #       --tag=TAG            use configuration variables from tag TAG
 #   -v, --verbose            print more informational messages than default
 #       --no-verbose         don't print the extra informational messages
@@ -69,7 +70,7 @@
 #         compiler:		$LTCC
 #         compiler flags:		$LTCFLAGS
 #         linker:		$LD (gnu? $with_gnu_ld)
-#         $progname:	(GNU libtool) 2.4
+#         $progname:	(GNU libtool) 2.4.2
 #         automake:	$automake_version
 #         autoconf:	$autoconf_version
 #
@@ -79,9 +80,9 @@
 
 PROGRAM=libtool
 PACKAGE=libtool
-VERSION=2.4
+VERSION=2.4.2
 TIMESTAMP=""
-package_revision=1.3293
+package_revision=1.3337
 
 # Be Bourne compatible
 if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
@@ -136,15 +137,10 @@ progpath="$0"
 
 : ${CP="cp -f"}
 test "${ECHO+set}" = set || ECHO=${as_echo-'printf %s\n'}
-: ${EGREP="grep -E"}
-: ${FGREP="grep -F"}
-: ${GREP="grep"}
-: ${LN_S="ln -s"}
 : ${MAKE="make"}
 : ${MKDIR="mkdir"}
 : ${MV="mv -f"}
 : ${RM="rm -f"}
-: ${SED="sed"}
 : ${SHELL="${CONFIG_SHELL-/bin/sh}"}
 : ${Xsed="$SED -e 1s/^X//"}
 
@@ -387,7 +383,7 @@ case $progpath in
      ;;
   *)
      save_IFS="$IFS"
-     IFS=:
+     IFS=${PATH_SEPARATOR-:}
      for progdir in $PATH; do
        IFS="$save_IFS"
        test -x "$progdir/$progname" && break
@@ -771,8 +767,8 @@ func_help ()
 	s*\$LTCFLAGS*'"$LTCFLAGS"'*
 	s*\$LD*'"$LD"'*
 	s/\$with_gnu_ld/'"$with_gnu_ld"'/
-	s/\$automake_version/'"`(automake --version) 2>/dev/null |$SED 1q`"'/
-	s/\$autoconf_version/'"`(autoconf --version) 2>/dev/null |$SED 1q`"'/
+	s/\$automake_version/'"`(${AUTOMAKE-automake} --version) 2>/dev/null |$SED 1q`"'/
+	s/\$autoconf_version/'"`(${AUTOCONF-autoconf} --version) 2>/dev/null |$SED 1q`"'/
 	p
 	d
      }
@@ -1052,6 +1048,7 @@ opt_finish=false
 opt_help=false
 opt_help_all=false
 opt_silent=:
+opt_warning=:
 opt_verbose=:
 opt_silent=false
 opt_verbose=false
@@ -1118,6 +1115,10 @@ esac
 			;;
       --no-silent|--no-quiet)
 			opt_silent=false
+func_append preserve_args " $opt"
+			;;
+      --no-warning|--no-warn)
+			opt_warning=false
 func_append preserve_args " $opt"
 			;;
       --no-verbose)
@@ -2059,7 +2060,7 @@ func_mode_compile ()
     *.[cCFSifmso] | \
     *.ada | *.adb | *.ads | *.asm | \
     *.c++ | *.cc | *.ii | *.class | *.cpp | *.cxx | \
-    *.[fF][09]? | *.for | *.java | *.obj | *.sx | *.cu | *.cup)
+    *.[fF][09]? | *.for | *.java | *.go | *.obj | *.sx | *.cu | *.cup)
       func_xform "$libobj"
       libobj=$func_xform_result
       ;;
@@ -3201,11 +3202,13 @@ func_mode_install ()
 
       # Set up the ranlib parameters.
       oldlib="$destdir/$name"
+      func_to_tool_file "$oldlib" func_convert_file_msys_to_w32
+      tool_oldlib=$func_to_tool_file_result
 
       func_show_eval "$install_prog \$file \$oldlib" 'exit $?'
 
       if test -n "$stripme" && test -n "$old_striplib"; then
-	func_show_eval "$old_striplib $oldlib" 'exit $?'
+	func_show_eval "$old_striplib $tool_oldlib" 'exit $?'
       fi
 
       # Do each command in the postinstall commands.
@@ -3470,7 +3473,7 @@ static const void *lt_preloaded_setup() {
 	  # linked before any other PIC object.  But we must not use
 	  # pic_flag when linking with -static.  The problem exists in
 	  # FreeBSD 2.2.6 and is fixed in FreeBSD 3.1.
-	  *-*-freebsd2*|*-*-freebsd3.0*|*-*-freebsdelf3.0*)
+	  *-*-freebsd2.*|*-*-freebsd3.0*|*-*-freebsdelf3.0*)
 	    pic_flag_for_symtable=" $pic_flag -DFREEBSD_WORKAROUND" ;;
 	  *-*-hpux*)
 	    pic_flag_for_symtable=" $pic_flag"  ;;
@@ -3982,14 +3985,17 @@ func_exec_program_core ()
 # launches target application with the remaining arguments.
 func_exec_program ()
 {
-  for lt_wr_arg
-  do
-    case \$lt_wr_arg in
-    --lt-*) ;;
-    *) set x \"\$@\" \"\$lt_wr_arg\"; shift;;
-    esac
-    shift
-  done
+  case \" \$* \" in
+  *\\ --lt-*)
+    for lt_wr_arg
+    do
+      case \$lt_wr_arg in
+      --lt-*) ;;
+      *) set x \"\$@\" \"\$lt_wr_arg\"; shift;;
+      esac
+      shift
+    done ;;
+  esac
   func_exec_program_core \${1+\"\$@\"}
 }
 
@@ -5057,9 +5063,15 @@ void lt_dump_script (FILE* f)
 {
 EOF
 	    func_emit_wrapper yes |
-              $SED -e 's/\([\\"]\)/\\\1/g' \
-	           -e 's/^/  fputs ("/' -e 's/$/\\n", f);/'
-
+	      $SED -n -e '
+s/^\(.\{79\}\)\(..*\)/\1\
+\2/
+h
+s/\([\\"]\)/\\\1/g
+s/$/\\n/
+s/\([^\n]*\).*/  fputs ("\1", f);/p
+g
+D'
             cat <<"EOF"
 }
 EOF
@@ -5643,7 +5655,8 @@ func_mode_link ()
 	continue
 	;;
 
-      -mt|-mthreads|-kthread|-Kthread|-pthread|-pthreads|--thread-safe|-threads)
+      -mt|-mthreads|-kthread|-Kthread|-pthread|-pthreads|--thread-safe \
+      |-threads|-fopenmp|-openmp|-mp|-xopenmp|-omp|-qsmp=*)
 	func_append compiler_flags " $arg"
 	func_append compile_command " $arg"
 	func_append finalize_command " $arg"
@@ -6147,7 +6160,8 @@ func_mode_link ()
 	lib=
 	found=no
 	case $deplib in
-	-mt|-mthreads|-kthread|-Kthread|-pthread|-pthreads|--thread-safe|-threads)
+	-mt|-mthreads|-kthread|-Kthread|-pthread|-pthreads|--thread-safe \
+        |-threads|-fopenmp|-openmp|-mp|-xopenmp|-omp|-qsmp=*)
 	  if test "$linkmode,$pass" = "prog,link"; then
 	    compile_deplibs="$deplib $compile_deplibs"
 	    finalize_deplibs="$deplib $finalize_deplibs"
@@ -6831,7 +6845,7 @@ func_mode_link ()
 	         test "$hardcode_direct_absolute" = no; then
 		add="$dir/$linklib"
 	      elif test "$hardcode_minus_L" = yes; then
-		add_dir="-L$dir"
+		add_dir="-L$absdir"
 		# Try looking first in the location we're being installed to.
 		if test -n "$inst_prefix_dir"; then
 		  case $libdir in
@@ -7316,6 +7330,7 @@ func_mode_link ()
 	  # which has an extra 1 added just for fun
 	  #
 	  case $version_type in
+	  # correct linux to gnu/linux during the next big refactor
 	  darwin|linux|osf|windows|none)
 	    func_arith $number_major + $number_minor
 	    current=$func_arith_result
@@ -7432,7 +7447,7 @@ func_mode_link ()
 	  versuffix="$major.$revision"
 	  ;;
 
-	linux)
+	linux) # correct to gnu/linux during the next big refactor
 	  func_arith $current - $age
 	  major=.$func_arith_result
 	  versuffix="$major.$age.$revision"
@@ -8020,6 +8035,11 @@ EOF
 
       # Test again, we may have decided not to build it any more
       if test "$build_libtool_libs" = yes; then
+	# Remove ${wl} instances when linking with ld.
+	# FIXME: should test the right _cmds variable.
+	case $archive_cmds in
+	  *\$LD\ *) wl= ;;
+        esac
 	if test "$hardcode_into_libs" = yes; then
 	  # Hardcode the library paths
 	  hardcode_libdirs=
@@ -8050,7 +8070,7 @@ EOF
 	    elif test -n "$runpath_var"; then
 	      case "$perm_rpath " in
 	      *" $libdir "*) ;;
-	      *) func_apped perm_rpath " $libdir" ;;
+	      *) func_append perm_rpath " $libdir" ;;
 	      esac
 	    fi
 	  done
@@ -8058,11 +8078,7 @@ EOF
 	  if test -n "$hardcode_libdir_separator" &&
 	     test -n "$hardcode_libdirs"; then
 	    libdir="$hardcode_libdirs"
-	    if test -n "$hardcode_libdir_flag_spec_ld"; then
-	      eval dep_rpath=\"$hardcode_libdir_flag_spec_ld\"
-	    else
-	      eval dep_rpath=\"$hardcode_libdir_flag_spec\"
-	    fi
+	    eval "dep_rpath=\"$hardcode_libdir_flag_spec\""
 	  fi
 	  if test -n "$runpath_var" && test -n "$perm_rpath"; then
 	    # We should set the runpath_var.
@@ -9152,6 +9168,8 @@ EOF
 	    esac
 	  done
 	fi
+	func_to_tool_file "$oldlib" func_convert_file_msys_to_w32
+	tool_oldlib=$func_to_tool_file_result
 	eval cmds=\"$old_archive_cmds\"
 
 	func_len " $cmds"
@@ -9261,7 +9279,8 @@ EOF
 	      *.la)
 		func_basename "$deplib"
 		name="$func_basename_result"
-		eval libdir=`${SED} -n -e 's/^libdir=\(.*\)$/\1/p' $deplib`
+		func_resolve_sysroot "$deplib"
+		eval libdir=`${SED} -n -e 's/^libdir=\(.*\)$/\1/p' $func_resolve_sysroot_result`
 		test -z "$libdir" && \
 		  func_fatal_error "\`$deplib' is not a valid libtool archive"
 		func_append newdependency_libs " ${lt_sysroot:+=}$libdir/$name"

missing

@@ -1,10 +1,9 @@
 #! /bin/sh
 # Common stub for a few missing GNU programs while installing.
 
-scriptversion=2009-04-28.21; # UTC
+scriptversion=2012-01-06.18; # UTC
 
-# Copyright (C) 1996, 1997, 1999, 2000, 2002, 2003, 2004, 2005, 2006,
-# 2008, 2009 Free Software Foundation, Inc.
+# Copyright (C) 1996-2012 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
@@ -26,7 +25,7 @@ scriptversion=2009-04-28.21; # UTC
 # the same distribution terms that you use for the rest of that program.
 
 if test $# -eq 0; then
-  echo 1>&2 "Try \`$0 --help' for more information"
+  echo 1>&2 "Try '$0 --help' for more information"
   exit 1
 fi
 
@@ -34,7 +33,7 @@ run=:
 sed_output='s/.* --output[ =]\([^ ]*\).*/\1/p'
 sed_minuso='s/.* -o \([^ ]*\).*/\1/p'
 
-# In the cases where this matters, `missing' is being run in the
+# In the cases where this matters, 'missing' is being run in the
 # srcdir already.
 if test -f configure.ac; then
   configure_ac=configure.ac
@@ -65,7 +64,7 @@ case $1 in
     echo "\
 $0 [OPTION]... PROGRAM [ARGUMENT]...
 
-Handle \`PROGRAM [ARGUMENT]...' for when PROGRAM is missing, or return an
+Handle 'PROGRAM [ARGUMENT]...' for when PROGRAM is missing, or return an
 error status if there is no known handling for PROGRAM.
 
 Options:
@@ -74,21 +73,20 @@ Options:
   --run           try to run the given command, and emulate it if it fails
 
 Supported PROGRAM values:
-  aclocal      touch file \`aclocal.m4'
-  autoconf     touch file \`configure'
-  autoheader   touch file \`config.h.in'
+  aclocal      touch file 'aclocal.m4'
+  autoconf     touch file 'configure'
+  autoheader   touch file 'config.h.in'
   autom4te     touch the output file, or create a stub one
-  automake     touch all \`Makefile.in' files
-  bison        create \`y.tab.[ch]', if possible, from existing .[ch]
-  flex         create \`lex.yy.c', if possible, from existing .c
+  automake     touch all 'Makefile.in' files
+  bison        create 'y.tab.[ch]', if possible, from existing .[ch]
+  flex         create 'lex.yy.c', if possible, from existing .c
   help2man     touch the output file
-  lex          create \`lex.yy.c', if possible, from existing .c
+  lex          create 'lex.yy.c', if possible, from existing .c
   makeinfo     touch the output file
-  tar          try tar, gnutar, gtar, then tar without non-portable flags
-  yacc         create \`y.tab.[ch]', if possible, from existing .[ch]
+  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.
+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 $?
@@ -100,8 +98,8 @@ Send bug reports to <bug-automake@gnu.org>."
     ;;
 
   -*)
-    echo 1>&2 "$0: Unknown \`$1' option"
-    echo 1>&2 "Try \`$0 --help' for more information"
+    echo 1>&2 "$0: Unknown '$1' option"
+    echo 1>&2 "Try '$0 --help' for more information"
     exit 1
     ;;
 
@@ -122,22 +120,13 @@ case $1 in
     # Not GNU programs, they don't have --version.
     ;;
 
-  tar*)
-    if test -n "$run"; then
-       echo 1>&2 "ERROR: \`tar' requires --run"
-       exit 1
-    elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
-       exit 1
-    fi
-    ;;
-
   *)
     if test -z "$run" && ($1 --version) > /dev/null 2>&1; then
        # We have it, but it failed.
        exit 1
     elif test "x$2" = "x--version" || test "x$2" = "x--help"; then
        # Could not run --version or --help.  This is probably someone
-       # running `$TOOL --version' or `$TOOL --help' to check whether
+       # running '$TOOL --version' or '$TOOL --help' to check whether
        # $TOOL exists and not knowing $TOOL uses missing.
        exit 1
     fi
@@ -149,27 +138,27 @@ esac
 case $program in
   aclocal*)
     echo 1>&2 "\
-WARNING: \`$1' is $msg.  You should only need it if
-         you modified \`acinclude.m4' or \`${configure_ac}'.  You might want
-         to install the \`Automake' and \`Perl' packages.  Grab them from
+WARNING: '$1' is $msg.  You should only need it if
+         you modified 'acinclude.m4' or '${configure_ac}'.  You might want
+         to install the Automake and Perl packages.  Grab them from
          any GNU archive site."
     touch aclocal.m4
     ;;
 
   autoconf*)
     echo 1>&2 "\
-WARNING: \`$1' is $msg.  You should only need it if
-         you modified \`${configure_ac}'.  You might want to install the
-         \`Autoconf' and \`GNU m4' packages.  Grab them from any GNU
+WARNING: '$1' is $msg.  You should only need it if
+         you modified '${configure_ac}'.  You might want to install the
+         Autoconf and GNU m4 packages.  Grab them from any GNU
          archive site."
     touch configure
     ;;
 
   autoheader*)
     echo 1>&2 "\
-WARNING: \`$1' is $msg.  You should only need it if
-         you modified \`acconfig.h' or \`${configure_ac}'.  You might want
-         to install the \`Autoconf' and \`GNU m4' packages.  Grab them
+WARNING: '$1' is $msg.  You should only need it if
+         you modified 'acconfig.h' or '${configure_ac}'.  You might want
+         to install the Autoconf and GNU m4 packages.  Grab them
          from any GNU archive site."
     files=`sed -n 's/^[ ]*A[CM]_CONFIG_HEADER(\([^)]*\)).*/\1/p' ${configure_ac}`
     test -z "$files" && files="config.h"
@@ -186,9 +175,9 @@ WARNING: \`$1' is $msg.  You should only need it if
 
   automake*)
     echo 1>&2 "\
-WARNING: \`$1' is $msg.  You should only need it if
-         you modified \`Makefile.am', \`acinclude.m4' or \`${configure_ac}'.
-         You might want to install the \`Automake' and \`Perl' packages.
+WARNING: '$1' is $msg.  You should only need it if
+         you modified 'Makefile.am', 'acinclude.m4' or '${configure_ac}'.
+         You might want to install the Automake and Perl packages.
          Grab them from any GNU archive site."
     find . -type f -name Makefile.am -print |
 	   sed 's/\.am$/.in/' |
@@ -197,10 +186,10 @@ WARNING: \`$1' is $msg.  You should only need it if
 
   autom4te*)
     echo 1>&2 "\
-WARNING: \`$1' is needed, but is $msg.
+WARNING: '$1' is needed, but is $msg.
          You might have modified some files without having the
          proper tools for further handling them.
-         You can get \`$1' as part of \`Autoconf' from any GNU
+         You can get '$1' as part of Autoconf from any GNU
          archive site."
 
     file=`echo "$*" | sed -n "$sed_output"`
@@ -220,13 +209,13 @@ WARNING: \`$1' is needed, but is $msg.
 
   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
+WARNING: '$1' $msg.  You should only need it if
+         you modified a '.y' file.  You may need the Bison package
          in order for those modifications to take effect.  You can get
-         \`Bison' from any GNU archive site."
+         Bison from any GNU archive site."
     rm -f y.tab.c y.tab.h
     if test $# -ne 1; then
-        eval LASTARG="\${$#}"
+        eval LASTARG=\${$#}
 	case $LASTARG in
 	*.y)
 	    SRCFILE=`echo "$LASTARG" | sed 's/y$/c/'`
@@ -250,13 +239,13 @@ WARNING: \`$1' $msg.  You should only need it if
 
   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
+WARNING: '$1' is $msg.  You should only need it if
+         you modified a '.l' file.  You may need the Flex package
          in order for those modifications to take effect.  You can get
-         \`Flex' from any GNU archive site."
+         Flex from any GNU archive site."
     rm -f lex.yy.c
     if test $# -ne 1; then
-        eval LASTARG="\${$#}"
+        eval LASTARG=\${$#}
 	case $LASTARG in
 	*.l)
 	    SRCFILE=`echo "$LASTARG" | sed 's/l$/c/'`
@@ -273,10 +262,10 @@ WARNING: \`$1' is $msg.  You should only need it if
 
   help2man*)
     echo 1>&2 "\
-WARNING: \`$1' is $msg.  You should only need it if
+WARNING: '$1' is $msg.  You should only need it if
 	 you modified a dependency of a manual page.  You may need the
-	 \`Help2man' package in order for those modifications to take
-	 effect.  You can get \`Help2man' from any GNU archive site."
+	 Help2man package in order for those modifications to take
+	 effect.  You can get Help2man from any GNU archive site."
 
     file=`echo "$*" | sed -n "$sed_output"`
     test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
@@ -291,12 +280,12 @@ WARNING: \`$1' is $msg.  You should only need it if
 
   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
+WARNING: '$1' is $msg.  You should only need it if
+         you modified a '.texi' or '.texinfo' file, or any other file
          indirectly affecting the aspect of the manual.  The spurious
-         call might also be the consequence of using a buggy \`make' (AIX,
-         DU, IRIX).  You might want to install the \`Texinfo' package or
-         the \`GNU make' package.  Grab either from any GNU archive site."
+         call might also be the consequence of using a buggy 'make' (AIX,
+         DU, IRIX).  You might want to install the Texinfo package or
+         the GNU make package.  Grab either from any GNU archive site."
     # The file to touch is that specified with -o ...
     file=`echo "$*" | sed -n "$sed_output"`
     test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
@@ -318,49 +307,14 @@ WARNING: \`$1' is $msg.  You should only need it if
     touch $file
     ;;
 
-  tar*)
-    shift
-
-    # We have already tried tar in the generic part.
-    # Look for gnutar/gtar before invocation to avoid ugly error
-    # messages.
-    if (gnutar --version > /dev/null 2>&1); then
-       gnutar "$@" && exit 0
-    fi
-    if (gtar --version > /dev/null 2>&1); then
-       gtar "$@" && exit 0
-    fi
-    firstarg="$1"
-    if shift; then
-	case $firstarg in
-	*o*)
-	    firstarg=`echo "$firstarg" | sed s/o//`
-	    tar "$firstarg" "$@" && exit 0
-	    ;;
-	esac
-	case $firstarg in
-	*h*)
-	    firstarg=`echo "$firstarg" | sed s/h//`
-	    tar "$firstarg" "$@" && exit 0
-	    ;;
-	esac
-    fi
-
-    echo 1>&2 "\
-WARNING: I can't seem to be able to run \`tar' with the given arguments.
-         You may want to install GNU tar or Free paxutils, or check the
-         command line arguments."
-    exit 1
-    ;;
-
   *)
     echo 1>&2 "\
-WARNING: \`$1' is needed, and is $msg.
+WARNING: '$1' is needed, and is $msg.
          You might have modified some files without having the
-         proper tools for further handling them.  Check the \`README' file,
+         proper tools for further handling them.  Check the 'README' file,
          it often tells you about the needed prerequisites for installing
          this package.  You may also peek at any GNU archive site, in case
-         some other package would contain this missing \`$1' program."
+         some other package would contain this missing '$1' program."
     exit 1
     ;;
 esac

png.5

@@ -1,4 +1,4 @@
-.TH PNG 5 "September 28, 2011"
+.TH PNG 5 "January 17, 2013"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION

png.c

@@ -1,8 +1,8 @@
 
 /* png.c - location for general purpose libpng functions
  *
- * Last changed in libpng 1.5.6 [(PENDING RELEASE)]
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.14 [(PENDING RELEASE)]
+ * Copyright (c) 1998-2013 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.)
  *
@@ -14,7 +14,7 @@
 #include "pngpriv.h"
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef png_libpng_version_1_5_6beta03 Your_png_h_is_not_version_1_5_6beta03;
+typedef png_libpng_version_1_5_14rc01 Your_png_h_is_not_version_1_5_14rc01;
 
 /* 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
@@ -73,13 +73,16 @@ PNG_FUNCTION(voidpf /* PRIVATE */,
 png_zalloc,(voidpf png_ptr, uInt items, uInt size),PNG_ALLOCATED)
 {
    png_voidp ptr;
-   png_structp p=(png_structp)png_ptr;
-   png_uint_32 save_flags=p->flags;
+   png_structp p;
+   png_uint_32 save_flags;
    png_alloc_size_t num_bytes;
 
    if (png_ptr == NULL)
       return (NULL);
 
+   p=(png_structp)png_ptr;
+   save_flags=p->flags;
+
    if (items > PNG_UINT_32_MAX/size)
    {
      png_warning (p, "Potential overflow in png_zalloc()");
@@ -599,9 +602,19 @@ png_convert_to_rfc1123(png_structp png_ptr, png_const_timep ptime)
    if (png_ptr == NULL)
       return (NULL);
 
+   if (ptime->year > 9999 /* RFC1123 limitation */ ||
+       ptime->month == 0    ||  ptime->month > 12  ||
+       ptime->day   == 0    ||  ptime->day   > 31  ||
+       ptime->hour  > 23    ||  ptime->minute > 59 ||
+       ptime->second > 60)
+   {
+      png_warning(png_ptr, "Ignoring invalid time value");
+      return (NULL);
+   }
+
    {
       size_t pos = 0;
-      char number_buf[5]; /* enough for a four digit year */
+      char number_buf[5]; /* enough for a four-digit year */
 
 #     define APPEND_STRING(string)\
          pos = png_safecat(png_ptr->time_buffer, sizeof png_ptr->time_buffer,\
@@ -612,17 +625,17 @@ png_convert_to_rfc1123(png_structp png_ptr, png_const_timep ptime)
          if (pos < (sizeof png_ptr->time_buffer)-1)\
             png_ptr->time_buffer[pos++] = (ch)
 
-      APPEND_NUMBER(PNG_NUMBER_FORMAT_u, (unsigned)ptime->day % 32);
+      APPEND_NUMBER(PNG_NUMBER_FORMAT_u, (unsigned)ptime->day);
       APPEND(' ');
-      APPEND_STRING(short_months[(ptime->month - 1) % 12]);
+      APPEND_STRING(short_months[(ptime->month - 1)]);
       APPEND(' ');
       APPEND_NUMBER(PNG_NUMBER_FORMAT_u, ptime->year);
       APPEND(' ');
-      APPEND_NUMBER(PNG_NUMBER_FORMAT_02u, (unsigned)ptime->hour % 24);
+      APPEND_NUMBER(PNG_NUMBER_FORMAT_02u, (unsigned)ptime->hour);
       APPEND(':');
-      APPEND_NUMBER(PNG_NUMBER_FORMAT_02u, (unsigned)ptime->minute % 60);
+      APPEND_NUMBER(PNG_NUMBER_FORMAT_02u, (unsigned)ptime->minute);
       APPEND(':');
-      APPEND_NUMBER(PNG_NUMBER_FORMAT_02u, (unsigned)ptime->second % 61);
+      APPEND_NUMBER(PNG_NUMBER_FORMAT_02u, (unsigned)ptime->second);
       APPEND_STRING(" +0000"); /* This reliably terminates the buffer */
 
 #     undef APPEND
@@ -645,14 +658,14 @@ png_get_copyright(png_const_structp png_ptr)
 #else
 #  ifdef __STDC__
    return PNG_STRING_NEWLINE \
-     "libpng version 1.5.6beta03 - September 28, 2011" PNG_STRING_NEWLINE \
-     "Copyright (c) 1998-2011 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
+     "libpng version 1.5.14rc01 - January 17, 2013" PNG_STRING_NEWLINE \
+     "Copyright (c) 1998-2013 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 "libpng version 1.5.6beta03 - September 28, 2011\
-      Copyright (c) 1998-2011 Glenn Randers-Pehrson\
+      return "libpng version 1.5.14rc01 - January 17, 2013\
+      Copyright (c) 1998-2013 Glenn Randers-Pehrson\
       Copyright (c) 1996-1997 Andreas Dilger\
       Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.";
 #  endif
@@ -959,8 +972,8 @@ int png_XYZ_from_xy(png_XYZ *XYZ, png_xy xy)
     * and it is certain that it becomes unstable where the end points are close
     * together.
     *
-    * So this code uses the perhaps slighly less optimal but more understandable
-    * and totally obvious approach of calculating color-scale.
+    * So this code uses the perhaps slightly less optimal but more
+    * understandable and totally obvious approach of calculating color-scale.
     *
     * This algorithm depends on the precision in white-scale and that is
     * (1/white-y), so we can immediately see that as white-y approaches 0 the
@@ -1448,7 +1461,7 @@ png_check_fp_string(png_const_charp string, png_size_t size)
 }
 #endif /* pCAL or sCAL */
 
-#ifdef PNG_READ_sCAL_SUPPORTED
+#ifdef PNG_sCAL_SUPPORTED
 #  ifdef PNG_FLOATING_POINT_SUPPORTED
 /* Utility used below - a simple accurate power of ten from an integral
  * exponent.
@@ -1457,7 +1470,7 @@ static double
 png_pow10(int power)
 {
    int recip = 0;
-   double d = 1;
+   double d = 1.0;
 
    /* Handle negative exponent with a reciprocal at the end because
     * 10 is exact whereas .1 is inexact in base 2
@@ -1471,7 +1484,7 @@ png_pow10(int power)
    if (power > 0)
    {
       /* Decompose power bitwise. */
-      double mult = 10;
+      double mult = 10.0;
       do
       {
          if (power & 1) d *= mult;
@@ -1590,7 +1603,8 @@ png_ascii_from_fp(png_structp png_ptr, png_charp ascii, png_size_t size,
             {
                double d;
 
-               fp *= 10;
+               fp *= 10.0;
+
                /* Use modf here, not floor and subtract, so that
                 * the separation is done in one step.  At the end
                 * of the loop don't break the number into parts so
@@ -1603,7 +1617,7 @@ png_ascii_from_fp(png_structp png_ptr, png_charp ascii, png_size_t size,
                {
                   d = floor(fp + .5);
 
-                  if (d > 9)
+                  if (d > 9.0)
                   {
                      /* Rounding up to 10, handle that here. */
                      if (czero > 0)
@@ -1611,9 +1625,10 @@ png_ascii_from_fp(png_structp png_ptr, png_charp ascii, png_size_t size,
                         --czero, d = 1;
                         if (cdigits == 0) --clead;
                      }
+
                      else
                      {
-                        while (cdigits > 0 && d > 9)
+                        while (cdigits > 0 && d > 9.0)
                         {
                            int ch = *--ascii;
 
@@ -1638,7 +1653,7 @@ png_ascii_from_fp(png_structp png_ptr, png_charp ascii, png_size_t size,
                          * exponent but take into account the leading
                          * decimal point.
                          */
-                        if (d > 9)  /* cdigits == 0 */
+                        if (d > 9.0)  /* cdigits == 0 */
                         {
                            if (exp_b10 == (-1))
                            {
@@ -1659,18 +1674,19 @@ png_ascii_from_fp(png_structp png_ptr, png_charp ascii, png_size_t size,
                               ++exp_b10;
 
                            /* In all cases we output a '1' */
-                           d = 1;
+                           d = 1.0;
                         }
                      }
                   }
                   fp = 0; /* Guarantees termination below. */
                }
 
-               if (d == 0)
+               if (d == 0.0)
                {
                   ++czero;
                   if (cdigits == 0) ++clead;
                }
+
                else
                {
                   /* Included embedded zeros in the digit count. */
@@ -1698,6 +1714,7 @@ png_ascii_from_fp(png_structp png_ptr, png_charp ascii, png_size_t size,
                                                                  above */
                      --exp_b10;
                   }
+
                   *ascii++ = (char)(48 + (int)d), ++cdigits;
                }
             }
@@ -2030,7 +2047,8 @@ png_muldiv_warn(png_structp png_ptr, png_fixed_point a, png_int_32 times,
 }
 #endif
 
-#ifdef PNG_READ_GAMMA_SUPPORTED /* more fixed point functions for gammma */
+#if (defined PNG_READ_GAMMA_SUPPORTED) || (defined PNG_cHRM_SUPPORTED)
+/* more fixed point functions for gamma and cHRM (xy/XYZ) suport. */
 /* Calculate a reciprocal, return 0 on div-by-zero or overflow. */
 png_fixed_point
 png_reciprocal(png_fixed_point a)
@@ -2050,6 +2068,7 @@ png_reciprocal(png_fixed_point a)
    return 0; /* error/overflow */
 }
 
+#ifdef PNG_READ_GAMMA_SUPPORTED
 /* A local convenience routine. */
 static png_fixed_point
 png_product2(png_fixed_point a, png_fixed_point b)
@@ -2071,6 +2090,7 @@ png_product2(png_fixed_point a, png_fixed_point b)
 
    return 0; /* overflow */
 }
+#endif /* READ_GAMMA */
 
 /* The inverse of the above. */
 png_fixed_point
@@ -2098,7 +2118,7 @@ png_reciprocal2(png_fixed_point a, png_fixed_point b)
 
    return 0; /* overflow */
 }
-#endif /* READ_GAMMA */
+#endif /* READ_GAMMA || cHRM */
 
 #ifdef PNG_CHECK_cHRM_SUPPORTED
 /* Added at libpng version 1.2.34 (Dec 8, 2008) and 1.4.0 (Jan 2,
@@ -2164,9 +2184,9 @@ png_64bit_product (long v1, long v2, unsigned long *hi_product,
 static png_uint_32
 png_8bit_l2[128] =
 {
-#  if PNG_DO_BC
+#  ifdef PNG_DO_BC
       for (i=128;i<256;++i) { .5 - l(i/255)/l(2)*65536*65536; }
-#  endif
+#  else
    4270715492U, 4222494797U, 4174646467U, 4127164793U, 4080044201U, 4033279239U,
    3986864580U, 3940795015U, 3895065449U, 3849670902U, 3804606499U, 3759867474U,
    3715449162U, 3671346997U, 3627556511U, 3584073329U, 3540893168U, 3498011834U,
@@ -2189,6 +2209,8 @@ png_8bit_l2[128] =
    324227938U, 298676034U, 273229066U, 247886176U, 222646516U, 197509248U,
    172473545U, 147538590U, 122703574U, 97967701U, 73330182U, 48790236U,
    24347096U, 0U
+#  endif
+
 #if 0
    /* The following are the values for 16-bit tables - these work fine for the
     * 8-bit conversions but produce very slightly larger errors in the 16-bit
@@ -2323,7 +2345,7 @@ png_log16bit(png_uint_32 x)
  * integer bits (the top 4) simply determine a shift.
  *
  * The worst case is the 16-bit distinction between 65535 and 65534, this
- * requires perhaps spurious accuracty in the decoding of the logarithm to
+ * requires perhaps spurious accuracy in the decoding of the logarithm to
  * distinguish log2(65535/65534.5) - 10^-5 or 17 bits.  There is little chance
  * of getting this accuracy in practice.
  *
@@ -2334,17 +2356,18 @@ png_log16bit(png_uint_32 x)
 static png_uint_32
 png_32bit_exp[16] =
 {
-#  if PNG_DO_BC
+#  ifdef PNG_DO_BC
       for (i=0;i<16;++i) { .5 + e(-i/16*l(2))*2^32; }
-#  endif
+#  else
    /* NOTE: the first entry is deliberately set to the maximum 32-bit value. */
    4294967295U, 4112874773U, 3938502376U, 3771522796U, 3611622603U, 3458501653U,
    3311872529U, 3171459999U, 3037000500U, 2908241642U, 2784941738U, 2666869345U,
    2553802834U, 2445529972U, 2341847524U, 2242560872U
+#  endif
 };
 
 /* Adjustment table; provided to explain the numbers in the code below. */
-#if PNG_DO_BC
+#ifdef PNG_DO_BC
 for (i=11;i>=0;--i){ print i, " ", (1 - e(-(2^i)/65536*l(2))) * 2^(32-i), "\n"}
    11 44937.64284865548751208448
    10 45180.98734845585101160448
@@ -2507,7 +2530,7 @@ png_gamma_significant(png_fixed_point gamma_val)
 }
 
 /* Internal function to build a single 16-bit table - the table consists of
- * 'num' 256 entry subtables, where 'num' is determined by 'shift' - the amount
+ * 'num' 256-entry subtables, where 'num' is determined by 'shift' - the amount
  * to shift the input values right (or 16-number_of_signifiant_bits).
  *
  * The caller is responsible for ensuring that the table gets cleaned up on
@@ -2594,9 +2617,9 @@ png_build_16to8_table(png_structp png_ptr, png_uint_16pp *ptable,
    png_uint_16pp table = *ptable =
        (png_uint_16pp)png_calloc(png_ptr, num * png_sizeof(png_uint_16p));
 
-   /* 'num' is the number of tables and also the number of low bits of low
-    * bits of the input 16-bit value used to select a table.  Each table is
-    * itself index by the high 8 bits of the value.
+   /* 'num' is the number of tables and also the number of low bits of the
+    * input 16-bit value used to select a table.  Each table is itself indexed
+    * by the high 8 bits of the value.
     */
    for (i = 0; i < num; i++)
       table[i] = (png_uint_16p)png_malloc(png_ptr,
@@ -2647,7 +2670,7 @@ png_build_16to8_table(png_structp png_ptr, png_uint_16pp *ptable,
 
 /* Build a single 8-bit table: same as the 16-bit case but much simpler (and
  * typically much faster).  Note that libpng currently does no sBIT processing
- * (apparently contrary to the spec) so a 256 entry table is always generated.
+ * (apparently contrary to the spec) so a 256-entry table is always generated.
  */
 static void
 png_build_8bit_table(png_structp png_ptr, png_bytepp ptable,
@@ -2663,6 +2686,60 @@ png_build_8bit_table(png_structp png_ptr, png_bytepp ptable,
       table[i] = (png_byte)i;
 }
 
+/* Used from png_read_destroy and below to release the memory used by the gamma
+ * tables.
+ */
+void /* PRIVATE */
+png_destroy_gamma_table(png_structp png_ptr)
+{
+   png_free(png_ptr, png_ptr->gamma_table);
+   png_ptr->gamma_table = NULL;
+
+   if (png_ptr->gamma_16_table != NULL)
+   {
+      int i;
+      int istop = (1 << (8 - png_ptr->gamma_shift));
+      for (i = 0; i < istop; i++)
+      {
+         png_free(png_ptr, png_ptr->gamma_16_table[i]);
+      }
+   png_free(png_ptr, png_ptr->gamma_16_table);
+   png_ptr->gamma_16_table = NULL;
+   }
+
+#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \
+   defined(PNG_READ_ALPHA_MODE_SUPPORTED) || \
+   defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
+   png_free(png_ptr, png_ptr->gamma_from_1);
+   png_ptr->gamma_from_1 = NULL;
+   png_free(png_ptr, png_ptr->gamma_to_1);
+   png_ptr->gamma_to_1 = NULL;
+
+   if (png_ptr->gamma_16_from_1 != NULL)
+   {
+      int i;
+      int istop = (1 << (8 - png_ptr->gamma_shift));
+      for (i = 0; i < istop; i++)
+      {
+         png_free(png_ptr, png_ptr->gamma_16_from_1[i]);
+      }
+   png_free(png_ptr, png_ptr->gamma_16_from_1);
+   png_ptr->gamma_16_from_1 = NULL;
+   }
+   if (png_ptr->gamma_16_to_1 != NULL)
+   {
+      int i;
+      int istop = (1 << (8 - png_ptr->gamma_shift));
+      for (i = 0; i < istop; i++)
+      {
+         png_free(png_ptr, png_ptr->gamma_16_to_1[i]);
+      }
+   png_free(png_ptr, png_ptr->gamma_16_to_1);
+   png_ptr->gamma_16_to_1 = NULL;
+   }
+#endif /* READ_BACKGROUND || READ_ALPHA_MODE || RGB_TO_GRAY */
+}
+
 /* We build the 8- or 16-bit gamma tables here.  Note that for 16-bit
  * tables, we don't make a full table if we are reducing to 8-bit in
  * the future.  Note also how the gamma_16 tables are segmented so that
@@ -2673,6 +2750,18 @@ png_build_gamma_table(png_structp png_ptr, int bit_depth)
 {
   png_debug(1, "in png_build_gamma_table");
 
+  /* Remove any existing table; this copes with multiple calls to
+   * png_read_update_info.  The warning is because building the gamma tables
+   * multiple times is a performance hit - it's harmless but the ability to call
+   * png_read_update_info() multiple times is new in 1.5.6 so it seems sensible
+   * to warn if the app introduces such a hit.
+   */
+  if (png_ptr->gamma_table != NULL || png_ptr->gamma_16_table != NULL)
+  {
+    png_warning(png_ptr, "gamma table being rebuilt");
+    png_destroy_gamma_table(png_ptr);
+  }
+
   if (bit_depth <= 8)
   {
      png_build_8bit_table(png_ptr, &png_ptr->gamma_table,
@@ -2717,7 +2806,7 @@ png_build_gamma_table(png_structp png_ptr, int bit_depth)
       * Where 'iv' is the input color value and 'ov' is the output value -
       * pow(iv, gamma).
       *
-      * Thus the gamma table consists of up to 256 256 entry tables.  The table
+      * Thus the gamma table consists of up to 256 256-entry tables.  The table
       * is selected by the (8-gamma_shift) most significant of the low 8 bits of
       * the color value then indexed by the upper 8 bits:
       *

png.h

@@ -1,8 +1,8 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.5.6beta03 - September 28, 2011
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * libpng version 1.5.14rc01 - January 17, 2013
+ * Copyright (c) 1998-2013 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 @@
  * Authors and maintainers:
  *   libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
  *   libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
- *   libpng versions 0.97, January 1998, through 1.5.6beta03 - September 28, 2011: Glenn
+ *   libpng versions 0.97, January 1998, through 1.5.14rc01 - January 17, 2013: Glenn
  *   See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -160,7 +160,29 @@
  *    1.5.5beta01-08          15    10505  15.so.15.5[.0]
  *    1.5.5rc01               15    10505  15.so.15.5[.0]
  *    1.5.5                   15    10505  15.so.15.5[.0]
- *    1.5.6beta01-03          15    10506  15.so.15.6[.0]
+ *    1.5.6beta01-07          15    10506  15.so.15.6[.0]
+ *    1.5.6rc01-03            15    10506  15.so.15.6[.0]
+ *    1.5.6                   15    10506  15.so.15.6[.0]
+ *    1.5.7beta01-05          15    10507  15.so.15.7[.0]
+ *    1.5.7rc01-03            15    10507  15.so.15.7[.0]
+ *    1.5.7                   15    10507  15.so.15.7[.0]
+ *    1.5.8beta01             15    10508  15.so.15.8[.0]
+ *    1.5.8rc01               15    10508  15.so.15.8[.0]
+ *    1.5.8                   15    10508  15.so.15.8[.0]
+ *    1.5.9beta01-02          15    10509  15.so.15.9[.0]
+ *    1.5.9rc01               15    10509  15.so.15.9[.0]
+ *    1.5.9                   15    10509  15.so.15.9[.0]
+ *    1.5.10beta01-05         15    10510  15.so.15.10[.0]
+ *    1.5.10                  15    10510  15.so.15.10[.0]
+ *    1.5.11beta01            15    10511  15.so.15.11[.0]
+ *    1.5.11rc01-05           15    10511  15.so.15.11[.0]
+ *    1.5.11                  15    10511  15.so.15.11[.0]
+ *    1.5.12                  15    10512  15.so.15.12[.0]
+ *    1.5.13beta01-02         15    10513  15.so.15.13[.0]
+ *    1.5.13rc01              15    10513  15.so.15.13[.0]
+ *    1.5.13                  15    10513  15.so.15.13[.0]
+ *    1.5.14beta01-08         15    10514  15.so.15.14[.0]
+ *    1.5.14rc01              15    10514  15.so.15.14[.0]
  *
  *   Henceforth the source version will match the shared-library major
  *   and minor numbers; the shared-library major version number will be
@@ -170,7 +192,7 @@
  *   to the source version x.y.z (leading zeros in y and z).  Beta versions
  *   were given the previous public release number plus a letter, until
  *   version 1.0.6j; from then on they were given the upcoming public
- *   release number plus "betaNN" or "rcN".
+ *   release number plus "betaNN" or "rcNN".
  *
  *   Binary incompatibility exists only when applications make direct access
  *   to the info_ptr or png_ptr members through png.h, and the compiled
@@ -192,8 +214,8 @@
  *
  * This code is released under the libpng license.
  *
- * libpng versions 1.2.6, August 15, 2004, through 1.5.6beta03, September 28, 2011, are
- * Copyright (c) 2004, 2006-2011 Glenn Randers-Pehrson, and are
+ * libpng versions 1.2.6, August 15, 2004, through 1.5.14rc01, January 17, 2013, are
+ * Copyright (c) 2004, 2006-2013 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:
  *
@@ -304,13 +326,13 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    September 28, 2011
+ *    January 17, 2013
  *
  *    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 1.5.6beta03 are Y2K compliant.  It is my belief that
+ *    upward through 1.5.14rc01 are Y2K compliant.  It is my belief that
  *    earlier versions were also Y2K compliant.
  *
  *    Libpng only has two year fields.  One is a 2-byte unsigned integer
@@ -321,7 +343,8 @@
  *        "png_uint_16 year" in png_time_struct.
  *
  *    The string is
- *        "png_char time_buffer" in png_struct
+ *        "char time_buffer[29]" in png_struct.  This will be no
+ *    longer used in libpng-1.6.0 and will be removed from libpng-1.7.0.
  *
  *    There are seven time-related functions:
  *        png.c: png_convert_to_rfc_1123() in png.c
@@ -362,12 +385,15 @@
  * describes how to use libpng, and the file example.c summarizes it
  * with some code on which to build.  This file is useful for looking
  * at the actual function definitions and structure components.
+ *
+ * If you just need to read a PNG file and don't want to read the documentation
+ * skip to the end of this file and read the section entitled 'simplified API'.
  */
 
 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.5.6beta03"
+#define PNG_LIBPNG_VER_STRING "1.5.14rc01"
 #define PNG_HEADER_VERSION_STRING \
-     " libpng version 1.5.6beta03 - September 28, 2011\n"
+     " libpng version 1.5.14rc01 - January 17, 2013\n"
 
 #define PNG_LIBPNG_VER_SONUM   15
 #define PNG_LIBPNG_VER_DLLNUM  15
@@ -375,12 +401,13 @@
 /* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
 #define PNG_LIBPNG_VER_MAJOR   1
 #define PNG_LIBPNG_VER_MINOR   5
-#define PNG_LIBPNG_VER_RELEASE 6
+#define PNG_LIBPNG_VER_RELEASE 14
+
 /* This should match the numeric part of the final component of
  * PNG_LIBPNG_VER_STRING, omitting any leading zero:
  */
 
-#define PNG_LIBPNG_VER_BUILD  03
+#define PNG_LIBPNG_VER_BUILD  01
 
 /* Release Status */
 #define PNG_LIBPNG_BUILD_ALPHA    1
@@ -397,7 +424,7 @@
 #define PNG_LIBPNG_BUILD_SPECIAL 32 /* Cannot be OR'ed with
                                        PNG_LIBPNG_BUILD_PRIVATE */
 
-#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_BETA
+#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_RC
 
 /* Careful here.  At one time, Guy wanted to use 082, but that would be octal.
  * We must not include leading zeros.
@@ -405,7 +432,7 @@
  * version 1.0.0 was mis-numbered 100 instead of 10000).  From
  * version 1.0.1 it's    xxyyzz, where x=major, y=minor, z=release
  */
-#define PNG_LIBPNG_VER 10506 /* 1.5.6 */
+#define PNG_LIBPNG_VER 10514 /* 1.5.14 */
 
 /* Library configuration: these options cannot be changed after
  * the library has been built.
@@ -527,7 +554,7 @@ extern "C" {
 /* This triggers a compiler error in png.c, if png.c and png.h
  * do not agree upon the version number.
  */
-typedef char* png_libpng_version_1_5_6beta03;
+typedef char* png_libpng_version_1_5_14rc01;
 
 /* Three color definitions.  The order of the red, green, and blue, (and the
  * exact size) is not important, although the size of the fields need to
@@ -602,11 +629,20 @@ typedef png_sPLT_t FAR * FAR * png_sPLT_tpp;
 #ifdef PNG_TEXT_SUPPORTED
 /* png_text holds the contents of a text/ztxt/itxt chunk in a PNG file,
  * and whether that contents is compressed or not.  The "key" field
- * points to a regular zero-terminated C string.  The "text", "lang", and
- * "lang_key" fields can be regular C strings, empty strings, or NULL pointers.
+ * points to a regular zero-terminated C string.  The "text" fields can be a
+ * regular C string, an empty string, or a NULL pointer.
  * However, the structure returned by png_get_text() will always contain
- * regular zero-terminated C strings (possibly empty), never NULL pointers,
- * so they can be safely used in printf() and other string-handling functions.
+ * the "text" field as a regular zero-terminated C string (possibly
+ * empty), never a NULL pointer, so it can be safely used in printf() and
+ * other string-handling functions.  Note that the "itxt_length", "lang", and
+ * "lang_key" members of the structure only exist when the library is built
+ * with iTXt chunk support.  Prior to libpng-1.4.0 the library was built by
+ * default without iTXt support. Also note that when iTXt *is* supported,
+ * the "lang" and "lang_key" fields contain NULL pointers when the
+ * "compression" field contains * PNG_TEXT_COMPRESSION_NONE or
+ * PNG_TEXT_COMPRESSION_zTXt. Note that the "compression value" is not the
+ * same as what appears in the PNG tEXt/zTXt/iTXt chunk's "compression flag"
+ * which is always 0 or 1, or its "compression method" which is always 0.
  */
 typedef struct png_text_struct
 {
@@ -1121,10 +1157,15 @@ PNG_EXPORT(31, void, png_set_gray_to_rgb, (png_structp png_ptr));
 
 #ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
 /* Reduce RGB to grayscale. */
+#define PNG_ERROR_ACTION_NONE  1
+#define PNG_ERROR_ACTION_WARN  2
+#define PNG_ERROR_ACTION_ERROR 3
+#define PNG_RGB_TO_GRAY_DEFAULT (-1)/*for red/green coefficients*/
+
 PNG_FP_EXPORT(32, void, png_set_rgb_to_gray, (png_structp png_ptr,
-    int error_action, double red, double green));
+    int error_action, double red, double green))
 PNG_FIXED_EXPORT(33, void, png_set_rgb_to_gray_fixed, (png_structp png_ptr,
-    int error_action, png_fixed_point red, png_fixed_point green));
+    int error_action, png_fixed_point red, png_fixed_point green))
 
 PNG_EXPORT(34, png_byte, png_get_rgb_to_gray_status, (png_const_structp
     png_ptr));
@@ -1192,9 +1233,9 @@ PNG_EXPORT(35, void, png_build_grayscale_palette, (int bit_depth,
 #define PNG_ALPHA_BROKEN        3 /* the alpha channel is gamma encoded */
 
 PNG_FP_EXPORT(227, void, png_set_alpha_mode, (png_structp png_ptr, int mode,
-    double output_gamma));
+    double output_gamma))
 PNG_FIXED_EXPORT(228, void, png_set_alpha_mode_fixed, (png_structp png_ptr,
-    int mode, png_fixed_point output_gamma));
+    int mode, png_fixed_point output_gamma))
 #endif
 
 #if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_ALPHA_MODE_SUPPORTED)
@@ -1417,10 +1458,10 @@ PNG_EXPORT(46, void, png_set_invert_mono, (png_structp png_ptr));
  */
 PNG_FP_EXPORT(47, void, png_set_background, (png_structp png_ptr,
     png_const_color_16p background_color, int background_gamma_code,
-    int need_expand, double background_gamma));
+    int need_expand, double background_gamma))
 PNG_FIXED_EXPORT(215, void, png_set_background_fixed, (png_structp png_ptr,
     png_const_color_16p background_color, int background_gamma_code,
-    int need_expand, png_fixed_point background_gamma));
+    int need_expand, png_fixed_point background_gamma))
 #endif
 #ifdef PNG_READ_BACKGROUND_SUPPORTED
 #  define PNG_BACKGROUND_GAMMA_UNKNOWN 0
@@ -1469,9 +1510,9 @@ PNG_EXPORT(49, void, png_set_quantize,
  */
 PNG_FP_EXPORT(50, void, png_set_gamma,
     (png_structp png_ptr, double screen_gamma,
-    double override_file_gamma));
+    double override_file_gamma))
 PNG_FIXED_EXPORT(208, void, png_set_gamma_fixed, (png_structp png_ptr,
-    png_fixed_point screen_gamma, png_fixed_point override_file_gamma));
+    png_fixed_point screen_gamma, png_fixed_point override_file_gamma))
 #endif
 
 #ifdef PNG_WRITE_FLUSH_SUPPORTED
@@ -1631,11 +1672,11 @@ PNG_EXPORT(67, void, png_set_filter,
  */
 PNG_FP_EXPORT(68, void, png_set_filter_heuristics, (png_structp png_ptr,
     int heuristic_method, int num_weights, png_const_doublep filter_weights,
-    png_const_doublep filter_costs));
+    png_const_doublep filter_costs))
 PNG_FIXED_EXPORT(209, void, png_set_filter_heuristics_fixed,
     (png_structp png_ptr,
     int heuristic_method, int num_weights, png_const_fixed_point_p
-    filter_weights, png_const_fixed_point_p filter_costs));
+    filter_weights, png_const_fixed_point_p filter_costs))
 #endif /*  PNG_WRITE_WEIGHTED_FILTER_SUPPORTED */
 
 /* Heuristic used for row filter selection.  These defines should NOT be
@@ -1831,6 +1872,7 @@ PNG_EXPORT(219, png_size_t, png_process_data_pause, (png_structp, int save));
  */
 PNG_EXPORT(220, png_uint_32, png_process_data_skip, (png_structp));
 
+#ifdef PNG_READ_INTERLACING_SUPPORTED
 /* Function that combines rows.  'new_row' is a flag that should come from
  * the callback and be non-NULL if anything needs to be done; the library
  * stores its own version of the new data internally and ignores the passed
@@ -1838,6 +1880,7 @@ PNG_EXPORT(220, png_uint_32, png_process_data_skip, (png_structp));
  */
 PNG_EXPORT(93, void, png_progressive_combine_row, (png_structp png_ptr,
     png_bytep old_row, png_const_bytep new_row));
+#endif /* PNG_READ_INTERLACING_SUPPORTED */
 #endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
 
 PNG_EXPORTA(94, png_voidp, png_malloc,
@@ -2015,9 +2058,9 @@ PNG_EXPORT(124, png_uint_32, png_get_y_pixels_per_meter,
 
 /* Returns pixel aspect ratio, computed from pHYs chunk data.  */
 PNG_FP_EXPORT(125, float, png_get_pixel_aspect_ratio,
-    (png_const_structp png_ptr, png_const_infop info_ptr));
+    (png_const_structp png_ptr, png_const_infop info_ptr))
 PNG_FIXED_EXPORT(210, png_fixed_point, png_get_pixel_aspect_ratio_fixed,
-    (png_const_structp png_ptr, png_const_infop info_ptr));
+    (png_const_structp png_ptr, png_const_infop info_ptr))
 
 /* Returns image x, y offset in pixels or microns, from oFFs chunk data. */
 PNG_EXPORT(126, png_int_32, png_get_x_offset_pixels,
@@ -2050,11 +2093,11 @@ PNG_EXPORT(132, void, png_set_bKGD, (png_structp png_ptr, png_infop info_ptr,
 PNG_FP_EXPORT(133, png_uint_32, png_get_cHRM, (png_const_structp png_ptr,
    png_const_infop info_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));
+    double *blue_y))
 PNG_FP_EXPORT(230, png_uint_32, png_get_cHRM_XYZ, (png_structp png_ptr,
     png_const_infop info_ptr, double *red_X, double *red_Y, double *red_Z,
     double *green_X, double *green_Y, double *green_Z, double *blue_X,
-    double *blue_Y, double *blue_Z));
+    double *blue_Y, double *blue_Z))
 #ifdef PNG_FIXED_POINT_SUPPORTED /* Otherwise not implemented */
 PNG_FIXED_EXPORT(134, png_uint_32, png_get_cHRM_fixed,
     (png_const_structp png_ptr,
@@ -2062,7 +2105,7 @@ PNG_FIXED_EXPORT(134, png_uint_32, png_get_cHRM_fixed,
     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));
+    png_fixed_point *int_blue_y))
 #endif
 PNG_FIXED_EXPORT(231, png_uint_32, png_get_cHRM_XYZ_fixed,
     (png_structp png_ptr, png_const_infop info_ptr,
@@ -2070,46 +2113,46 @@ PNG_FIXED_EXPORT(231, png_uint_32, png_get_cHRM_XYZ_fixed,
     png_fixed_point *int_red_Z, png_fixed_point *int_green_X,
     png_fixed_point *int_green_Y, png_fixed_point *int_green_Z,
     png_fixed_point *int_blue_X, png_fixed_point *int_blue_Y,
-    png_fixed_point *int_blue_Z));
+    png_fixed_point *int_blue_Z))
 #endif
 
 #ifdef PNG_cHRM_SUPPORTED
 PNG_FP_EXPORT(135, void, png_set_cHRM,
     (png_structp png_ptr, png_infop info_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));
+    double green_y, double blue_x, double blue_y))
 PNG_FP_EXPORT(232, void, png_set_cHRM_XYZ, (png_structp png_ptr,
     png_infop info_ptr, double red_X, double red_Y, double red_Z,
     double green_X, double green_Y, double green_Z, double blue_X,
-    double blue_Y, double blue_Z));
+    double blue_Y, double blue_Z))
 PNG_FIXED_EXPORT(136, void, png_set_cHRM_fixed, (png_structp png_ptr,
     png_infop info_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));
+    png_fixed_point int_blue_y))
 PNG_FIXED_EXPORT(233, void, png_set_cHRM_XYZ_fixed, (png_structp png_ptr,
     png_infop info_ptr, png_fixed_point int_red_X, png_fixed_point int_red_Y,
     png_fixed_point int_red_Z, png_fixed_point int_green_X,
     png_fixed_point int_green_Y, png_fixed_point int_green_Z,
     png_fixed_point int_blue_X, png_fixed_point int_blue_Y,
-    png_fixed_point int_blue_Z));
+    png_fixed_point int_blue_Z))
 #endif
 
 #ifdef PNG_gAMA_SUPPORTED
 PNG_FP_EXPORT(137, png_uint_32, png_get_gAMA,
     (png_const_structp png_ptr, png_const_infop info_ptr,
-    double *file_gamma));
+    double *file_gamma))
 PNG_FIXED_EXPORT(138, png_uint_32, png_get_gAMA_fixed,
     (png_const_structp png_ptr, png_const_infop info_ptr,
-    png_fixed_point *int_file_gamma));
+    png_fixed_point *int_file_gamma))
 #endif
 
 #ifdef PNG_gAMA_SUPPORTED
 PNG_FP_EXPORT(139, void, png_set_gAMA, (png_structp png_ptr,
-    png_infop info_ptr, double file_gamma));
+    png_infop info_ptr, double file_gamma))
 PNG_FIXED_EXPORT(140, void, png_set_gAMA_fixed, (png_structp png_ptr,
-    png_infop info_ptr, png_fixed_point int_file_gamma));
+    png_infop info_ptr, png_fixed_point int_file_gamma))
 #endif
 
 #ifdef PNG_hIST_SUPPORTED
@@ -2275,7 +2318,7 @@ PNG_EXPORT(167, void, png_set_tRNS,
 #ifdef PNG_sCAL_SUPPORTED
 PNG_FP_EXPORT(168, png_uint_32, png_get_sCAL,
     (png_const_structp png_ptr, png_const_infop info_ptr,
-    int *unit, double *width, double *height));
+    int *unit, double *width, double *height))
 #ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
 /* NOTE: this API is currently implemented using floating point arithmetic,
  * consequently it can only be used on systems with floating point support.
@@ -2285,7 +2328,7 @@ PNG_FP_EXPORT(168, png_uint_32, png_get_sCAL,
 PNG_FIXED_EXPORT(214, png_uint_32, png_get_sCAL_fixed,
     (png_structp png_ptr, png_const_infop info_ptr, int *unit,
     png_fixed_point *width,
-    png_fixed_point *height));
+    png_fixed_point *height))
 #endif
 PNG_EXPORT(169, png_uint_32, png_get_sCAL_s,
     (png_const_structp png_ptr, png_const_infop info_ptr,
@@ -2293,10 +2336,10 @@ PNG_EXPORT(169, png_uint_32, png_get_sCAL_s,
 
 PNG_FP_EXPORT(170, void, png_set_sCAL,
     (png_structp png_ptr, png_infop info_ptr,
-    int unit, double width, double height));
+    int unit, double width, double height))
 PNG_FIXED_EXPORT(213, void, png_set_sCAL_fixed, (png_structp png_ptr,
    png_infop info_ptr, int unit, png_fixed_point width,
-   png_fixed_point height));
+   png_fixed_point height))
 PNG_EXPORT(171, void, png_set_sCAL_s,
     (png_structp png_ptr, png_infop info_ptr,
     int unit, png_const_charp swidth, png_const_charp sheight));
@@ -2409,17 +2452,17 @@ PNG_EXPORT(195, png_uint_32, png_get_y_pixels_per_inch,
     (png_const_structp png_ptr, png_const_infop info_ptr));
 
 PNG_FP_EXPORT(196, float, png_get_x_offset_inches,
-    (png_const_structp png_ptr, png_const_infop info_ptr));
+    (png_const_structp png_ptr, png_const_infop info_ptr))
 #ifdef PNG_FIXED_POINT_SUPPORTED /* otherwise not implemented. */
 PNG_FIXED_EXPORT(211, png_fixed_point, png_get_x_offset_inches_fixed,
-    (png_structp png_ptr, png_const_infop info_ptr));
+    (png_structp png_ptr, png_const_infop info_ptr))
 #endif
 
 PNG_FP_EXPORT(197, float, png_get_y_offset_inches, (png_const_structp png_ptr,
-    png_const_infop info_ptr));
+    png_const_infop info_ptr))
 #ifdef PNG_FIXED_POINT_SUPPORTED /* otherwise not implemented. */
 PNG_FIXED_EXPORT(212, png_fixed_point, png_get_y_offset_inches_fixed,
-    (png_structp png_ptr, png_const_infop info_ptr));
+    (png_structp png_ptr, png_const_infop info_ptr))
 #endif
 
 #  ifdef PNG_pHYs_SUPPORTED
@@ -2460,8 +2503,16 @@ PNG_EXPORT(216, png_uint_32, png_get_io_chunk_type,
  * full, image which appears in a given pass.  'pass' is in the range 0
  * to 6 and the result is in the range 0 to 7.
  */
-#define PNG_PASS_START_ROW(pass) (((1U&~(pass))<<(3-((pass)>>1)))&7)
-#define PNG_PASS_START_COL(pass) (((1U& (pass))<<(3-(((pass)+1)>>1)))&7)
+#define PNG_PASS_START_ROW(pass) (((1&~(pass))<<(3-((pass)>>1)))&7)
+#define PNG_PASS_START_COL(pass) (((1& (pass))<<(3-(((pass)+1)>>1)))&7)
+
+/* A macro to return the offset between pixels in the output row for a pair of
+ * pixels in the input - effectively the inverse of the 'COL_SHIFT' macro that
+ * follows.  Note that ROW_OFFSET is the offset from one row to the next whereas
+ * COL_OFFSET is from one column to the next, within a row.
+ */
+#define PNG_PASS_ROW_OFFSET(pass) ((pass)>2?(8>>(((pass)-1)>>1)):8)
+#define PNG_PASS_COL_OFFSET(pass) (1<<((7-(pass))>>1))
 
 /* Two macros to help evaluate the number of rows or columns in each
  * pass.  This is expressed as a shift - effectively log2 of the number or
@@ -2496,8 +2547,8 @@ PNG_EXPORT(216, png_uint_32, png_get_io_chunk_type,
  * the tile.
  */
 #define PNG_PASS_MASK(pass,off) ( \
-   ((0x110145AFU>>(((7-(off))-(pass))<<2)) & 0xFU) | \
-   ((0x01145AF0U>>(((7-(off))-(pass))<<2)) & 0xF0U))
+   ((0x110145AF>>(((7-(off))-(pass))<<2)) & 0xF) | \
+   ((0x01145AF0>>(((7-(off))-(pass))<<2)) & 0xF0))
 
 #define PNG_ROW_IN_INTERLACE_PASS(y, pass) \
    ((PNG_PASS_MASK(pass,0) >> ((y)&7)) & 1)
@@ -2598,6 +2649,12 @@ PNG_EXPORT(207, void, png_save_uint_16, (png_bytep buf, unsigned int i));
       : (png_int_32)png_get_uint_32(buf)))
 #endif
 
+#if defined(PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED) || \
+    defined(PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED)
+PNG_EXPORT(234, void, png_set_check_for_invalid_index, (png_structp png_ptr,
+    int allowed));
+#endif
+
 /* Maintainer: Put new public prototypes here ^, in libpng.3, and project
  * defs
  */
@@ -2607,7 +2664,7 @@ PNG_EXPORT(207, void, png_save_uint_16, (png_bytep buf, unsigned int i));
  * scripts/symbols.def as well.
  */
 #ifdef PNG_EXPORT_LAST_ORDINAL
-  PNG_EXPORT_LAST_ORDINAL(233);
+  PNG_EXPORT_LAST_ORDINAL(234);
 #endif
 
 #ifdef __cplusplus

pngconf.h

@@ -1,9 +1,9 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.5.6beta03 - September 28, 2011
+ * libpng version 1.5.14rc01 - January 17, 2013
  *
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2013 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.)
  *
@@ -25,7 +25,7 @@
 #ifndef PNG_BUILDING_SYMBOL_TABLE
 /* PNG_NO_LIMITS_H may be used to turn off the use of the standard C
  * definition file for  machine specific limits, this may impact the
- * correctness of the definitons below (see uses of INT_MAX).
+ * correctness of the definitions below (see uses of INT_MAX).
  */
 #  ifndef PNG_NO_LIMITS_H
 #    include <limits.h>
@@ -51,8 +51,8 @@
 
 /* This controls optimization of the reading of 16 and 32 bit values
  * from PNG files.  It can be set on a per-app-file basis - it
- * just changes whether a macro is used to the function is called.
- * The library builder sets the default, if read functions are not
+ * just changes whether a macro is used when the function is called.
+ * The library builder sets the default; if read functions are not
  * built into the library the macro implementation is forced on.
  */
 #ifndef PNG_READ_INT_FUNCTIONS_SUPPORTED
@@ -177,18 +177,16 @@
  * ==========================
  * This code is used at build time to find PNG_IMPEXP, the API settings
  * and PNG_EXPORT_TYPE(), it may also set a macro to indicate the DLL
- * import processing is possible.  On Windows/x86 systems it also sets
+ * import processing is possible.  On Windows systems it also sets
  * compiler-specific macros to the values required to change the calling
  * conventions of the various functions.
  */
-#if ( defined(_Windows) || defined(_WINDOWS) || defined(WIN32) ||\
-      defined(_WIN32) || defined(__WIN32__) || defined(__CYGWIN__) ) &&\
-    ( defined(_X86_) || defined(_X64_) || defined(_M_IX86) ||\
-      defined(_M_X64) || defined(_M_IA64) )
-  /* Windows system (DOS doesn't support DLLs) running on x86/x64.  Includes
-   * builds under Cygwin or MinGW.  Also includes Watcom builds but these need
-   * special treatment because they are not compatible with GCC or Visual C
-   * because of different calling conventions.
+#if defined(_Windows) || defined(_WINDOWS) || defined(WIN32) ||\
+    defined(_WIN32) || defined(__WIN32__) || defined(__CYGWIN__)
+  /* Windows system (DOS doesn't support DLLs).  Includes builds under Cygwin or
+   * MinGW on any architecture currently supported by Windows.  Also includes
+   * Watcom builds but these need special treatment because they are not
+   * compatible with GCC or Visual C because of different calling conventions.
    */
 #  if PNG_API_RULE == 2
     /* If this line results in an error, either because __watcall is not
@@ -202,6 +200,9 @@
 #  if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800))
 #    define PNGCAPI __cdecl
 #    if PNG_API_RULE == 1
+       /* If this line results in an error __stdcall is not understood and
+        * PNG_API_RULE should not have been set to '1'.
+        */
 #      define PNGAPI __stdcall
 #    endif
 #  else
@@ -239,7 +240,7 @@
 #    endif
 #  endif /* compiler */
 
-#else /* !Windows/x86 */
+#else /* !Windows */
 #  if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
 #    define PNGAPI _System
 #  else /* !Windows/x86 && !OS/2 */
@@ -344,21 +345,23 @@
 #    ifndef PNG_NORETURN
 #      define PNG_NORETURN   __attribute__((__noreturn__))
 #    endif
-#    ifndef PNG_ALLOCATED
-#      define PNG_ALLOCATED  __attribute__((__malloc__))
-#    endif
-#    ifndef PNG_DEPRECATED
-#      define PNG_DEPRECATED __attribute__((__deprecated__))
-#    endif
-#    ifndef PNG_PRIVATE
-#      if 0 /* Doesn't work so we use deprecated instead*/
-#        define PNG_PRIVATE \
-          __attribute__((warning("This function is not exported by libpng.")))
-#      else
-#        define PNG_PRIVATE \
-          __attribute__((__deprecated__))
+#    if __GNUC__ >= 3
+#      ifndef PNG_ALLOCATED
+#        define PNG_ALLOCATED  __attribute__((__malloc__))
 #      endif
-#    endif
+#      ifndef PNG_DEPRECATED
+#        define PNG_DEPRECATED __attribute__((__deprecated__))
+#      endif
+#      ifndef PNG_PRIVATE
+#        if 0 /* Doesn't work so we use deprecated instead*/
+#          define PNG_PRIVATE \
+            __attribute__((warning("This function is not exported by libpng.")))
+#        else
+#          define PNG_PRIVATE \
+            __attribute__((__deprecated__))
+#        endif
+#      endif
+#    endif /*  __GNUC__ >= 3 */
 #  endif /* __GNUC__ */
 
 #  if defined(_MSC_VER)  && (_MSC_VER >= 1300)
@@ -366,10 +369,10 @@
 #      define PNG_USE_RESULT /* not supported */
 #    endif
 #    ifndef PNG_NORETURN
-#      define PNG_NORETURN   __declspec(noreturn)
+#      define PNG_NORETURN __declspec(noreturn)
 #    endif
 #    ifndef PNG_ALLOCATED
-#      if defined(_MSC_VER)  && (_MSC_VER >= 1300)
+#      if (_MSC_VER >= 1400)
 #        define PNG_ALLOCATED __declspec(restrict)
 #      endif
 #    endif
@@ -400,7 +403,7 @@
 #ifndef PNG_FP_EXPORT     /* A floating point API. */
 #  ifdef PNG_FLOATING_POINT_SUPPORTED
 #     define PNG_FP_EXPORT(ordinal, type, name, args)\
-         PNG_EXPORT(ordinal, type, name, args)
+         PNG_EXPORT(ordinal, type, name, args);
 #  else                   /* No floating point APIs */
 #     define PNG_FP_EXPORT(ordinal, type, name, args)
 #  endif
@@ -408,7 +411,7 @@
 #ifndef PNG_FIXED_EXPORT  /* A fixed point API. */
 #  ifdef PNG_FIXED_POINT_SUPPORTED
 #     define PNG_FIXED_EXPORT(ordinal, type, name, args)\
-         PNG_EXPORT(ordinal, type, name, args)
+         PNG_EXPORT(ordinal, type, name, args);
 #  else                   /* No fixed point APIs */
 #     define PNG_FIXED_EXPORT(ordinal, type, name, args)
 #  endif

pngerror.c

@@ -1,8 +1,8 @@
 
 /* pngerror.c - stub functions for i/o and memory allocation
  *
- * Last changed in libpng 1.5.6 [(PENDING RELEASE)]
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.14 [(PENDING RELEASE)]
+ * Copyright (c) 1998-2013 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.)
  *
@@ -161,7 +161,7 @@ png_format_number(png_const_charp start, png_charp end, int format,
          case PNG_NUMBER_FORMAT_02u:
             /* Expects at least 2 digits. */
             mincount = 2;
-            /* fall through */
+            /* FALL THROUGH */
 
          case PNG_NUMBER_FORMAT_u:
             *--end = digits[number % 10];
@@ -171,7 +171,7 @@ png_format_number(png_const_charp start, png_charp end, int format,
          case PNG_NUMBER_FORMAT_02x:
             /* This format expects at least two digits */
             mincount = 2;
-            /* fall through */
+            /* FALL THROUGH */
 
          case PNG_NUMBER_FORMAT_x:
             *--end = digits[number & 0xf];
@@ -281,35 +281,40 @@ void
 png_formatted_warning(png_structp png_ptr, png_warning_parameters p,
    png_const_charp message)
 {
-   /* The internal buffer is just 128 bytes - enough for all our messages,
-    * overflow doesn't happen because this code checks!
+   /* The internal buffer is just 192 bytes - enough for all our messages,
+    * overflow doesn't happen because this code checks!  If someone figures
+    * out how to send us a message longer than 192 bytes, all that will
+    * happen is that the message will be truncated appropriately.
     */
-   size_t i;
-   char msg[128];
+   size_t i = 0; /* Index in the msg[] buffer: */
+   char msg[192];
 
-   for (i=0; i<(sizeof msg)-1 && *message != '\0'; ++i)
+   /* Each iteration through the following loop writes at most one character
+    * to msg[i++] then returns here to validate that there is still space for
+    * the trailing '\0'.  It may (in the case of a parameter) read more than
+    * one character from message[]; it must check for '\0' and continue to the
+    * test if it finds the end of string.
+    */
+   while (i<(sizeof msg)-1 && *message != '\0')
    {
-      if (*message == '@')
+      /* '@' at end of string is now just printed (previously it was skipped);
+       * it is an error in the calling code to terminate the string with @.
+       */
+      if (p != NULL && *message == '@' && message[1] != '\0')
       {
-         int parameter = -1;
-         switch (*++message)
-         {
-            case '1':
-               parameter = 0;
-               break;
+         int parameter_char = *++message; /* Consume the '@' */
+         static const char valid_parameters[] = "123456789";
+         int parameter = 0;
 
-            case '2':
-               parameter = 1;
-               break;
+         /* Search for the parameter digit, the index in the string is the
+          * parameter to use.
+          */
+         while (valid_parameters[parameter] != parameter_char &&
+            valid_parameters[parameter] != '\0')
+            ++parameter;
 
-            case '\0':
-               continue; /* To break out of the for loop above. */
-
-            default:
-               break;
-         }
-
-         if (parameter >= 0 && parameter < PNG_WARNING_PARAMETER_COUNT)
+         /* If the parameter digit is out of range it will just get printed. */
+         if (parameter < PNG_WARNING_PARAMETER_COUNT)
          {
             /* Append this parameter */
             png_const_charp parm = p[parameter];
@@ -319,28 +324,32 @@ png_formatted_warning(png_structp png_ptr, png_warning_parameters p,
              * that parm[] has been initialized, so there is no guarantee of a
              * trailing '\0':
              */
-            for (; i<(sizeof msg)-1 && parm != '\0' && parm < pend; ++i)
-               msg[i] = *parm++;
+            while (i<(sizeof msg)-1 && *parm != '\0' && parm < pend)
+               msg[i++] = *parm++;
 
+            /* Consume the parameter digit too: */
             ++message;
             continue;
          }
 
          /* else not a parameter and there is a character after the @ sign; just
-          * copy that.
+          * copy that.  This is known not to be '\0' because of the test above.
           */
       }
 
       /* At this point *message can't be '\0', even in the bad parameter case
        * above where there is a lone '@' at the end of the message string.
        */
-      msg[i] = *message++;
+      msg[i++] = *message++;
    }
 
    /* i is always less than (sizeof msg), so: */
    msg[i] = '\0';
 
-   /* And this is the formatted message: */
+   /* And this is the formatted message, it may be larger than
+    * PNG_MAX_ERROR_TEXT, but that is only used for 'chunk' errors and these are
+    * not (currently) formatted.
+    */
    png_warning(png_ptr, msg);
 }
 #endif /* PNG_WARNINGS_SUPPORTED */

pngget.c

@@ -1,7 +1,7 @@
 
 /* pngget.c - retrieval of values from info struct
  *
- * Last changed in libpng 1.5.6 [(PENDING RELEASE)]
+ * Last changed in libpng 1.5.14 [(PENDING RELEASE)]
  * Copyright (c) 1998-2011 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.)
@@ -175,6 +175,9 @@ png_get_pixel_aspect_ratio(png_const_structp png_ptr, png_const_infop info_ptr)
          return ((float)((float)info_ptr->y_pixels_per_unit
              /(float)info_ptr->x_pixels_per_unit));
    }
+#else
+   PNG_UNUSED(png_ptr)
+   PNG_UNUSED(info_ptr)
 #endif
 
    return ((float)0.0);
@@ -203,6 +206,9 @@ png_get_pixel_aspect_ratio_fixed(png_const_structp png_ptr,
           (png_int_32)info_ptr->x_pixels_per_unit))
          return res;
    }
+#else
+   PNG_UNUSED(png_ptr)
+   PNG_UNUSED(info_ptr)
 #endif
 
    return 0;
@@ -682,15 +688,16 @@ png_get_iCCP(png_const_structp png_ptr, png_const_infop info_ptr,
    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)
+       && name != NULL && compression_type != NULL && profile != NULL &&
+		 proflen != NULL)
    {
       *name = info_ptr->iccp_name;
       *profile = info_ptr->iccp_profile;
       /* Compression_type is a dummy so the API won't have to change
        * if we introduce multiple compression types later.
        */
-      *proflen = (int)info_ptr->iccp_proflen;
-      *compression_type = (int)info_ptr->iccp_compression;
+      *proflen = info_ptr->iccp_proflen;
+      *compression_type = info_ptr->iccp_compression;
       return (PNG_INFO_iCCP);
    }
 
@@ -1068,7 +1075,6 @@ png_get_compression_buffer_size(png_const_structp png_ptr)
    return (png_ptr ? png_ptr->zbuf_size : 0);
 }
 
-
 #ifdef PNG_SET_USER_LIMITS_SUPPORTED
 /* These functions were added to libpng 1.2.6 and were enabled
  * by default in libpng-1.4.0 */

pngmem.c

@@ -1,8 +1,8 @@
 
 /* pngmem.c - stub functions for memory allocation
  *
- * Last changed in libpng 1.5.4 [July 7, 2011]
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.13 [September 27, 2012]
+ * Copyright (c) 1998-2012 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.)
  *
@@ -56,9 +56,9 @@ png_create_struct_2,(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr),
    if (malloc_fn != NULL)
    {
       png_struct dummy_struct;
-      png_structp png_ptr = &dummy_struct;
-      png_ptr->mem_ptr=mem_ptr;
-      struct_ptr = (*(malloc_fn))(png_ptr, (png_uint_32)size);
+      png_memset(&dummy_struct, 0, sizeof dummy_struct);
+      dummy_struct.mem_ptr=mem_ptr;
+      struct_ptr = (*(malloc_fn))(&dummy_struct, (png_alloc_size_t)size);
    }
 
    else
@@ -90,9 +90,9 @@ png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
       if (free_fn != NULL)
       {
          png_struct dummy_struct;
-         png_structp png_ptr = &dummy_struct;
-         png_ptr->mem_ptr=mem_ptr;
-         (*(free_fn))(png_ptr, struct_ptr);
+         png_memset(&dummy_struct, 0, sizeof dummy_struct);
+         dummy_struct.mem_ptr=mem_ptr;
+         (*(free_fn))(&dummy_struct, struct_ptr);
          return;
       }
 
@@ -143,7 +143,7 @@ png_malloc,(png_structp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)
 
 #  ifdef PNG_USER_MEM_SUPPORTED
    if (png_ptr->malloc_fn != NULL)
-      ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, (png_size_t)size));
+      ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, size));
 
    else
       ret = (png_malloc_default(png_ptr, size));

pngpread.c

@@ -1,8 +1,8 @@
 
 /* pngpread.c - read a png file in push mode
  *
- * Last changed in libpng 1.5.6 [(PENDING RELEASE)]
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.11 [June 14, 2012]
+ * Copyright (c) 1998-2012 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.)
  *
@@ -128,30 +128,6 @@ png_process_some_data(png_structp png_ptr, png_infop info_ptr)
          break;
       }
 
-#ifdef PNG_READ_tEXt_SUPPORTED
-      case PNG_READ_tEXt_MODE:
-      {
-         png_push_read_tEXt(png_ptr, info_ptr);
-         break;
-      }
-
-#endif
-#ifdef PNG_READ_zTXt_SUPPORTED
-      case PNG_READ_zTXt_MODE:
-      {
-         png_push_read_zTXt(png_ptr, info_ptr);
-         break;
-      }
-
-#endif
-#ifdef PNG_READ_iTXt_SUPPORTED
-      case PNG_READ_iTXt_MODE:
-      {
-         png_push_read_iTXt(png_ptr, info_ptr);
-         break;
-      }
-
-#endif
       case PNG_SKIP_MODE:
       {
          png_push_crc_finish(png_ptr);
@@ -176,7 +152,7 @@ void /* PRIVATE */
 png_push_read_sig(png_structp png_ptr, png_infop info_ptr)
 {
    png_size_t num_checked = png_ptr->sig_bytes,
-             num_to_check = 8 - num_checked;
+       num_to_check = 8 - num_checked;
 
    if (png_ptr->buffer_size < num_to_check)
    {
@@ -196,6 +172,7 @@ png_push_read_sig(png_structp png_ptr, png_infop info_ptr)
       else
          png_error(png_ptr, "PNG file corrupted by ASCII conversion");
    }
+
    else
    {
       if (png_ptr->sig_bytes >= 8)
@@ -239,8 +216,16 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
    chunk_name = png_ptr->chunk_name;
 
    if (chunk_name == png_IDAT)
+   {
+      /* This is here above the if/else case statement below because if the
+       * unknown handling marks 'IDAT' as unknown then the IDAT handling case is
+       * completely skipped.
+       *
+       * TODO: there must be a better way of doing this.
+       */
       if (png_ptr->mode & PNG_AFTER_IDAT)
          png_ptr->mode |= PNG_HAVE_CHUNK_AFTER_IDAT;
+   }
 
    if (chunk_name == png_IHDR)
    {
@@ -297,8 +282,8 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
             png_error(png_ptr, "Missing PLTE before IDAT");
       }
    }
-
 #endif
+
    else if (chunk_name == png_PLTE)
    {
       if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@@ -535,7 +520,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
          return;
       }
 
-      png_push_handle_tEXt(png_ptr, info_ptr, png_ptr->push_length);
+      png_handle_tEXt(png_ptr, info_ptr, png_ptr->push_length);
    }
 
 #endif
@@ -548,7 +533,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
          return;
       }
 
-      png_push_handle_zTXt(png_ptr, info_ptr, png_ptr->push_length);
+      png_handle_zTXt(png_ptr, info_ptr, png_ptr->push_length);
    }
 
 #endif
@@ -561,10 +546,11 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
          return;
       }
 
-      png_push_handle_iTXt(png_ptr, info_ptr, png_ptr->push_length);
+      png_handle_iTXt(png_ptr, info_ptr, png_ptr->push_length);
    }
 
 #endif
+
    else
    {
       if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@@ -572,7 +558,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
          png_push_save_buffer(png_ptr);
          return;
       }
-      png_push_handle_unknown(png_ptr, info_ptr, png_ptr->push_length);
+      png_handle_unknown(png_ptr, info_ptr, png_ptr->push_length);
    }
 
    png_ptr->mode &= ~PNG_HAVE_CHUNK_HEADER;
@@ -612,6 +598,7 @@ png_push_crc_finish(png_structp png_ptr)
       png_ptr->save_buffer_size -= save_size;
       png_ptr->save_buffer_ptr += save_size;
    }
+
    if (png_ptr->skip_length && png_ptr->current_buffer_size)
    {
       png_size_t save_size = png_ptr->current_buffer_size;
@@ -633,6 +620,7 @@ png_push_crc_finish(png_structp png_ptr)
       png_ptr->current_buffer_size -= save_size;
       png_ptr->current_buffer_ptr += save_size;
    }
+
    if (!png_ptr->skip_length)
    {
       if (png_ptr->buffer_size < 4)
@@ -655,6 +643,7 @@ png_push_fill_buffer(png_structp png_ptr, png_bytep buffer, png_size_t length)
       return;
 
    ptr = buffer;
+
    if (png_ptr->save_buffer_size)
    {
       png_size_t save_size;
@@ -672,6 +661,7 @@ png_push_fill_buffer(png_structp png_ptr, png_bytep buffer, png_size_t length)
       png_ptr->save_buffer_size -= save_size;
       png_ptr->save_buffer_ptr += save_size;
    }
+
    if (length && png_ptr->current_buffer_size)
    {
       png_size_t save_size;
@@ -701,6 +691,7 @@ png_push_save_buffer(png_structp png_ptr)
          png_bytep dp;
 
          istop = png_ptr->save_buffer_size;
+
          for (i = 0, sp = png_ptr->save_buffer_ptr, dp = png_ptr->save_buffer;
              i < istop; i++, sp++, dp++)
          {
@@ -708,6 +699,7 @@ png_push_save_buffer(png_structp png_ptr)
          }
       }
    }
+
    if (png_ptr->save_buffer_size + png_ptr->current_buffer_size >
        png_ptr->save_buffer_max)
    {
@@ -722,8 +714,7 @@ png_push_save_buffer(png_structp png_ptr)
 
       new_max = png_ptr->save_buffer_size + png_ptr->current_buffer_size + 256;
       old_buffer = png_ptr->save_buffer;
-      png_ptr->save_buffer = (png_bytep)png_malloc_warn(png_ptr,
-          (png_size_t)new_max);
+      png_ptr->save_buffer = (png_bytep)png_malloc_warn(png_ptr, new_max);
 
       if (png_ptr->save_buffer == NULL)
       {
@@ -735,6 +726,7 @@ png_push_save_buffer(png_structp png_ptr)
       png_free(png_ptr, old_buffer);
       png_ptr->save_buffer_max = new_max;
    }
+
    if (png_ptr->current_buffer_size)
    {
       png_memcpy(png_ptr->save_buffer + png_ptr->save_buffer_size,
@@ -742,6 +734,7 @@ png_push_save_buffer(png_structp png_ptr)
       png_ptr->save_buffer_size += png_ptr->current_buffer_size;
       png_ptr->current_buffer_size = 0;
    }
+
    png_ptr->save_buffer_ptr = png_ptr->save_buffer;
    png_ptr->buffer_size = 0;
 }
@@ -843,6 +836,7 @@ png_push_read_IDAT(png_structp png_ptr)
       png_ptr->current_buffer_size -= save_size;
       png_ptr->current_buffer_ptr += save_size;
    }
+
    if (!png_ptr->idat_size)
    {
       if (png_ptr->buffer_size < 4)
@@ -977,7 +971,7 @@ png_push_process_row(png_structp png_ptr)
    if (png_ptr->row_buf[0] > PNG_FILTER_VALUE_NONE)
    {
       if (png_ptr->row_buf[0] < PNG_FILTER_VALUE_LAST)
-         png_read_filter_row(&row_info, png_ptr->row_buf + 1,
+         png_read_filter_row(png_ptr, &row_info, png_ptr->row_buf + 1,
             png_ptr->prev_row + 1, png_ptr->row_buf[0]);
       else
          png_error(png_ptr, "bad adaptive filter value");
@@ -1193,6 +1187,7 @@ png_push_process_row(png_structp png_ptr)
 void /* PRIVATE */
 png_read_push_finish_row(png_structp png_ptr)
 {
+#ifdef PNG_READ_INTERLACING_SUPPORTED
    /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
 
    /* Start of interlace block */
@@ -1211,6 +1206,7 @@ png_read_push_finish_row(png_structp png_ptr)
     * it, uncomment it here and in png.h
    static PNG_CONST png_byte 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)
@@ -1254,525 +1250,6 @@ png_read_push_finish_row(png_structp png_ptr)
 #endif /* PNG_READ_INTERLACING_SUPPORTED */
 }
 
-#ifdef PNG_READ_tEXt_SUPPORTED
-void /* PRIVATE */
-png_push_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32
-    length)
-{
-   if (!(png_ptr->mode & PNG_HAVE_IHDR) || (png_ptr->mode & PNG_HAVE_IEND))
-      {
-         PNG_UNUSED(info_ptr) /* To quiet some compiler warnings */
-         png_error(png_ptr, "Out of place tEXt");
-         /* NOT REACHED */
-      }
-
-#ifdef PNG_MAX_MALLOC_64K
-   png_ptr->skip_length = 0;  /* This may not be necessary */
-
-   if (length > (png_uint_32)65535L) /* Can't hold entire string in memory */
-   {
-      png_warning(png_ptr, "tEXt chunk too large to fit in memory");
-      png_ptr->skip_length = length - (png_uint_32)65535L;
-      length = (png_uint_32)65535L;
-   }
-#endif
-
-   png_ptr->current_text = (png_charp)png_malloc(png_ptr,
-       (png_size_t)(length + 1));
-   png_ptr->current_text[length] = '\0';
-   png_ptr->current_text_ptr = png_ptr->current_text;
-   png_ptr->current_text_size = (png_size_t)length;
-   png_ptr->current_text_left = (png_size_t)length;
-   png_ptr->process_mode = PNG_READ_tEXt_MODE;
-}
-
-void /* PRIVATE */
-png_push_read_tEXt(png_structp png_ptr, png_infop info_ptr)
-{
-   if (png_ptr->buffer_size && png_ptr->current_text_left)
-   {
-      png_size_t text_size;
-
-      if (png_ptr->buffer_size < png_ptr->current_text_left)
-         text_size = png_ptr->buffer_size;
-
-      else
-         text_size = png_ptr->current_text_left;
-
-      png_crc_read(png_ptr, (png_bytep)png_ptr->current_text_ptr, text_size);
-      png_ptr->current_text_left -= text_size;
-      png_ptr->current_text_ptr += text_size;
-   }
-   if (!(png_ptr->current_text_left))
-   {
-      png_textp text_ptr;
-      png_charp text;
-      png_charp key;
-      int ret;
-
-      if (png_ptr->buffer_size < 4)
-      {
-         png_push_save_buffer(png_ptr);
-         return;
-      }
-
-      png_push_crc_finish(png_ptr);
-
-#ifdef PNG_MAX_MALLOC_64K
-      if (png_ptr->skip_length)
-         return;
-#endif
-
-      key = png_ptr->current_text;
-
-      for (text = key; *text; text++)
-         /* Empty loop */ ;
-
-      if (text < key + png_ptr->current_text_size)
-         text++;
-
-      text_ptr = (png_textp)png_malloc(png_ptr, png_sizeof(png_text));
-      text_ptr->compression = PNG_TEXT_COMPRESSION_NONE;
-      text_ptr->key = key;
-      text_ptr->itxt_length = 0;
-      text_ptr->lang = NULL;
-      text_ptr->lang_key = NULL;
-      text_ptr->text = text;
-
-      ret = png_set_text_2(png_ptr, info_ptr, text_ptr, 1);
-
-      png_free(png_ptr, key);
-      png_free(png_ptr, text_ptr);
-      png_ptr->current_text = NULL;
-
-      if (ret)
-         png_warning(png_ptr, "Insufficient memory to store text chunk");
-   }
-}
-#endif
-
-#ifdef PNG_READ_zTXt_SUPPORTED
-void /* PRIVATE */
-png_push_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32
-   length)
-{
-   if (!(png_ptr->mode & PNG_HAVE_IHDR) || (png_ptr->mode & PNG_HAVE_IEND))
-   {
-      PNG_UNUSED(info_ptr) /* To quiet some compiler warnings */
-      png_error(png_ptr, "Out of place zTXt");
-      /* NOT REACHED */
-   }
-
-#ifdef PNG_MAX_MALLOC_64K
-   /* We can't handle zTXt chunks > 64K, since we don't have enough space
-    * to be able to store the uncompressed data.  Actually, the threshold
-    * is probably around 32K, but it isn't as definite as 64K is.
-    */
-   if (length > (png_uint_32)65535L)
-   {
-      png_warning(png_ptr, "zTXt chunk too large to fit in memory");
-      png_push_crc_skip(png_ptr, length);
-      return;
-   }
-#endif
-
-   png_ptr->current_text = (png_charp)png_malloc(png_ptr,
-       (png_size_t)(length + 1));
-   png_ptr->current_text[length] = '\0';
-   png_ptr->current_text_ptr = png_ptr->current_text;
-   png_ptr->current_text_size = (png_size_t)length;
-   png_ptr->current_text_left = (png_size_t)length;
-   png_ptr->process_mode = PNG_READ_zTXt_MODE;
-}
-
-void /* PRIVATE */
-png_push_read_zTXt(png_structp png_ptr, png_infop info_ptr)
-{
-   if (png_ptr->buffer_size && png_ptr->current_text_left)
-   {
-      png_size_t text_size;
-
-      if (png_ptr->buffer_size < (png_uint_32)png_ptr->current_text_left)
-         text_size = png_ptr->buffer_size;
-
-      else
-         text_size = png_ptr->current_text_left;
-
-      png_crc_read(png_ptr, (png_bytep)png_ptr->current_text_ptr, text_size);
-      png_ptr->current_text_left -= text_size;
-      png_ptr->current_text_ptr += text_size;
-   }
-   if (!(png_ptr->current_text_left))
-   {
-      png_textp text_ptr;
-      png_charp text;
-      png_charp key;
-      int ret;
-      png_size_t text_size, key_size;
-
-      if (png_ptr->buffer_size < 4)
-      {
-         png_push_save_buffer(png_ptr);
-         return;
-      }
-
-      png_push_crc_finish(png_ptr);
-
-      key = png_ptr->current_text;
-
-      for (text = key; *text; text++)
-         /* Empty loop */ ;
-
-      /* zTXt can't have zero text */
-      if (text >= key + png_ptr->current_text_size)
-      {
-         png_ptr->current_text = NULL;
-         png_free(png_ptr, key);
-         return;
-      }
-
-      text++;
-
-      if (*text != PNG_TEXT_COMPRESSION_zTXt) /* Check compression byte */
-      {
-         png_ptr->current_text = NULL;
-         png_free(png_ptr, key);
-         return;
-      }
-
-      text++;
-
-      png_ptr->zstream.next_in = (png_bytep)text;
-      png_ptr->zstream.avail_in = (uInt)(png_ptr->current_text_size -
-          (text - key));
-      png_ptr->zstream.next_out = png_ptr->zbuf;
-      png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
-
-      key_size = text - key;
-      text_size = 0;
-      text = NULL;
-      ret = Z_STREAM_END;
-
-      while (png_ptr->zstream.avail_in)
-      {
-         ret = inflate(&png_ptr->zstream, Z_PARTIAL_FLUSH);
-         if (ret != Z_OK && ret != Z_STREAM_END)
-         {
-            inflateReset(&png_ptr->zstream);
-            png_ptr->zstream.avail_in = 0;
-            png_ptr->current_text = NULL;
-            png_free(png_ptr, key);
-            png_free(png_ptr, text);
-            return;
-         }
-
-         if (!(png_ptr->zstream.avail_out) || ret == Z_STREAM_END)
-         {
-            if (text == NULL)
-            {
-               text = (png_charp)png_malloc(png_ptr,
-                   (png_ptr->zbuf_size
-                   - png_ptr->zstream.avail_out + key_size + 1));
-
-               png_memcpy(text + key_size, png_ptr->zbuf,
-                   png_ptr->zbuf_size - png_ptr->zstream.avail_out);
-
-               png_memcpy(text, key, key_size);
-
-               text_size = key_size + png_ptr->zbuf_size -
-                   png_ptr->zstream.avail_out;
-
-               *(text + text_size) = '\0';
-            }
-
-            else
-            {
-               png_charp tmp;
-
-               tmp = text;
-               text = (png_charp)png_malloc(png_ptr, text_size +
-                   (png_ptr->zbuf_size
-                   - png_ptr->zstream.avail_out + 1));
-
-               png_memcpy(text, tmp, text_size);
-               png_free(png_ptr, tmp);
-
-               png_memcpy(text + text_size, png_ptr->zbuf,
-                   png_ptr->zbuf_size - png_ptr->zstream.avail_out);
-
-               text_size += png_ptr->zbuf_size - png_ptr->zstream.avail_out;
-               *(text + text_size) = '\0';
-            }
-
-            if (ret != Z_STREAM_END)
-            {
-               png_ptr->zstream.next_out = png_ptr->zbuf;
-               png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
-            }
-         }
-         else
-         {
-            break;
-         }
-
-         if (ret == Z_STREAM_END)
-            break;
-      }
-
-      inflateReset(&png_ptr->zstream);
-      png_ptr->zstream.avail_in = 0;
-
-      if (ret != Z_STREAM_END)
-      {
-         png_ptr->current_text = NULL;
-         png_free(png_ptr, key);
-         png_free(png_ptr, text);
-         return;
-      }
-
-      png_ptr->current_text = NULL;
-      png_free(png_ptr, key);
-      key = text;
-      text += key_size;
-
-      text_ptr = (png_textp)png_malloc(png_ptr,
-          png_sizeof(png_text));
-      text_ptr->compression = PNG_TEXT_COMPRESSION_zTXt;
-      text_ptr->key = key;
-      text_ptr->itxt_length = 0;
-      text_ptr->lang = NULL;
-      text_ptr->lang_key = NULL;
-      text_ptr->text = text;
-
-      ret = png_set_text_2(png_ptr, info_ptr, text_ptr, 1);
-
-      png_free(png_ptr, key);
-      png_free(png_ptr, text_ptr);
-
-      if (ret)
-         png_warning(png_ptr, "Insufficient memory to store text chunk");
-   }
-}
-#endif
-
-#ifdef PNG_READ_iTXt_SUPPORTED
-void /* PRIVATE */
-png_push_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32
-    length)
-{
-   if (!(png_ptr->mode & PNG_HAVE_IHDR) || (png_ptr->mode & PNG_HAVE_IEND))
-   {
-      PNG_UNUSED(info_ptr) /* To quiet some compiler warnings */
-      png_error(png_ptr, "Out of place iTXt");
-      /* NOT REACHED */
-   }
-
-#ifdef PNG_MAX_MALLOC_64K
-   png_ptr->skip_length = 0;  /* This may not be necessary */
-
-   if (length > (png_uint_32)65535L) /* Can't hold entire string in memory */
-   {
-      png_warning(png_ptr, "iTXt chunk too large to fit in memory");
-      png_ptr->skip_length = length - (png_uint_32)65535L;
-      length = (png_uint_32)65535L;
-   }
-#endif
-
-   png_ptr->current_text = (png_charp)png_malloc(png_ptr,
-       (png_size_t)(length + 1));
-   png_ptr->current_text[length] = '\0';
-   png_ptr->current_text_ptr = png_ptr->current_text;
-   png_ptr->current_text_size = (png_size_t)length;
-   png_ptr->current_text_left = (png_size_t)length;
-   png_ptr->process_mode = PNG_READ_iTXt_MODE;
-}
-
-void /* PRIVATE */
-png_push_read_iTXt(png_structp png_ptr, png_infop info_ptr)
-{
-
-   if (png_ptr->buffer_size && png_ptr->current_text_left)
-   {
-      png_size_t text_size;
-
-      if (png_ptr->buffer_size < png_ptr->current_text_left)
-         text_size = png_ptr->buffer_size;
-
-      else
-         text_size = png_ptr->current_text_left;
-
-      png_crc_read(png_ptr, (png_bytep)png_ptr->current_text_ptr, text_size);
-      png_ptr->current_text_left -= text_size;
-      png_ptr->current_text_ptr += text_size;
-   }
-
-   if (!(png_ptr->current_text_left))
-   {
-      png_textp text_ptr;
-      png_charp key;
-      int comp_flag;
-      png_charp lang;
-      png_charp lang_key;
-      png_charp text;
-      int ret;
-
-      if (png_ptr->buffer_size < 4)
-      {
-         png_push_save_buffer(png_ptr);
-         return;
-      }
-
-      png_push_crc_finish(png_ptr);
-
-#ifdef PNG_MAX_MALLOC_64K
-      if (png_ptr->skip_length)
-         return;
-#endif
-
-      key = png_ptr->current_text;
-
-      for (lang = key; *lang; lang++)
-         /* Empty loop */ ;
-
-      if (lang < key + png_ptr->current_text_size - 3)
-         lang++;
-
-      comp_flag = *lang++;
-      lang++;     /* Skip comp_type, always zero */
-
-      for (lang_key = lang; *lang_key; lang_key++)
-         /* Empty loop */ ;
-
-      lang_key++;        /* Skip NUL separator */
-
-      text=lang_key;
-
-      if (lang_key < key + png_ptr->current_text_size - 1)
-      {
-         for (; *text; text++)
-            /* Empty loop */ ;
-      }
-
-      if (text < key + png_ptr->current_text_size)
-         text++;
-
-      text_ptr = (png_textp)png_malloc(png_ptr,
-          png_sizeof(png_text));
-
-      text_ptr->compression = comp_flag + 2;
-      text_ptr->key = key;
-      text_ptr->lang = lang;
-      text_ptr->lang_key = lang_key;
-      text_ptr->text = text;
-      text_ptr->text_length = 0;
-      text_ptr->itxt_length = png_strlen(text);
-
-      ret = png_set_text_2(png_ptr, info_ptr, text_ptr, 1);
-
-      png_ptr->current_text = NULL;
-
-      png_free(png_ptr, text_ptr);
-      if (ret)
-         png_warning(png_ptr, "Insufficient memory to store iTXt chunk");
-   }
-}
-#endif
-
-/* This function is called when we haven't found a handler for this
- * chunk.  If there isn't a problem with the chunk itself (ie a bad chunk
- * name or a critical chunk), the chunk is (currently) silently ignored.
- */
-void /* PRIVATE */
-png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32
-    length)
-{
-   png_uint_32 skip = 0;
-   png_uint_32 chunk_name = png_ptr->chunk_name;
-
-   if (PNG_CHUNK_CRITICAL(chunk_name))
-   {
-#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
-      if (png_chunk_unknown_handling(png_ptr, chunk_name) !=
-          PNG_HANDLE_CHUNK_ALWAYS
-#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
-          && png_ptr->read_user_chunk_fn == NULL
-#endif
-          )
-#endif
-         png_chunk_error(png_ptr, "unknown critical chunk");
-
-      PNG_UNUSED(info_ptr) /* To quiet some compiler warnings */
-   }
-
-#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
-   /* TODO: the code below is apparently just using the
-    * png_struct::unknown_chunk member as a temporarily variable, it should be
-    * possible to eliminate both it and the temporary buffer.
-    */
-   if (png_ptr->flags & PNG_FLAG_KEEP_UNKNOWN_CHUNKS)
-   {
-#ifdef PNG_MAX_MALLOC_64K
-      if (length > 65535)
-      {
-         png_warning(png_ptr, "unknown chunk too large to fit in memory");
-         skip = length - 65535;
-         length = 65535;
-      }
-#endif
-      /* This is just a record for the user; libpng doesn't use the character
-       * form of the name.
-       */
-      PNG_CSTRING_FROM_CHUNK(png_ptr->unknown_chunk.name, png_ptr->chunk_name);
-
-      /* The following cast should be safe because of the check above. */
-      png_ptr->unknown_chunk.size = (png_size_t)length;
-
-      if (length == 0)
-         png_ptr->unknown_chunk.data = NULL;
-
-      else
-      {
-         png_ptr->unknown_chunk.data = (png_bytep)png_malloc(png_ptr,
-            png_ptr->unknown_chunk.size);
-         png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data,
-            png_ptr->unknown_chunk.size);
-      }
-
-#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
-      if (png_ptr->read_user_chunk_fn != NULL)
-      {
-         /* Callback to user unknown chunk handler */
-         int ret;
-         ret = (*(png_ptr->read_user_chunk_fn))
-             (png_ptr, &png_ptr->unknown_chunk);
-
-         if (ret < 0)
-            png_chunk_error(png_ptr, "error in user chunk");
-
-         if (ret == 0)
-         {
-            if (PNG_CHUNK_CRITICAL(png_ptr->chunk_name))
-               if (png_chunk_unknown_handling(png_ptr, chunk_name) !=
-                   PNG_HANDLE_CHUNK_ALWAYS)
-                  png_chunk_error(png_ptr, "unknown critical chunk");
-            png_set_unknown_chunks(png_ptr, info_ptr,
-                &png_ptr->unknown_chunk, 1);
-         }
-      }
-
-      else
-#endif
-         png_set_unknown_chunks(png_ptr, info_ptr, &png_ptr->unknown_chunk, 1);
-      png_free(png_ptr, png_ptr->unknown_chunk.data);
-      png_ptr->unknown_chunk.data = NULL;
-   }
-
-   else
-#endif
-      skip=length;
-   png_push_crc_skip(png_ptr, skip);
-}
-
 void /* PRIVATE */
 png_push_have_info(png_structp png_ptr, png_infop info_ptr)
 {
@@ -1795,19 +1272,22 @@ png_push_have_row(png_structp png_ptr, png_bytep row)
          (int)png_ptr->pass);
 }
 
+#ifdef PNG_READ_INTERLACING_SUPPORTED
 void PNGAPI
 png_progressive_combine_row (png_structp png_ptr, png_bytep old_row,
     png_const_bytep new_row)
 {
-   static PNG_CONST png_byte FARDATA png_pass_dsp_mask[7] =
-      {0xff, 0x0f, 0xff, 0x33, 0xff, 0x55, 0xff};
-
    if (png_ptr == NULL)
       return;
 
-   if (new_row != NULL)    /* new_row must == png_ptr->row_buf here. */
-      png_combine_row(png_ptr, old_row, png_pass_dsp_mask[png_ptr->pass]);
+   /* new_row is a flag here - if it is NULL then the app callback was called
+    * from an empty row (see the calls to png_struct::row_fn below), otherwise
+    * it must be png_ptr->row_buf+1
+    */
+   if (new_row != NULL)
+      png_combine_row(png_ptr, old_row, 1/*display*/);
 }
+#endif /* PNG_READ_INTERLACING_SUPPORTED */
 
 void PNGAPI
 png_set_progressive_read_fn(png_structp png_ptr, png_voidp progressive_ptr,

pngpriv.h

@@ -2,11 +2,11 @@
 /* pngpriv.h - private declarations for use inside libpng
  *
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2012 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.)
  *
- * Last changed in libpng 1.5.6 [(PENDING RELEASE)]
+ * Last changed in libpng 1.5.10 [March 29, 2012]
  *
  * This code is released under the libpng license.
  * For conditions of distribution and use, see the disclaimer
@@ -44,6 +44,9 @@
  */
 #include <stdlib.h>
 
+/* This is used to find 'offsetof', used below for alignment tests. */
+#include <stddef.h>
+
 #define PNGLIB_BUILD /*libpng is being built, not used*/
 
 #ifdef PNG_USER_CONFIG
@@ -130,6 +133,46 @@
 #  define PNG_DLL_EXPORT
 #endif
 
+/* SECURITY and SAFETY:
+ *
+ * By default libpng is built without any internal limits on image size,
+ * individual heap (png_malloc) allocations or the total amount of memory used.
+ * If PNG_SAFE_LIMITS_SUPPORTED is defined, however, the limits below are used
+ * (unless individually overridden).  These limits are believed to be fairly
+ * safe, but builders of secure systems should verify the values against the
+ * real system capabilities.
+ */
+
+#ifdef PNG_SAFE_LIMITS_SUPPORTED
+   /* 'safe' limits */
+#  ifndef PNG_USER_WIDTH_MAX
+#     define PNG_USER_WIDTH_MAX 1000000
+#  endif
+#  ifndef PNG_USER_HEIGHT_MAX
+#     define PNG_USER_HEIGHT_MAX 1000000
+#  endif
+#  ifndef PNG_USER_CHUNK_CACHE_MAX
+#     define PNG_USER_CHUNK_CACHE_MAX 128
+#  endif
+#  ifndef PNG_USER_CHUNK_MALLOC_MAX
+#     define PNG_USER_CHUNK_MALLOC_MAX 8000000
+#  endif
+#else
+   /* values for no limits */
+#  ifndef PNG_USER_WIDTH_MAX
+#     define PNG_USER_WIDTH_MAX 0x7fffffff
+#  endif
+#  ifndef PNG_USER_HEIGHT_MAX
+#     define PNG_USER_HEIGHT_MAX 0x7fffffff
+#  endif
+#  ifndef PNG_USER_CHUNK_CACHE_MAX
+#     define PNG_USER_CHUNK_CACHE_MAX 0
+#  endif
+#  ifndef PNG_USER_CHUNK_MALLOC_MAX
+#     define PNG_USER_CHUNK_MALLOC_MAX 0
+#  endif
+#endif
+
 /* This is used for 16 bit gamma tables - only the top level pointers are const,
  * this could be changed:
  */
@@ -193,6 +236,23 @@ typedef PNG_CONST png_uint_16p FAR * png_const_uint_16pp;
 #   define PNG_STATIC static
 #endif
 
+/* C99 restrict is used where possible, to do this 'restrict' is defined as
+ * empty if we can't be sure it is supported.  configure builds have already
+ * done this work.
+ */
+#ifdef PNG_CONFIGURE_LIBPNG
+#  define PNG_RESTRICT restrict
+#else
+   /* Modern compilers support restrict, but assume not for anything not
+    * recognized here:
+    */
+#  if defined __GNUC__ || defined _MSC_VER || defined __WATCOMC__
+#     define PNG_RESTRICT restrict
+#  else
+#     define PNG_RESTRICT
+#  endif
+#endif
+
 /* If warnings or errors are turned off the code is disabled or redirected here.
  * From 1.5.4 functions have been added to allow very limited formatting of
  * error and warning messages - this code will also be disabled here.
@@ -214,15 +274,28 @@ typedef PNG_CONST png_uint_16p FAR * png_const_uint_16pp;
 #  define png_fixed_error(s1,s2) png_err(s1)
 #endif
 
+/* C allows up-casts from (void*) to any pointer and (const void*) to any
+ * pointer to a const object.  C++ regards this as a type error and requires an
+ * explicit, static, cast and provides the static_cast<> rune to ensure that
+ * const is not cast away.
+ */
+#ifdef __cplusplus
+#  define png_voidcast(type, value) static_cast<type>(value)
+#else
+#  define png_voidcast(type, value) (value)
+#endif /* __cplusplus */
+
 #ifndef PNG_EXTERN
 /* The functions exported by PNG_EXTERN are internal functions, which
  * aren't usually used outside the library (as far as I know), so it is
  * debatable if they should be exported at all.  In the future, when it
  * is possible to have run-time registry of chunk-handling functions,
  * some of these might be made available again.
-#  define PNG_EXTERN extern
+ *
+ * 1.5.7: turned the use of 'extern' back on, since it is localized to pngpriv.h
+ * it should be safe now (it is unclear why it was turned off.)
  */
-#  define PNG_EXTERN
+#  define PNG_EXTERN extern
 #endif
 
 /* Some fixed point APIs are still required even if not exported because
@@ -321,6 +394,52 @@ typedef PNG_CONST png_uint_16p FAR * png_const_uint_16pp;
 #    define png_memset  memset
 #  endif
 #endif
+
+/* These macros may need to be architecture dependent. */
+#define PNG_ALIGN_NONE   0 /* do not use data alignment */
+#define PNG_ALIGN_ALWAYS 1 /* assume unaligned accesses are OK */
+#ifdef offsetof
+#  define PNG_ALIGN_OFFSET 2 /* use offsetof to determine alignment */
+#else
+#  define PNG_ALIGN_OFFSET -1 /* prevent the use of this */
+#endif
+#define PNG_ALIGN_SIZE   3 /* use sizeof to determine alignment */
+
+#ifndef PNG_ALIGN_TYPE
+   /* Default to using aligned access optimizations and requiring alignment to a
+    * multiple of the data type size.  Override in a compiler specific fashion
+    * if necessary by inserting tests here:
+    */
+#  define PNG_ALIGN_TYPE PNG_ALIGN_SIZE
+#endif
+
+#if PNG_ALIGN_TYPE == PNG_ALIGN_SIZE
+   /* This is used because in some compiler implementations non-aligned
+    * structure members are supported, so the offsetof approach below fails.
+    * Set PNG_ALIGN_SIZE=0 for compiler combinations where unaligned access
+    * is good for performance.  Do not do this unless you have tested the result
+    * and understand it.
+    */
+#  define png_alignof(type) (sizeof (type))
+#else
+#  if PNG_ALIGN_TYPE == PNG_ALIGN_OFFSET
+#     define png_alignof(type) offsetof(struct{char c; type t;}, t)
+#  else
+#     if PNG_ALIGN_TYPE == PNG_ALIGN_ALWAYS
+#        define png_alignof(type) (1)
+#     endif
+      /* Else leave png_alignof undefined to prevent use thereof */
+#  endif
+#endif
+
+/* This implicitly assumes alignment is always to a power of 2. */
+#ifdef png_alignof
+#  define png_isaligned(ptr, type)\
+   ((((const char*)ptr-(const char*)0) & (png_alignof(type)-1)) == 0)
+#else
+#  define png_isaligned(ptr, type) 0
+#endif
+
 /* End of memory model/platform independent support */
 /* End of 1.5.0beta36 move from pngconf.h */
 
@@ -347,6 +466,7 @@ typedef PNG_CONST png_uint_16p FAR * png_const_uint_16pp;
 #define PNG_BACKGROUND_IS_GRAY     0x800
 #define PNG_HAVE_PNG_SIGNATURE    0x1000
 #define PNG_HAVE_CHUNK_AFTER_IDAT 0x2000 /* Have another chunk after IDAT */
+#define PNG_HAVE_iCCP             0x4000
 
 /* Flags for the transformations the PNG library does on the image data */
 #define PNG_BGR                 0x0001
@@ -703,10 +823,8 @@ PNG_EXTERN void png_write_IEND PNGARG((png_structp png_ptr));
 #  ifdef PNG_FLOATING_POINT_SUPPORTED
 PNG_EXTERN void png_write_gAMA PNGARG((png_structp png_ptr, double file_gamma));
 #  endif
-#  ifdef PNG_FIXED_POINT_SUPPORTED
 PNG_EXTERN void png_write_gAMA_fixed PNGARG((png_structp png_ptr,
     png_fixed_point file_gamma));
-#  endif
 #endif
 
 #ifdef PNG_WRITE_sBIT_SUPPORTED
@@ -823,17 +941,41 @@ PNG_EXTERN void png_write_finish_row PNGARG((png_structp png_ptr));
 PNG_EXTERN void png_write_start_row PNGARG((png_structp png_ptr));
 
 /* Combine a row of data, dealing with alpha, etc. if requested.  'row' is an
- * array of png_ptr->width pixels, 'mask' is a mask of the pixels to copy from
- * png_ptr->row_buf+1.  'mask' describes each block of 8 pixels - only the low 8
- * bits are used.  This function is only ever used to write to row buffers
- * provided by the caller of the relevant libpng API and the row must have
- * already been transformed by the read transformations.
+ * array of png_ptr->width pixels.  If the image is not interlaced or this
+ * is the final pass this just does a png_memcpy, otherwise the "display" flag
+ * is used to determine whether to copy pixels that are not in the current pass.
+ *
+ * Because 'png_do_read_interlace' (below) replicates pixels this allows this
+ * function to achieve the documented 'blocky' appearance during interlaced read
+ * if display is 1 and the 'sparkle' appearance, where existing pixels in 'row'
+ * are not changed if they are not in the current pass, when display is 0.
+ *
+ * 'display' must be 0 or 1, otherwise the memcpy will be done regardless.
+ *
+ * The API always reads from the png_struct row buffer and always assumes that
+ * it is full width (png_do_read_interlace has already been called.)
+ *
+ * This function is only ever used to write to row buffers provided by the
+ * caller of the relevant libpng API and the row must have already been
+ * transformed by the read transformations.
+ *
+ * The PNG_USE_COMPILE_TIME_MASKS option causes generation of pre-computed
+ * bitmasks for use within the code, otherwise runtime generated masks are used.
+ * The default is compile time masks.
  */
+#ifndef PNG_USE_COMPILE_TIME_MASKS
+#  define PNG_USE_COMPILE_TIME_MASKS 1
+#endif
 PNG_EXTERN void png_combine_row PNGARG((png_structp png_ptr, png_bytep row,
-    int mask));
+    int display));
 
 #ifdef PNG_READ_INTERLACING_SUPPORTED
-/* Expand an interlaced row */
+/* Expand an interlaced row: the 'row_info' describes the pass data that has
+ * been read in and must correspond to the pixels in 'row', the pixels are
+ * expanded (moved apart) in 'row' to match the final layout, when doing this
+ * the pixels are *replicated* to the intervening space.  This is essential for
+ * the correct operation of png_combine_row, above.
+ */
 PNG_EXTERN void png_do_read_interlace PNGARG((png_row_infop row_info,
     png_bytep row, int pass, png_uint_32 transformations));
 #endif
@@ -849,8 +991,23 @@ PNG_EXTERN void png_do_write_interlace PNGARG((png_row_infop row_info,
 /* Unfilter a row: check the filter value before calling this, there is no point
  * calling it for PNG_FILTER_VALUE_NONE.
  */
-PNG_EXTERN void png_read_filter_row PNGARG((png_row_infop row_info,
-    png_bytep row, png_const_bytep prev_row, int filter));
+PNG_EXTERN void png_read_filter_row PNGARG((png_structp pp, png_row_infop
+    row_info, png_bytep row, png_const_bytep prev_row, int filter));
+
+PNG_EXTERN void png_read_filter_row_up_neon PNGARG((png_row_infop row_info,
+    png_bytep row, png_const_bytep prev_row));
+PNG_EXTERN void png_read_filter_row_sub3_neon PNGARG((png_row_infop row_info,
+    png_bytep row, png_const_bytep prev_row));
+PNG_EXTERN void png_read_filter_row_sub4_neon PNGARG((png_row_infop row_info,
+    png_bytep row, png_const_bytep prev_row));
+PNG_EXTERN void png_read_filter_row_avg3_neon PNGARG((png_row_infop row_info,
+    png_bytep row, png_const_bytep prev_row));
+PNG_EXTERN void png_read_filter_row_avg4_neon PNGARG((png_row_infop row_info,
+    png_bytep row, png_const_bytep prev_row));
+PNG_EXTERN void png_read_filter_row_paeth3_neon PNGARG((png_row_infop row_info,
+    png_bytep row, png_const_bytep prev_row));
+PNG_EXTERN void png_read_filter_row_paeth4_neon PNGARG((png_row_infop row_info,
+    png_bytep row, png_const_bytep prev_row));
 
 /* Choose the best filter to use and filter the row data */
 PNG_EXTERN void png_write_find_filter PNGARG((png_structp png_ptr,
@@ -1100,10 +1257,8 @@ PNG_EXTERN void png_handle_zTXt PNGARG((png_structp png_ptr, png_infop info_ptr,
     png_uint_32 length));
 #endif
 
-#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
 PNG_EXTERN void png_handle_unknown PNGARG((png_structp png_ptr,
     png_infop info_ptr, png_uint_32 length));
-#endif
 
 PNG_EXTERN void png_check_chunk_name PNGARG((png_structp png_ptr,
     png_uint_32 chunk_name));
@@ -1237,6 +1392,13 @@ PNG_EXTERN void png_check_IHDR PNGARG((png_structp png_ptr,
     int color_type, int interlace_type, int compression_type,
     int filter_type));
 
+/* Added at libpng version 1.5.10 */
+#if defined(PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED) || \
+    defined(PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED)
+PNG_EXTERN void png_do_check_palette_indexes PNGARG((png_structp png_ptr,
+    png_row_infop row_info));
+#endif
+
 /* Free all memory used by the read (old method - NOT DLL EXPORTED) */
 PNG_EXTERN void png_read_destroy PNGARG((png_structp png_ptr,
     png_infop info_ptr, png_infop end_info_ptr));
@@ -1327,14 +1489,16 @@ PNG_EXTERN void png_formatted_warning(png_structp png_ptr,
 /* ASCII to FP interfaces, currently only implemented if sCAL
  * support is required.
  */
-#if defined(PNG_READ_sCAL_SUPPORTED)
+#ifdef PNG_sCAL_SUPPORTED
 /* MAX_DIGITS is actually the maximum number of characters in an sCAL
  * width or height, derived from the precision (number of significant
  * digits - a build time settable option) and assumpitions about the
  * maximum ridiculous exponent.
  */
 #define PNG_sCAL_MAX_DIGITS (PNG_sCAL_PRECISION+1/*.*/+1/*E*/+10/*exponent*/)
+#endif
 
+#ifdef PNG_sCAL_SUPPORTED
 #ifdef PNG_FLOATING_POINT_SUPPORTED
 PNG_EXTERN void png_ascii_from_fp PNGARG((png_structp png_ptr, png_charp ascii,
     png_size_t size, double fp, unsigned int precision));
@@ -1418,15 +1582,15 @@ PNG_EXTERN void png_ascii_from_fixed PNGARG((png_structp png_ptr,
 #define PNG_FP_IS_ZERO(state) (((state) & PNG_FP_Z_MASK) == PNG_FP_SAW_DIGIT)
 #define PNG_FP_IS_POSITIVE(state) (((state) & PNG_FP_NZ_MASK) == PNG_FP_Z_MASK)
 #define PNG_FP_IS_NEGATIVE(state) (((state) & PNG_FP_NZ_MASK) == PNG_FP_NZ_MASK)
- 
-/* The actual parser.  This can be called repeatedly, it updates
+
+/* The actual parser.  This can be called repeatedly. It updates
  * the index into the string and the state variable (which must
- * be initialzed to 0).  It returns a result code, as above.  There
+ * be initialized to 0).  It returns a result code, as above.  There
  * is no point calling the parser any more if it fails to advance to
  * the end of the string - it is stuck on an invalid character (or
  * terminated by '\0').
  *
- * Note that the pointer will consume an E or even an E+ then leave
+ * Note that the pointer will consume an E or even an E+ and then leave
  * a 'maybe' state even though a preceding integer.fraction is valid.
  * The PNG_FP_WAS_VALID flag indicates that a preceding substring was
  * a valid number.  It's possible to recover from this by calling
@@ -1465,7 +1629,7 @@ PNG_EXTERN png_fixed_point png_muldiv_warn PNGARG((png_structp png_ptr,
     png_fixed_point a, png_int_32 multiplied_by, png_int_32 divided_by));
 #endif
 
-#ifdef PNG_READ_GAMMA_SUPPORTED
+#if (defined PNG_READ_GAMMA_SUPPORTED) || (defined PNG_cHRM_SUPPORTED)
 /* Calculate a reciprocal - used for gamma values.  This returns
  * 0 if the argument is 0 in order to maintain an undefined value,
  * there are no warnings.
@@ -1495,12 +1659,77 @@ PNG_EXTERN png_uint_16 png_gamma_16bit_correct PNGARG((unsigned int value,
     png_fixed_point gamma_value));
 PNG_EXTERN png_byte png_gamma_8bit_correct PNGARG((unsigned int value,
     png_fixed_point gamma_value));
+PNG_EXTERN void png_destroy_gamma_table(png_structp png_ptr);
 PNG_EXTERN void png_build_gamma_table PNGARG((png_structp png_ptr,
     int bit_depth));
 #endif
 
-/* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */
+/* Missing declarations if FIXED_POINT is *not* supported - fixed properly
+ * in libpng 1.6
+ */
+#ifndef PNG_FIXED_POINT_SUPPORTED
+#ifdef PNG_cHRM_SUPPORTED
+PNG_EXTERN png_uint_32 png_get_cHRM_XYZ_fixed PNGARG(
+    (png_structp png_ptr, png_const_infop info_ptr,
+    png_fixed_point *int_red_X, png_fixed_point *int_red_Y,
+    png_fixed_point *int_red_Z, png_fixed_point *int_green_X,
+    png_fixed_point *int_green_Y, png_fixed_point *int_green_Z,
+    png_fixed_point *int_blue_X, png_fixed_point *int_blue_Y,
+    png_fixed_point *int_blue_Z));
+PNG_EXTERN void png_set_cHRM_XYZ_fixed PNGARG((png_structp png_ptr,
+    png_infop info_ptr, png_fixed_point int_red_X, png_fixed_point int_red_Y,
+    png_fixed_point int_red_Z, png_fixed_point int_green_X,
+    png_fixed_point int_green_Y, png_fixed_point int_green_Z,
+    png_fixed_point int_blue_X, png_fixed_point int_blue_Y,
+    png_fixed_point int_blue_Z));
+PNG_EXTERN void png_set_cHRM_fixed PNGARG((png_structp png_ptr,
+    png_infop info_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_gAMA_SUPPORTED
+PNG_EXTERN png_uint_32 png_get_gAMA_fixed PNGARG(
+    (png_const_structp png_ptr, png_const_infop info_ptr,
+    png_fixed_point *int_file_gamma));
+PNG_EXTERN void png_set_gAMA_fixed PNGARG((png_structp png_ptr,
+    png_infop info_ptr, png_fixed_point int_file_gamma));
+#endif
+
+#ifdef PNG_READ_BACKGROUND_SUPPORTED
+PNG_EXTERN void png_set_background_fixed PNGARG((png_structp png_ptr,
+    png_const_color_16p background_color, int background_gamma_code,
+    int need_expand, png_fixed_point background_gamma));
+#endif
+
+#ifdef PNG_READ_ALPHA_MODE_SUPPORTED
+PNG_EXTERN void png_set_alpha_mode_fixed PNGARG((png_structp png_ptr,
+    int mode, png_fixed_point output_gamma));
+#endif
+
+#ifdef PNG_READ_GAMMA_SUPPORTED
+PNG_EXTERN void png_set_gamma_fixed PNGARG((png_structp png_ptr,
+    png_fixed_point screen_gamma, png_fixed_point override_file_gamma));
+#endif
+
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+PNG_EXTERN void png_set_rgb_to_gray_fixed PNGARG((png_structp png_ptr,
+    int error_action, png_fixed_point red, png_fixed_point green));
+#endif
+#endif /* FIX MISSING !FIXED_POINT DECLARATIONS */
+
+#ifdef PNG_FILTER_OPTIMIZATIONS
+PNG_EXTERN void PNG_FILTER_OPTIMIZATIONS(png_structp png_ptr, unsigned int bpp);
+   /* This is the initialization function for hardware specific optimizations,
+    * one implementation (for ARM NEON machines) is contained in
+    * arm/filter_neon.c.  It need not be defined - the generic code will be used
+    * if not.
+    */
+#endif
+
+/* Maintainer: Put new private prototypes here ^ */
 
 #include "pngdebug.h"
 

pngread.c

@@ -1,8 +1,8 @@
 
 /* pngread.c - read a PNG file
  *
- * Last changed in libpng 1.5.6 [(PENDING RELEASE)]
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.14 [(PENDING RELEASE)]
+ * Copyright (c) 1998-2012 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.)
  *
@@ -67,21 +67,18 @@ png_create_read_struct_2,(png_const_charp user_png_ver, png_voidp error_ptr,
    png_ptr->user_width_max = PNG_USER_WIDTH_MAX;
    png_ptr->user_height_max = PNG_USER_HEIGHT_MAX;
 
-#  ifdef PNG_USER_CHUNK_CACHE_MAX
    /* Added at libpng-1.2.43 and 1.4.0 */
    png_ptr->user_chunk_cache_max = PNG_USER_CHUNK_CACHE_MAX;
-#  endif
 
-#  ifdef PNG_SET_USER_CHUNK_MALLOC_MAX
    /* Added at libpng-1.2.43 and 1.4.1 */
    png_ptr->user_chunk_malloc_max = PNG_USER_CHUNK_MALLOC_MAX;
-#  endif
 #endif
 
 #ifdef PNG_SETJMP_SUPPORTED
 /* Applications that neglect to set up their own setjmp() and then
-   encounter a png_error() will longjmp here.  Since the jmpbuf is
-   then meaningless we abort instead of returning. */
+ * encounter a png_error() will longjmp here.  Since the jmpbuf is
+ * then meaningless we abort instead of returning.
+ */
 #ifdef USE_FAR_KEYWORD
    if (setjmp(tmp_jmpbuf))
 #else
@@ -348,13 +345,7 @@ png_read_update_info(png_structp png_ptr, png_infop info_ptr)
    if (png_ptr == NULL)
       return;
 
-   if (!(png_ptr->flags & PNG_FLAG_ROW_INIT))
-      png_read_start_row(png_ptr);
-
-   else
-      png_warning(png_ptr,
-          "Ignoring extra png_read_update_info() call;"
-          " row buffer not reallocated");
+   png_read_start_row(png_ptr);
 
 #ifdef PNG_READ_TRANSFORMS_SUPPORTED
    png_read_transform_info(png_ptr, info_ptr);
@@ -374,15 +365,8 @@ 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);
-   else
-      png_warning(png_ptr,
-          "Ignoring extra png_start_read_image() call;"
-          " row buffer not reallocated");
+   if (png_ptr != NULL)
+     png_read_start_row(png_ptr);
 }
 #endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
 
@@ -390,11 +374,6 @@ png_start_read_image(png_structp png_ptr)
 void PNGAPI
 png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
 {
-#ifdef PNG_READ_INTERLACING_SUPPORTED
-   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;
 
    png_row_info row_info;
@@ -474,8 +453,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
             if (png_ptr->row_number & 0x07)
             {
                if (dsp_row != NULL)
-                  png_combine_row(png_ptr, dsp_row,
-                     png_pass_dsp_mask[png_ptr->pass]);
+                  png_combine_row(png_ptr, dsp_row, 1/*display*/);
                png_read_finish_row(png_ptr);
                return;
             }
@@ -485,8 +463,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
             if ((png_ptr->row_number & 0x07) || png_ptr->width < 5)
             {
                if (dsp_row != NULL)
-                  png_combine_row(png_ptr, dsp_row,
-                      png_pass_dsp_mask[png_ptr->pass]);
+                  png_combine_row(png_ptr, dsp_row, 1/*display*/);
 
                png_read_finish_row(png_ptr);
                return;
@@ -497,8 +474,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
             if ((png_ptr->row_number & 0x07) != 4)
             {
                if (dsp_row != NULL && (png_ptr->row_number & 4))
-                  png_combine_row(png_ptr, dsp_row,
-                      png_pass_dsp_mask[png_ptr->pass]);
+                  png_combine_row(png_ptr, dsp_row, 1/*display*/);
 
                png_read_finish_row(png_ptr);
                return;
@@ -509,8 +485,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
             if ((png_ptr->row_number & 3) || png_ptr->width < 3)
             {
                if (dsp_row != NULL)
-                  png_combine_row(png_ptr, dsp_row,
-                      png_pass_dsp_mask[png_ptr->pass]);
+                  png_combine_row(png_ptr, dsp_row, 1/*display*/);
 
                png_read_finish_row(png_ptr);
                return;
@@ -521,8 +496,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
             if ((png_ptr->row_number & 3) != 2)
             {
                if (dsp_row != NULL && (png_ptr->row_number & 2))
-                  png_combine_row(png_ptr, dsp_row,
-                      png_pass_dsp_mask[png_ptr->pass]);
+                  png_combine_row(png_ptr, dsp_row, 1/*display*/);
 
                png_read_finish_row(png_ptr);
                return;
@@ -532,8 +506,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
             if ((png_ptr->row_number & 1) || png_ptr->width < 2)
             {
                if (dsp_row != NULL)
-                  png_combine_row(png_ptr, dsp_row,
-                      png_pass_dsp_mask[png_ptr->pass]);
+                  png_combine_row(png_ptr, dsp_row, 1/*display*/);
 
                png_read_finish_row(png_ptr);
                return;
@@ -602,7 +575,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
    if (png_ptr->row_buf[0] > PNG_FILTER_VALUE_NONE)
    {
       if (png_ptr->row_buf[0] < PNG_FILTER_VALUE_LAST)
-         png_read_filter_row(&row_info, png_ptr->row_buf + 1,
+         png_read_filter_row(png_ptr, &row_info, png_ptr->row_buf + 1,
             png_ptr->prev_row + 1, png_ptr->row_buf[0]);
       else
          png_error(png_ptr, "bad adaptive filter value");
@@ -651,20 +624,20 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
             png_ptr->transformations);
 
       if (dsp_row != NULL)
-         png_combine_row(png_ptr, dsp_row, png_pass_dsp_mask[png_ptr->pass]);
+         png_combine_row(png_ptr, dsp_row, 1/*display*/);
 
       if (row != NULL)
-         png_combine_row(png_ptr, row, png_pass_mask[png_ptr->pass]);
+         png_combine_row(png_ptr, row, 0/*row*/);
    }
 
    else
 #endif
    {
       if (row != NULL)
-         png_combine_row(png_ptr, row, 0xff);
+         png_combine_row(png_ptr, row, -1/*ignored*/);
 
       if (dsp_row != NULL)
-         png_combine_row(png_ptr, dsp_row, 0xff);
+         png_combine_row(png_ptr, dsp_row, -1/*ignored*/);
    }
    png_read_finish_row(png_ptr);
 
@@ -828,6 +801,13 @@ png_read_end(png_structp png_ptr, png_infop info_ptr)
 
    png_crc_finish(png_ptr, 0); /* Finish off CRC from last IDAT chunk */
 
+#ifdef PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED
+   /* Report invalid palette index; added at libng-1.5.10 */
+   if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE &&
+      png_ptr->num_palette_max > png_ptr->num_palette)
+     png_benign_error(png_ptr, "Read palette index exceeding num_palette");
+#endif
+
    do
    {
       png_uint_32 length = png_read_chunk_header(png_ptr);
@@ -1056,9 +1036,13 @@ png_read_destroy(png_structp png_ptr, png_infop info_ptr,
    if (end_info_ptr != NULL)
       png_info_destroy(png_ptr, end_info_ptr);
 
+#ifdef PNG_READ_GAMMA_SUPPORTED
+   png_destroy_gamma_table(png_ptr);
+#endif
+
    png_free(png_ptr, png_ptr->zbuf);
    png_free(png_ptr, png_ptr->big_row_buf);
-   png_free(png_ptr, png_ptr->prev_row);
+   png_free(png_ptr, png_ptr->big_prev_row);
    png_free(png_ptr, png_ptr->chunkdata);
 
 #ifdef PNG_READ_QUANTIZE_SUPPORTED
@@ -1066,15 +1050,6 @@ png_read_destroy(png_structp png_ptr, png_infop info_ptr,
    png_free(png_ptr, png_ptr->quantize_index);
 #endif
 
-#ifdef PNG_READ_GAMMA_SUPPORTED
-   png_free(png_ptr, png_ptr->gamma_table);
-#endif
-
-#ifdef PNG_READ_BACKGROUND_SUPPORTED
-   png_free(png_ptr, png_ptr->gamma_from_1);
-   png_free(png_ptr, png_ptr->gamma_to_1);
-#endif
-
    if (png_ptr->free_me & PNG_FREE_PLTE)
       png_zfree(png_ptr, png_ptr->palette);
    png_ptr->free_me &= ~PNG_FREE_PLTE;
@@ -1092,54 +1067,12 @@ png_read_destroy(png_structp png_ptr, png_infop info_ptr,
    png_ptr->free_me &= ~PNG_FREE_HIST;
 #endif
 
-#ifdef PNG_READ_GAMMA_SUPPORTED
-   if (png_ptr->gamma_16_table != NULL)
-   {
-      int i;
-      int istop = (1 << (8 - png_ptr->gamma_shift));
-      for (i = 0; i < istop; i++)
-      {
-         png_free(png_ptr, png_ptr->gamma_16_table[i]);
-      }
-   png_free(png_ptr, png_ptr->gamma_16_table);
-   }
-
-#ifdef PNG_READ_BACKGROUND_SUPPORTED
-   if (png_ptr->gamma_16_from_1 != NULL)
-   {
-      int i;
-      int istop = (1 << (8 - png_ptr->gamma_shift));
-      for (i = 0; i < istop; i++)
-      {
-         png_free(png_ptr, png_ptr->gamma_16_from_1[i]);
-      }
-   png_free(png_ptr, png_ptr->gamma_16_from_1);
-   }
-   if (png_ptr->gamma_16_to_1 != NULL)
-   {
-      int i;
-      int istop = (1 << (8 - png_ptr->gamma_shift));
-      for (i = 0; i < istop; i++)
-      {
-         png_free(png_ptr, png_ptr->gamma_16_to_1[i]);
-      }
-   png_free(png_ptr, png_ptr->gamma_16_to_1);
-   }
-#endif
-#endif
-
    inflateEnd(&png_ptr->zstream);
 
 #ifdef PNG_PROGRESSIVE_READ_SUPPORTED
    png_free(png_ptr, png_ptr->save_buffer);
 #endif
 
-#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
-#ifdef PNG_TEXT_SUPPORTED
-   png_free(png_ptr, png_ptr->current_text);
-#endif /* PNG_TEXT_SUPPORTED */
-#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
-
    /* Save the important info out of the png_struct, in case it is
     * being used again.
     */

pngrtran.c

@@ -1,8 +1,8 @@
 
 /* pngrtran.c - transforms the data in a row for PNG readers
  *
- * Last changed in libpng 1.5.6 [(PENDING RELEASE)]
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.14 [(PENDING RELEASE)]
+ * Copyright (c) 1998-2013 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.)
  *
@@ -936,15 +936,15 @@ png_set_rgb_to_gray_fixed(png_structp png_ptr, int error_action,
 
    switch(error_action)
    {
-      case 1:
+      case PNG_ERROR_ACTION_NONE:
          png_ptr->transformations |= PNG_RGB_TO_GRAY;
          break;
 
-      case 2:
+      case PNG_ERROR_ACTION_WARN:
          png_ptr->transformations |= PNG_RGB_TO_GRAY_WARN;
          break;
 
-      case 3:
+      case PNG_ERROR_ACTION_ERROR:
          png_ptr->transformations |= PNG_RGB_TO_GRAY_ERR;
          break;
 
@@ -1221,7 +1221,7 @@ png_init_rgb_transformations(png_structp png_ptr)
             default:
 
             case 8:
-               /* Already 8 bits, fall through */
+               /* FALL THROUGH (already 8 bits) */
 
             case 16:
                /* Already a full 16 bits */
@@ -1465,6 +1465,28 @@ png_init_read_transformations(png_structp png_ptr)
    }
 #endif /* PNG_READ_BACKGROUND_SUPPORTED && PNG_READ_EXPAND_16_SUPPORTED */
 
+#if defined(PNG_READ_BACKGROUND_SUPPORTED) && \
+   (defined(PNG_READ_SCALE_16_TO_8_SUPPORTED) || \
+   defined(PNG_READ_STRIP_16_TO_8_SUPPORTED))
+   if ((png_ptr->transformations & (PNG_16_TO_8|PNG_SCALE_16_TO_8)) &&
+      (png_ptr->transformations & PNG_COMPOSE) &&
+      !(png_ptr->transformations & PNG_BACKGROUND_EXPAND) &&
+      png_ptr->bit_depth == 16)
+   {
+      /* On the other hand, if a 16-bit file is to be reduced to 8-bits per
+       * component this will also happen after PNG_COMPOSE and so the background
+       * color must be pre-expanded here.
+       *
+       * TODO: fix this too.
+       */
+      png_ptr->background.red = (png_uint_16)(png_ptr->background.red * 257);
+      png_ptr->background.green =
+         (png_uint_16)(png_ptr->background.green * 257);
+      png_ptr->background.blue = (png_uint_16)(png_ptr->background.blue * 257);
+      png_ptr->background.gray = (png_uint_16)(png_ptr->background.gray * 257);
+   }
+#endif
+
    /* NOTE: below 'PNG_READ_ALPHA_MODE_SUPPORTED' is presumed to also enable the
     * background support (see the comments in scripts/pnglibconf.dfa), this
     * allows pre-multiplication of the alpha channel to be implemented as
@@ -1512,6 +1534,16 @@ png_init_read_transformations(png_structp png_ptr)
 #ifdef PNG_READ_BACKGROUND_SUPPORTED
       if (png_ptr->transformations & PNG_COMPOSE)
       {
+         /* Issue a warning about this combination: because RGB_TO_GRAY is
+          * optimized to do the gamma transform if present yet do_background has
+          * to do the same thing if both options are set a
+          * double-gamma-correction happens.  This is true in all versions of
+          * libpng to date.
+          */
+         if (png_ptr->transformations & PNG_RGB_TO_GRAY)
+            png_warning(png_ptr,
+               "libpng does not support gamma+background+rgb_to_gray");
+
          if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
          {
             /* We don't get to here unless there is a tRNS chunk with non-opaque
@@ -1641,8 +1673,9 @@ png_init_read_transformations(png_structp png_ptr)
          /* if (png_ptr->background_gamma_type!=PNG_BACKGROUND_GAMMA_UNKNOWN) */
          else /* color_type != PNG_COLOR_TYPE_PALETTE */
          {
-            png_fixed_point g = PNG_FP_1;
-            png_fixed_point gs = PNG_FP_1;
+            int gs_sig, g_sig;
+            png_fixed_point g = PNG_FP_1;  /* Correction to linear */
+            png_fixed_point gs = PNG_FP_1; /* Correction to screen */
 
             switch (png_ptr->background_gamma_type)
             {
@@ -1666,34 +1699,45 @@ png_init_read_transformations(png_structp png_ptr)
                   png_error(png_ptr, "invalid background gamma type");
             }
 
-            png_ptr->background_1.gray = png_gamma_correct(png_ptr,
-                png_ptr->background.gray, g);
+            g_sig = png_gamma_significant(g);
+            gs_sig = png_gamma_significant(gs);
 
-            png_ptr->background.gray = png_gamma_correct(png_ptr,
-                png_ptr->background.gray, gs);
+            if (g_sig)
+               png_ptr->background_1.gray = png_gamma_correct(png_ptr,
+                   png_ptr->background.gray, g);
+
+            if (gs_sig)
+               png_ptr->background.gray = png_gamma_correct(png_ptr,
+                   png_ptr->background.gray, gs);
 
             if ((png_ptr->background.red != png_ptr->background.green) ||
                 (png_ptr->background.red != png_ptr->background.blue) ||
                 (png_ptr->background.red != png_ptr->background.gray))
             {
                /* RGB or RGBA with color background */
-               png_ptr->background_1.red = png_gamma_correct(png_ptr,
-                   png_ptr->background.red, g);
+               if (g_sig)
+               {
+                  png_ptr->background_1.red = png_gamma_correct(png_ptr,
+                      png_ptr->background.red, g);
 
-               png_ptr->background_1.green = png_gamma_correct(png_ptr,
-                   png_ptr->background.green, g);
+                  png_ptr->background_1.green = png_gamma_correct(png_ptr,
+                      png_ptr->background.green, g);
 
-               png_ptr->background_1.blue = png_gamma_correct(png_ptr,
-                   png_ptr->background.blue, g);
+                  png_ptr->background_1.blue = png_gamma_correct(png_ptr,
+                      png_ptr->background.blue, g);
+               }
 
-               png_ptr->background.red = png_gamma_correct(png_ptr,
-                   png_ptr->background.red, gs);
+               if (gs_sig)
+               {
+                  png_ptr->background.red = png_gamma_correct(png_ptr,
+                      png_ptr->background.red, gs);
 
-               png_ptr->background.green = png_gamma_correct(png_ptr,
-                   png_ptr->background.green, gs);
+                  png_ptr->background.green = png_gamma_correct(png_ptr,
+                      png_ptr->background.green, gs);
 
-               png_ptr->background.blue = png_gamma_correct(png_ptr,
-                   png_ptr->background.blue, gs);
+                  png_ptr->background.blue = png_gamma_correct(png_ptr,
+                      png_ptr->background.blue, gs);
+               }
             }
 
             else
@@ -1705,20 +1749,29 @@ png_init_read_transformations(png_structp png_ptr)
                png_ptr->background.red = png_ptr->background.green
                    = png_ptr->background.blue = png_ptr->background.gray;
             }
+
+            /* The background is now in screen gamma: */
+            png_ptr->background_gamma_type = PNG_BACKGROUND_GAMMA_SCREEN;
          } /* color_type != PNG_COLOR_TYPE_PALETTE */
       }/* png_ptr->transformations & PNG_BACKGROUND */
 
       else
       /* Transformation does not include PNG_BACKGROUND */
 #endif /* PNG_READ_BACKGROUND_SUPPORTED */
-      if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+      if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+         /* RGB_TO_GRAY needs to have non-gamma-corrected values! */
+         && ((png_ptr->transformations & PNG_EXPAND) == 0 ||
+         (png_ptr->transformations & PNG_RGB_TO_GRAY) == 0)
+#endif
+         )
       {
          png_colorp palette = png_ptr->palette;
          int num_palette = png_ptr->num_palette;
          int i;
 
-         /*NOTE: there are other transformations that should probably be in here
-          * too.
+         /* NOTE: there are other transformations that should probably be in
+          * here too.
           */
          for (i = 0; i < num_palette; i++)
          {
@@ -1777,12 +1830,15 @@ png_init_read_transformations(png_structp png_ptr)
 
 #ifdef PNG_READ_SHIFT_SUPPORTED
    if ((png_ptr->transformations & PNG_SHIFT) &&
+      !(png_ptr->transformations & PNG_EXPAND) &&
        (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE))
    {
       int i;
       int istop = png_ptr->num_palette;
       int shift = 8 - png_ptr->sig_bit.red;
 
+      png_ptr->transformations &= ~PNG_SHIFT;
+
       /* significant bits can be in the range 1 to 7 for a meaninful result, if
        * the number of significant bits is 0 then no shift is done (this is an
        * error condition which is silently ignored.)
@@ -1903,7 +1959,7 @@ png_read_transform_info(png_structp png_ptr, png_infop info_ptr)
          info_ptr->bit_depth = 8;
 #     else
 
-#        if PNG_READ_SCALE_16_TO_8_SUPPORTED
+#        ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
             png_ptr->transformations |= PNG_SCALE_16_TO_8;
             info_ptr->bit_depth = 8;
 #        else
@@ -2150,12 +2206,22 @@ png_do_read_transformations(png_structp png_ptr, png_row_infop row_info)
 
 #ifdef PNG_READ_GAMMA_SUPPORTED
    if ((png_ptr->transformations & PNG_GAMMA) &&
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+      /* Because RGB_TO_GRAY does the gamma transform. */
+      !(png_ptr->transformations & PNG_RGB_TO_GRAY) &&
+#endif
 #if (defined PNG_READ_BACKGROUND_SUPPORTED) ||\
    (defined PNG_READ_ALPHA_MODE_SUPPORTED)
+      /* Because PNG_COMPOSE does the gamma transform if there is something to
+       * do (if there is an alpha channel or transparency.)
+       */
        !((png_ptr->transformations & PNG_COMPOSE) &&
        ((png_ptr->num_trans != 0) ||
        (png_ptr->color_type & PNG_COLOR_MASK_ALPHA))) &&
 #endif
+      /* Because png_init_read_transformations transforms the palette, unless
+       * RGB_TO_GRAY will do the transform.
+       */
        (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE))
       png_do_gamma(row_info, png_ptr->row_buf + 1, png_ptr);
 #endif
@@ -2211,7 +2277,7 @@ png_do_read_transformations(png_structp png_ptr, png_row_infop row_info)
 #endif
 
 #ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
-   /*NOTE: moved here in 1.5.4 (from much later in this list.) */
+   /* NOTE: moved here in 1.5.4 (from much later in this list.) */
    if ((png_ptr->transformations & PNG_GRAY_TO_RGB) &&
        (png_ptr->mode & PNG_BACKGROUND_IS_GRAY))
       png_do_gray_to_rgb(row_info, png_ptr->row_buf + 1);
@@ -2233,6 +2299,13 @@ png_do_read_transformations(png_structp png_ptr, png_row_infop row_info)
       png_do_unpack(row_info, png_ptr->row_buf + 1);
 #endif
 
+#ifdef PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED
+   /* Added at libpng-1.5.10 */
+   if (row_info->color_type == PNG_COLOR_TYPE_PALETTE &&
+       png_ptr->num_palette_max >= 0)
+      png_do_check_palette_indexes(png_ptr, row_info);
+#endif
+
 #ifdef PNG_READ_BGR_SUPPORTED
    if (png_ptr->transformations & PNG_BGR)
       png_do_bgr(row_info, png_ptr->row_buf + 1);
@@ -2469,8 +2542,8 @@ png_do_unshift(png_row_infop row_info, png_bytep row,
 
             while (bp < bp_end)
             {
-               int byte = (*bp >> 1) & 0x55;
-               *bp++ = (png_byte)byte;
+               int b = (*bp >> 1) & 0x55;
+               *bp++ = (png_byte)b;
             }
             break;
          }
@@ -2488,8 +2561,8 @@ png_do_unshift(png_row_infop row_info, png_bytep row,
 
             while (bp < bp_end)
             {
-               int byte = (*bp >> gray_shift) & mask;
-               *bp++ = (png_byte)byte;
+               int b = (*bp >> gray_shift) & mask;
+               *bp++ = (png_byte)b;
             }
             break;
          }
@@ -2503,10 +2576,10 @@ png_do_unshift(png_row_infop row_info, png_bytep row,
 
             while (bp < bp_end)
             {
-               int byte = *bp >> shift[channel];
+               int b = *bp >> shift[channel];
                if (++channel >= channels)
                   channel = 0;
-               *bp++ = (png_byte)byte;
+               *bp++ = (png_byte)b;
             }
             break;
          }
@@ -2547,7 +2620,7 @@ png_do_scale_16_to_8(png_row_infop row_info, png_bytep row)
    if (row_info->bit_depth == 16)
    {
       png_bytep sp = row; /* source */
-      png_bytep dp = row; /* destinaton */
+      png_bytep dp = row; /* destination */
       png_bytep ep = sp + row_info->rowbytes; /* end+1 */
 
       while (sp < ep)
@@ -2608,7 +2681,7 @@ png_do_chop(png_row_infop row_info, png_bytep row)
    if (row_info->bit_depth == 16)
    {
       png_bytep sp = row; /* source */
-      png_bytep dp = row; /* destinaton */
+      png_bytep dp = row; /* destination */
       png_bytep ep = sp + row_info->rowbytes; /* end+1 */
 
       while (sp < ep)
@@ -3230,7 +3303,7 @@ png_do_rgb_to_gray(png_structp png_ptr, png_row_infop row_info, png_bytep row)
                if (red != green || red != blue)
                {
                   rgb_error |= 1;
-                  /*NOTE: this is the historical approach which simply
+                  /* NOTE: this is the historical approach which simply
                    * truncates the results.
                    */
                   *(dp++) = (png_byte)((rc*red + gc*green + bc*blue)>>15);
@@ -3316,7 +3389,7 @@ png_do_rgb_to_gray(png_structp png_ptr, png_row_infop row_info, png_bytep row)
                if (red != green || red != blue)
                   rgb_error |= 1;
 
-               /* From 1.5.5 in the 16 bit case do the accurate convertion even
+               /* From 1.5.5 in the 16 bit case do the accurate conversion even
                 * in the 'fast' case - this is because this is where the code
                 * ends up when handling linear 16 bit data.
                 */
@@ -3404,7 +3477,8 @@ png_build_grayscale_palette(int bit_depth, png_colorp palette)
 
 
 #ifdef PNG_READ_TRANSFORMS_SUPPORTED
-#ifdef PNG_READ_BACKGROUND_SUPPORTED
+#if (defined PNG_READ_BACKGROUND_SUPPORTED) ||\
+   (defined PNG_READ_ALPHA_MODE_SUPPORTED)
 /* Replace any alpha or transparency with the supplied background color.
  * "background" is already in the screen gamma, while "background_1" is
  * at a gamma of 1.0.  Paletted files have already been taken care of.
@@ -3631,8 +3705,10 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structp png_ptr)
                         if (v == png_ptr->trans_color.gray)
                         {
                            /* Background is already in screen gamma */
-                           *sp = (png_byte)((png_ptr->background.gray >> 8) & 0xff);
-                           *(sp + 1) = (png_byte)(png_ptr->background.gray & 0xff);
+                           *sp = (png_byte)((png_ptr->background.gray >> 8)
+                                & 0xff);
+                           *(sp + 1) = (png_byte)(png_ptr->background.gray
+                                & 0xff);
                         }
 
                         else
@@ -3655,8 +3731,10 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structp png_ptr)
 
                         if (v == png_ptr->trans_color.gray)
                         {
-                           *sp = (png_byte)((png_ptr->background.gray >> 8) & 0xff);
-                           *(sp + 1) = (png_byte)(png_ptr->background.gray & 0xff);
+                           *sp = (png_byte)((png_ptr->background.gray >> 8)
+                                & 0xff);
+                           *(sp + 1) = (png_byte)(png_ptr->background.gray
+                                & 0xff);
                         }
                      }
                   }
@@ -3736,9 +3814,12 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structp png_ptr)
                         /* Background is already in screen gamma */
                         *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff);
                         *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff);
-                        *(sp + 2) = (png_byte)((png_ptr->background.green >> 8) & 0xff);
-                        *(sp + 3) = (png_byte)(png_ptr->background.green & 0xff);
-                        *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8) & 0xff);
+                        *(sp + 2) = (png_byte)((png_ptr->background.green >> 8)
+                                & 0xff);
+                        *(sp + 3) = (png_byte)(png_ptr->background.green
+                                & 0xff);
+                        *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8)
+                                & 0xff);
                         *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff);
                      }
 
@@ -3779,9 +3860,12 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structp png_ptr)
                      {
                         *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff);
                         *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff);
-                        *(sp + 2) = (png_byte)((png_ptr->background.green >> 8) & 0xff);
-                        *(sp + 3) = (png_byte)(png_ptr->background.green & 0xff);
-                        *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8) & 0xff);
+                        *(sp + 2) = (png_byte)((png_ptr->background.green >> 8)
+                                & 0xff);
+                        *(sp + 3) = (png_byte)(png_ptr->background.green
+                                & 0xff);
+                        *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8)
+                                & 0xff);
                         *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff);
                      }
                   }
@@ -3836,7 +3920,7 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structp png_ptr)
                         *sp = (png_byte)png_ptr->background.gray;
 
                      else if (a < 0xff)
-                        png_composite(*sp, *sp, a, png_ptr->background_1.gray);
+                        png_composite(*sp, *sp, a, png_ptr->background.gray);
                   }
                }
             }
@@ -3864,7 +3948,8 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structp png_ptr)
                      else if (a == 0)
                      {
                         /* Background is already in screen gamma */
-                        *sp = (png_byte)((png_ptr->background.gray >> 8) & 0xff);
+                        *sp = (png_byte)((png_ptr->background.gray >> 8)
+                                & 0xff);
                         *(sp + 1) = (png_byte)(png_ptr->background.gray & 0xff);
                      }
 
@@ -3894,7 +3979,8 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structp png_ptr)
 
                      if (a == 0)
                      {
-                        *sp = (png_byte)((png_ptr->background.gray >> 8) & 0xff);
+                        *sp = (png_byte)((png_ptr->background.gray >> 8)
+                                & 0xff);
                         *(sp + 1) = (png_byte)(png_ptr->background.gray & 0xff);
                      }
 
@@ -3903,7 +3989,7 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structp png_ptr)
                         png_uint_16 g, v;
 
                         g = (png_uint_16)(((*sp) << 8) + *(sp + 1));
-                        png_composite_16(v, g, a, png_ptr->background_1.gray);
+                        png_composite_16(v, g, a, png_ptr->background.gray);
                         *sp = (png_byte)((v >> 8) & 0xff);
                         *(sp + 1) = (png_byte)(v & 0xff);
                      }
@@ -4024,9 +4110,12 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structp png_ptr)
                         /* Background is already in screen gamma */
                         *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff);
                         *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff);
-                        *(sp + 2) = (png_byte)((png_ptr->background.green >> 8) & 0xff);
-                        *(sp + 3) = (png_byte)(png_ptr->background.green & 0xff);
-                        *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8) & 0xff);
+                        *(sp + 2) = (png_byte)((png_ptr->background.green >> 8)
+                                & 0xff);
+                        *(sp + 3) = (png_byte)(png_ptr->background.green
+                                & 0xff);
+                        *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8)
+                                & 0xff);
                         *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff);
                      }
 
@@ -4037,14 +4126,16 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structp png_ptr)
                         v = gamma_16_to_1[*(sp + 1) >> gamma_shift][*sp];
                         png_composite_16(w, v, a, png_ptr->background_1.red);
                         if (!optimize)
-                           w = gamma_16_from_1[((w&0xff) >> gamma_shift)][w >> 8];
+                           w = gamma_16_from_1[((w&0xff) >> gamma_shift)]
+                               [w >> 8];
                         *sp = (png_byte)((w >> 8) & 0xff);
                         *(sp + 1) = (png_byte)(w & 0xff);
 
                         v = gamma_16_to_1[*(sp + 3) >> gamma_shift][*(sp + 2)];
                         png_composite_16(w, v, a, png_ptr->background_1.green);
                         if (!optimize)
-                           w = gamma_16_from_1[((w&0xff) >> gamma_shift)][w >> 8];
+                           w = gamma_16_from_1[((w&0xff) >> gamma_shift)]
+                               [w >> 8];
 
                         *(sp + 2) = (png_byte)((w >> 8) & 0xff);
                         *(sp + 3) = (png_byte)(w & 0xff);
@@ -4052,7 +4143,8 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structp png_ptr)
                         v = gamma_16_to_1[*(sp + 5) >> gamma_shift][*(sp + 4)];
                         png_composite_16(w, v, a, png_ptr->background_1.blue);
                         if (!optimize)
-                           w = gamma_16_from_1[((w&0xff) >> gamma_shift)][w >> 8];
+                           w = gamma_16_from_1[((w&0xff) >> gamma_shift)]
+                               [w >> 8];
 
                         *(sp + 4) = (png_byte)((w >> 8) & 0xff);
                         *(sp + 5) = (png_byte)(w & 0xff);
@@ -4073,9 +4165,12 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structp png_ptr)
                      {
                         *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff);
                         *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff);
-                        *(sp + 2) = (png_byte)((png_ptr->background.green >> 8) & 0xff);
-                        *(sp + 3) = (png_byte)(png_ptr->background.green & 0xff);
-                        *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8) & 0xff);
+                        *(sp + 2) = (png_byte)((png_ptr->background.green >> 8)
+                                & 0xff);
+                        *(sp + 3) = (png_byte)(png_ptr->background.green
+                                & 0xff);
+                        *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8)
+                                & 0xff);
                         *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff);
                      }
 
@@ -4112,7 +4207,7 @@ png_do_compose(png_row_infop row_info, png_bytep row, png_structp png_ptr)
       }
    }
 }
-#endif
+#endif /* PNG_READ_BACKGROUND_SUPPORTED || PNG_READ_ALPHA_MODE_SUPPORTED */
 
 #ifdef PNG_READ_GAMMA_SUPPORTED
 /* Gamma correct the image, avoiding the alpha channel.  Make sure
@@ -4651,7 +4746,9 @@ png_do_expand(png_row_infop row_info, png_bytep row,
          {
             if (row_info->bit_depth == 8)
             {
-               gray = gray & 0xff;
+               /* NOTE: prior to libpng 1.5.14 this cleared out the top bits of
+                * 'gray', however if those are set it is an error.
+                */
                sp = row + (png_size_t)row_width - 1;
                dp = row + (png_size_t)(row_width << 1) - 1;
 

pngset.c

@@ -1,8 +1,8 @@
 
 /* pngset.c - storage of image information into info struct
  *
- * Last changed in libpng 1.5.6 [(PENDING RELEASE)]
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.14 [(PENDING RELEASE)]
+ * Copyright (c) 1998-2013 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.)
  *
@@ -149,7 +149,7 @@ png_set_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point
     * possible for 1/gamma to overflow the limit of 21474 and this means the
     * gamma value must be at least 5/100000 and hence at most 20000.0.  For
     * safety the limits here are a little narrower.  The values are 0.00016 to
-    * 6250.0, which are truly ridiculous gammma values (and will produce
+    * 6250.0, which are truly ridiculous gamma values (and will produce
     * displays that are all black or all white.)
     */
    if (file_gamma < 16 || file_gamma > 625000000)
@@ -692,24 +692,28 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr,
     */
    if (info_ptr->num_text + num_text > info_ptr->max_text)
    {
+      int old_max_text = info_ptr->max_text;
+      int old_num_text = info_ptr->num_text;
+
       if (info_ptr->text != NULL)
       {
          png_textp old_text;
-         int old_max;
 
-         old_max = info_ptr->max_text;
          info_ptr->max_text = info_ptr->num_text + num_text + 8;
          old_text = info_ptr->text;
+
          info_ptr->text = (png_textp)png_malloc_warn(png_ptr,
             (png_size_t)(info_ptr->max_text * png_sizeof(png_text)));
 
          if (info_ptr->text == NULL)
          {
-            png_free(png_ptr, old_text);
+            /* Restore to previous condition */
+            info_ptr->max_text = old_max_text;
+            info_ptr->text = old_text;
             return(1);
          }
 
-         png_memcpy(info_ptr->text, old_text, (png_size_t)(old_max *
+         png_memcpy(info_ptr->text, old_text, (png_size_t)(old_max_text *
              png_sizeof(png_text)));
          png_free(png_ptr, old_text);
       }
@@ -721,7 +725,12 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr,
          info_ptr->text = (png_textp)png_malloc_warn(png_ptr,
              (png_size_t)(info_ptr->max_text * png_sizeof(png_text)));
          if (info_ptr->text == NULL)
+         {
+            /* Restore to previous condition */
+            info_ptr->num_text = old_num_text;
+            info_ptr->max_text = old_max_text;
             return(1);
+         }
          info_ptr->free_me |= PNG_FREE_TEXT;
       }
 
@@ -864,6 +873,15 @@ png_set_tIME(png_structp png_ptr, png_infop info_ptr, png_const_timep mod_time)
        (png_ptr->mode & PNG_WROTE_tIME))
       return;
 
+   if (mod_time->month == 0   || mod_time->month > 12  ||
+       mod_time->day   == 0   || mod_time->day   > 31  ||
+       mod_time->hour  > 23   || mod_time->minute > 59 ||
+       mod_time->second > 60)
+   {
+      png_warning(png_ptr, "Ignoring invalid time value");
+      return;
+   }
+
    png_memcpy(&(info_ptr->mod_time), mod_time, png_sizeof(png_time));
    info_ptr->valid |= PNG_INFO_tIME;
 }
@@ -879,6 +897,12 @@ png_set_tRNS(png_structp png_ptr, png_infop info_ptr,
    if (png_ptr == NULL || info_ptr == NULL)
       return;
 
+   if (num_trans < 0 || num_trans > PNG_MAX_PALETTE_LENGTH)
+      {
+        png_warning(png_ptr, "Ignoring invalid num_trans value");
+        return;
+      }
+
    if (trans_alpha != NULL)
    {
        /* It may not actually be necessary to set png_ptr->trans_alpha here;
@@ -1015,9 +1039,16 @@ png_set_unknown_chunks(png_structp png_ptr,
    if (png_ptr == NULL || info_ptr == NULL || num_unknowns == 0)
       return;
 
-   np = (png_unknown_chunkp)png_malloc_warn(png_ptr,
-       (png_size_t)(info_ptr->unknown_chunks_num + num_unknowns) *
-       png_sizeof(png_unknown_chunk));
+   if (num_unknowns < 0 ||
+       num_unknowns >= UINT_MAX-info_ptr->unknown_chunks_num ||
+       num_unknowns >= PNG_SIZE_MAX/png_sizeof(png_unknown_chunk)
+       - info_ptr->unknown_chunks_num)
+      np=NULL;
+
+   else
+      np = (png_unknown_chunkp)png_malloc_warn(png_ptr,
+          (png_size_t)(info_ptr->unknown_chunks_num + num_unknowns) *
+          png_sizeof(png_unknown_chunk));
 
    if (np == NULL)
    {
@@ -1272,4 +1303,22 @@ png_set_benign_errors(png_structp png_ptr, int allowed)
       png_ptr->flags &= ~PNG_FLAG_BENIGN_ERRORS_WARN;
 }
 #endif /* PNG_BENIGN_ERRORS_SUPPORTED */
+
+#ifdef PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED
+/* Whether to report invalid palette index; added at libng-1.5.10
+ *   allowed  - one of 0: disable; 1: enable
+ */
+void PNGAPI
+png_set_check_for_invalid_index(png_structp png_ptr, int allowed)
+{
+   png_debug(1, "in png_set_check_for_invalid_index");
+
+   if (allowed)
+      png_ptr->num_palette_max = 0;
+
+   else
+      png_ptr->num_palette_max = -1;
+}
+#endif
+
 #endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */

pngstruct.h

@@ -1,11 +1,11 @@
 
 /* pngstruct.h - header file for PNG reference library
  *
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2012 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.)
  *
- * Last changed in libpng 1.5.5 [September 22, 2011]
+ * Last changed in libpng 1.5.9 [February 18, 2012]
  *
  * This code is released under the libpng license.
  * For conditions of distribution and use, see the disclaimer
@@ -105,8 +105,12 @@ struct png_struct_def
    png_uint_32 iwidth;        /* width of current interlaced row in pixels */
    png_uint_32 row_number;    /* current row in interlace pass */
    png_uint_32 chunk_name;    /* PNG_CHUNK() id of current chunk */
-   png_bytep prev_row;        /* buffer to save previous (unfiltered) row */
-   png_bytep row_buf;         /* buffer to save current (unfiltered) row */
+   png_bytep prev_row;        /* buffer to save previous (unfiltered) row.
+                               * This is a pointer into big_prev_row
+                               */
+   png_bytep row_buf;         /* buffer to save current (unfiltered) row.
+                               * This is a pointer into big_row_buf
+                               */
    png_bytep sub_row;         /* buffer to save "sub" row when filtering */
    png_bytep up_row;          /* buffer to save "up" row when filtering */
    png_bytep avg_row;         /* buffer to save "avg" row when filtering */
@@ -117,6 +121,12 @@ struct png_struct_def
    png_uint_32 crc;           /* current chunk CRC value */
    png_colorp palette;        /* palette from the input file */
    png_uint_16 num_palette;   /* number of color entries in palette */
+
+/* Added at libpng-1.5.10 */
+#ifdef PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED
+   int num_palette_max;       /* maximum palette index found in IDAT */
+#endif
+
    png_uint_16 num_trans;     /* number of transparency values */
    png_byte compression;      /* file compression type (always 0) */
    png_byte filter;           /* file filter type (always 0) */
@@ -157,19 +167,21 @@ struct png_struct_def
    png_uint_32 flush_rows;    /* number of rows written since last flush */
 #endif
 
-#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
+#ifdef PNG_READ_GAMMA_SUPPORTED
    int gamma_shift;      /* number of "insignificant" bits in 16-bit gamma */
    png_fixed_point gamma;        /* file gamma value */
    png_fixed_point screen_gamma; /* screen gamma value (display_exponent) */
-#endif
 
-#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
    png_bytep gamma_table;     /* gamma table for 8-bit depth files */
+   png_uint_16pp gamma_16_table; /* gamma table for 16-bit depth files */
+#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \
+   defined(PNG_READ_ALPHA_MODE_SUPPORTED) || \
+   defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
    png_bytep gamma_from_1;    /* converts from 1.0 to screen */
    png_bytep gamma_to_1;      /* converts from file to 1.0 */
-   png_uint_16pp gamma_16_table; /* gamma table for 16-bit depth files */
    png_uint_16pp gamma_16_from_1; /* converts from 1.0 to screen */
    png_uint_16pp gamma_16_to_1; /* converts from file to 1.0 */
+#endif /* READ_BACKGROUND || READ_ALPHA_MODE || RGB_TO_GRAY */
 #endif
 
 #if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_sBIT_SUPPORTED)
@@ -205,13 +217,6 @@ struct png_struct_def
    int process_mode;                 /* what push library is currently doing */
    int cur_palette;                  /* current push library palette index */
 
-#  ifdef PNG_TEXT_SUPPORTED
-     png_size_t current_text_size;   /* current size of text input data */
-     png_size_t current_text_left;   /* how much text left to read in input */
-     png_charp current_text;         /* current text chunk buffer */
-     png_charp current_text_ptr;     /* current location in current_text */
-#  endif /* PNG_PROGRESSIVE_READ_SUPPORTED && PNG_TEXT_SUPPORTED */
-
 #endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
 
 #if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__)
@@ -243,6 +248,7 @@ struct png_struct_def
 #endif
 
 #ifdef PNG_TIME_RFC1123_SUPPORTED
+   /* This is going to be unused in libpng16 and removed from libpng17 */
    char time_buffer[29]; /* String to hold RFC 1123 time text */
 #endif
 
@@ -277,9 +283,7 @@ struct png_struct_def
 #endif
 
 /* New member added in libpng-1.0.4 (renamed in 1.0.9) */
-#if defined(PNG_MNG_FEATURES_SUPPORTED) || \
-    defined(PNG_READ_EMPTY_PLTE_SUPPORTED) || \
-    defined(PNG_WRITE_EMPTY_PLTE_SUPPORTED)
+#if defined(PNG_MNG_FEATURES_SUPPORTED)
 /* Changed from png_byte to png_uint_32 at version 1.2.0 */
    png_uint_32 mng_features_permitted;
 #endif
@@ -334,9 +338,8 @@ struct png_struct_def
    png_unknown_chunk unknown_chunk;
 #endif
 
-/* New members added in libpng-1.2.26 */
+/* New member added in libpng-1.2.26 */
   png_size_t old_big_row_buf_size;
-  png_size_t old_prev_row_size;
 
 /* New member added in libpng-1.2.30 */
   png_charp chunkdata;  /* buffer for reading chunk data */
@@ -345,5 +348,11 @@ struct png_struct_def
 /* New member added in libpng-1.4.0 */
    png_uint_32 io_state;
 #endif
+
+/* New member added in libpng-1.5.6 */
+   png_bytep big_prev_row;
+
+   void (*read_filter[PNG_FILTER_VALUE_LAST-1])(png_row_infop row_info,
+      png_bytep row, png_const_bytep prev_row);
 };
 #endif /* PNGSTRUCT_H */

pngtrans.c

@@ -1,8 +1,8 @@
 
 /* pngtrans.c - transforms the data in a row (used by both readers and writers)
  *
- * Last changed in libpng 1.5.4 [July 7, 2011]
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.11 [June 14, 2012]
+ * Copyright (c) 1998-2012 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.)
  *
@@ -619,6 +619,109 @@ png_do_bgr(png_row_infop row_info, png_bytep row)
 }
 #endif /* PNG_READ_BGR_SUPPORTED or PNG_WRITE_BGR_SUPPORTED */
 
+#if defined(PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED) || \
+    defined(PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED)
+/* Added at libpng-1.5.10 */
+void /* PRIVATE */
+png_do_check_palette_indexes(png_structp png_ptr, png_row_infop row_info)
+{
+   if (png_ptr->num_palette < (1 << row_info->bit_depth) &&
+      png_ptr->num_palette > 0) /* num_palette can be 0 in MNG files */
+   {
+      /* Calculations moved outside switch in an attempt to stop different
+       * compiler warnings.  'padding' is in *bits* within the last byte, it is
+       * an 'int' because pixel_depth becomes an 'int' in the expression below,
+       * and this calculation is used because it avoids warnings that other
+       * forms produced on either GCC or MSVC.
+       */
+      int padding = (-row_info->pixel_depth * row_info->width) & 7;
+      png_bytep rp = png_ptr->row_buf + row_info->rowbytes;
+
+      switch (row_info->bit_depth)
+      {
+         case 1:
+         {
+            /* in this case, all bytes must be 0 so we don't need
+             * to unpack the pixels except for the rightmost one.
+             */
+            for (; rp > png_ptr->row_buf; rp--)
+            {
+              if (*rp >> padding != 0)
+                 png_ptr->num_palette_max = 1;
+              padding = 0;
+            }
+
+            break;
+         }
+
+         case 2:
+         {
+            for (; rp > png_ptr->row_buf; rp--)
+            {
+              int i = ((*rp >> padding) & 0x03);
+
+              if (i > png_ptr->num_palette_max)
+                 png_ptr->num_palette_max = i;
+
+              i = (((*rp >> padding) >> 2) & 0x03);
+
+              if (i > png_ptr->num_palette_max)
+                 png_ptr->num_palette_max = i;
+
+              i = (((*rp >> padding) >> 4) & 0x03);
+
+              if (i > png_ptr->num_palette_max)
+                 png_ptr->num_palette_max = i;
+
+              i = (((*rp >> padding) >> 6) & 0x03);
+
+              if (i > png_ptr->num_palette_max)
+                 png_ptr->num_palette_max = i;
+
+              padding = 0;
+            }
+
+            break;
+         }
+
+         case 4:
+         {
+            for (; rp > png_ptr->row_buf; rp--)
+            {
+              int i = ((*rp >> padding) & 0x0f);
+
+              if (i > png_ptr->num_palette_max)
+                 png_ptr->num_palette_max = i;
+
+              i = (((*rp >> padding) >> 4) & 0x0f);
+
+              if (i > png_ptr->num_palette_max)
+                 png_ptr->num_palette_max = i;
+
+              padding = 0;
+            }
+
+            break;
+         }
+
+         case 8:
+         {
+            for (; rp > png_ptr->row_buf; rp--)
+            {
+               if (*rp > png_ptr->num_palette_max)
+                  png_ptr->num_palette_max = (int) *rp;
+            }
+
+            break;
+         }
+
+         default:
+            break;
+      }
+   }
+}
+#endif /* PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED */
+
 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
     defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
 #ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED

pngusr.dfa

@@ -0,0 +1,14 @@
+# pngusr.dfa
+#
+# Build time configuration of libpng
+#
+# Enter build configuration options in this file
+#
+# Security settings: by default these limits are unset, you can change them
+# here by entering the appropriate values as #defines preceded by '@' (to cause,
+# them to be passed through to the build of pnglibconf.h), for example:
+#
+# @# define PNG_USER_WIDTH_MAX 1000000
+# @# define PNG_USER_HEIGHT_MAX 1000000
+# @# define PNG_USER_CHUNK_CACHE_MAX 128
+# @# define PNG_USER_CHUNK_MALLOC_MAX 8000000

pngwrite.c

@@ -1,8 +1,8 @@
 
 /* pngwrite.c - general routines to write a PNG file
  *
- * Last changed in libpng 1.5.6 [(PENDING RELEASE)]
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.14 [(PENDING RELEASE)]
+ * Copyright (c) 1998-2013 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.)
  *
@@ -305,6 +305,11 @@ png_write_end(png_structp png_ptr, png_infop info_ptr)
    if (!(png_ptr->mode & PNG_HAVE_IDAT))
       png_error(png_ptr, "No IDATs written into file");
 
+#ifdef PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED
+   if (png_ptr->num_palette_max > png_ptr->num_palette)
+      png_benign_error(png_ptr, "Wrote palette index exceeding num_palette");
+#endif
+
    /* See if user wants us to write information chunks */
    if (info_ptr != NULL)
    {
@@ -415,7 +420,6 @@ png_write_end(png_structp png_ptr, png_infop info_ptr)
 }
 
 #ifdef PNG_CONVERT_tIME_SUPPORTED
-/* "tm" structure is not supported on WindowsCE */
 void PNGAPI
 png_convert_from_struct_tm(png_timep ptime, PNG_CONST struct tm FAR * ttime)
 {
@@ -490,8 +494,9 @@ png_create_write_struct_2,(png_const_charp user_png_ver, png_voidp error_ptr,
 
 #ifdef PNG_SETJMP_SUPPORTED
 /* Applications that neglect to set up their own setjmp() and then
-   encounter a png_error() will longjmp here.  Since the jmpbuf is
-   then meaningless we abort instead of returning. */
+ * encounter a png_error() will longjmp here.  Since the jmpbuf is
+ * then meaningless we abort instead of returning.
+ */
 #ifdef USE_FAR_KEYWORD
    if (setjmp(tmp_jmpbuf))
 #else
@@ -797,6 +802,14 @@ png_write_row(png_structp png_ptr, png_const_bytep row)
    }
 #endif
 
+/* Added at libpng-1.5.10 */
+#ifdef PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED
+   /* Check for out-of-range palette index */
+   if (row_info.color_type == PNG_COLOR_TYPE_PALETTE &&
+       png_ptr->num_palette_max >= 0)
+      png_do_check_palette_indexes(png_ptr, &row_info);
+#endif
+
    /* Find a filter if necessary, filter the row and write it out. */
    png_write_find_filter(png_ptr, &row_info);
 
@@ -1028,6 +1041,7 @@ png_set_filter(png_structp png_ptr, int method, int filters)
          case 5:
          case 6:
          case 7: png_warning(png_ptr, "Unknown row filter for method 0");
+             /* FALL THROUGH */
 #endif /* PNG_WRITE_FILTER_SUPPORTED */
          case PNG_FILTER_VALUE_NONE:
             png_ptr->do_filter = PNG_FILTER_NONE; break;

pngwtran.c

@@ -1,8 +1,8 @@
 
 /* pngwtran.c - transforms the data in a row for PNG writers
  *
- * Last changed in libpng 1.5.6 [(PENDING RELEASE)]
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.14 [(PENDING RELEASE)]
+ * Copyright (c) 1998-2013 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.)
  *
@@ -45,8 +45,20 @@ png_do_write_transformations(png_structp png_ptr, png_row_infop row_info)
 
 #ifdef PNG_WRITE_FILLER_SUPPORTED
    if (png_ptr->transformations & PNG_FILLER)
-      png_do_strip_channel(row_info, png_ptr->row_buf + 1,
-         !(png_ptr->flags & PNG_FLAG_FILLER_AFTER));
+   {
+      if (png_ptr->color_type & (PNG_COLOR_MASK_ALPHA|PNG_COLOR_MASK_PALETTE))
+      {
+         /* GA, RGBA or palette; in any of these cases libpng will not do the
+          * the correct thing (whatever that might be).
+          */
+         png_warning(png_ptr, "incorrect png_set_filler call ignored");
+         png_ptr->transformations &= ~PNG_FILLER;
+      }
+
+      else
+         png_do_strip_channel(row_info, png_ptr->row_buf + 1,
+            !(png_ptr->flags & PNG_FLAG_FILLER_AFTER));
+   }
 #endif
 
 #ifdef PNG_WRITE_PACKSWAP_SUPPORTED

pngwutil.c

@@ -1,8 +1,8 @@
 
 /* pngwutil.c - utilities to write a PNG file
  *
- * Last changed in libpng 1.5.6 [(PENDING RELEASE)]
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
+ * Last changed in libpng 1.5.14 [(PENDING RELEASE)]
+ * Copyright (c) 1998-2013 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.)
  *
@@ -92,8 +92,10 @@ png_write_chunk_header(png_structp png_ptr, png_uint_32 chunk_name,
 {
    png_byte buf[8];
 
-   png_debug2(0, "Writing %s chunk, length = %lu", chunk_string,
-      (unsigned long)length);
+#if defined(PNG_DEBUG) && (PNG_DEBUG > 0)
+   PNG_CSTRING_FROM_CHUNK(buf, chunk_name);
+   png_debug2(0, "Writing %s chunk, length = %lu", buf, (unsigned long)length);
+#endif
 
    if (png_ptr == NULL)
       return;
@@ -458,24 +460,21 @@ png_text_compress(png_structp png_ptr,
                old_ptr = comp->output_ptr;
 
                comp->output_ptr = (png_bytepp)png_malloc(png_ptr,
-                   (png_alloc_size_t)
-                   (comp->max_output_ptr * png_sizeof(png_charpp)));
+                   (comp->max_output_ptr * png_sizeof(png_bytep)));
 
                png_memcpy(comp->output_ptr, old_ptr, old_max
-                   * png_sizeof(png_charp));
+                   * png_sizeof(png_bytep));
 
                png_free(png_ptr, old_ptr);
             }
             else
                comp->output_ptr = (png_bytepp)png_malloc(png_ptr,
-                   (png_alloc_size_t)
-                   (comp->max_output_ptr * png_sizeof(png_charp)));
+                   (comp->max_output_ptr * png_sizeof(png_bytep)));
          }
 
          /* Save the data */
          comp->output_ptr[comp->num_output_ptr] =
-             (png_bytep)png_malloc(png_ptr,
-             (png_alloc_size_t)png_ptr->zbuf_size);
+             (png_bytep)png_malloc(png_ptr, png_ptr->zbuf_size);
 
          png_memcpy(comp->output_ptr[comp->num_output_ptr], png_ptr->zbuf,
              png_ptr->zbuf_size);
@@ -567,20 +566,24 @@ png_text_compress(png_structp png_ptr,
 
 /* Ship the compressed text out via chunk writes */
 static void /* PRIVATE */
-png_write_compressed_data_out(png_structp png_ptr, compression_state *comp)
+png_write_compressed_data_out(png_structp png_ptr, compression_state *comp,
+   png_size_t data_len)
 {
    int i;
 
    /* Handle the no-compression case */
    if (comp->input)
    {
-      png_write_chunk_data(png_ptr, comp->input, comp->input_len);
+      png_write_chunk_data(png_ptr, comp->input, data_len);
 
       return;
    }
 
 #ifdef PNG_WRITE_OPTIMIZE_CMF_SUPPORTED
-   if (comp->input_len >= 2 && comp->input_len < 16384)
+   /* The zbuf_size test is because the code below doesn't work if zbuf_size is
+    * '1'; simply skip it to avoid memory overwrite.
+    */
+   if (data_len >= 2 && comp->input_len < 16384 && png_ptr->zbuf_size > 1)
    {
       unsigned int z_cmf;  /* zlib compression method and flags */
 
@@ -1159,8 +1162,7 @@ png_write_iCCP(png_structp png_ptr, png_const_charp name, int compression_type,
 
    if (profile_len)
    {
-      comp.input_len = profile_len;
-      png_write_compressed_data_out(png_ptr, &comp);
+      png_write_compressed_data_out(png_ptr, &comp, profile_len);
    }
 
    png_write_chunk_end(png_ptr);
@@ -1365,7 +1367,8 @@ png_write_tRNS(png_structp png_ptr, png_const_bytep trans_alpha,
       }
 
       /* Write the chunk out as it is */
-      png_write_complete_chunk(png_ptr, png_tRNS, trans_alpha, (png_size_t)num_trans);
+      png_write_complete_chunk(png_ptr, png_tRNS, trans_alpha,
+         (png_size_t)num_trans);
    }
 
    else if (color_type == PNG_COLOR_TYPE_GRAY)
@@ -1730,8 +1733,7 @@ png_write_zTXt(png_structp png_ptr, png_const_charp key, png_const_charp text,
    png_write_chunk_data(png_ptr, &buf, (png_size_t)1);
 
    /* Write the compressed data */
-   comp.input_len = text_len;
-   png_write_compressed_data_out(png_ptr, &comp);
+   png_write_compressed_data_out(png_ptr, &comp, text_len);
 
    /* Close the chunk */
    png_write_chunk_end(png_ptr);
@@ -1822,7 +1824,7 @@ png_write_iTXt(png_structp png_ptr, int compression, png_const_charp key,
    png_write_chunk_data(png_ptr, (lang_key ? (png_const_bytep)lang_key : cbuf),
        (png_size_t)(lang_key_len + 1));
 
-   png_write_compressed_data_out(png_ptr, &comp);
+   png_write_compressed_data_out(png_ptr, &comp, text_len);
 
    png_write_chunk_end(png_ptr);
 

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-#
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-@echo Checking for the libpng configuration file pnglibconf.h
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+#
+@if not exist pngconfig.dfa $(MAKE) $(__MAKEOPTS__) -f pngconfig.mak defaults
+@if exist config.inf type config.inf
+@echo Checking for the libpng configuration file pnglibconf.h
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-# This is an OpenWatcom make file which builds pnglibconf.h - the libpng
-# configuration header.  You can ignore this file if you don't need to
-# configure libpng; a default configuration will be built.
-#
-# For more information build libpng.wpj under the IDE and then read the
-# generated files:
-#
-#    config.inf: Basic configuration information for a standard build.
-#    pngconfig.dfa: Advanced configuration for non-standard libpng builds.
-#
-DELETE=rm -f
-ECHO=echo
-COPY=copy
-#
-# If your configuration needs to test compiler flags when building
-# pnglibconf.h you may need to override the following on the wmake command
-# line:
-CFLAGS=
-CC=wcl386
-CPP=$(CC) -pw0
-#
-# Read awk from the environment if set, else it can be set on the command
-# line (the default approach is to set the %awk% environment variable in the
-# IDE libpng.wpj 'before' rule - this setting is local.)
-!ifdef %awk
-AWK=$(%awk)
-!endif
-#
-# pnglibconf.h must exist in the source directory, this is the final rule
-# which copies the local built version (and this is the default target for
-# this makefile.)
-..\..\pnglibconf.h: pnglibconf.h
- $(COPY) pnglibconf.h $@
-
-!ifdef AWK
-# CPPFLAGS should contain the options to control the result,
-# but DEFS and CFLAGS are also supported here, override
-# as appropriate
-DFNFLAGS = $(DEFS) $(CPPFLAGS) $(CFLAGS)
-
-pnglibconf.h: pnglibconf.dfn
- $(DELETE) $@ dfn.c dfn1.out dfn2.out
- $(ECHO) $#include "pnglibconf.dfn" >dfn.c
- $(CPP) $(DFNFLAGS) dfn.c >dfn1.out
- $(AWK) -f << dfn1.out >dfn2.out
-/^.*PNG_DEFN_MAGIC-.*-PNG_DEFN_END.*$$/{
- sub(/^.*PNG_DEFN_MAGIC-/, "")
- sub(/ *-PNG_DEFN_END.*$$/, "")
- gsub(/ *@@@ */, "")
- print
-}
-<<
- $(COPY) dfn2.out $@
- @type << >pngconfig.inf
-This is a locally configurable build of libpng.lib; for configuration
-instructions consult and edit projects/openwatcom/pngconfig.dfa
-<<
- $(DELETE) dfn.c dfn1.out dfn2.out
-
-pnglibconf.dfn: ..\..\scripts\pnglibconf.dfa ..\..\scripts\options.awk pngconfig.dfa
- $(DELETE) $@ dfn1.out dfn2.out
- $(AWK) -f ..\..\scripts\options.awk out=dfn1.out ..\..\scripts\pnglibconf.dfa pngconfig.dfa $(DFA_XTRA) 1>&2
- $(AWK) -f ..\..\scripts\options.awk out=dfn2.out dfn1.out 1>&2
- $(COPY) dfn2.out $@
- $(DELETE) dfn1.out dfn2.out
-
-!else
-# The following lines are used to copy scripts\pnglibconf.h.prebuilt and make
-# the required change to the calling convention.
-#
-# By default libpng is built to use the __cdecl calling convention on
-# Windows.  This gives compatibility with MSVC and GCC.  Unfortunately it
-# does not work with OpenWatcom because OpenWatcom implements longjmp using
-# the __watcall convention (compared with both MSVC and GCC which use __cdecl
-# for library functions.)
-#
-# Thus the default must be changed to build on OpenWatcom and, once changed,
-# the result will not be compatible with applications built using other
-# compilers (in fact attempts to build will fail at compile time.)
-#
-pnglibconf.h: ..\..\scripts\pnglibconf.h.prebuilt .existsonly
- @$(ECHO) .
- @$(ECHO) .
- @$(ECHO) $$(AWK) NOT AVAILABLE: COPYING scripts\pnglibconf.h.prebuilt
- @$(ECHO) .
- @$(ECHO) .
- vi -q -k ":1,$$s/PNG_API_RULE 0$$/PNG_API_RULE 2/\n:w! $@\n:q!\n" ..\..\scripts\pnglibconf.h.prebuilt
- @$(ECHO) .
- @$(ECHO) .
- @$(ECHO) YOU HAVE A DEFAULT CONFIGURATION BECAUSE YOU DO NOT HAVE AWK!
- @$(ECHO) .
- @$(ECHO) .
- @type << >pngconfig.inf
-This is the default configuration of libpng.lib, if you wish to
-change the configuration please consult the instructions in
-projects/owatcom/pngconfig.dfa.
-<<
-
-!endif
-
-# Make the default files
-defaults: .symbolic
- @$(COPY) << config.inf
-$# The libpng project is incompletely configured.  To complete configuration
-$# please complete the following steps:
-$#
-$#   1) Edit the 'before' rule of libpng.wpj (from the IDE) to define the
-$#      locations of the zlib include file zlib.h and the built zlib library,
-$#      zlib.lib.
-$#
-$#   2) If you want to change libpng to a non-standard configuration also
-$#      change the definition of 'awk' in the before rule to the name of your
-$#      awk command.  For more instructions on configuration read
-$#      pngconfig.dfa.
-$#
-$#   3) Delete this file (config.inf).
-<<
- @$(COPY) << pngconfig.dfa
-$# pngconfig.dfa: this file contains configuration options for libpng.
-$# If emtpy the standard configuration will be built.  For this file to be
-$# used a working version of the program 'awk' is required and the program
-$# must be identified in the 'before' rule of the project.
-$#
-$# If you don't already have 'awk', or the version of awk you have seems not
-$# to work, download Brian Kernighan's awk (Brian Kernighan is the author of
-$# awk.)  You can find source code and a built executable (called awk95.exe)
-$# here:
-$#
-$#     http://www.cs.princeton.edu/~bwk/btl.mirror/
-$#
-$# The executable works just fine.
-$#
-$# If build issues errors after a change to pngconfig.dfa you have entered
-$# inconsistent feature requests, or even malformed requests, in
-$# pngconfig.dfa.  The error messages from awk should be comprehensible, but
-$# if not simply go back to the start (nothing but comments in this file) and
-$# enter configuration lines one by one until one produces an error.  (Or, of
-$# course, do the standard binary chop.)
-$#
-$# You need to rebuild everything after a change to pnglibconf.dfa - i.e. you
-$# must do Actions/Mark All Targets for Remake.  This is because the compiler
-$# generated dependency information (as of OpenWatcom 1.9) does not record the
-$# dependency on pnglibconf.h correctly.
-$#
-$# If awk isn't set then this file is bypassed.  If you just want the standard
-$# configuration it is automatically produced from the distributed version
-$# (scripts\pnglibconf.h.prebuilt) by editting PNG_API_RULE to 2 (to force use
-$# of the OpenWatcom library calling convention.)
-$#
-<<
-
-clean:: .symbolic
- $(DELETE) ..\..\pnglibconf.h pnglibconf.* dfn.c *.out pngconfig.inf
- $(DELETE) *.obj *.mbr *.sym *.err *.pch libpng.mk
- $(DELETE) libpng.lib libpng.lbr libpng.lb1 libpng.cbr libpng.mk1
- $(DELETE) pngtest.exe pngtest.map pngtest.lk1 pngtest.mk1
- $(DELETE) pngvalid.exe pngvalid.map pngvalid.lk1 pngvalid.mk1
-
-distclean:: clean .symbolic
- $(DELETE) zlib.inf awk.inf config.inf pngconfig.dfa
+# This is an OpenWatcom make file which builds pnglibconf.h - the libpng
+# configuration header.  You can ignore this file if you don't need to
+# configure libpng; a default configuration will be built.
+#
+# For more information build libpng.wpj under the IDE and then read the
+# generated files:
+#
+#    config.inf: Basic configuration information for a standard build.
+#    pngconfig.dfa: Advanced configuration for non-standard libpng builds.
+#
+DELETE=rm -f
+ECHO=echo
+COPY=copy
+#
+# If your configuration needs to test compiler flags when building
+# pnglibconf.h you may need to override the following on the wmake command
+# line:
+CFLAGS=
+CC=wcl386
+CPP=$(CC) -pw0
+#
+# Read awk from the environment if set, else it can be set on the command
+# line (the default approach is to set the %awk% environment variable in the
+# IDE libpng.wpj 'before' rule - this setting is local.)
+!ifdef %awk
+AWK=$(%awk)
+!endif
+#
+# pnglibconf.h must exist in the source directory, this is the final rule
+# which copies the local built version (and this is the default target for
+# this makefile.)
+..\..\pnglibconf.h: pnglibconf.h
+ $(COPY) pnglibconf.h $@
+
+!ifdef AWK
+# CPPFLAGS should contain the options to control the result,
+# but DEFS and CFLAGS are also supported here, override
+# as appropriate
+DFNFLAGS = $(DEFS) $(CPPFLAGS) $(CFLAGS)
+
+pnglibconf.h: pnglibconf.dfn
+ $(DELETE) $@ dfn.c dfn1.out dfn2.out
+ $(ECHO) $#include "pnglibconf.dfn" >dfn.c
+ $(CPP) $(DFNFLAGS) dfn.c >dfn1.out
+ $(AWK) -f << dfn1.out >dfn2.out
+/^.*PNG_DEFN_MAGIC-.*-PNG_DEFN_END.*$$/{
+ sub(/^.*PNG_DEFN_MAGIC-/, "")
+ sub(/ *-PNG_DEFN_END.*$$/, "")
+ gsub(/ *@@@ */, "")
+ print
+}
+<<
+ $(COPY) dfn2.out $@
+ @type << >pngconfig.inf
+This is a locally configurable build of libpng.lib; for configuration
+instructions consult and edit projects/openwatcom/pngconfig.dfa
+<<
+ $(DELETE) dfn.c dfn1.out dfn2.out
+
+pnglibconf.dfn: ..\..\scripts\pnglibconf.dfa ..\..\scripts\options.awk pngconfig.dfa ..\..\pngconf.h
+ $(DELETE) $@ dfn1.out dfn2.out
+ $(AWK) -f ..\..\scripts\options.awk out=dfn1.out version=search ..\..\pngconf.h ..\..\scripts\pnglibconf.dfa pngconfig.dfa $(DFA_XTRA) 1>&2
+ $(AWK) -f ..\..\scripts\options.awk out=dfn2.out dfn1.out 1>&2
+ $(COPY) dfn2.out $@
+ $(DELETE) dfn1.out dfn2.out
+
+!else
+# The following lines are used to copy scripts\pnglibconf.h.prebuilt and make
+# the required change to the calling convention.
+#
+# By default libpng is built to use the __cdecl calling convention on
+# Windows.  This gives compatibility with MSVC and GCC.  Unfortunately it
+# does not work with OpenWatcom because OpenWatcom implements longjmp using
+# the __watcall convention (compared with both MSVC and GCC which use __cdecl
+# for library functions.)
+#
+# Thus the default must be changed to build on OpenWatcom and, once changed,
+# the result will not be compatible with applications built using other
+# compilers (in fact attempts to build will fail at compile time.)
+#
+pnglibconf.h: ..\..\scripts\pnglibconf.h.prebuilt .existsonly
+ @$(ECHO) .
+ @$(ECHO) .
+ @$(ECHO) $$(AWK) NOT AVAILABLE: COPYING scripts\pnglibconf.h.prebuilt
+ @$(ECHO) .
+ @$(ECHO) .
+ vi -q -k ":1,$$s/PNG_API_RULE 0$$/PNG_API_RULE 2/\n:w! $@\n:q!\n" ..\..\scripts\pnglibconf.h.prebuilt
+ @$(ECHO) .
+ @$(ECHO) .
+ @$(ECHO) YOU HAVE A DEFAULT CONFIGURATION BECAUSE YOU DO NOT HAVE AWK!
+ @$(ECHO) .
+ @$(ECHO) .
+ @type << >pngconfig.inf
+This is the default configuration of libpng.lib, if you wish to
+change the configuration please consult the instructions in
+projects/owatcom/pngconfig.dfa.
+<<
+
+!endif
+
+# Make the default files
+defaults: .symbolic
+ @$(COPY) << config.inf
+$# The libpng project is incompletely configured.  To complete configuration
+$# please complete the following steps:
+$#
+$#   1) Edit the 'before' rule of libpng.wpj (from the IDE) to define the
+$#      locations of the zlib include file zlib.h and the built zlib library,
+$#      zlib.lib.
+$#
+$#   2) If you want to change libpng to a non-standard configuration also
+$#      change the definition of 'awk' in the before rule to the name of your
+$#      awk command.  For more instructions on configuration read
+$#      pngconfig.dfa.
+$#
+$#   3) Delete this file (config.inf).
+<<
+ @$(COPY) << pngconfig.dfa
+$# pngconfig.dfa: this file contains configuration options for libpng.
+$# If emtpy the standard configuration will be built.  For this file to be
+$# used a working version of the program 'awk' is required and the program
+$# must be identified in the 'before' rule of the project.
+$#
+$# If you don't already have 'awk', or the version of awk you have seems not
+$# to work, download Brian Kernighan's awk (Brian Kernighan is the author of
+$# awk.)  You can find source code and a built executable (called awk95.exe)
+$# here:
+$#
+$#     http://www.cs.princeton.edu/~bwk/btl.mirror/
+$#
+$# The executable works just fine.
+$#
+$# If build issues errors after a change to pngconfig.dfa you have entered
+$# inconsistent feature requests, or even malformed requests, in
+$# pngconfig.dfa.  The error messages from awk should be comprehensible, but
+$# if not simply go back to the start (nothing but comments in this file) and
+$# enter configuration lines one by one until one produces an error.  (Or, of
+$# course, do the standard binary chop.)
+$#
+$# You need to rebuild everything after a change to pnglibconf.dfa - i.e. you
+$# must do Actions/Mark All Targets for Remake.  This is because the compiler
+$# generated dependency information (as of OpenWatcom 1.9) does not record the
+$# dependency on pnglibconf.h correctly.
+$#
+$# If awk isn't set then this file is bypassed.  If you just want the standard
+$# configuration it is automatically produced from the distributed version
+$# (scripts\pnglibconf.h.prebuilt) by editting PNG_API_RULE to 2 (to force use
+$# of the OpenWatcom library calling convention.)
+$#
+<<
+
+clean:: .symbolic
+ $(DELETE) ..\..\pnglibconf.h pnglibconf.* dfn.c *.out pngconfig.inf
+ $(DELETE) *.obj *.mbr *.sym *.err *.pch libpng.mk
+ $(DELETE) libpng.lib libpng.lbr libpng.lb1 libpng.cbr libpng.mk1
+ $(DELETE) pngtest.exe pngtest.map pngtest.lk1 pngtest.mk1
+ $(DELETE) pngvalid.exe pngvalid.map pngvalid.lk1 pngvalid.mk1
+
+distclean:: clean .symbolic
+ $(DELETE) zlib.inf awk.inf config.inf pngconfig.dfa

projects/owatcom/pngtest.tgt

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projects/vstudio/WARNING

@@ -0,0 +1,23 @@
+WARNING
+=======
+Libpng 1.5 erroneously uses /MD when building debug DLL versions of libpng.
+It should use /MDd - you can change this under properties\C/C++\Code
+Generation\Runtime Library if you need to use the debug runtime for debug
+builds.  This will be changed in libpng 1.6 but is currently retained for
+compatibility with older libpng 1.5 releases.
+
+The runtime library settings for each build are as follows:
+
+           Release        Debug
+DLL         /MD            /MD
+Library     /MT            /MTd
+
+The Visual Studio 2010 defaults for a Win32 DLL or Static Library project are
+as follows:
+
+                 Release     Debug
+DLL               /MD         /MDd
+Static Library    /MD         /MDd
+
+Notice that by default static library builds use the DLL runtime, not the
+static library runtime.

projects/vstudio/libpng/libpng.vcxproj

@@ -23,8 +23,8 @@
     <Keyword>Win32Proj</Keyword>
     <RootNamespace>libpng</RootNamespace>
   </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <Import Project="$(SolutionDir)\zlib.props" />
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <CharacterSet>MultiByte</CharacterSet>

projects/vstudio/pnglibconf/pnglibconf.vcxproj

@@ -17,6 +17,7 @@
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>MultiByte</CharacterSet>
   </PropertyGroup>
+  <Import Project="$(SolutionDir)\zlib.props" />
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
   </ImportGroup>

projects/vstudio/pngtest/pngtest.vcxproj

@@ -23,8 +23,8 @@
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     <RootNamespace>pngtest</RootNamespace>
   </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <Import Project="$(SolutionDir)\zlib.props" />
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <CharacterSet>Unicode</CharacterSet>

projects/vstudio/pngvalid/pngvalid.vcxproj

@@ -23,8 +23,8 @@
     <Keyword>Win32Proj</Keyword>
     <RootNamespace>pngvalid</RootNamespace>
   </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <Import Project="$(SolutionDir)\zlib.props" />
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <CharacterSet>Unicode</CharacterSet>
@@ -204,14 +204,13 @@
     </Link>
     <CustomBuildStep>
       <Message>Executing PNG validation program</Message>
-      <Command>$(OutDir)pngvalid.exe ..\..\..\pngvalid.png $(IntDir)pngout.png</Command>
       <Command>"$(OutDir)pngvalid.exe" --touch "$(IntDir)pngvalid.out"</Command>
       <Outputs>$(IntDir)pngvalid.out</Outputs>
       <Inputs>$(OutDir)pngvalid.exe</Inputs>
     </CustomBuildStep>
   </ItemDefinitionGroup>
   <ItemGroup>
-    <ClCompile Include="..\..\..\pngvalid.c" />
+    <ClCompile Include="..\..\..\contrib\libtests\pngvalid.c" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">

projects/vstudio/readme.txt

@@ -1,7 +1,7 @@
 
 VisualStudio instructions
 
-libpng version 1.5.6beta03 - September 28, 2011
+libpng version 1.5.14rc01 - January 17, 2013
 
 Copyright (c) 1998-2010 Glenn Randers-Pehrson
 
@@ -13,6 +13,14 @@ This directory  contains support for building libpng under MicroSoft
 VisualStudio 2010.  It may also work under later versions of VisualStudio.
 You should be familiar with VisualStudio before using this directory.
 
+WARNING
+=======
+Libpng 1.5 erroneously uses /MD when building debug DLL versions of libpng.
+It should use /MDd - you can change this under properties\C/C++\Code
+Generation\Runtime Library if you need to use the debug runtime for debug
+builds.  This will be changed in libpng 1.6 but is currently retained for
+compatibility with older libpng 1.5 releases.
+
 Initial preparations
 ====================
 You must enter some information in zlib.props before attempting to build

projects/vstudio/vstudio.sln

@@ -2,22 +2,22 @@ Microsoft Visual Studio Solution File, Format Version 11.00
 # Visual Studio 2010
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libpng", "libpng\libpng.vcxproj", "{D6973076-9317-4EF2-A0B8-B7A18AC0713E}"
 	ProjectSection(ProjectDependencies) = postProject
-		{64CE4900-97EA-2DD5-4226-F2E36FFF2867} = {64CE4900-97EA-2DD5-4226-F2E36FFF2867}
+		{60F89955-91C6-3A36-8000-13C592FEC2DF} = {60F89955-91C6-3A36-8000-13C592FEC2DF}
 		{EB33566E-DA7F-4D28-9077-88C0B7C77E35} = {EB33566E-DA7F-4D28-9077-88C0B7C77E35}
 	EndProjectSection
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "pngtest", "pngtest\pngtest.vcxproj", "{228BA965-50D5-42B2-8BCF-AFCC227E3C1D}"
 	ProjectSection(ProjectDependencies) = postProject
-		{64CE4900-97EA-2DD5-4226-F2E36FFF2867} = {64CE4900-97EA-2DD5-4226-F2E36FFF2867}
+		{60F89955-91C6-3A36-8000-13C592FEC2DF} = {60F89955-91C6-3A36-8000-13C592FEC2DF}
 		{EB33566E-DA7F-4D28-9077-88C0B7C77E35} = {EB33566E-DA7F-4D28-9077-88C0B7C77E35}
 		{D6973076-9317-4EF2-A0B8-B7A18AC0713E} = {D6973076-9317-4EF2-A0B8-B7A18AC0713E}
 	EndProjectSection
 EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "zlib", "zlib\zlib.vcxproj", "{64CE4900-97EA-2DD5-4226-F2E36FFF2867}"
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "zlib", "zlib\zlib.vcxproj", "{60F89955-91C6-3A36-8000-13C592FEC2DF}"
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "pngvalid", "pngvalid\pngvalid.vcxproj", "{9B36B6FE-7FC0-434F-A71F-BBEF8099F1D8}"
 	ProjectSection(ProjectDependencies) = postProject
-		{64CE4900-97EA-2DD5-4226-F2E36FFF2867} = {64CE4900-97EA-2DD5-4226-F2E36FFF2867}
+		{60F89955-91C6-3A36-8000-13C592FEC2DF} = {60F89955-91C6-3A36-8000-13C592FEC2DF}
 		{EB33566E-DA7F-4D28-9077-88C0B7C77E35} = {EB33566E-DA7F-4D28-9077-88C0B7C77E35}
 		{D6973076-9317-4EF2-A0B8-B7A18AC0713E} = {D6973076-9317-4EF2-A0B8-B7A18AC0713E}
 	EndProjectSection
@@ -48,14 +48,14 @@ Global
 		{228BA965-50D5-42B2-8BCF-AFCC227E3C1D}.Release Library|Win32.Build.0 = Release Library|Win32
 		{228BA965-50D5-42B2-8BCF-AFCC227E3C1D}.Release|Win32.ActiveCfg = Release|Win32
 		{228BA965-50D5-42B2-8BCF-AFCC227E3C1D}.Release|Win32.Build.0 = Release|Win32
-		{64CE4900-97EA-2DD5-4226-F2E36FFF2867}.Debug Library|Win32.ActiveCfg = Debug Library|Win32
-		{64CE4900-97EA-2DD5-4226-F2E36FFF2867}.Debug Library|Win32.Build.0 = Debug Library|Win32
-		{64CE4900-97EA-2DD5-4226-F2E36FFF2867}.Debug|Win32.ActiveCfg = Debug|Win32
-		{64CE4900-97EA-2DD5-4226-F2E36FFF2867}.Debug|Win32.Build.0 = Debug|Win32
-		{64CE4900-97EA-2DD5-4226-F2E36FFF2867}.Release Library|Win32.ActiveCfg = Release Library|Win32
-		{64CE4900-97EA-2DD5-4226-F2E36FFF2867}.Release Library|Win32.Build.0 = Release Library|Win32
-		{64CE4900-97EA-2DD5-4226-F2E36FFF2867}.Release|Win32.ActiveCfg = Release|Win32
-		{64CE4900-97EA-2DD5-4226-F2E36FFF2867}.Release|Win32.Build.0 = Release|Win32
+		{60F89955-91C6-3A36-8000-13C592FEC2DF}.Debug Library|Win32.ActiveCfg = Debug Library|Win32
+		{60F89955-91C6-3A36-8000-13C592FEC2DF}.Debug Library|Win32.Build.0 = Debug Library|Win32
+		{60F89955-91C6-3A36-8000-13C592FEC2DF}.Debug|Win32.ActiveCfg = Debug|Win32
+		{60F89955-91C6-3A36-8000-13C592FEC2DF}.Debug|Win32.Build.0 = Debug|Win32
+		{60F89955-91C6-3A36-8000-13C592FEC2DF}.Release Library|Win32.ActiveCfg = Release Library|Win32
+		{60F89955-91C6-3A36-8000-13C592FEC2DF}.Release Library|Win32.Build.0 = Release Library|Win32
+		{60F89955-91C6-3A36-8000-13C592FEC2DF}.Release|Win32.ActiveCfg = Release|Win32
+		{60F89955-91C6-3A36-8000-13C592FEC2DF}.Release|Win32.Build.0 = Release|Win32
 		{9B36B6FE-7FC0-434F-A71F-BBEF8099F1D8}.Debug Library|Win32.ActiveCfg = Debug Library|Win32
 		{9B36B6FE-7FC0-434F-A71F-BBEF8099F1D8}.Debug Library|Win32.Build.0 = Debug Library|Win32
 		{9B36B6FE-7FC0-434F-A71F-BBEF8099F1D8}.Debug|Win32.ActiveCfg = Debug|Win32
@@ -72,6 +72,14 @@ Global
 		{EB33566E-DA7F-4D28-9077-88C0B7C77E35}.Release Library|Win32.Build.0 = Release|Win32
 		{EB33566E-DA7F-4D28-9077-88C0B7C77E35}.Release|Win32.ActiveCfg = Release|Win32
 		{EB33566E-DA7F-4D28-9077-88C0B7C77E35}.Release|Win32.Build.0 = Release|Win32
+		{277AC57F-313B-4D06-B119-A3CDB672D2FF}.Debug Library|Win32.ActiveCfg = Debug Library|Win32
+		{277AC57F-313B-4D06-B119-A3CDB672D2FF}.Debug Library|Win32.Build.0 = Debug Library|Win32
+		{277AC57F-313B-4D06-B119-A3CDB672D2FF}.Debug|Win32.ActiveCfg = Debug|Win32
+		{277AC57F-313B-4D06-B119-A3CDB672D2FF}.Debug|Win32.Build.0 = Debug|Win32
+		{277AC57F-313B-4D06-B119-A3CDB672D2FF}.Release Library|Win32.ActiveCfg = Release Library|Win32
+		{277AC57F-313B-4D06-B119-A3CDB672D2FF}.Release Library|Win32.Build.0 = Release Library|Win32
+		{277AC57F-313B-4D06-B119-A3CDB672D2FF}.Release|Win32.ActiveCfg = Release|Win32
+		{277AC57F-313B-4D06-B119-A3CDB672D2FF}.Release|Win32.Build.0 = Release|Win32
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

projects/vstudio/zlib.props

@@ -2,7 +2,7 @@
 <!--
  * zlib.props - location of zlib source
  *
- * libpng version 1.5.6beta03 - September 28, 2011
+ * libpng version 1.5.14rc01 - January 17, 2013
  *
  * Copyright (c) 1998-2011 Glenn Randers-Pehrson
  *
@@ -33,5 +33,13 @@
 	 below:
      -->
     <ZLibSrcDir>..\..\..\..\zlib-1.2.5</ZLibSrcDir>
+
+    <!-- The following line allows compilation for an ARM target with Visual
+         Studio 2012.  Notice that this is not supported by the Visual Studio
+         2012 IDE and that the programs that result cannot be run unless they
+         signed by Microsoft.  This is therefore untested; only Microsoft can
+         test it:
+     -->
+    <WindowsSDKDesktopARMSupport>true</WindowsSDKDesktopARMSupport>
   </PropertyGroup>
 </Project>

projects/vstudio/zlib/zlib.vcxproj

@@ -34,8 +34,8 @@
   <PropertyGroup Label="Globals">
     <Keyword>Win32Proj</Keyword>
   </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <Import Project="$(SolutionDir)\zlib.props" />
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug Library|Win32'" Label="Configuration">
     <ConfigurationType>StaticLibrary</ConfigurationType>
   </PropertyGroup>

scripts/README.txt

@@ -1,9 +1,9 @@
 
-Makefiles for  libpng version 1.5.6beta03 - September 28, 2011
+Makefiles for  libpng version 1.5.14rc01 - January 17, 2013
 
 pnglibconf.h.prebuilt       =>  Stores configuration settings
  makefile.linux    =>  Linux/ELF makefile
-                       (gcc, creates libpng15.so.15.1.5.6beta03)
+                       (gcc, creates libpng15.so.15.1.5.14rc01)
  makefile.gcc      =>  Generic makefile (gcc, creates static libpng.a)
  makefile.knr      =>  Archaic UNIX Makefile that converts files with
                        ansi2knr (Requires ansi2knr.c from
@@ -15,12 +15,13 @@ pnglibconf.h.prebuilt       =>  Stores configuration settings
  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.cegcc    =>  minge32ce for Windows CE makefile (only included in the
+                       tar distributions, because it depends on "configure")
  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 libpng15.so.15.1.5.6beta03)
+                       (gcc, creates libpng15.so.15.1.5.14rc01)
  makefile.freebsd  =>  FreeBSD makefile
  makefile.gcc      =>  Generic gcc makefile
  makefile.hpgcc    =>  HPUX makefile using gcc
@@ -35,12 +36,12 @@ pnglibconf.h.prebuilt       =>  Stores configuration settings
  makefile.os2      =>  OS/2 Makefile (gcc and emx, requires libpng.def)
  makefile.sco      =>  For SCO OSr5  ELF and Unixware 7 with Native cc
  makefile.sggcc    =>  Silicon Graphics (gcc,
-                       creates libpng15.so.15.1.5.6beta03)
+                       creates libpng15.so.15.1.5.14rc01)
  makefile.sgi      =>  Silicon Graphics IRIX makefile (cc, creates static lib)
  makefile.solaris  =>  Solaris 2.X makefile (gcc,
-                       creates libpng15.so.15.1.5.6beta03)
+                       creates libpng15.so.15.1.5.14rc01)
  makefile.so9      =>  Solaris 9 makefile (gcc,
-                       creates libpng15.so.15.1.5.6beta03)
+                       creates libpng15.so.15.1.5.14rc01)
  makefile.std      =>  Generic UNIX makefile (cc, creates static libpng.a)
  makefile.sunos    =>  Sun makefile
  makefile.32sunu   =>  Sun Ultra 32-bit makefile
@@ -57,7 +58,7 @@ Other supporting scripts:
  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
- pngwin.rc         =>  Used by the visualc71 project.
+ pngwin.rc         =>  Used by the visualc71 and vstudio projects.
  pngwin.def        =>  Used by makefile.os2
  pngwin.dfn        =>  Used to maintain pngwin.def
  SCOPTIONS.ppc     =>  Used with smakefile.ppc

scripts/def.dfn

@@ -1,6 +1,6 @@
 /* def.dfn - define format of libpng.def
  *
- * Last changed in libpng version 1.5.0 [(PENDING RELEASE)]
+ * Last changed in libpng version 1.5.7 [December 15, 2011]
  * Copyright (c) 2010-2011 Glenn Randers-Pehrson
  *
  * This code is released under the libpng license.
@@ -27,12 +27,12 @@ S--E
 S-EXPORTS-E
 S-;Version 1.5.0beta58-E
 
-/* NOTE: @@@ is interpreted by the calling script as a signal to
+/* NOTE: PNG_JOIN is interpreted by the calling script as a signal to
  * join the two things on either side, so we can do symbol
  * substitution within the name, regular C ## joins the pp-tokens,
  * not their final values.
  */
 #define PNG_EXPORTA(ordinal, type, name, args, attributes)\
-	PNG_DEFN_MAGIC- SYMBOL_PREFIX @@@ name-PNG_DEFN_END
+	PNG_DEFN_MAGIC- SYMBOL_PREFIX PNG_JOIN name-PNG_DEFN_END
 
 #include "../png.h"

scripts/libpng-config-head.in

@@ -11,7 +11,7 @@
 
 # Modeled after libxml-config.
 
-version=1.5.6beta03
+version=1.5.14rc01
 prefix=""
 libdir=""
 libs=""

scripts/libpng.pc.in

@@ -5,6 +5,6 @@ includedir=@includedir@/libpng15
 
 Name: libpng
 Description: Loads and saves PNG files
-Version: 1.5.6beta03
+Version: 1.5.14rc01
 Libs: -L${libdir} -lpng15
 Cflags: -I${includedir}

scripts/makefile.cegcc

@@ -23,7 +23,7 @@
 
 VERMAJ = 1
 VERMIN = 5
-VERMIC = 6
+VERMIC = 14
 VER = $(VERMAJ).$(VERMIN).$(VERMIC)
 NAME = libpng
 PACKAGE = $(NAME)-$(VER)

scripts/makefile.darwin

@@ -15,10 +15,8 @@ prefix=/usr/local
 exec_prefix=$(prefix)
 
 # Where the zlib library and include files are located
-#ZLIBLIB=/usr/local/lib
-#ZLIBINC=/usr/local/include
-ZLIBLIB=../zlib
-ZLIBINC=../zlib
+ZLIBLIB=/usr/lib
+ZLIBINC=/usr/include
 
 # Library name:
 LIBNAME = libpng15
@@ -37,7 +35,7 @@ MKDIR_P=mkdir -p
 LN_SF=ln -sf
 RANLIB=ranlib
 RM_F=/bin/rm -f
-ARCH="-arch i386 -arch x86_64"
+ARCH=-arch ppc -arch i386 -arch x86_64
 
 # CFLAGS=-I$(ZLIBINC) -W -Wall -O3 -funroll-loops
 CFLAGS=-I$(ZLIBINC) -W -Wall -O -funroll-loops $(ARCH)
@@ -107,7 +105,7 @@ $(LIBSOMAJ): $(OBJSDLL)
 	$(CC) -dynamiclib \
 	 -install_name $(LIBPATH)/$(LIBSOMAJ) \
 	 -current_version 15 -compatibility_version 15 \
-	 -o $(LIBSOMAJ) \
+ 	 $(ARCH) -o $(LIBSOMAJ) \
 	 $(OBJSDLL) -L$(ZLIBLIB) -lz
 
 pngtest: pngtest.o $(LIBSO)
@@ -136,10 +134,10 @@ install-static: install-headers libpng.a
 install-shared: install-headers $(LIBSOMAJ) libpng.pc
 	-@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
 	-@$(RM_F) $(DL)/$(LIBSO)
-	-@$(RM_F) $(DL)/$(LIBSOREL)
+	-@$(RM_F) $(DL)/$(LIBSOMAJ)
 	-@$(RM_F) $(DL)/$(OLDSO)
-	cp $(LIBSOMAJ) $(DL)/$(LIBSOREL)
-	chmod 755 $(DL)/$(LIBSOREL)
+	cp $(LIBSOMAJ) $(DL)
+	chmod 755 $(DL)/$(LIBSOMAJ)
 	(cd $(DL); \
 	$(LN_SF) $(LIBSOREL) $(LIBSO); \
 	$(LN_SF) $(LIBSO) $(OLDSO))

scripts/makefile.freebsd

@@ -11,8 +11,8 @@ SHLIB_VER?=     15
 LIB=		png
 SHLIB_MAJOR=	${SHLIB_VER}
 SHLIB_MINOR=	0
-NOPROFILE=	YES
-NOOBJ=          YES
+NO_PROFILE=	YES
+NO_OBJ=          YES
 
 # where make install puts libpng.a and png.h
 DESTDIR=	${PREFIX}
@@ -25,7 +25,10 @@ MANDIR=		/man/man
 SYMLINKS=       libpng/png.h ${INCSDIR}/../png.h \
 		libpng/pngconf.h ${INCSDIR}/../pngconf.h \
 		libpng/pnglibconf.h ${INCSDIR}/../pnglibconf.h
+
 LDADD+=         -lm -lz
+#LDADD+=         -lm -lz -lssp_nonshared   # for OSVERSION >= 800000 ?
+
 DPADD+=         ${LIBM} ${LIBZ}
 
 CFLAGS+= -I.

scripts/makefile.linux

@@ -10,7 +10,7 @@
 # Library name:
 LIBNAME = libpng15
 PNGMAJ = 15
-RELEASE = 6
+RELEASE = 14
 
 # Shared library names:
 LIBSO=$(LIBNAME).so
@@ -236,4 +236,4 @@ pngwtran.o pngwtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pn
 pngwutil.o pngwutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
 pngpread.o pngpread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
 
-pngtest.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h pnglibconf.h

scripts/makefile.msys

@@ -0,0 +1,204 @@
+# makefile for libpng using MSYS/gcc (shared, static library)
+# Copyright (C) 2012 Glenn Randers-Pehrson and Christopher M. Wheeler
+#
+# Portions taken from makefile.linux:
+# Copyright (C) 1998, 1999, 2002, 2006, 2008, 2010-2011 Greg Roelofs and
+# Glenn Randers-Pehrson
+# Copyright (C) 2000 Cosmin Truta
+# Copyright (C) 1996, 1997 Andreas Dilger
+# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
+#
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+# # # # # # # # # # # # # # # # #
+prefix=/usr/local
+exec_prefix=$(prefix)
+
+# Library name:
+LIBNAME = libpng15
+PNGMAJ = 15
+RELEASE = 14
+
+# Shared library names:
+LIBSO=$(LIBNAME).dll
+LIBSOMAJ=$(LIBNAME).dll.$(PNGMAJ)
+LIBSOREL=$(PNGMAJ).$(RELEASE)
+OLDSO=libpng.dll
+
+# Where the zlib library and include files are located.
+#ZLIBLIB=../zlib
+#ZLIBINC=../zlib
+ZLIBLIB=/usr/local/lib
+ZLIBINC=/usr/local/include
+
+# Compiler, linker, lib and other tools
+CC = gcc
+LD = $(CC)
+AR_RC = ar rcs
+RANLIB = ranlib
+RM_F = rm -rf
+MKDIR_P=mkdir -p
+LN_SF=ln -sf
+
+#ARCH = -march=pentium3
+#ARCH = -march=i686
+ARCH = 
+CDEBUG = -g -DPNG_DEBUG=5
+LDDEBUG =
+CRELEASE = -O2
+LDRELEASE = -s
+#CFLAGS = -W -Wall $(CDEBUG)
+CFLAGS = -W -Wall $(CRELEASE) $(ARCH)
+#LDFLAGS = $(LDDEBUG)
+LDFLAGS = $(LDRELEASE)
+LIBS = -lz -lm
+
+# File extensions
+O=.o
+A=.a
+EXE=.exe
+
+INCPATH=$(prefix)/include
+LIBPATH=$(exec_prefix)/lib
+MANPATH=$(prefix)/man
+BINPATH=$(exec_prefix)/bin
+
+# override DESTDIR= on the make install command line to easily support
+# installing into a temporary location.  Example:
+#
+#    make install DESTDIR=/tmp/build/libpng
+#
+# If you're going to install into a temporary location
+# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
+# you execute make install.
+
+DESTDIR=
+
+DB=$(DESTDIR)$(BINPATH)
+DI=$(DESTDIR)$(INCPATH)
+DL=$(DESTDIR)$(LIBPATH)
+DM=$(DESTDIR)$(MANPATH)
+
+# Variables
+OBJS =  png$(O) pngerror$(O) pngget$(O) pngmem$(O) pngpread$(O) \
+	pngread$(O) pngrio$(O) pngrtran$(O) pngrutil$(O) pngset$(O) \
+	pngtrans$(O) pngwio$(O) pngwrite$(O) pngwtran$(O) pngwutil$(O)
+
+# Targets
+all: static shared
+
+# see scripts/pnglibconf.mak for more options
+pnglibconf.h: scripts/pnglibconf.h.prebuilt
+	cp scripts/pnglibconf.h.prebuilt $@
+
+.c$(O):
+	$(CC) -c $(CFLAGS) -I$(ZLIBINC) $<
+
+static: libpng$(A) pngtest$(EXE)
+
+shared: $(LIBSOMAJ)
+	$(CC) -shared -Wl,-soname,$(LIBSOMAJ) -o $(LIBSO)
+
+$(LIBSO): $(LIBSOMAJ)
+	$(LN_SF) $(LIBSOMAJ) $(LIBSO)
+
+$(LIBSOMAJ):
+	$(CC) -shared -Wl,-soname,$(LIBSOMAJ) -o $(LIBSOMAJ)
+
+libpng$(A): $(OBJS)
+	$(AR_RC) $@ $(OBJS)
+	$(RANLIB) $@
+
+install-headers: png.h pngconf.h pnglibconf.h
+	-@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
+	-@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
+	cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
+	-@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
+	-@$(RM_F) $(DI)/libpng
+	(cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
+
+install-static: install-headers libpng.a
+	-@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+	cp libpng.a $(DL)/$(LIBNAME).a
+	-@$(RM_F) $(DL)/libpng.a
+	(cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
+
+libpng.pc:
+	cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+	-e s!@exec_prefix@!$(exec_prefix)! \
+	-e s!@libdir@!$(LIBPATH)! \
+	-e s!@includedir@!$(INCPATH)! \
+	-e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc
+
+libpng-config:
+	( cat scripts/libpng-config-head.in; \
+	echo prefix=\"$(prefix)\"; \
+	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
+	echo L_opts=\"-L$(LIBPATH)\"; \
+	echo R_opts=\"-Wl,-rpath,$(LIBPATH)\"; \
+	echo libs=\"-lpng15 -lz -lm\"; \
+	cat scripts/libpng-config-body.in ) > libpng-config
+
+install-shared: install-headers $(LIBSOMAJ) libpng.pc
+	-@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
+	-@$(RM_F) $(DL)/$(LIBSO)
+	-@$(RM_F) $(DL)/$(OLDSO)
+	cp $(LIBSO) $(DL)/$(LIBSOREL)
+	(cd $(DL); \
+	$(LN_SF) $(LIBSOREL) $(LIBSO); \
+	$(LN_SF) $(LIBSO) $(OLDSO))
+
+	-@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
+	-@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
+	-@$(RM_F) $(DL)/pkgconfig/libpng.pc
+	cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
+	(cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
+
+install-man: libpng.3 libpngpf.3 png.5
+	-@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
+	-@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
+	-@$(RM_F) $(DM)/man3/libpng.3
+	-@$(RM_F) $(DM)/man3/libpngpf.3
+	cp libpng.3 $(DM)/man3
+	cp libpngpf.3 $(DM)/man3
+	-@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
+	-@$(RM_F) $(DM)/man5/png.5
+	cp png.5 $(DM)/man5
+
+install-config: libpng-config
+	-@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
+	-@$(RM_F) $(DB)/libpng-config
+	-@$(RM_F) $(DB)/$(LIBNAME)-config
+	cp libpng-config $(DB)/$(LIBNAME)-config
+	(cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
+
+install: install-static install-shared install-man install-config
+
+test: pngtest$(EXE)
+	./pngtest$(EXE)
+
+pngtest$(EXE): pngtest$(O) libpng$(A)
+	$(LD) $(LDFLAGS) -L$(ZLIBLIB) -o $@ pngtest$(O) libpng$(A) $(LIBS)
+
+clean:
+	$(RM_F) *$(O) libpng$(A) pngtest$(EXE) pngout.png pnglibconf.h $(LIBSO) \
+	$(LIBSOMAJ) libpng-config
+
+png$(O):      png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngerror$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngget$(O):   png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngmem$(O):   png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngpread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngread$(O):  png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrio$(O):   png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngrutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngset$(O):   png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngtrans$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwio$(O):   png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwrite$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+pngwutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
+
+pngtest$(O):  png.h pngconf.h pnglibconf.h

scripts/makefile.ne12bsd

@@ -17,7 +17,7 @@ INCSDIR=${LOCALBASE}/include/libpng15
 
 LIB=	png15
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.5.6beta03
+SHLIB_MINOR=	1.5.14rc01
 SRCS=	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

scripts/makefile.netbsd

@@ -17,7 +17,7 @@ INCSDIR=${LOCALBASE}/include
 
 LIB=	png
 SHLIB_MAJOR=	15
-SHLIB_MINOR=	1.5.6beta03
+SHLIB_MINOR=	1.5.14rc01
 SRCS=	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

scripts/makefile.openbsd

@@ -11,7 +11,7 @@ LIBDIR=	${PREFIX}/lib
 MANDIR= ${PREFIX}/man/cat
 
 SHLIB_MAJOR=	15
-SHLIB_MINOR=	1.5.6beta03
+SHLIB_MINOR=	1.5.14rc01
 
 LIB=	png
 SRCS=	png.c pngerror.c pngget.c pngmem.c pngpread.c \

scripts/makefile.std

@@ -50,9 +50,9 @@ all: libpng.a pngtest
 
 # The standard pnglibconf.h exists as scripts/pnglibconf.h.prebuilt,
 # copy this if the following doesn't work.
-pnglibconf.dfn: scripts/pnglibconf.dfa scripts/options.awk
+pnglibconf.dfn: scripts/pnglibconf.dfa scripts/options.awk pngconf.h
 	$(RM_F) $@ dfn?.out
-	$(AWK) -f scripts/options.awk out=dfn1.out\
+	$(AWK) -f scripts/options.awk out=dfn1.out version=search pngconf.h\
 	    scripts/pnglibconf.dfa $(DFA_XTRA) 1>&2
 	$(AWK) -f scripts/options.awk out=dfn2.out dfn1.out 1>&2
 	cp dfn2.out $@
@@ -62,9 +62,9 @@ pnglibconf.h: pnglibconf.dfn
 	$(RM_F) $@ dfn.c dfn?.out
 	$(ECHO) '#include "pnglibconf.dfn"' >dfn.c
 	$(CPP) $(DFNFLAGS) dfn.c >dfn1.out
-	$(SED) -n -e 's|^.*PNG_DEFN_MAGIC-\(.*\)-PNG_DEFN_END.*$$|\1|p'\
+	$(SED) -n -e 's|^.*PNG_DEFN_MAGIC *-\(.*\)- *PNG_DEFN_END.*$$|\1|p'\
 	    dfn1.out >dfn2.out
-	$(SED) -e 's| *@@@ *||g' -e 's| *$$||' dfn2.out >dfn3.out
+	$(SED) -e 's| *PNG_JOIN *||g' -e 's| *$$||' dfn2.out >dfn3.out
 	cp dfn3.out $@
 	$(RM_F) dfn.c dfn?.out
 

scripts/options.awk

@@ -1,7 +1,7 @@
 #!/bin/awk -f
 # scripts/options.awk - library build configuration control
 #
-# last changed in libpng version 1.5.0 - January 6, 2011
+# last changed in libpng version 1.5.7 - December 15, 2011
 #
 # Copyright (c) 1998-2011 Glenn Randers-Pehrson
 #
@@ -32,16 +32,19 @@
 BEGIN{
    out="/dev/null"              # intermediate, preprocessed, file
    pre=-1                       # preprocess (first line)
+   version="libpng version unknown" # version information
+   version_file=""              # where to find the version
    err=0                        # in-line exit sets this
    start="PNG_DEFN_MAGIC-"      # Arbitrary start
    end="-PNG_DEFN_END"          # Arbitrary end
-   cx= "/@@@*"                  # Open C comment for output file
+   ct="PNG_JOIN"                # Join two tokens
+   cx= "/" ct "*"               # Open C comment for output file
    comment=start cx             # Comment start
    cend="*/" end                # Comment end
-   def=start "#define PNG_@@@"  # Arbitrary define
-   sup="@@@_SUPPORTED" end      # end supported option
-   und=comment "#undef PNG_@@@" # Unsupported option
-   une="@@@_SUPPORTED" cend     # end unsupported option
+   def=start "#define PNG_" ct  # Arbitrary define
+   sup=ct "_SUPPORTED 1" end    # end supported option
+   und=comment "#undef PNG_" ct # Unsupported option
+   une=ct "_SUPPORTED" cend     # end unsupported option
    error=start "ERROR:"         # error message
 
    # Variables
@@ -85,6 +88,29 @@ pre == -1{
    }
 }
 
+# While pre-processing if version is set to "search" look for a version string
+# in the following file.
+pre && version == "search" && version_file == ""{
+   version_file = FILENAME
+}
+
+pre && version == "search" && version_file != FILENAME{
+   print "version string not found in", version_file
+   err = 1
+   exit 1
+}
+
+pre && version == "search" && $0 ~ /^ \* libpng version/{
+   version = substr($0, 4)
+   gsub(/\./, " PNG_JOIN . PNG_JOIN", version)
+   print "version =", version >out
+   next
+}
+
+pre && FILENAME == version_file{
+   next
+}
+
 # variable=value
 #   Sets the given variable to the given value (the syntax is fairly
 #   free form, except for deb (you are expected to understand how to
@@ -94,6 +120,11 @@ pre == -1{
 #   rest of the actions, so the variable settings happen during
 #   preprocessing but are recorded in the END action too.  This
 #   allows them to be set on the command line too.
+$0 ~ /^[ 	]*version[ 	]*=/{
+   sub(/^[  ]*version[  ]*=[  ]*/, "")
+   version = $0
+   next
+}
 $0 ~ /^[ 	]*everything[ 	=]*off[ 	]*$/{
    everything = "off"
    next
@@ -165,6 +196,19 @@ $1 == "com"{
    next
 }
 
+# version
+#   Inserts a version comment
+$1 == "version" && NF == 1{
+   if (version == "") {
+      print "ERROR: no version string set"
+      err = 1 # prevent END{} running
+      exit 1
+   }
+
+   print comment, version, cend >out
+   next
+}
+
 # file output input protect
 #   Informational: the official name of the input file (without
 #   make generated local directories), the official name of the

scripts/pnglibconf.dfa

@@ -6,7 +6,7 @@
 #
 com pnglibconf.h - library build configuration
 com
-com libpng version 1.5.3 -  July 7, 2011
+version
 com
 com Copyright (c) 1998-2011 Glenn Randers-Pehrson
 com
@@ -21,13 +21,13 @@ file pnglibconf.h scripts/pnglibconf.dfa PNGLCONF_H
 # C compiler to generate 'pnglibconf.h' - a list of all the
 # configuration options.  The file lists the various options
 # that can *only* be specified during the libpng build;
-# pnglibconf.h freezes the definitons selected for the specific
+# pnglibconf.h freezes the definitions selected for the specific
 # build.
 #
 # The syntax is detailed in scripts/options.awk, this is a summary
 # only:
 #
-# setting <name> [requires ...] [default]
+# setting <name> [default]
 #    #define PNG_<name> <value>  /* value comes from current setting */
 # option <name> [requires ...] [if ...] [enables ...] [disabled]
 #    #define PNG_<name>_SUPPORTED if the requirements are met and
@@ -266,20 +266,22 @@ option SET_USER_LIMITS enables SET_CHUNK_CACHE_LIMIT
 
 option SET_USER_LIMITS enables SET_CHUNK_MALLOC_LIMIT
 
-# Added at libpng-1.0.16 and 1.2.6.  To accept all valid PNGs no matter
-# how large, set these two limits to 0x7fffffff
+# Libpng limits.
+#
+# If these settings are *not* set libpng will not limit the size of
+# images or the size of data in ancilliary chunks.  This does lead to
+# security issues if PNG files come from untrusted sources.
+setting USER_WIDTH_MAX
+setting USER_HEIGHT_MAX
+setting USER_CHUNK_CACHE_MAX
+setting USER_CHUNK_MALLOC_MAX
 
-setting USER_WIDTH_MAX default 1000000
-setting USER_HEIGHT_MAX default 1000000
-
-# Added at libpng-1.2.43.  To accept all valid PNGs no matter
-# how large, set these two limits to 0.
-
-setting USER_CHUNK_CACHE_MAX default 0
-
-# Added at libpng-1.2.43
-
-setting USER_CHUNK_MALLOC_MAX default 0
+# To default all these settings to values that are large but probably
+# safe turn the SAFE_LIMITS option on; this will cause the value in
+# pngpriv.h to be used.  Individual values can also be set, simply set
+# them in pngusr.dfa with '@#define PNG_setting value' lines.
+option SAFE_LIMITS enables USER_LIMITS disabled
+= SAFE_LIMITS SAFE_LIMITS
 
 # All of the following options relate to code capabilities for
 # processing image data before creating a PNG or after reading one.
@@ -296,7 +298,7 @@ option READ enables READ_INTERLACING
 # processing after that has happened.  You need to be sure to enable
 # READ_SCALE_16_TO_8 or READ_STRIP_16_TO_8 when you disable READ_16BIT for
 # this to work properly.  You should disable the other option if you need to
-# ensure a particular convertion (otherwise the app can chose.)
+# ensure a particular conversion (otherwise the app can chose.)
 
 option READ_16BIT requires READ enables 16BIT
 
@@ -576,3 +578,13 @@ option WRITE_COMPRESSED_TEXT enables WRITE_TEXT
 # leave the row_pointers member out of the info structure.
 
 option INFO_IMAGE
+
+# added at libpng-1.5.10
+# Turn this off to disable warning about invalid palette index and
+# leave the num_palette_max member out of the png structure.
+
+option CHECK_FOR_INVALID_INDEX enables READ_CHECK_FOR_INVALID_INDEX
+option CHECK_FOR_INVALID_INDEX enables WRITE_CHECK_FOR_INVALID_INDEX
+option READ_CHECK_FOR_INVALID_INDEX requires READ CHECK_FOR_INVALID_INDEX
+option WRITE_CHECK_FOR_INVALID_INDEX requires WRITE CHECK_FOR_INVALID_INDEX
+

scripts/pnglibconf.h.prebuilt

@@ -3,9 +3,9 @@
 
 /* pnglibconf.h - library build configuration */
 
-/* libpng version 1.5.4 - last changed on June 22, 2011 */
+/* Libpng 1.5.14rc01 - January 17, 2013 */
 
-/* Copyright (c) 1998-2011 Glenn Randers-Pehrson */
+/* Copyright (c) 1998-2012 Glenn Randers-Pehrson */
 
 /* This code is released under the libpng license. */
 /* For conditions of distribution and use, see the disclaimer */
@@ -31,10 +31,6 @@
 #define PNG_QUANTIZE_GREEN_BITS 5
 #define PNG_QUANTIZE_RED_BITS 5
 #define PNG_sCAL_PRECISION 5
-#define PNG_USER_CHUNK_CACHE_MAX 0
-#define PNG_USER_CHUNK_MALLOC_MAX 0
-#define PNG_USER_HEIGHT_MAX 1000000
-#define PNG_USER_WIDTH_MAX 1000000
 #define PNG_WEIGHT_SHIFT 8
 #define PNG_ZBUF_SIZE 8192
 /* end of settings */
@@ -45,6 +41,7 @@
 #define PNG_bKGD_SUPPORTED
 #define PNG_BUILD_GRAYSCALE_PALETTE_SUPPORTED
 #define PNG_CHECK_cHRM_SUPPORTED
+#define PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED
 #define PNG_cHRM_SUPPORTED
 #define PNG_CONSOLE_IO_SUPPORTED
 #define PNG_CONVERT_tIME_SUPPORTED
@@ -74,6 +71,7 @@
 #define PNG_READ_BACKGROUND_SUPPORTED
 #define PNG_READ_BGR_SUPPORTED
 #define PNG_READ_bKGD_SUPPORTED
+#define PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED
 #define PNG_READ_cHRM_SUPPORTED
 #define PNG_READ_COMPOSITE_NODIV_SUPPORTED
 #define PNG_READ_COMPRESSED_TEXT_SUPPORTED
@@ -145,6 +143,7 @@
 #define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
 #define PNG_WRITE_BGR_SUPPORTED
 #define PNG_WRITE_bKGD_SUPPORTED
+#define PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED
 #define PNG_WRITE_cHRM_SUPPORTED
 #define PNG_WRITE_COMPRESSED_TEXT_SUPPORTED
 #define PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED

scripts/pnglibconf.mak

@@ -35,18 +35,19 @@ pnglibconf.h: pnglibconf.dfn
 	$(ECHO) '#include "pnglibconf.dfn"' >dfn.c
 	$(CPP) $(DFNFLAGS) dfn.c >dfn1.out
 	$(ECHO) "If 'cpp -e' crashes try /lib/cpp (e.g. CPP='/lib/cpp')" >&2
-	$(SED) -n -e 's|^.*PNG_DEFN_MAGIC-\(.*\)-PNG_DEFN_END.*$$|\1|p'\
+	$(SED) -n -e 's|^.*PNG_DEFN_MAGIC *-\(.*\)- *PNG_DEFN_END.*$$|\1|p'\
 	    dfn1.out >dfn2.out
-	$(SED) -e 's| *@@@ *||g' -e 's| *$$||' dfn2.out >dfn3.out
+	$(SED) -e 's| *PNG_JOIN *||g' -e 's| *$$||' dfn2.out >dfn3.out
 	$(COPY) dfn3.out $@
 	$(DELETE) dfn.c dfn1.out dfn2.out dfn3.out
 
-pnglibconf.dfn: $(srcdir)/scripts/pnglibconf.dfa $(srcdir)/scripts/options.awk
+pnglibconf.dfn: $(srcdir)/scripts/pnglibconf.dfa $(srcdir)/scripts/options.awk $(srcdir)/pngconf.h
 	$(DELETE) $@ dfn1.out dfn2.out
 	$(ECHO) "Calling $(AWK) from scripts/pnglibconf.mak" >&2
 	$(ECHO) "If 'awk' crashes try a better awk (e.g. AWK='nawk')" >&2
-	$(AWK) -f $(srcdir)/scripts/options.awk out=dfn1.out\
-	    $(srcdir)/scripts/pnglibconf.dfa $(DFA_XTRA) 1>&2
+	$(AWK) -f $(srcdir)/scripts/options.awk out=dfn1.out version=search\
+		$(srcdir)/pngconf.h $(srcdir)/scripts/pnglibconf.dfa\
+		$(DFA_XTRA) 1>&2
 	$(AWK) -f $(srcdir)/scripts/options.awk out=dfn2.out dfn1.out 1>&2
 	$(COPY) dfn2.out $@
 	$(DELETE) dfn1.out dfn2.out

scripts/sym.dfn

@@ -10,6 +10,6 @@
  */
 
 #define PNG_EXPORTA(ordinal, type, name, args, attributes)\
-	PNG_DEFN_MAGIC-SYMBOL_PREFIX @@@ name-PNG_DEFN_END
+	PNG_DEFN_MAGIC-SYMBOL_PREFIX PNG_JOIN name-PNG_DEFN_END
 
 #include "../png.h"

scripts/symbols.def

@@ -5,7 +5,7 @@
 LIBRARY
 
 EXPORTS
-;Version 1.5.6beta03
+;Version 1.5.14rc01
  png_access_version_number @1
  png_set_sig_bytes @2
  png_sig_cmp @3
@@ -239,3 +239,4 @@ EXPORTS
  png_get_cHRM_XYZ_fixed @231
  png_set_cHRM_XYZ @232
  png_set_cHRM_XYZ_fixed @233
+ png_set_check_for_invalid_index @234