[libpng12] Imported from libpng-1.2.51.tar

from libpng-1.4.6.

ANNOUNCE

@@ -1,76 +1,71 @@
 
-Libpng 1.0.52rc01 - December 23, 2009
+Libpng 1.2.51 - February 6, 2014
 
-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.
+This is a public release of libpng, intended for use in production codes.
 
 Files available for download:
 
 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script
 
-   libpng-1.0.52rc01.tar.xz (LZMA-compressed, recommended)
-   libpng-1.0.52rc01.tar.gz
-   libpng-1.0.52rc01.tar.bz2
+   libpng-1.2.51.tar.xz (LZMA-compressed, recommended)
+   libpng-1.2.51.tar.gz
+   libpng-1.2.51.tar.bz2
 
 Source files with LF line endings (for Unix/Linux) without the
 "configure" script
 
-   libpng-1.0.52rc01-no-config.tar.xz (LZMA-compressed, recommended)
-   libpng-1.0.52rc01-no-config.tar.gz
-   libpng-1.0.52rc01-no-config.tar.bz2
+   libpng-1.2.51-no-config.tar.xz (LZMA-compressed, recommended)
+   libpng-1.2.51-no-config.tar.gz
+   libpng-1.2.51-no-config.tar.bz2
 
 Source files with CRLF line endings (for Windows), without the
 "configure" script
 
-   lp1052r01.zip
-   lp1052r01.7z
-   lp1052r01.tar.bz2
+   lpng1251.zip
+   lpng1251.7z
+   lpng1251.tar.bz2
 
 Project files
 
-   libpng-1.0.52rc01-project-netware.zip
-   libpng-1.0.52rc01-project-wince.zip
+   libpng-1.2.51-project-netware.zip
+   libpng-1.2.51-project-wince.zip
 
 Other information:
 
-   libpng-1.0.52rc01-README.txt
-   libpng-1.0.52rc01-KNOWNBUGS.txt
-   libpng-1.0.52rc01-LICENSE.txt
-   libpng-1.0.52rc01-Y2K-compliance.txt
-   libpng-1.0.52rc01-[previous version]-diff.txt
+   libpng-1.2.51-README.txt
+   libpng-1.2.51-KNOWNBUGS.txt
+   libpng-1.2.51-LICENSE.txt
+   libpng-1.2.51-Y2K-compliance.txt
+   libpng-1.2.51-[previous version]-diff.txt
 
-Changes since the last public release (1.0.51):
+Changes since the last public release (1.2.50):
 
-version 1.2.42beta01 [December 4, 2009]
-  Removed "#define PNG_NO_ERROR_NUMBERS" that was inadvertently added
-    to pngconf.h in version 1.2.41.
-  Revised scripts/makefile.netbsd, makefile.openbsd, and makefile.sco
-    to put png.h and pngconf.h in $prefix/include, like the other scripts,
-    instead of in $prefix/include/libpng.  Also revised makefile.sco
-    to put them in $prefix/include/libpng%NN% instead of in
-    $prefix/include/libpng/libpng%NN%.
-  Removed leftover "-DPNG_CONFIGURE_LIBPNG" from scripts/makefile.darwin
+version 1.2.51 [February 6, 2014]
 
-version 1.2.42beta02 [December 11, 2009]
-  Removed leftover "-DPNG_CONFIGURE_LIBPNG" from contrib/pngminim/*/makefile
-  Relocated png_do_chop() to its original position in pngrtran.c. The
-    change in version 1.2.41beta08 caused transparency to be handled wrong
-    in some 16-bit datastreams (Yusaku Sugai).
-
-version 1.2.42rc01 [December 17, 2009]
-  No changes.
-
-version 1.2.42rc02 [December 22, 2009]
-  Renamed libpng-pc.in back to libpng.pc.in and revised CMakeLists.txt
-    (revising changes made in 1.2.41beta17 and 1.2.41rc01)
-
-version 1.0.52 and 1.2.42 [December 23, 2009]
+version 1.0.61 and 1.2.51 [February 6, 2014]
+  Ignore, with a warning, out-of-range value of num_trans in png_set_tRNS().
+  Replaced AM_CONFIG_HEADER(config.h) with AC_CONFIG_HEADERS([config.h])
+    in configure.ac
+  Changed default value of PNG_USER_CACHE_MAX from 0 to 32767 in pngconf.h.
+  Avoid a possible memory leak in contrib/gregbook/readpng.c
+  Revised libpng.3 so that "doclifter" can process it.
+  Changed '"%s"m' to '"%s" m' in png_debug macros to improve portability
+    among compilers.
+  Rebuilt the configure scripts with autoconf-2.69 and automake-1.14.1
+  Removed potentially misleading warning from png_check_IHDR().
+  Quiet set-but-not-used warnings in pngset.c
+  Quiet an uninitialized memory warning from VC2013 in png_get_png().
+  Quiet unused variable warnings from clang by porting PNG_UNUSED() from
+    libpng-1.4.6.
+  Added -DZ_SOLO to CFLAGS in contrib/pngminim/*/makefile
+  Added an #ifdef PNG_FIXED_POINT_SUPPORTED/#endif in pngset.c
 
 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
+#endif

CHANGES

@@ -1,4 +1,4 @@
-/*
+#if 0
 CHANGES - changes for libpng
 
 version 0.2
@@ -978,15 +978,21 @@ version 1.2.0beta1 [May 6, 2001]
   Bumped DLLNUM to 2.
   Re-enabled PNG_MNG_FEATURES_SUPPORTED and enabled PNG_ASSEMBLER_CODE_SUPPORTED
     by default.
+  Added runtime selection of MMX features.
+  Added png_set_strip_error_numbers function and related macros.
 version 1.2.0beta2 [May 7, 2001]
   Finished merging 1.2.0beta1 with version 1.0.11
   Added a check for attempts to read or write PLTE in grayscale PNG datastreams.
 version 1.2.0beta3 [May 17, 2001]
+  Enabled user memory function by default.
   Modified png_create_struct so it passes user mem_ptr to user memory allocator.
   Increased png_mng_features flag from png_byte to png_uint_32.
+  Bumped shared-library (so-number) and dll-number to 3.
 version 1.2.0beta4 [June 23, 2001]
   Check for missing profile length field in iCCP chunk and free chunk_data
      in case of truncated iCCP chunk.
+  Bumped shared-library number to 3 in makefile.sgi and makefile.sggcc
+  Bumped dll-number from 2 to 3 in makefile.cygwin
   Revised contrib/gregbook/rpng*-x.c to avoid a memory leak and to exit cleanly
      if user attempts to run it on an 8-bit display.
   Updated contrib/gregbook
@@ -1065,6 +1071,7 @@ version 1.2.2beta3 [March 7, 2002]
   Modified shared-library makefiles to install pkgconfig/libpngNN.pc.
   Export (with PNGAPI) png_zalloc, png_zfree, and png_handle_as_unknown
   Removed unused png_write_destroy_info prototype from png.h
+  Eliminated incorrect use of width_mmx from pnggccrd.c in pixel_bytes == 8 case
   Added install-shared target to all makefiles that make shared libraries.
   Stopped a double free of palette, hist, and trans when not using free_me.
   Added makefile.32sunu for Sun Ultra 32 and makefile.64sunu for Sun Ultra 64.
@@ -1259,6 +1266,8 @@ version 1.2.6beta3 [July 18, 2004]
   Updated scripts/makefile.vc(a)win32 (Cosmin).
   Updated the MSVC project (Simon-Pierre, Cosmin).
   Updated the Borland C++ Builder project (Cosmin).
+  Avoided access to asm_flags in pngvcrd.c, if PNG_1_0_X is defined (Cosmin).
+  Commented out warning about uninitialized mmx_support in pngvcrd.c (Cosmin).
   Removed scripts/makefile.bd32 and scripts/pngdef.pas (Cosmin).
   Added extra guard around inclusion of Turbo C memory headers, in pngconf.h
     (Cosmin).
@@ -1350,6 +1359,7 @@ version 1.2.7beta2 [August 28, 2004]
   Fixed bug with sCAL chunk and big-endian machines (David Munro).
   Undid new code added in 1.2.6rc2 to update the color_type in
     png_set_filler().
+  Added png_set_add_alpha() that updates color type.
 version 1.0.17rc1 and 1.2.7rc1 [September 4, 2004]
   Revised png_set_strip_filler() to not remove alpha if color_type has alpha.
 
@@ -1360,6 +1370,7 @@ version 1.2.8beta1 [November 1, 2004]
   Fixed bug in png_text_compress() that would fail to complete a large block.
   Fixed bug, introduced in libpng-1.2.7, that overruns a buffer during
     strip alpha operation in png_do_strip_filler().
+  Added PNG_1_2_X definition in pngconf.h
   Comment out with #ifdef/#endif png_info_init in png.c and png_read_init
     in pngread.c (as of 1.3.0)
 version 1.2.8beta2 [November 2, 2004]
@@ -1467,7 +1478,7 @@ version 1.2.9beta5 [March 4, 2006]
   Removed trailing blanks from source files.
   Put version and date of latest change in each source file, and changed
     copyright year accordingly.
-  More cleanup of configure.ac, Makefile.ac, and associated scripts.
+  More cleanup of configure.ac, Makefile.am, and associated scripts.
   Restored scripts/makefile.elf which was inadvertently deleted.
 
 version 1.2.9beta6 [March 6, 2006]
@@ -2600,8 +2611,8 @@ version 1.2.42beta01 [December 4, 2009]
   Revised scripts/makefile.netbsd, makefile.openbsd, and makefile.sco
     to put png.h and pngconf.h in $prefix/include, like the other scripts,
     instead of in $prefix/include/libpng.  Also revised makefile.sco
-    to put them in $prefix/include/libpng10 instead of in
-    $prefix/include/libpng/libpng10.
+    to put them in $prefix/include/libpng12 instead of in
+    $prefix/include/libpng/libpng12.
   Removed leftover "-DPNG_CONFIGURE_LIBPNG" from scripts/makefile.darwin
 
 version 1.2.42beta02 [December 11, 2009]
@@ -2617,7 +2628,191 @@ version 1.2.42rc02 [December 22, 2009]
   Renamed libpng-pc.in back to libpng.pc.in and revised CMakeLists.txt
     (revising changes made in 1.2.41beta17 and 1.2.41rc01)
 
-version 1.0.52 and 1.2.42 [December 23, 2009]
+version 1.2.42rc03 [December 25, 2009]
+  Swapped PNG_UNKNOWN_CHUNKS_SUPPORTED and PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+    in pngset.c to be consistent with other changes in version 1.2.38.
+
+version 1.2.42rc04 [January 1, 2010]
+  Marked png_memcpy_check() and png_memset_check() PNG_DEPRECATED.
+  Updated copyright year.
+
+version 1.2.42rc05 [January 2, 2010]
+  Avoid deprecated references to png_ptr-io_ptr and png_ptr->error_ptr
+    in pngtest.c
+
+version 1.2.42 and 1.0.52 [January 3, 2010]
+  No changes.
+
+version 1.2.43beta01 [January 27, 2010]
+  Updated CMakeLists.txt for consistent indentation and to avoid an
+    unclosed if-statement warning (Philip Lowman).
+  Removed "#ifdef PNG_1_0_X / #endif" surrounding
+    PNG_READ_16_TO_8_SUPPORTED and PNG_READ_GRAY_TO_RGB_SUPPORTED
+    in pngconf.h.  These were added in libpng-1.2.41beta08 and libpng-1.0.51,
+    which introduced a binary incompatibility with libpng-1.0.50.
+  Backported new png_decompress_chunk() algorithm from libpng-1.4.1.
+
+version 1.2.43beta02 [February 1, 2010]
+  Backported two-pass png_decompress_chunk() algorithm from libpng-1.4.1.
+
+version 1.2.43beta03 [February 6, 2010]
+  Backported fast png_push_save_buffer() algorithm from libpng-1.4.1.
+  Backported some cosmetic changes from libpng-1.4.1.
+
+version 1.2.43beta04 [February 8, 2010]
+  Reverted recent changes to png_push_save-buffer().
+  Removed PNGAPI declaration of png_calloc() and png_write_sig() in
+    1ibpng-1.2.X, introduced by mistake in libpng-1.2.41.
+  Return allocated "old_buffer" in png_push_save_buffer() before png_error()
+    to avoid a potential memory leak.
+
+version 1.2.43beta05 [February 8, 2010]
+  Ported rewritten png_decompress_chunk() by John Bowler from libpng-1.4.1.
+
+version 1.0.53rc01 and 1.2.43rc01 [February 18, 2010]
+  No changes.
+
+version 1.0.53rc02 and 1.2.43rc02 [February 19, 2010]
+  Define _ALL_SOURCE in configure.ac, makefile.aix, and CMakeLists.txt
+    when using AIX compiler.
+
+version 1.0.53 and 1.2.43 [February 25, 2010]
+  Removed unused gzio.c from contrib/pngminim gather and makefile scripts
+
+version 1.2.44beta01 [June 18, 2010]
+  In pngpread.c: png_push_have_row() add check for new_row > height
+  Removed the now-redundant check for out-of-bounds new_row from example.c
+
+version 1.2.44beta02 [June 19, 2010]
+  In pngpread.c: png_push_process_row() add check for too many rows.
+  Removed the now-redundant check for new_row > height in png_push_have_row().
+
+version 1.2.44beta03 [June 20, 2010]
+  Rewrote png_process_IDAT_data() to consistently treat extra data as warnings
+    and handle end conditions more cleanly.
+  Removed the new (beta02) check in png_push_process_row().
+
+version 1.2.44rc01 [June 21, 2010]
+  Revised some comments in png_process_IDAT_data().
+
+version 1.2.44rc02 [June 22, 2010]
+  Stop memory leak when reading a malformed sCAL chunk.
+
+version 1.2.44rc03 [June 23, 2010]
+  Revised pngpread.c patch of beta05 to avoid an endless loop.
+
+version 1.2.44 [June 26, 2010]
+  Updated some of the "last changed" dates.
+
+version 1.2.45beta01 [June 7, 2011]
+  Fixed uninitialized memory read in png_format_buffer() (Bug
+    report by Frank Busse, related to CVE-2004-0421).
+  Pass "" instead of '\0' to png_default_error() in png_err().  This mistake
+    was introduced in libpng-1.2.20beta01.
+  Check for up->location !PNG_AFTER_IDAT when writing unknown chunks
+    before IDAT.
+  Ported bugfix in pngrtran.c from 1.5.3: when expanding a paletted image,
+    always expand to RGBA if transparency is present.
+
+version 1.2.45beta02 [June 8, 2011]
+  Check for integer overflow in png_set_rgb_to_gray().
+
+version 1.2.45beta03 [June 19, 2011]
+  Check for sCAL chunk too short.
+
+version 1.2.45rc01 and 1.0.55rc01 [June 30, 2011]
+  Updated "last changed" dates and copyright year.
+
+version 1.2.45 and 1.0.55 [July 7, 2011]
+  No changes.
+
+version 1.2.46rc01 and 1.0.56rc01 [July 8, 2011]
+  Reverted changes to Makefile.am and Makefile.in to libpng-1.2.44 versions.
+
+version 1.2.46rc02 and 1.0.56rc02 [July 8, 2011]
+  Added CMakeLists.txt, projects/xcode, and pnggccrd.c to EXTRA_DIST in
+    Makefile.am and Makefile.in
+
+version 1.2.46 and 1.0.56 [July 9, 2011]
+  Udated copyright year to 2011.
+
+version 1.2.47beta01 [February 17, 2012]
+  Updated contrib/pngminus/makefile.std (Samuli Souminen)
+
+version 1.0.57rc01 and 1.2.47rc01 [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.
+
+version 1.0.57 and 1.2.47 [February 18, 2012]
+  No changes.
+
+version 1.2.48beta01 [February 27, 2012]
+  Removed two useless #ifdef directives from pngread.c and one from pngrutil.c
+  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).
+  Fixed incorrect type (int copy should be png_size_t copy) in png_inflate().
+  Fixed off-by-one bug in png_handle_sCAL() when using fixed point arithmetic,
+    causing out-of-bounds read in png_set_sCAL() because of failure to copy
+    the string terminators.  This bug was introduced in libpng-1.0.6 (Frank
+    Busse).
+
+version 1.2.48rc01 [March 2, 2012]
+  Removed the png_free() of unused png_ptr->current_text from pngread.c.
+  Added libpng license text to pnggccrd.c and pngvcrd.c (requested by Chrome).
+
+version 1.2.48rc02 [March 2, 2012]
+  Removed all of the assembler code from pnggccrd.c and just "return 2;".
+
+version 1.0.58 and 1.2.48 [March 8, 2012]
+  No changes.
+
+version 1.0.59 and 1.2.49 [March 29, 2012]
+  Revised png_set_text_2() to avoid potential memory corruption (fixes
+    CVE-2011-3048, also known as CVE-2012-3425).
+  Prevent PNG_EXPAND+PNG_SHIFT doing the shift twice.
+
+version 1.0.60 and 1.2.50 [July 9, 2012]
+  Changed "a+w" to "u+w" in Makefile.in to fix CVE-2012-3386.
+
+version 1.2.51beta01 [January 22, 2013]
+  Ignore, with a warning, out-of-range value of num_trans in png_set_tRNS().
+  Replaced AM_CONFIG_HEADER(config.h) with AC_CONFIG_HEADERS([config.h])
+    in configure.ac
+  Changed default value of PNG_USER_CACHE_MAX from 0 to 32767 in pngconf.h.
+
+version 1.2.51beta02 [June 13, 2013]
+  Avoid a possible memory leak in contrib/gregbook/readpng.c
+  Revised libpng.3 so that "doclifter" can process it.
+
+version 1.2.51beta03 [January 1, 2014]
+  Changed '"%s"m' to '"%s" m' in png_debug macros to improve portability
+    among compilers.
+  Rebuilt the configure scripts with autoconf-2.69 and automake-1.14.1
+
+version 1.2.51beta04 [January 10, 2014]
+  Removed potentially misleading warning from png_check_IHDR().
+
+version 1.2.51beta05 [January 22, 2014]
+  Quiet set-but-not-used warnings in pngset.c
+
+version 1.2.51rc01 [January 28, 2014]
+  No changes.
+
+version 1.2.51rc02 [January 30, 2014]
+  Quiet an uninitialized memory warning from VC2013 in png_get_png().
+
+version 1.2.51rc03 [February 3, 2014]
+  Quiet unused variable warnings from clang by porting PNG_UNUSED() from
+    libpng-1.4.6.
+
+version 1.2.51rc04 [February 3, 2014]
+  Added -DZ_SOLO to CFLAGS in contrib/pngminim/*/makefile
+
+version 1.0.61 and 1.2.51 [February 6, 2014]
+  Added an #ifdef PNG_FIXED_POINT_SUPPORTED/#endif in pngset.c
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
@@ -2626,4 +2821,4 @@ to subscribe)
 or to glennrp at users.sourceforge.net
 
 Glenn R-P
-*/
+#endif

CMakeLists.txt

@@ -0,0 +1,284 @@
+cmake_minimum_required(VERSION 2.4.3)
+set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS true)
+
+if(UNIX AND NOT DEFINED CMAKE_BUILD_TYPE)
+  set(CMAKE_BUILD_TYPE "RelWithDebInfo" CACHE STRING 
+      "Choose the type of build, options are:
+         None(CMAKE_CXX_FLAGS or CMAKE_C_FLAGS used)
+         Debug
+         Release
+         RelWithDebInfo
+         MinSizeRel.")
+endif()
+
+project(libpng C)
+enable_testing()
+
+# Copyright (C) 2007-2010 Glenn Randers-Pehrson
+
+# This code is released under the libpng license.
+# For conditions of distribution and use, see the disclaimer
+# and license in png.h
+
+set(PNGLIB_MAJOR 1)
+set(PNGLIB_MINOR 2)
+set(PNGLIB_RELEASE 51)
+set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR})
+set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE})
+
+# needed packages
+find_package(ZLIB REQUIRED)
+include_directories(${ZLIB_INCLUDE_DIR})
+
+if(NOT WIN32)
+  find_library(M_LIBRARY
+    NAMES m
+    PATHS /usr/lib /usr/local/lib
+  )
+  if(NOT M_LIBRARY)
+    message(STATUS
+      "math library 'libm' not found - floating point support disabled")
+  endif()
+else()
+  # not needed on windows
+  set(M_LIBRARY "")
+endif()
+
+# COMMAND LINE OPTIONS
+if(DEFINED PNG_SHARED)
+  option(PNG_SHARED "Build shared lib" ${PNG_SHARED})
+else()
+  option(PNG_SHARED "Build shared lib" ON)
+endif()
+if(DEFINED PNG_STATIC)
+  option(PNG_STATIC "Build static lib" ${PNG_STATIC})
+else()
+  option(PNG_STATIC "Build static lib" ON)
+endif()
+
+if(MINGW)
+  option(PNG_TESTS  "Build pngtest" NO)
+else()
+  option(PNG_TESTS  "Build pngtest" YES)
+endif()
+
+option(PNG_NO_CONSOLE_IO "FIXME" YES)
+option(PNG_NO_STDIO      "FIXME" YES)
+option(PNG_DEBUG         "Build with debug output" NO)
+option(PNGARG            "FIXME" YES)
+#TODO:
+# PNG_CONSOLE_IO_SUPPORTED
+
+# maybe needs improving, but currently I don't know when we can enable what :)
+set(png_asm_tmp "OFF")
+if(NOT WIN32)
+  find_program(uname_executable NAMES uname PATHS /bin /usr/bin /usr/local/bin)
+  if(uname_executable)
+    exec_program(${uname_executable}
+                 ARGS --machine OUTPUT_VARIABLE uname_output)
+    if("uname_output" MATCHES "^.*i[1-9]86.*$")
+      set(png_asm_tmp "ON")
+    else("uname_output" MATCHES "^.*i[1-9]86.*$")
+      set(png_asm_tmp "OFF")
+    endif("uname_output" MATCHES "^.*i[1-9]86.*$")
+  endif(uname_executable)
+else()
+  # this env var is normally only set on win64
+  set(TEXT "ProgramFiles(x86)")
+  if("$ENV{${TEXT}}" STREQUAL "")
+    set(png_asm_tmp "ON")
+  endif("$ENV{${TEXT}}" STREQUAL "")
+endif()
+
+# SET LIBNAME
+set(PNG_LIB_NAME png${PNGLIB_MAJOR}${PNGLIB_MINOR})
+
+# to distinguish between debug and release lib
+set(CMAKE_DEBUG_POSTFIX "d")
+
+
+# OUR SOURCES
+set(libpng_sources
+  png.h
+  pngconf.h
+  png.c
+  pngerror.c
+  pngget.c
+  pngmem.c
+  pngpread.c
+  pngread.c
+  pngrio.c
+  pngrtran.c
+  pngrutil.c
+  pngset.c
+  pngtrans.c
+  pngwio.c
+  pngwrite.c
+  pngwtran.c
+  pngwutil.c
+)
+set(pngtest_sources
+  pngtest.c
+)
+# SOME NEEDED DEFINITIONS
+
+add_definitions(-DPNG_CONFIGURE_LIBPNG)
+
+if(_AIX)
+  add_definitions(-D_ALL_SOURCE)
+endif(_AIX)
+
+if(MSVC)
+  add_definitions(-DPNG_NO_MODULEDEF -D_CRT_SECURE_NO_DEPRECATE)
+endif(MSVC)
+
+if(PNG_SHARED OR  NOT MSVC)
+  #if building msvc static this has NOT to be defined
+  add_definitions(-DZLIB_DLL)
+endif()
+
+add_definitions(-DLIBPNG_NO_MMX)
+add_definitions(-DPNG_NO_MMX_CODE)
+
+
+if(PNG_CONSOLE_IO_SUPPORTED)
+  add_definitions(-DPNG_CONSOLE_IO_SUPPORTED)
+endif()
+
+if(PNG_NO_CONSOLE_IO)
+  add_definitions(-DPNG_NO_CONSOLE_IO)
+endif()
+
+if(PNG_NO_STDIO)
+  add_definitions(-DPNG_NO_STDIO)
+endif()
+
+if(PNG_DEBUG)
+  add_definitions(-DPNG_DEBUG)
+endif()
+
+if(NOT M_LIBRARY AND NOT WIN32)
+  add_definitions(-DPNG_NO_FLOATING_POINT_SUPPORTED)
+endif()
+
+# NOW BUILD OUR TARGET
+include_directories(${CMAKE_CURRENT_SOURCE_DIR} ${ZLIB_INCLUDE_DIR})
+
+if(PNG_SHARED)
+  add_library(${PNG_LIB_NAME} SHARED ${libpng_sources})
+  if(MSVC)
+    # msvc does not append 'lib' - do it here to have consistent name
+    set_target_properties(${PNG_LIB_NAME} PROPERTIES PREFIX "lib")
+  endif()
+  target_link_libraries(${PNG_LIB_NAME} ${ZLIB_LIBRARY} ${M_LIBRARY})
+endif()
+
+if(PNG_STATIC)
+# does not work without changing name
+  set(PNG_LIB_NAME_STATIC ${PNG_LIB_NAME}_static)
+  add_library(${PNG_LIB_NAME_STATIC} STATIC ${libpng_sources})
+  if(MSVC)
+    # msvc does not append 'lib' - do it here to have consistent name
+    set_target_properties(${PNG_LIB_NAME_STATIC} PROPERTIES PREFIX "lib")
+  endif()
+endif()
+
+
+if(PNG_SHARED AND WIN32)
+  set_target_properties(${PNG_LIB_NAME} PROPERTIES DEFINE_SYMBOL PNG_BUILD_DLL)
+endif()
+
+if(PNG_TESTS AND PNG_SHARED)
+  # does not work with msvc due to png_lib_ver issue
+  add_executable(pngtest ${pngtest_sources})
+  target_link_libraries(pngtest ${PNG_LIB_NAME})
+  add_test(pngtest pngtest ${CMAKE_CURRENT_SOURCE_DIR}/pngtest.png)
+endif()
+
+
+# CREATE PKGCONFIG FILES
+# we use the same files like ./configure, so we have to set its vars
+set(prefix      ${CMAKE_INSTALL_PREFIX})
+set(exec_prefix ${CMAKE_INSTALL_PREFIX})
+set(libdir      ${CMAKE_INSTALL_PREFIX}/lib)
+set(includedir  ${CMAKE_INSTALL_PREFIX}/include)
+
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/libpng.pc.in
+  ${CMAKE_CURRENT_BINARY_DIR}/libpng.pc)
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/libpng-config.in
+  ${CMAKE_CURRENT_BINARY_DIR}/libpng-config)
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/libpng.pc.in
+  ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}.pc)
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/libpng-config.in
+  ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config)
+
+# SET UP LINKS
+if(PNG_SHARED)
+  set_target_properties(${PNG_LIB_NAME} PROPERTIES
+#   VERSION 0.${PNGLIB_RELEASE}.1.2.51
+    VERSION 0.${PNGLIB_RELEASE}.0
+    SOVERSION 0
+    CLEAN_DIRECT_OUTPUT 1)
+endif()
+if(PNG_STATIC)
+  if(NOT WIN32)
+    # that's uncool on win32 - it overwrites our static import lib...
+    set_target_properties(${PNG_LIB_NAME_STATIC} PROPERTIES
+      OUTPUT_NAME ${PNG_LIB_NAME}
+      CLEAN_DIRECT_OUTPUT 1)
+  endif()
+endif()
+
+# INSTALL
+if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL )
+  if(PNG_SHARED)
+    install(TARGETS ${PNG_LIB_NAME}
+            RUNTIME DESTINATION bin
+            LIBRARY DESTINATION lib
+            ARCHIVE DESTINATION lib)
+  endif()
+  if(PNG_STATIC)
+    install(TARGETS ${PNG_LIB_NAME_STATIC}
+            LIBRARY DESTINATION lib
+            ARCHIVE DESTINATION lib)
+  endif()
+endif()
+
+if(NOT SKIP_INSTALL_HEADERS AND NOT SKIP_INSTALL_ALL )
+  install(FILES png.h pngconf.h         DESTINATION include)
+  install(FILES png.h pngconf.h         DESTINATION include/${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)
+endif()
+if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL )
+  # Install man pages
+  install(FILES libpng.3 libpngpf.3             DESTINATION man/man3)
+  install(FILES png.5                           DESTINATION man/man5)
+  # Install pkg-config files
+  install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng.pc
+          DESTINATION lib/pkgconfig)
+  install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng-config
+          DESTINATION bin)
+  install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}.pc
+          DESTINATION lib/pkgconfig)
+  install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config
+          DESTINATION bin)
+endif()
+
+# what's with libpng.txt and all the extra files?
+
+
+# UNINSTALL
+# do we need this?
+
+
+# DIST
+# do we need this?
+
+# to create msvc import lib for mingw compiled shared lib
+# pexports libpng.dll > libpng.def
+# lib /def:libpng.def /machine:x86
+

INSTALL

@@ -1,5 +1,5 @@
 
-Installing libpng version 1.0.52rc01 - December 23, 2009
+Installing libpng version 1.2.51 - February 6, 2014
 
 On Unix/Linux and similar systems, you can simply type
 
@@ -46,7 +46,7 @@ to have access to the zlib.h and zconf.h include files that
 correspond to the version of zlib that's installed.
 
 You can rename the directories that you downloaded (they
-might be called "libpng-1.0.52rc01" or "libpng10" and "zlib-1.2.3"
+might be called "libpng-1.2.51" or "libpng12" and "zlib-1.2.3"
 or "zlib123") so that you have directories called "zlib" and "libpng".
 
 Your directory structure should look like this:
@@ -60,10 +60,8 @@ Your directory structure should look like this:
           CMakeLists.txt    =>  "cmake" script
           configuration files:
              configure.ac, configure, Makefile.am, Makefile.in,
-%12-%             autogen.sh, config.guess, ltmain.sh, missing,
-%12-%             aclocal.m4, config.h.in, config.sub,
-%14+%             autogen.sh, config.guess, ltmain.sh, missing, libpng.pc.in,
-%14+%             libpng-config.in, aclocal.m4, config.h.in, config.sub,
+             autogen.sh, config.guess, ltmain.sh, missing,
+             aclocal.m4, config.h.in, config.sub,
              depcomp, install-sh, mkinstalldirs, test-pngtest.sh
           contrib
              gregbook

KNOWNBUG

@@ -1,24 +1,17 @@
 
-Known bugs in libpng version 1.0.52rc01
+Known bugs in libpng version 1.2.51
 
-1. December 4, 2009: The PNG_NO_ERROR_NUMBERS macro was inadvertently
-   defined in libpng-1.2.41/pngconf.h, which may cause a problem with
-   building a binary-compatible library.
-
-   STATUS: This will be fixed in libpng-1.2.42.  In the meantime, simply
-   delete the definition from line :
-
-2. February 23, 2006: The custom makefiles don't build libpng with -lz.
+1. February 23, 2006: The custom makefiles don't build libpng with -lz.
 
    STATUS: This is a subject of debate. The change will probably be made
    as a part of a major overhaul of the makefiles in libpng version 1.4.0.
 
-3. February 24, 2006: The Makefile generated by the "configure" script
+2. February 24, 2006: The Makefile generated by the "configure" script
    fails to install symbolic links
    libpng12.so => libpng12.so.0.1.2.9betaN
    that are generated by the custom makefiles.
 
-4. September 4, 2007:  There is a report that pngtest crashes on MacOS 10.
+3. September 4, 2007:  There is a report that pngtest crashes on MacOS 10.
 
    STATUS: workarounds are
       1) Compile without optimization (crashes are observed with

LICENSE

@@ -10,8 +10,8 @@ this sentence.
 
 This code is released under the libpng license.
 
-libpng versions 1.2.6, August 15, 2004, through 1.0.52rc01, December 23, 2009, are
-Copyright (c) 2004, 2006-2009 Glenn Randers-Pehrson, and are
+libpng versions 1.2.6, August 15, 2004, through 1.2.51, February 6, 2014, are
+Copyright (c) 2004, 2006-2014 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
-December 23, 2009
+February 6, 2014

Makefile.am

@@ -16,7 +16,7 @@ AUTOMAKE_OPTIONS = foreign
 # test programs - run on make check, make distcheck
 check_PROGRAMS= pngtest
 pngtest_SOURCES = pngtest.c
-pngtest_LDADD = libpng10.la
+pngtest_LDADD = libpng12.la
 TESTS = test-pngtest.sh
 TESTS_ENVIRONMENT= srcdir=$(srcdir)
 
@@ -24,39 +24,39 @@ TESTS_ENVIRONMENT= srcdir=$(srcdir)
 dist_man_MANS= libpng.3 libpngpf.3 png.5
 
 # generate the -config scripts if required
-binconfigs= libpng10-config
-EXTRA_SCRIPTS= libpng-config libpng10-config
+binconfigs= libpng12-config
+EXTRA_SCRIPTS= libpng-config libpng12-config
 bin_SCRIPTS= @binconfigs@
 
 # rules to build libpng, only build the old library on request
-lib_LTLIBRARIES=libpng10.la @compatlib@
+lib_LTLIBRARIES=libpng12.la @compatlib@
 EXTRA_LTLIBRARIES= libpng.la
-libpng10_la_SOURCES = png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
+libpng12_la_SOURCES = png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
 	pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
 	pngwtran.c pngmem.c pngerror.c pngpread.c \
 	png.h pngconf.h
-libpng_la_SOURCES = $(libpng10_la_SOURCES)
+libpng_la_SOURCES = $(libpng12_la_SOURCES)
 
 libpng_la_CPPFLAGS = @LIBPNG_DEFINES@
-libpng10_la_CPPFLAGS = @LIBPNG_DEFINES@
+libpng12_la_CPPFLAGS = @LIBPNG_DEFINES@
 
 # MAJOR UPGRADE: the version-number settings below must be changed.
-libpng10_la_LDFLAGS = -no-undefined -export-dynamic \
+libpng12_la_LDFLAGS = -no-undefined -export-dynamic \
 	-version-number 0:@PNGLIB_RELEASE@:0
 # -rpath is needed as automake doesn't know the directory
 libpng_la_LDFLAGS = -rpath '$(libdir)' -no-undefined -export-dynamic \
-	-version-number 2:@PNGLIB_RELEASE@:0
+	-version-number 3:@PNGLIB_RELEASE@:0
 
 if HAVE_LD_VERSION_SCRIPT
   # Versioned symbols and restricted exports
-  libpng10_la_LDFLAGS += -Wl,--version-script=libpng.vers
-  libpng10_la_DEPENDENCIES = libpng.vers
+  libpng12_la_LDFLAGS += -Wl,--version-script=libpng.vers
+  libpng12_la_DEPENDENCIES = libpng.vers
 else
   # Only restricted exports when possible
-  libpng10_la_LDFLAGS += -export-symbols libpng.sym
-  libpng10_la_DEPENDENCIES = libpng.sym
+  libpng12_la_LDFLAGS += -export-symbols libpng.sym
+  libpng12_la_DEPENDENCIES = libpng.sym
 endif
-libpng_la_DEPENDENCIES = $(libpng10_la_DEPENDENCIES)
+libpng_la_DEPENDENCIES = $(libpng12_la_DEPENDENCIES)
 
 # Avoid depending upon Character Ranges.
 AN = '_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
@@ -68,27 +68,30 @@ pkginclude_HEADERS= png.h pngconf.h
 # pkg-config stuff, note that libpng.pc is always required in order
 # to get the correct library
 pkgconfigdir = @pkgconfigdir@
-pkgconfig_DATA = libpng10.pc
+pkgconfig_DATA = libpng12.pc
 
 #extra source distribution files.
 EXTRA_DIST= \
 	ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO \
 	pngtest.png pngbar.png pngnow.png pngbar.jpg autogen.sh \
+        CMakeLists.txt \
 	${srcdir}/projects/cbuilder5/* \
 	${srcdir}/projects/beos/* \
 	${srcdir}/projects/visualc6/* \
 	${srcdir}/projects/visualc71/* \
 	${srcdir}/projects/wince.txt \
 	${srcdir}/projects/netware.txt \
+	${srcdir}/projects/xcode/* \
 	${srcdir}/scripts/* \
 	${srcdir}/contrib/gregbook/* \
+	${srcdir}/contrib/pngminim/* \
 	${srcdir}/contrib/pngminus/* \
 	${srcdir}/contrib/pngsuite/* \
 	${srcdir}/contrib/visupng/* \
 	$(TESTS) \
-	example.c libpng-1.0.52rc01.txt pngvcrd.c
+	example.c libpng-1.2.51.txt pnggccrd.c pngvcrd.c
 
-CLEANFILES= pngout.png libpng10.pc libpng10-config libpng.vers \
+CLEANFILES= pngout.png libpng12.pc libpng12-config libpng.vers \
 libpng.sym
 
 MAINTAINERCLEANFILES = Makefile.in aclocal.m4 config.guess config.h.in \
@@ -126,7 +129,7 @@ install-data-hook:
 	cd $(DESTDIR)$(pkgconfigdir); rm -f libpng.pc
 	cd $(DESTDIR)$(pkgconfigdir); $(LN_S) $(PNGLIB_BASENAME).pc libpng.pc
 
-# do evil things to libpng to cause libpng10 to be used
+# do evil things to libpng to cause libpng12 to be used
 install-exec-hook:
 	cd $(DESTDIR)$(bindir); rm -f libpng-config
 	cd $(DESTDIR)$(bindir); $(LN_S) $(PNGLIB_BASENAME)-config libpng-config

README

@@ -1,4 +1,4 @@
-README for libpng version 1.0.52rc01 - December 23, 2009 (shared library 10.0)
+README for libpng version 1.2.51 - February 6, 2014 (shared library 12.0)
 See the note about version numbers near the top of png.h
 
 See INSTALL for instructions on how to install libpng.
@@ -129,7 +129,7 @@ and ...".  If in doubt, send questions to me.  I'll bounce them
 to others, if necessary.
 
 Please do not send suggestions on how to change PNG.  We have
-been discussing PNG for twelve years now, and it is official and
+been discussing PNG for nineteen years now, and it is official and
 finished.  If you have suggestions for libpng, however, I'll
 gladly listen.  Even if your suggestion is not used immediately,
 it may be used later.
@@ -174,8 +174,7 @@ Files in this distribution:
        gregbook         =>  source code for PNG reading and writing, from
                             Greg Roelofs' "PNG: The Definitive Guide",
                             O'Reilly, 1999
-       msvctest     =>  Builds and runs pngtest using a MSVC workspace
-       pngminim     =>  Simple pnm2pngm and png2pnmm programs
+       pngminim     =>  Minimal pnm2pngm and png2pnmm programs
        pngminus     =>  Simple pnm2png and png2pnm programs
        pngsuite     =>  Test images
        visupng      =>  Contains a MSVC workspace for VisualPng
@@ -184,11 +183,14 @@ Files in this distribution:
        beos             =>  Contains a Beos workspace for building libpng
        c5builder        =>  Contains a Borland workspace for building
                             libpng and zlib
+       MacOSX           =>  Contains a MacOSX workspace for building libpng
        netware.txt      =>  Contains instructions for downloading a set
                             of project files for building libpng and
                             zlib on Netware.
        visualc6         =>  Contains a Microsoft Visual C++ (MSVC)
                             workspace for building libpng and zlib
+       visualc71        =>  Contains a Microsoft Visual C++ (MSVC)
+                            workspace for building libpng and zlib
        wince.txt        =>  Contains instructions for downloading a
                             Microsoft Visual C++ (Windows CD Toolkit)
                             workspace for building libpng and zlib on
@@ -199,11 +201,11 @@ Files in this distribution:
        makefile.std     =>  Generic UNIX makefile (cc, creates static
                             libpng.a)
        makefile.elf     =>  Linux/ELF gcc makefile symbol versioning,
-                            creates libpng10.so.0.1.0.52rc01)
+                            creates libpng12.so.0.1.2.51)
        makefile.linux   =>  Linux/ELF makefile (gcc, creates
-                            libpng10.so.0.1.0.52rc01)
+                            libpng12.so.0.1.2.51)
        makefile.gcmmx   =>  Linux/ELF makefile (gcc, creates
-                            libpng10.so.0.1.0.52rc01, previously
+                            libpng12.so.0.1.2.51, previously
                             used assembler code tuned for Intel MMX
                             platform)
        makefile.gcc     =>  Generic makefile (gcc, creates static
@@ -224,16 +226,16 @@ Files in this distribution:
        makefile.intel   =>  Intel C/C++ version 4.0 and later
        libpng.icc       =>  Project file, IBM VisualAge/C++ 4.0 or later
        makefile.netbsd  =>  NetBSD/cc makefile, makes libpng.so.
-       makefile.ne10bsd  =>  NetBSD/cc makefile, makes libpng10.so
+       makefile.ne12bsd  =>  NetBSD/cc makefile, makes libpng12.so
        makefile.openbsd =>  OpenBSD makefile
        makefile.sgi     =>  Silicon Graphics IRIX (cc, creates static lib)
        makefile.sggcc   =>  Silicon Graphics
-                            (gcc, creates libpng10.so.0.1.0.52rc01)
+                            (gcc, creates libpng12.so.0.1.2.51)
        makefile.sunos   =>  Sun makefile
        makefile.solaris =>  Solaris 2.X makefile
-                            (gcc, creates libpng10.so.0.1.0.52rc01)
+                            (gcc, creates libpng12.so.0.1.2.51)
        makefile.so9     =>  Solaris 9 makefile
-                            (gcc, creates libpng10.so.0.1.0.52rc01)
+                            (gcc, creates libpng12.so.0.1.2.51)
        makefile.32sunu  =>  Sun Ultra 32-bit makefile
        makefile.64sunu  =>  Sun Ultra 64-bit makefile
        makefile.sco     =>  For SCO OSr5  ELF and Unixware 7 with Native cc
@@ -263,7 +265,7 @@ Files in this distribution:
 
 Good luck, and happy coding.
 
--Glenn Randers-Pehrson (current maintainer)
+-Glenn Randers-Pehrson (current maintainer, since 1998)
  Internet: glennrp at users.sourceforge.net
 
 -Andreas Eric Dilger (former maintainer, 1996-1997)

Y2KINFO

@@ -1,13 +1,13 @@
    Y2K compliance in libpng:
    =========================
 
-      December 23, 2009
+      February 6, 2014
 
       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 1.0.52rc01 are Y2K compliant.  It is my belief that earlier
+      upward through 1.2.51 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

compile

@@ -0,0 +1,347 @@
+#! /bin/sh
+# Wrapper for compilers which do not understand '-c -o'.
+
+scriptversion=2012-10-14.11; # UTC
+
+# Copyright (C) 1999-2013 Free Software Foundation, Inc.
+# Written by Tom Tromey <tromey@cygnus.com>.
+#
+# 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
+# the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# 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, 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
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# This file is maintained in Automake, please report
+# bugs to <bug-automake@gnu.org> or send patches to
+# <automake-patches@gnu.org>.
+
+nl='
+'
+
+# We need space, tab and new line, in precisely that order.  Quoting is
+# there to prevent tools from complaining about whitespace usage.
+IFS=" ""	$nl"
+
+file_conv=
+
+# func_file_conv build_file lazy
+# Convert a $build file to $host form and store it in $file
+# Currently only supports Windows hosts. If the determined conversion
+# type is listed in (the comma separated) LAZY, no conversion will
+# take place.
+func_file_conv ()
+{
+  file=$1
+  case $file in
+    / | /[!/]*) # absolute file, and not a UNC file
+      if test -z "$file_conv"; then
+	# lazily determine how to convert abs files
+	case `uname -s` in
+	  MINGW*)
+	    file_conv=mingw
+	    ;;
+	  CYGWIN*)
+	    file_conv=cygwin
+	    ;;
+	  *)
+	    file_conv=wine
+	    ;;
+	esac
+      fi
+      case $file_conv/,$2, in
+	*,$file_conv,*)
+	  ;;
+	mingw/*)
+	  file=`cmd //C echo "$file " | sed -e 's/"\(.*\) " *$/\1/'`
+	  ;;
+	cygwin/*)
+	  file=`cygpath -m "$file" || echo "$file"`
+	  ;;
+	wine/*)
+	  file=`winepath -w "$file" || echo "$file"`
+	  ;;
+      esac
+      ;;
+  esac
+}
+
+# func_cl_dashL linkdir
+# Make cl look for libraries in LINKDIR
+func_cl_dashL ()
+{
+  func_file_conv "$1"
+  if test -z "$lib_path"; then
+    lib_path=$file
+  else
+    lib_path="$lib_path;$file"
+  fi
+  linker_opts="$linker_opts -LIBPATH:$file"
+}
+
+# func_cl_dashl library
+# Do a library search-path lookup for cl
+func_cl_dashl ()
+{
+  lib=$1
+  found=no
+  save_IFS=$IFS
+  IFS=';'
+  for dir in $lib_path $LIB
+  do
+    IFS=$save_IFS
+    if $shared && test -f "$dir/$lib.dll.lib"; then
+      found=yes
+      lib=$dir/$lib.dll.lib
+      break
+    fi
+    if test -f "$dir/$lib.lib"; then
+      found=yes
+      lib=$dir/$lib.lib
+      break
+    fi
+    if test -f "$dir/lib$lib.a"; then
+      found=yes
+      lib=$dir/lib$lib.a
+      break
+    fi
+  done
+  IFS=$save_IFS
+
+  if test "$found" != yes; then
+    lib=$lib.lib
+  fi
+}
+
+# func_cl_wrapper cl arg...
+# Adjust compile command to suit cl
+func_cl_wrapper ()
+{
+  # Assume a capable shell
+  lib_path=
+  shared=:
+  linker_opts=
+  for arg
+  do
+    if test -n "$eat"; then
+      eat=
+    else
+      case $1 in
+	-o)
+	  # configure might choose to run compile as 'compile cc -o foo foo.c'.
+	  eat=1
+	  case $2 in
+	    *.o | *.[oO][bB][jJ])
+	      func_file_conv "$2"
+	      set x "$@" -Fo"$file"
+	      shift
+	      ;;
+	    *)
+	      func_file_conv "$2"
+	      set x "$@" -Fe"$file"
+	      shift
+	      ;;
+	  esac
+	  ;;
+	-I)
+	  eat=1
+	  func_file_conv "$2" mingw
+	  set x "$@" -I"$file"
+	  shift
+	  ;;
+	-I*)
+	  func_file_conv "${1#-I}" mingw
+	  set x "$@" -I"$file"
+	  shift
+	  ;;
+	-l)
+	  eat=1
+	  func_cl_dashl "$2"
+	  set x "$@" "$lib"
+	  shift
+	  ;;
+	-l*)
+	  func_cl_dashl "${1#-l}"
+	  set x "$@" "$lib"
+	  shift
+	  ;;
+	-L)
+	  eat=1
+	  func_cl_dashL "$2"
+	  ;;
+	-L*)
+	  func_cl_dashL "${1#-L}"
+	  ;;
+	-static)
+	  shared=false
+	  ;;
+	-Wl,*)
+	  arg=${1#-Wl,}
+	  save_ifs="$IFS"; IFS=','
+	  for flag in $arg; do
+	    IFS="$save_ifs"
+	    linker_opts="$linker_opts $flag"
+	  done
+	  IFS="$save_ifs"
+	  ;;
+	-Xlinker)
+	  eat=1
+	  linker_opts="$linker_opts $2"
+	  ;;
+	-*)
+	  set x "$@" "$1"
+	  shift
+	  ;;
+	*.cc | *.CC | *.cxx | *.CXX | *.[cC]++)
+	  func_file_conv "$1"
+	  set x "$@" -Tp"$file"
+	  shift
+	  ;;
+	*.c | *.cpp | *.CPP | *.lib | *.LIB | *.Lib | *.OBJ | *.obj | *.[oO])
+	  func_file_conv "$1" mingw
+	  set x "$@" "$file"
+	  shift
+	  ;;
+	*)
+	  set x "$@" "$1"
+	  shift
+	  ;;
+      esac
+    fi
+    shift
+  done
+  if test -n "$linker_opts"; then
+    linker_opts="-link$linker_opts"
+  fi
+  exec "$@" $linker_opts
+  exit 1
+}
+
+eat=
+
+case $1 in
+  '')
+     echo "$0: No command.  Try '$0 --help' for more information." 1>&2
+     exit 1;
+     ;;
+  -h | --h*)
+    cat <<\EOF
+Usage: compile [--help] [--version] PROGRAM [ARGS]
+
+Wrapper for compilers which do not understand '-c -o'.
+Remove '-o dest.o' from ARGS, run PROGRAM with the remaining
+arguments, and rename the output as expected.
+
+If you are trying to build a whole package this is not the
+right script to run: please start by reading the file 'INSTALL'.
+
+Report bugs to <bug-automake@gnu.org>.
+EOF
+    exit $?
+    ;;
+  -v | --v*)
+    echo "compile $scriptversion"
+    exit $?
+    ;;
+  cl | *[/\\]cl | cl.exe | *[/\\]cl.exe )
+    func_cl_wrapper "$@"      # Doesn't return...
+    ;;
+esac
+
+ofile=
+cfile=
+
+for arg
+do
+  if test -n "$eat"; then
+    eat=
+  else
+    case $1 in
+      -o)
+	# configure might choose to run compile as 'compile cc -o foo foo.c'.
+	# So we strip '-o arg' only if arg is an object.
+	eat=1
+	case $2 in
+	  *.o | *.obj)
+	    ofile=$2
+	    ;;
+	  *)
+	    set x "$@" -o "$2"
+	    shift
+	    ;;
+	esac
+	;;
+      *.c)
+	cfile=$1
+	set x "$@" "$1"
+	shift
+	;;
+      *)
+	set x "$@" "$1"
+	shift
+	;;
+    esac
+  fi
+  shift
+done
+
+if test -z "$ofile" || test -z "$cfile"; then
+  # If no '-o' option was seen then we might have been invoked from a
+  # pattern rule where we don't need one.  That is ok -- this is a
+  # normal compilation that the losing compiler can handle.  If no
+  # '.c' file was seen then we are probably linking.  That is also
+  # ok.
+  exec "$@"
+fi
+
+# Name of file we expect compiler to create.
+cofile=`echo "$cfile" | sed 's|^.*[\\/]||; s|^[a-zA-Z]:||; s/\.c$/.o/'`
+
+# Create the lock directory.
+# Note: use '[/\\:.-]' here to ensure that we don't use the same name
+# that we are using for the .o file.  Also, base the name on the expected
+# object file name, since that is what matters with a parallel build.
+lockdir=`echo "$cofile" | sed -e 's|[/\\:.-]|_|g'`.d
+while true; do
+  if mkdir "$lockdir" >/dev/null 2>&1; then
+    break
+  fi
+  sleep 1
+done
+# FIXME: race condition here if user kills between mkdir and trap.
+trap "rmdir '$lockdir'; exit 1" 1 2 15
+
+# Run the compile.
+"$@"
+ret=$?
+
+if test -f "$cofile"; then
+  test "$cofile" = "$ofile" || mv "$cofile" "$ofile"
+elif test -f "${cofile}bj"; then
+  test "${cofile}bj" = "$ofile" || mv "${cofile}bj" "$ofile"
+fi
+
+rmdir "$lockdir"
+exit $ret
+
+# Local Variables:
+# mode: shell-script
+# sh-indentation: 2
+# eval: (add-hook 'write-file-hooks 'time-stamp)
+# time-stamp-start: "scriptversion="
+# time-stamp-format: "%:y-%02m-%02d.%02H"
+# time-stamp-time-zone: "UTC"
+# time-stamp-end: "; # UTC"
+# End:

config.guess

@@ -1,14 +1,12 @@
 #! /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
-#   Free Software Foundation, Inc.
+#   Copyright 1992-2013 Free Software Foundation, Inc.
 
-timestamp='2009-04-27'
+timestamp='2013-11-29'
 
 # 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
-# the Free Software Foundation; either version 2 of the License, or
+# the Free Software Foundation; either version 3 of the License, or
 # (at your option) any later version.
 #
 # This program is distributed in the hope that it will be useful, but
@@ -17,26 +15,22 @@ timestamp='2009-04-27'
 # 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
 # configuration script generated by Autoconf, you may include it under
-# the same distribution terms that you use for the rest of that program.
-
-
-# Originally written by Per Bothner <per@bothner.com>.
-# Please send patches to <config-patches@gnu.org>.  Submit a context
-# diff and a properly formatted ChangeLog entry.
+# the same distribution terms that you use for the rest of that
+# program.  This Exception is an additional permission under section 7
+# of the GNU General Public License, version 3 ("GPLv3").
 #
-# This script attempts to guess a canonical system name similar to
-# config.sub.  If it succeeds, it prints the system name on stdout, and
-# exits with 0.  Otherwise, it exits with 1.
+# Originally written by Per Bothner.
 #
-# The plan is that this can be called by configure scripts if you
-# don't specify an explicit build system type.
+# You can get the latest version of this script from:
+# http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=HEAD
+#
+# Please send patches with a ChangeLog entry to config-patches@gnu.org.
+
 
 me=`echo "$0" | sed -e 's,.*/,,'`
 
@@ -56,8 +50,7 @@ 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 1992-2013 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."
@@ -139,12 +132,33 @@ UNAME_RELEASE=`(uname -r) 2>/dev/null` || UNAME_RELEASE=unknown
 UNAME_SYSTEM=`(uname -s) 2>/dev/null`  || UNAME_SYSTEM=unknown
 UNAME_VERSION=`(uname -v) 2>/dev/null` || UNAME_VERSION=unknown
 
+case "${UNAME_SYSTEM}" in
+Linux|GNU|GNU/*)
+	# If the system lacks a compiler, then just pick glibc.
+	# We could probably try harder.
+	LIBC=gnu
+
+	eval $set_cc_for_build
+	cat <<-EOF > $dummy.c
+	#include <features.h>
+	#if defined(__UCLIBC__)
+	LIBC=uclibc
+	#elif defined(__dietlibc__)
+	LIBC=dietlibc
+	#else
+	LIBC=gnu
+	#endif
+	EOF
+	eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^LIBC'`
+	;;
+esac
+
 # Note: order is significant - the case branches are not exclusive.
 
 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
@@ -170,7 +184,7 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
 	    arm*|i386|m68k|ns32k|sh3*|sparc|vax)
 		eval $set_cc_for_build
 		if echo __ELF__ | $CC_FOR_BUILD -E - 2>/dev/null \
-			| grep __ELF__ >/dev/null
+			| grep -q __ELF__
 		then
 		    # Once all utilities can be ECOFF (netbsdecoff) or a.out (netbsdaout).
 		    # Return netbsd for either.  FIX?
@@ -180,7 +194,7 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
 		fi
 		;;
 	    *)
-	        os=netbsd
+		os=netbsd
 		;;
 	esac
 	# The OS release
@@ -201,6 +215,10 @@ case "${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 +241,7 @@ 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 $4}'`
 		;;
 	esac
 	# According to Compaq, /usr/sbin/psrinfo has been available on
@@ -269,7 +287,10 @@ case "${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 $exitcode ;;
     Alpha\ *:Windows_NT*:*)
 	# How do we know it's Interix rather than the generic POSIX subsystem?
 	# Should we change UNAME_MACHINE based on the output of uname instead
@@ -295,12 +316,12 @@ case "${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:*:*)
@@ -333,6 +354,9 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
     sun4*:SunOS:5.*:* | tadpole*:SunOS:5.*:*)
 	echo sparc-sun-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
 	exit ;;
+    i86pc:AuroraUX:5.*:* | i86xen:AuroraUX:5.*:*)
+	echo i386-pc-auroraux${UNAME_RELEASE}
+	exit ;;
     i86pc:SunOS:5.*:* | i86xen:SunOS:5.*:*)
 	eval $set_cc_for_build
 	SUN_ARCH="i386"
@@ -391,23 +415,23 @@ case "${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 ;;
@@ -477,8 +501,8 @@ 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 [ ${TARGET_BINARY_INTERFACE}x = m88kdguxelfx ] || \
@@ -491,7 +515,7 @@ EOF
 	else
 	    echo i586-dg-dgux${UNAME_RELEASE}
 	fi
- 	exit ;;
+	exit ;;
     M88*:DolphinOS:*:*)	# DolphinOS (SVR3)
 	echo m88k-dolphin-sysv3
 	exit ;;
@@ -548,7 +572,7 @@ 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 ${IBM_CPU_ID} | grep ' POWER' >/dev/null 2>&1; then
 		IBM_ARCH=rs6000
@@ -591,52 +615,52 @@ EOF
 	    9000/[678][0-9][0-9])
 		if [ -x /usr/bin/getconf ]; then
 		    sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null`
-                    sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null`
-                    case "${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
@@ -656,7 +680,7 @@ EOF
 	    # => hppa64-hp-hpux11.23
 
 	    if echo __LP64__ | (CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) |
-		grep __LP64__ >/dev/null
+		grep -q __LP64__
 	    then
 		HP_ARCH="hppa2.0w"
 	    else
@@ -727,22 +751,22 @@ EOF
 	exit ;;
     C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*)
 	echo c1-convex-bsd
-        exit ;;
+	exit ;;
     C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*)
 	if getsysinfo -f scalar_acc
 	then echo c32-convex-bsd
 	else echo c2-convex-bsd
 	fi
-        exit ;;
+	exit ;;
     C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*)
 	echo c34-convex-bsd
-        exit ;;
+	exit ;;
     C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*)
 	echo c38-convex-bsd
-        exit ;;
+	exit ;;
     C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*)
 	echo c4-convex-bsd
-        exit ;;
+	exit ;;
     CRAY*Y-MP:*:*:*)
 	echo ymp-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
 	exit ;;
@@ -766,14 +790,14 @@ 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}
@@ -785,34 +809,39 @@ 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*:[3456]*)
-    	case ${UNAME_MACHINE} in
+    *:Interix*:*)
+	case ${UNAME_MACHINE} in
 	    x86)
 		echo i586-pc-interix${UNAME_RELEASE}
 		exit ;;
-	    EM64T | authenticamd | genuineintel)
+	    authenticamd | genuineintel | EM64T)
 		echo x86_64-unknown-interix${UNAME_RELEASE}
 		exit ;;
 	    IA64)
@@ -822,6 +851,9 @@ EOF
     [345]86:Windows_95:* | [345]86:Windows_98:* | [345]86:Windows_NT:*)
 	echo i${UNAME_MACHINE}-pc-mks
 	exit ;;
+    8664:Windows_NT:*)
+	echo x86_64-pc-mks
+	exit ;;
     i*:Windows_NT*:* | Pentium*:Windows_NT*:*)
 	# How do we know it's Interix rather than the generic POSIX subsystem?
 	# It also conflicts with pre-2.0 versions of AT&T UWIN. Should we
@@ -842,100 +874,21 @@ EOF
 	exit ;;
     *:GNU:*:*)
 	# the GNU system
-	echo `echo ${UNAME_MACHINE}|sed -e 's,[-/].*$,,'`-unknown-gnu`echo ${UNAME_RELEASE}|sed -e 's,/.*$,,'`
+	echo `echo ${UNAME_MACHINE}|sed -e 's,[-/].*$,,'`-unknown-${LIBC}`echo ${UNAME_RELEASE}|sed -e 's,/.*$,,'`
 	exit ;;
     *:GNU/*:*:*)
 	# other systems with GNU libc and userland
-	echo ${UNAME_MACHINE}-unknown-`echo ${UNAME_SYSTEM} | sed 's,^[^/]*/,,' | tr '[A-Z]' '[a-z]'``echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`-gnu
+	echo ${UNAME_MACHINE}-unknown-`echo ${UNAME_SYSTEM} | sed 's,^[^/]*/,,' | tr '[A-Z]' '[a-z]'``echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`-${LIBC}
 	exit ;;
     i*86:Minix:*:*)
 	echo ${UNAME_MACHINE}-pc-minix
 	exit ;;
-    arm*:Linux:*:*)
-	eval $set_cc_for_build
-	if echo __ARM_EABI__ | $CC_FOR_BUILD -E - 2>/dev/null \
-	    | grep -q __ARM_EABI__
-	then
-	    echo ${UNAME_MACHINE}-unknown-linux-gnu
-	else
-	    echo ${UNAME_MACHINE}-unknown-linux-gnueabi
-	fi
+    aarch64:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
-    avr32*:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
-	exit ;;
-    cris:Linux:*:*)
-	echo cris-axis-linux-gnu
-	exit ;;
-    crisv32:Linux:*:*)
-	echo crisv32-axis-linux-gnu
-	exit ;;
-    frv:Linux:*:*)
-    	echo frv-unknown-linux-gnu
-	exit ;;
-    ia64:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
-	exit ;;
-    m32r*:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
-	exit ;;
-    m68*:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
-	exit ;;
-    mips:Linux:*:*)
-	eval $set_cc_for_build
-	sed 's/^	//' << EOF >$dummy.c
-	#undef CPU
-	#undef mips
-	#undef mipsel
-	#if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL)
-	CPU=mipsel
-	#else
-	#if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB)
-	CPU=mips
-	#else
-	CPU=
-	#endif
-	#endif
-EOF
-	eval "`$CC_FOR_BUILD -E $dummy.c 2>/dev/null | sed -n '
-	    /^CPU/{
-		s: ::g
-		p
-	    }'`"
-	test x"${CPU}" != x && { echo "${CPU}-unknown-linux-gnu"; exit; }
-	;;
-    mips64:Linux:*:*)
-	eval $set_cc_for_build
-	sed 's/^	//' << EOF >$dummy.c
-	#undef CPU
-	#undef mips64
-	#undef mips64el
-	#if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL)
-	CPU=mips64el
-	#else
-	#if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB)
-	CPU=mips64
-	#else
-	CPU=
-	#endif
-	#endif
-EOF
-	eval "`$CC_FOR_BUILD -E $dummy.c 2>/dev/null | sed -n '
-	    /^CPU/{
-		s: ::g
-		p
-	    }'`"
-	test x"${CPU}" != x && { echo "${CPU}-unknown-linux-gnu"; exit; }
-	;;
-    or32:Linux:*:*)
-	echo or32-unknown-linux-gnu
-	exit ;;
-    ppc:Linux:*:*)
-	echo powerpc-unknown-linux-gnu
-	exit ;;
-    ppc64:Linux:*:*)
-	echo powerpc64-unknown-linux-gnu
+    aarch64_be:Linux:*:*)
+	UNAME_MACHINE=aarch64_be
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
     alpha:Linux:*:*)
 	case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' < /proc/cpuinfo` in
@@ -946,106 +899,132 @@ EOF
 	  EV6)   UNAME_MACHINE=alphaev6 ;;
 	  EV67)  UNAME_MACHINE=alphaev67 ;;
 	  EV68*) UNAME_MACHINE=alphaev68 ;;
-        esac
-	objdump --private-headers /bin/sh | grep ld.so.1 >/dev/null
-	if test "$?" = 0 ; then LIBC="libc1" ; else LIBC="" ; fi
-	echo ${UNAME_MACHINE}-unknown-linux-gnu${LIBC}
+	esac
+	objdump --private-headers /bin/sh | grep -q ld.so.1
+	if test "$?" = 0 ; then LIBC="gnulibc1" ; fi
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    arc:Linux:*:* | arceb:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    arm*:Linux:*:*)
+	eval $set_cc_for_build
+	if echo __ARM_EABI__ | $CC_FOR_BUILD -E - 2>/dev/null \
+	    | grep -q __ARM_EABI__
+	then
+	    echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	else
+	    if echo __ARM_PCS_VFP | $CC_FOR_BUILD -E - 2>/dev/null \
+		| grep -q __ARM_PCS_VFP
+	    then
+		echo ${UNAME_MACHINE}-unknown-linux-${LIBC}eabi
+	    else
+		echo ${UNAME_MACHINE}-unknown-linux-${LIBC}eabihf
+	    fi
+	fi
+	exit ;;
+    avr32*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    cris:Linux:*:*)
+	echo ${UNAME_MACHINE}-axis-linux-${LIBC}
+	exit ;;
+    crisv32:Linux:*:*)
+	echo ${UNAME_MACHINE}-axis-linux-${LIBC}
+	exit ;;
+    frv:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    hexagon:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    i*86:Linux:*:*)
+	echo ${UNAME_MACHINE}-pc-linux-${LIBC}
+	exit ;;
+    ia64:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    m32r*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    m68*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    mips:Linux:*:* | mips64:Linux:*:*)
+	eval $set_cc_for_build
+	sed 's/^	//' << EOF >$dummy.c
+	#undef CPU
+	#undef ${UNAME_MACHINE}
+	#undef ${UNAME_MACHINE}el
+	#if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL)
+	CPU=${UNAME_MACHINE}el
+	#else
+	#if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB)
+	CPU=${UNAME_MACHINE}
+	#else
+	CPU=
+	#endif
+	#endif
+EOF
+	eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^CPU'`
+	test x"${CPU}" != x && { echo "${CPU}-unknown-linux-${LIBC}"; exit; }
+	;;
+    or1k:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    or32:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
     padre:Linux:*:*)
-	echo sparc-unknown-linux-gnu
+	echo sparc-unknown-linux-${LIBC}
+	exit ;;
+    parisc64:Linux:*:* | hppa64:Linux:*:*)
+	echo hppa64-unknown-linux-${LIBC}
 	exit ;;
     parisc:Linux:*:* | hppa:Linux:*:*)
 	# Look for CPU level
 	case `grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2` in
-	  PA7*) echo hppa1.1-unknown-linux-gnu ;;
-	  PA8*) echo hppa2.0-unknown-linux-gnu ;;
-	  *)    echo hppa-unknown-linux-gnu ;;
+	  PA7*) echo hppa1.1-unknown-linux-${LIBC} ;;
+	  PA8*) echo hppa2.0-unknown-linux-${LIBC} ;;
+	  *)    echo hppa-unknown-linux-${LIBC} ;;
 	esac
 	exit ;;
-    parisc64:Linux:*:* | hppa64:Linux:*:*)
-	echo hppa64-unknown-linux-gnu
+    ppc64:Linux:*:*)
+	echo powerpc64-unknown-linux-${LIBC}
+	exit ;;
+    ppc:Linux:*:*)
+	echo powerpc-unknown-linux-${LIBC}
+	exit ;;
+    ppc64le:Linux:*:*)
+	echo powerpc64le-unknown-linux-${LIBC}
+	exit ;;
+    ppcle:Linux:*:*)
+	echo powerpcle-unknown-linux-${LIBC}
 	exit ;;
     s390:Linux:*:* | s390x:Linux:*:*)
-	echo ${UNAME_MACHINE}-ibm-linux
+	echo ${UNAME_MACHINE}-ibm-linux-${LIBC}
 	exit ;;
     sh64*:Linux:*:*)
-    	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
     sh*:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
     sparc:Linux:*:* | sparc64:Linux:*:*)
-	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
+	exit ;;
+    tile*:Linux:*:*)
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
     vax:Linux:*:*)
-	echo ${UNAME_MACHINE}-dec-linux-gnu
+	echo ${UNAME_MACHINE}-dec-linux-${LIBC}
 	exit ;;
     x86_64:Linux:*:*)
-	echo x86_64-unknown-linux-gnu
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
     xtensa*:Linux:*:*)
-    	echo ${UNAME_MACHINE}-unknown-linux-gnu
+	echo ${UNAME_MACHINE}-unknown-linux-${LIBC}
 	exit ;;
-    i*86:Linux:*:*)
-	# The BFD linker knows what the default object file format is, so
-	# first see if it will tell us. cd to the root directory to prevent
-	# problems with other programs or directories called `ld' in the path.
-	# Set LC_ALL=C to ensure ld outputs messages in English.
-	ld_supported_targets=`cd /; LC_ALL=C ld --help 2>&1 \
-			 | sed -ne '/supported targets:/!d
-				    s/[ 	][ 	]*/ /g
-				    s/.*supported targets: *//
-				    s/ .*//
-				    p'`
-        case "$ld_supported_targets" in
-	  elf32-i386)
-		TENTATIVE="${UNAME_MACHINE}-pc-linux-gnu"
-		;;
-	  a.out-i386-linux)
-		echo "${UNAME_MACHINE}-pc-linux-gnuaout"
-		exit ;;
-	  "")
-		# Either a pre-BFD a.out linker (linux-gnuoldld) or
-		# one that does not give us useful --help.
-		echo "${UNAME_MACHINE}-pc-linux-gnuoldld"
-		exit ;;
-	esac
-	# Determine whether the default compiler is a.out or elf
-	eval $set_cc_for_build
-	sed 's/^	//' << EOF >$dummy.c
-	#include <features.h>
-	#ifdef __ELF__
-	# ifdef __GLIBC__
-	#  if __GLIBC__ >= 2
-	LIBC=gnu
-	#  else
-	LIBC=gnulibc1
-	#  endif
-	# else
-	LIBC=gnulibc1
-	# endif
-	#else
-	#if defined(__INTEL_COMPILER) || defined(__PGI) || defined(__SUNPRO_C) || defined(__SUNPRO_CC)
-	LIBC=gnu
-	#else
-	LIBC=gnuaout
-	#endif
-	#endif
-	#ifdef __dietlibc__
-	LIBC=dietlibc
-	#endif
-EOF
-	eval "`$CC_FOR_BUILD -E $dummy.c 2>/dev/null | sed -n '
-	    /^LIBC/{
-		s: ::g
-		p
-	    }'`"
-	test x"${LIBC}" != x && {
-		echo "${UNAME_MACHINE}-pc-linux-${LIBC}"
-		exit
-	}
-	test x"${TENTATIVE}" != x && { echo "${TENTATIVE}"; exit; }
-	;;
     i*86:DYNIX/ptx:4*:*)
 	# ptx 4.0 does uname -s correctly, with DYNIX/ptx in there.
 	# earlier versions are messed up and put the nodename in both
@@ -1053,11 +1032,11 @@ 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:*:*)
@@ -1074,7 +1053,7 @@ EOF
     i*86:syllable:*:*)
 	echo ${UNAME_MACHINE}-pc-syllable
 	exit ;;
-    i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.0*:*)
+    i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.[02]*:*)
 	echo i386-unknown-lynxos${UNAME_RELEASE}
 	exit ;;
     i*86:*DOS:*:*)
@@ -1089,7 +1068,7 @@ 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 ;;
@@ -1117,13 +1096,13 @@ 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 ;;
@@ -1158,8 +1137,8 @@ EOF
 	/bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
 	  && { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;;
     3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*)
-        /bin/uname -p 2>/dev/null | grep 86 >/dev/null \
-          && { echo i486-ncr-sysv4; exit; } ;;
+	/bin/uname -p 2>/dev/null | grep 86 >/dev/null \
+	  && { echo i486-ncr-sysv4; exit; } ;;
     NCR*:*:4.2:* | MPRAS*:*:4.2:*)
 	OS_REL='.3'
 	test -r /etc/.relid \
@@ -1182,7 +1161,7 @@ EOF
     rs6000:LynxOS:2.*:*)
 	echo rs6000-unknown-lynxos${UNAME_RELEASE}
 	exit ;;
-    PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.0*:*)
+    PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.[02]*:*)
 	echo powerpc-unknown-lynxos${UNAME_RELEASE}
 	exit ;;
     SM[BE]S:UNIX_SV:*:*)
@@ -1202,10 +1181,10 @@ EOF
 		echo ns32k-sni-sysv
 	fi
 	exit ;;
-    PENTIUM:*:4.0*:*) # Unisys `ClearPath HMP IX 4000' SVR4/MP effort
-                      # says <Richard.M.Bartel@ccMail.Census.GOV>
-        echo i586-unisys-sysv4
-        exit ;;
+    PENTIUM:*:4.0*:*)	# Unisys `ClearPath HMP IX 4000' SVR4/MP effort
+			# says <Richard.M.Bartel@ccMail.Census.GOV>
+	echo i586-unisys-sysv4
+	exit ;;
     *:UNIX_System_V:4*:FTX*)
 	# From Gerald Hewes <hewes@openmarket.com>.
 	# How about differentiating between stratus architectures? -djm
@@ -1231,11 +1210,11 @@ EOF
 	exit ;;
     R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*)
 	if [ -d /usr/nec ]; then
-	        echo mips-nec-sysv${UNAME_RELEASE}
+		echo mips-nec-sysv${UNAME_RELEASE}
 	else
-	        echo mips-unknown-sysv${UNAME_RELEASE}
+		echo mips-unknown-sysv${UNAME_RELEASE}
 	fi
-        exit ;;
+	exit ;;
     BeBox:BeOS:*:*)	# BeOS running on hardware made by Be, PPC only.
 	echo powerpc-be-beos
 	exit ;;
@@ -1248,6 +1227,9 @@ EOF
     BePC:Haiku:*:*)	# Haiku running on Intel PC compatible.
 	echo i586-pc-haiku
 	exit ;;
+    x86_64:Haiku:*:*)
+	echo x86_64-unknown-haiku
+	exit ;;
     SX-4:SUPER-UX:*:*)
 	echo sx4-nec-superux${UNAME_RELEASE}
 	exit ;;
@@ -1274,9 +1256,31 @@ EOF
 	exit ;;
     *:Darwin:*:*)
 	UNAME_PROCESSOR=`uname -p` || UNAME_PROCESSOR=unknown
-	case $UNAME_PROCESSOR in
-	    unknown) UNAME_PROCESSOR=powerpc ;;
-	esac
+	eval $set_cc_for_build
+	if test "$UNAME_PROCESSOR" = unknown ; then
+	    UNAME_PROCESSOR=powerpc
+	fi
+	if test `echo "$UNAME_RELEASE" | sed -e 's/\..*//'` -le 10 ; then
+	    if [ "$CC_FOR_BUILD" != 'no_compiler_found' ]; then
+		if (echo '#ifdef __LP64__'; echo IS_64BIT_ARCH; echo '#endif') | \
+		    (CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) | \
+		    grep IS_64BIT_ARCH >/dev/null
+		then
+		    case $UNAME_PROCESSOR in
+			i386) UNAME_PROCESSOR=x86_64 ;;
+			powerpc) UNAME_PROCESSOR=powerpc64 ;;
+		    esac
+		fi
+	    fi
+	elif test "$UNAME_PROCESSOR" = i386 ; then
+	    # Avoid executing cc on OS X 10.9, as it ships with a stub
+	    # that puts up a graphical alert prompting to install
+	    # developer tools.  Any system running Mac OS X 10.7 or
+	    # later (Darwin 11 and later) is required to have a 64-bit
+	    # processor. This is not true of the ARM version of Darwin
+	    # that Apple uses in portable devices.
+	    UNAME_PROCESSOR=x86_64
+	fi
 	echo ${UNAME_PROCESSOR}-apple-darwin${UNAME_RELEASE}
 	exit ;;
     *:procnto*:*:* | *:QNX:[0123456789]*:*)
@@ -1290,7 +1294,10 @@ 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:*:*)
@@ -1335,13 +1342,13 @@ 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 ;;
@@ -1359,11 +1366,11 @@ 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_
@@ -1381,11 +1388,11 @@ main ()
 #include <sys/param.h>
   printf ("m68k-sony-newsos%s\n",
 #ifdef NEWSOS4
-          "4"
+	"4"
 #else
-	  ""
+	""
 #endif
-         ); exit (0);
+	); exit (0);
 #endif
 #endif
 

config.sub

@@ -1,44 +1,40 @@
 #! /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
-#   Free Software Foundation, Inc.
+#   Copyright 1992-2013 Free Software Foundation, Inc.
 
-timestamp='2009-04-17'
+timestamp='2013-10-01'
 
-# This file is (in principle) common to ALL GNU software.
-# The presence of a machine in this file suggests that SOME GNU software
-# can handle that machine.  It does not imply ALL GNU software can.
-#
-# 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
-# the Free Software Foundation; either version 2 of the License, or
+# 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
+# the Free Software Foundation; either version 3 of the License, or
 # (at your option) any later version.
 #
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 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
 # configuration script generated by Autoconf, you may include it under
-# the same distribution terms that you use for the rest of that program.
+# the same distribution terms that you use for the rest of that
+# program.  This Exception is an additional permission under section 7
+# of the GNU General Public License, version 3 ("GPLv3").
 
 
-# Please send patches to <config-patches@gnu.org>.  Submit a context
-# diff and a properly formatted ChangeLog entry.
+# Please send patches with a ChangeLog entry to config-patches@gnu.org.
 #
 # Configuration subroutine to validate and canonicalize a configuration type.
 # Supply the specified configuration type as an argument.
 # If it is invalid, we print an error message on stderr and exit with code 1.
 # Otherwise, we print the canonical config type on stdout and succeed.
 
+# You can get the latest version of this script from:
+# http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub;hb=HEAD
+
 # This file is supposed to be the same for all GNU packages
 # and recognize all the CPU types, system types and aliases
 # that are meaningful with *any* GNU software.
@@ -72,8 +68,7 @@ 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 1992-2013 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."
@@ -120,13 +115,18 @@ 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 ]
@@ -149,10 +149,13 @@ 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)
+	-apple | -axis | -knuth | -cray | -microblaze*)
 		os=
 		basic_machine=$1
 		;;
+	-bluegene*)
+		os=-cnk
+		;;
 	-sim | -cisco | -oki | -wec | -winbond)
 		os=
 		basic_machine=$1
@@ -167,10 +170,10 @@ case $os in
 		os=-chorusos
 		basic_machine=$1
 		;;
- 	-chorusrdb)
- 		os=-chorusrdb
+	-chorusrdb)
+		os=-chorusrdb
 		basic_machine=$1
- 		;;
+		;;
 	-hiux*)
 		os=-hiuxwe2
 		;;
@@ -215,6 +218,12 @@ 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
 		;;
@@ -239,20 +248,28 @@ 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 | arceb \
+	| arm | arm[bl]e | arme[lb] | armv[2-8] | armv[3-8][lb] | armv7[arm] \
+	| avr | avr32 \
+	| be32 | be64 \
 	| bfin \
-	| c4x | clipper \
+	| c4x | c8051 | 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 \
+	| k1om \
+	| 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 \
@@ -270,32 +287,45 @@ case $basic_machine in
 	| mipsisa64r2 | mipsisa64r2el \
 	| mipsisa64sb1 | mipsisa64sb1el \
 	| mipsisa64sr71k | mipsisa64sr71kel \
+	| mipsr5900 | mipsr5900el \
 	| mipstx39 | mipstx39el \
 	| mn10200 | mn10300 \
 	| moxie \
 	| mt \
 	| msp430 \
-	| nios | nios2 \
+	| nds32 | nds32le | nds32be \
+	| nios | nios2 | nios2eb | nios2el \
 	| ns16k | ns32k \
-	| or32 \
+	| open8 \
+	| or1k | or32 \
 	| pdp10 | pdp11 | pj | pjl \
-	| powerpc | powerpc64 | powerpc64le | powerpcle | ppcbe \
+	| powerpc | powerpc64 | powerpc64le | powerpcle \
 	| pyramid \
+	| rl78 | rx \
 	| score \
 	| sh | sh[1234] | sh[24]a | sh[24]aeb | sh[23]e | sh[34]eb | sheb | shbe | shle | sh[1234]le | sh3ele \
 	| sh64 | sh64le \
 	| sparc | sparc64 | sparc64b | sparc64v | sparc86x | sparclet | sparclite \
 	| sparcv8 | sparcv9 | sparcv9b | sparcv9v \
-	| spu | strongarm \
-	| tahoe | thumb | tic4x | tic80 | tron \
-	| v850 | v850e \
+	| spu \
+	| tahoe | tic4x | tic54x | tic55x | tic6x | tic80 | tron \
+	| ubicom32 \
+	| v850 | v850e | v850e1 | v850e2 | v850es | v850e2v3 \
 	| we32k \
-	| x86 | xc16x | xscale | xscalee[bl] | xstormy16 | xtensa \
+	| x86 | xc16x | xstormy16 | xtensa \
 	| z8k | z80)
 		basic_machine=$basic_machine-unknown
 		;;
-	m6811 | m68hc11 | m6812 | m68hc12)
-		# Motorola 68HC11/12.
+	c54x)
+		basic_machine=tic54x-unknown
+		;;
+	c55x)
+		basic_machine=tic55x-unknown
+		;;
+	c6x)
+		basic_machine=tic6x-unknown
+		;;
+	m6811 | m68hc11 | m6812 | m68hc12 | m68hcs12x | nvptx | picochip)
 		basic_machine=$basic_machine-unknown
 		os=-none
 		;;
@@ -305,6 +335,21 @@ 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.
@@ -319,25 +364,31 @@ 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-* \
+	| alphapca5[67]-* | alpha64pca5[67]-* | arc-* | arceb-* \
 	| arm-*  | armbe-* | armle-* | armeb-* | armv*-* \
 	| avr-* | avr32-* \
+	| be32-* | be64-* \
 	| bfin-* | bs2000-* \
-	| c[123]* | c30-* | [cjt]90-* | c4x-* | c54x-* | c55x-* | c6x-* \
-	| clipper-* | craynv-* | cydra-* \
+	| c[123]* | c30-* | [cjt]90-* | c4x-* \
+	| c8051-* | 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-* \
+	| k1om-* \
+	| le32-* | le64-* \
 	| lm32-* \
 	| m32c-* | m32r-* | m32rle-* \
 	| m68000-* | m680[012346]0-* | m68360-* | m683?2-* | m68k-* \
 	| m88110-* | m88k-* | maxq-* | mcore-* | metag-* \
+	| microblaze-* | microblazeel-* \
 	| mips-* | mipsbe-* | mipseb-* | mipsel-* | mipsle-* \
 	| mips16-* \
 	| mips64-* | mips64el-* \
@@ -355,28 +406,34 @@ case $basic_machine in
 	| mipsisa64r2-* | mipsisa64r2el-* \
 	| mipsisa64sb1-* | mipsisa64sb1el-* \
 	| mipsisa64sr71k-* | mipsisa64sr71kel-* \
+	| mipsr5900-* | mipsr5900el-* \
 	| mipstx39-* | mipstx39el-* \
 	| mmix-* \
 	| mt-* \
 	| msp430-* \
-	| nios-* | nios2-* \
+	| nds32-* | nds32le-* | nds32be-* \
+	| nios-* | nios2-* | nios2eb-* | nios2el-* \
 	| none-* | np1-* | ns16k-* | ns32k-* \
+	| open8-* \
 	| orion-* \
 	| pdp10-* | pdp11-* | pj-* | pjl-* | pn-* | power-* \
-	| powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* | ppcbe-* \
+	| powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* \
 	| pyramid-* \
-	| romp-* | rs6000-* \
+	| 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-* \
-	| v850-* | v850e-* | vax-* \
+	| ubicom32-* \
+	| 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-*)
@@ -401,7 +458,7 @@ case $basic_machine in
 		basic_machine=a29k-amd
 		os=-udi
 		;;
-    	abacus)
+	abacus)
 		basic_machine=abacus-unknown
 		;;
 	adobe68k)
@@ -467,11 +524,24 @@ case $basic_machine in
 		basic_machine=bfin-`echo $basic_machine | sed 's/^[^-]*-//'`
 		os=-linux
 		;;
+	bluegene*)
+		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
 		;;
@@ -503,7 +573,7 @@ case $basic_machine in
 		basic_machine=craynv-cray
 		os=-unicosmp
 		;;
-	cr16)
+	cr16 | cr16-*)
 		basic_machine=cr16-unknown
 		os=-elf
 		;;
@@ -661,7 +731,6 @@ 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
@@ -719,8 +788,15 @@ case $basic_machine in
 		basic_machine=ns32k-utek
 		os=-sysv
 		;;
+	microblaze*)
+		basic_machine=microblaze-xilinx
+		;;
+	mingw64)
+		basic_machine=x86_64-pc
+		os=-mingw64
+		;;
 	mingw32)
-		basic_machine=i386-pc
+		basic_machine=i686-pc
 		os=-mingw32
 		;;
 	mingw32ce)
@@ -755,10 +831,18 @@ case $basic_machine in
 	ms1-*)
 		basic_machine=`echo $basic_machine | sed -e 's/ms1-/mt-/'`
 		;;
+	msys)
+		basic_machine=i686-pc
+		os=-msys
+		;;
 	mvs)
 		basic_machine=i370-ibm
 		os=-mvs
 		;;
+	nacl)
+		basic_machine=le32-unknown
+		os=-nacl
+		;;
 	ncr3000)
 		basic_machine=i486-ncr
 		os=-sysv4
@@ -823,6 +907,12 @@ 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
 		;;
@@ -905,9 +995,10 @@ 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
@@ -932,7 +1023,11 @@ case $basic_machine in
 		basic_machine=i586-unknown
 		os=-pw32
 		;;
-	rdos)
+	rdos | rdos64)
+		basic_machine=x86_64-pc
+		os=-rdos
+		;;
+	rdos32)
 		basic_machine=i386-pc
 		os=-rdos
 		;;
@@ -1001,6 +1096,9 @@ 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
 		;;
@@ -1057,20 +1155,8 @@ 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)
@@ -1140,6 +1226,9 @@ case $basic_machine in
 	xps | xps100)
 		basic_machine=xps100-honeywell
 		;;
+	xscale-* | xscalee[bl]-*)
+		basic_machine=`echo $basic_machine | sed 's/^xscale/arm/'`
+		;;
 	ymp)
 		basic_machine=ymp-cray
 		os=-unicos
@@ -1237,9 +1326,12 @@ esac
 if [ x"$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
+		;;
 	-solaris1 | -solaris1.*)
 		os=`echo $os | sed -e 's|solaris1|sunos4|'`
 		;;
@@ -1260,22 +1352,23 @@ case $os in
 	# Each alternative MUST END IN A *, to match a version number.
 	# -sysv* is not here because it comes later, after sysvr4.
 	-gnu* | -bsd* | -mach* | -minix* | -genix* | -ultrix* | -irix* \
-	      | -*vms* | -sco* | -esix* | -isc* | -aix* | -sunos | -sunos[34]*\
-	      | -hpux* | -unos* | -osf* | -luna* | -dgux* | -solaris* | -sym* \
-	      | -kopensolaris* \
+	      | -*vms* | -sco* | -esix* | -isc* | -aix* | -cnk* | -sunos | -sunos[34]*\
+	      | -hpux* | -unos* | -osf* | -luna* | -dgux* | -auroraux* | -solaris* \
+	      | -sym* | -kopensolaris* | -plan9* \
 	      | -amigaos* | -amigados* | -msdos* | -newsos* | -unicos* | -aof* \
 	      | -aos* | -aros* \
 	      | -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* \
@@ -1283,7 +1376,7 @@ case $os in
 	      | -os2* | -vos* | -palmos* | -uclinux* | -nucleus* \
 	      | -morphos* | -superux* | -rtmk* | -rtmk-nova* | -windiss* \
 	      | -powermax* | -dnix* | -nx6 | -nx7 | -sei* | -dragonfly* \
-	      | -skyos* | -haiku* | -rdos* | -toppers* | -drops*)
+	      | -skyos* | -haiku* | -rdos* | -toppers* | -drops* | -es*)
 	# Remember, each alternative MUST END IN *, to match a version number.
 		;;
 	-qnx*)
@@ -1322,7 +1415,7 @@ case $os in
 	-opened*)
 		os=-openedition
 		;;
-        -os400*)
+	-os400*)
 		os=-os400
 		;;
 	-wince*)
@@ -1371,7 +1464,7 @@ case $os in
 	-sinix*)
 		os=-sysv4
 		;;
-        -tpf*)
+	-tpf*)
 		os=-tpf
 		;;
 	-triton*)
@@ -1407,15 +1500,14 @@ case $os in
 	-aros*)
 		os=-aros
 		;;
-	-kaos*)
-		os=-kaos
-		;;
 	-zvmoe)
 		os=-zvmoe
 		;;
 	-dicos*)
 		os=-dicos
 		;;
+	-nacl*)
+		;;
 	-none)
 		;;
 	*)
@@ -1438,10 +1530,10 @@ else
 # system, and we'll never get to this point.
 
 case $basic_machine in
-        score-*)
+	score-*)
 		os=-elf
 		;;
-        spu-*)
+	spu-*)
 		os=-elf
 		;;
 	*-acorn)
@@ -1453,8 +1545,23 @@ case $basic_machine in
 	arm*-semi)
 		os=-aout
 		;;
-        c4x-* | tic4x-*)
-        	os=-coff
+	c4x-* | tic4x-*)
+		os=-coff
+		;;
+	c8051-*)
+		os=-elf
+		;;
+	hexagon-*)
+		os=-elf
+		;;
+	tic54x-*)
+		os=-coff
+		;;
+	tic55x-*)
+		os=-coff
+		;;
+	tic6x-*)
+		os=-coff
 		;;
 	# This must come before the *-dec entry.
 	pdp10-*)
@@ -1474,14 +1581,11 @@ 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)
@@ -1490,6 +1594,9 @@ case $basic_machine in
 	mips*-*)
 		os=-elf
 		;;
+	or1k-*)
+		os=-elf
+		;;
 	or32-*)
 		os=-coff
 		;;
@@ -1508,7 +1615,7 @@ case $basic_machine in
 	*-ibm)
 		os=-aix
 		;;
-    	*-knuth)
+	*-knuth)
 		os=-mmixware
 		;;
 	*-wec)
@@ -1613,7 +1720,7 @@ case $basic_machine in
 			-sunos*)
 				vendor=sun
 				;;
-			-aix*)
+			-cnk*|-aix*)
 				vendor=ibm
 				;;
 			-beos*)

configure.ac

@@ -18,20 +18,20 @@ AC_PREREQ(2.59)
 
 dnl Version number stuff here:
 
-AC_INIT([libpng], [1.0.52rc01], [png-mng-implement@lists.sourceforge.net])
+AC_INIT([libpng], [1.2.51], [png-mng-implement@lists.sourceforge.net])
 AM_INIT_AUTOMAKE
 dnl stop configure from automagically running automake
 AM_MAINTAINER_MODE
 
-PNGLIB_VERSION=1.0.52rc01
+PNGLIB_VERSION=1.2.51
 PNGLIB_MAJOR=1
-PNGLIB_MINOR=0
-PNGLIB_RELEASE=52
+PNGLIB_MINOR=2
+PNGLIB_RELEASE=51
 
 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_PROG_CC
@@ -59,7 +59,12 @@ AC_CHECK_FUNCS([memset], , AC_ERROR([memset not found in libc]))
 AC_CHECK_FUNCS([pow], , AC_CHECK_LIB(m, pow, , AC_ERROR([cannot find pow])) )
 AC_CHECK_LIB(z, zlibVersion, , AC_ERROR([zlib not installed]))
 
-LIBPNG_DEFINES=-DPNG_CONFIGURE_LIBPNG
+case $host_os in
+  aix*)
+   LIBPNG_DEFINES=-DPNG_CONFIGURE_LIBPNG -D_ALL_SOURCE;;
+  *)
+   LIBPNG_DEFINES=-DPNG_CONFIGURE_LIBPNG;;
+esac
 AC_MSG_CHECKING(
   [if assembler code in pnggccrd.c can be compiled without PNG_NO_MMX_CODE])
 AC_TRY_COMPILE(

contrib/gregbook/readpng.c

@@ -214,6 +214,10 @@ uch *readpng_get_image(double display_exponent, int *pChannels, ulg *pRowbytes)
      * libpng function */
 
     if (setjmp(png_jmpbuf(png_ptr))) {
+        free(image_data);
+        image_data = NULL;
+        free(row_pointers);
+        row_pointers = NULL;
         png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
         return NULL;
     }

contrib/pngminim/decoder/README

@@ -0,0 +1,9 @@
+This demonstrates the use of PNG_USER_CONFIG and pngusr.h
+
+To build a minimal read-only decoder with embedded libpng and zlib, run
+
+    gather.sh  # to collect needed files from pngminus, libpng, and zlib
+    make
+
+If you prefer to use the shared libraries, go to contrib/pngminus
+and build the png2pnm application there. 

contrib/pngminim/decoder/gather.sh

@@ -0,0 +1,9 @@
+cp ../../pngminus/png2pnm.c pngm2pnm.c
+cp ../../../*.h .
+cp ../../../*.c .
+rm pnggccrd.c pngvcrd.c
+rm example.c pngtest.c pngpread.c pngw*.c
+# change the following 2 lines if zlib is somewhere else
+cp ../../../../zlib/*.h .
+cp ../../../../zlib/*.c .
+rm minigzip.c example.c compress.c deflate.c gz*

contrib/pngminim/decoder/makefile

@@ -0,0 +1,44 @@
+# Makefile for PngMinus (pngm2pnm)
+# Linux / Unix
+
+#CC=cc
+CC=gcc
+LD=$(CC)
+
+RM=rm -f
+
+CFLAGS=-DPNG_USER_CONFIG -DNO_GZCOMPRESS -DNO_GZIP -DZ_SOLO \
+       -DdeflateParams\(a,b,c\)=Z_OK -I. -O1
+
+C=.c
+O=.o
+L=.a
+E=
+
+ZOBJS  = adler32$(O) crc32$(O) \
+	 infback$(O) inffast$(O) inflate$(O) inftrees$(O) \
+	 trees$(O) uncompr$(O) zutil$(O)
+
+OBJS  = pngm2pnm$(O) png$(O) pngerror$(O) pngget$(O) pngmem$(O) \
+	pngread$(O) pngrio$(O) pngrtran$(O) pngrutil$(O) \
+	pngset$(O) pngtrans$(O)  $(ZOBJS)
+
+# implicit make rules -------------------------------------------------------
+
+.c$(O): png.h pngconf.h pngusr.h zlib.h
+	$(CC) -c $(CFLAGS) $<
+
+# dependencies
+
+all: pngm2pnm$(E)
+
+pngm2pnm$(E): $(OBJS)
+	$(LD) -o pngm2pnm$(E) $(OBJS)
+	strip pngm2pnm$(E)
+
+clean:
+	$(RM) pngm2pnm$(O)
+	$(RM) pngm2pnm$(E)
+	$(RM) $(OBJS)
+
+# End of makefile for pngm2pnm

contrib/pngminim/decoder/pngusr.h

@@ -0,0 +1,78 @@
+/* minrdpngconf.h: headers to make a minimal png-read-only library
+ *
+ * Copyright (c) 2007, 2009 Glenn Randers-Pehrson
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ *
+ * Derived from pngcrush.h, Copyright 1998-2007, Glenn Randers-Pehrson
+ */
+
+#ifndef MINRDPNGCONF_H
+#define MINRDPNGCONF_H
+
+#ifdef NJET
+  /* No 16-bit support beyond reading with strip_16 */
+#endif
+
+#define PNG_NO_GLOBAL_ARRAYS
+
+#define PNG_NO_WARNINGS
+#define png_warning(s1,s2) ""
+#define png_chunk_warning(s1,s2) ""
+#define PNG_NO_ERROR_TEXT
+#define png_error(s1,s2) png_err(s1)
+#define png_chunk_error(s1,s2) png_err(s1)
+
+#define PNG_NO_ASSEMBLER_CODE
+#define PNG_NO_OPTIMIZED_CODE
+#define PNG_NO_READ_GAMMA
+#define PNG_NO_READ_BACKGROUND
+#define PNG_NO_READ_DITHER
+#define PNG_NO_READ_INVERT
+#define PNG_NO_READ_SHIFT
+#define PNG_NO_READ_PACK
+#define PNG_NO_READ_PACKSWAP
+#define PNG_NO_READ_FILLER
+#define PNG_NO_READ_SWAP
+#define PNG_NO_READ_SWAP_ALPHA
+#define PNG_NO_READ_INVERT_ALPHA
+#define PNG_NO_READ_RGB_TO_GRAY
+#define PNG_NO_READ_USER_TRANSFORM
+#define PNG_NO_READ_bKGD
+#define PNG_NO_READ_cHRM
+#define PNG_NO_READ_gAMA
+#define PNG_NO_READ_hIST
+#define PNG_NO_READ_iCCP
+#define PNG_NO_READ_pCAL
+#define PNG_NO_READ_pHYs
+#define PNG_NO_READ_sBIT
+#define PNG_NO_READ_sCAL
+#define PNG_NO_READ_sPLT
+#define PNG_NO_READ_sRGB
+#define PNG_NO_READ_TEXT
+#define PNG_NO_READ_tIME
+#define PNG_NO_READ_UNKNOWN_CHUNKS
+#define PNG_NO_READ_USER_CHUNKS
+#define PNG_NO_READ_EMPTY_PLTE
+#define PNG_NO_READ_OPT_PLTE
+#define PNG_NO_READ_STRIP_ALPHA
+#define PNG_NO_READ_oFFs
+#define PNG_NO_WARN_UNINITIALIZED_ROW
+
+#define PNG_NO_WRITE_SUPPORTED
+
+#define PNG_NO_INFO_IMAGE
+#define PNG_NO_USER_MEM
+#define PNG_NO_FIXED_POINT_SUPPORTED
+#define PNG_NO_MNG_FEATURES
+#define PNG_NO_USER_TRANSFORM_PTR
+#define PNG_NO_HANDLE_AS_UNKNOWN
+#define PNG_NO_CONSOLE_IO
+#define PNG_NO_ZALLOC_ZERO
+#define PNG_NO_ERROR_NUMBERS
+#define PNG_NO_EASY_ACCESS
+#define PNG_NO_PROGRESSIVE_READ
+
+#endif /* MINRDPNGCONF_H */

contrib/pngminim/encoder/README

@@ -0,0 +1,9 @@
+This demonstrates the use of PNG_USER_CONFIG and pngusr.h
+
+To build a minimal write-only encoder with embedded libpng and zlib, run
+
+    gather.sh  # to collect needed files from pngminus, libpng, and zlib
+    make
+ 
+If you prefer to use the shared libraries, go to contrib/pngminus
+and build the pnm2png application there.

contrib/pngminim/encoder/dummy_inflate.c

@@ -0,0 +1,27 @@
+#include "zlib.h"
+
+int ZEXPORT inflate(strm, flush)
+z_streamp strm;
+int flush;
+{ return Z_OK ; }
+
+int ZEXPORT inflateReset(strm)
+z_streamp strm;
+{ return Z_OK ; }
+
+int ZEXPORT inflateEnd(strm)
+z_streamp strm;
+{ return Z_STREAM_ERROR ; }
+
+int ZEXPORT inflateInit_(strm, version, stream_size)
+z_streamp strm;
+const char *version;
+int stream_size;
+{ return Z_OK ; }
+
+int ZEXPORT inflateInit2_(strm, windowBits, version, stream_size)
+z_streamp strm;
+int windowBits;
+const char *version;
+int stream_size;
+{ return Z_STREAM_ERROR ; }

contrib/pngminim/encoder/gather.sh

@@ -0,0 +1,10 @@
+cp ../../pngminus/pnm2png.c pnm2pngm.c
+cp ../../../*.h .
+cp ../../../*.c .
+rm pnggccrd.c pngvcrd.c
+rm example.c pngtest.c pngr*.c pngpread.c
+# Change the next 2 lines if zlib is somewhere else.
+cp ../../../../zlib/*.h .
+cp ../../../../zlib/*.c .
+rm inf*.[ch]
+rm minigzip.c example.c gz*

contrib/pngminim/encoder/makefile

@@ -0,0 +1,43 @@
+# Makefile for PngMinus (pnm2pngm)
+# Linux / Unix
+
+#CC=cc
+CC=gcc
+LD=$(CC)
+
+RM=rm -f
+
+CFLAGS=-DPNG_USER_CONFIG -DNO_GZIP -DZ_SOLO -I. -O1
+
+C=.c
+O=.o
+L=.a
+E=
+
+ZOBJS  = adler32$(O) compress$(O) crc32$(O) deflate$(O) \
+	 dummy_inflate$(O) \
+	 trees$(O) uncompr$(O) zutil$(O)
+
+OBJS  = pnm2pngm$(O) png$(O) pngerror$(O) pngget$(O) pngmem$(O) \
+	pngset$(O) pngtrans$(O) pngwio$(O) pngwrite$(O) \
+	pngwtran$(O) pngwutil$(O) $(ZOBJS)
+
+# implicit make rules -------------------------------------------------------
+
+.c$(O): png.h pngconf.h pngusr.h zlib.h
+	$(CC) -c $(CFLAGS) $<
+
+# dependencies
+
+all: pnm2pngm$(E)
+
+pnm2pngm$(E): $(OBJS)
+	$(LD) -o pnm2pngm$(E) $(OBJS)
+	strip pnm2pngm$(E)
+
+clean:
+	$(RM) pnm2pngm$(O)
+	$(RM) pnm2pngm$(E)
+	$(RM) $(OBJS)
+
+# End of makefile for pnm2pngm

contrib/pngminim/encoder/pngusr.h

@@ -0,0 +1,73 @@
+/* minwrpngconf.h: headers to make a minimal png-write-only library
+ *
+ * Copyright (c) 2007, 2009 Glenn Randers-Pehrson
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ *
+ * Derived from pngcrush.h, Copyright 1998-2007, Glenn Randers-Pehrson
+ */
+
+#ifndef MINWRPNGCONF_H
+#define MINWRPNGCONF_H
+
+#define PNG_NO_GLOBAL_ARRAYS
+
+#define PNG_NO_READ_SUPPORTED
+
+#define PNG_NO_WARNINGS
+#define png_warning(s1,s2) ""
+#define png_chunk_warning(s1,s2) ""
+#define PNG_NO_ERROR_TEXT
+#define png_error(s1,s2) png_err(s1)
+#define png_chunk_error(s1,s2) png_err(s1)
+
+#define PNG_NO_WRITE_BACKGROUND
+#define PNG_NO_WRITE_GAMMA
+#define PNG_NO_WRITE_DITHER
+#define PNG_NO_WRITE_INVERT
+#define PNG_NO_WRITE_SHIFT
+#define PNG_NO_WRITE_PACK
+#define PNG_NO_WRITE_PACKSWAP
+#define PNG_NO_WRITE_FILLER
+#define PNG_NO_WRITE_SWAP
+#define PNG_NO_WRITE_SWAP_ALPHA
+#define PNG_NO_WRITE_INVERT_ALPHA
+#define PNG_NO_WRITE_RGB_TO_GRAY
+#define PNG_NO_WRITE_USER_TRANSFORM
+#define PNG_NO_WRITE_bKGD
+#define PNG_NO_WRITE_cHRM
+#define PNG_NO_WRITE_gAMA
+#define PNG_NO_WRITE_hIST
+#define PNG_NO_WRITE_iCCP
+#define PNG_NO_WRITE_oFFs
+#define PNG_NO_WRITE_pCAL
+#define PNG_NO_WRITE_pHYs
+#define PNG_NO_WRITE_sBIT
+#define PNG_NO_WRITE_sCAL
+#define PNG_NO_WRITE_sPLT
+#define PNG_NO_WRITE_sRGB
+#define PNG_NO_WRITE_TEXT
+#define PNG_NO_WRITE_tIME
+#define PNG_NO_WRITE_UNKNOWN_CHUNKS
+#define PNG_NO_WRITE_USER_CHUNKS
+#define PNG_NO_WRITE_EMPTY_PLTE
+#define PNG_NO_WRITE_OPT_PLTE
+#define PNG_NO_WRITE_FILTER
+#define PNG_NO_WRITE_WEIGHTED_FILTER
+#define PNG_NO_WRITE_INTERLACING_SUPPORTED
+#define PNG_NO_WRITE_FLUSH
+
+#define PNG_NO_INFO_IMAGE
+#define PNG_NO_USER_MEM
+#define PNG_NO_FIXED_POINT_SUPPORTED
+#define PNG_NO_MNG_FEATURES
+#define PNG_NO_USER_TRANSFORM_PTR
+#define PNG_NO_HANDLE_AS_UNKNOWN
+#define PNG_NO_CONSOLE_IO
+#define PNG_NO_ZALLOC_ZERO
+#define PNG_NO_ERROR_NUMBERS
+#define PNG_NO_EASY_ACCESS
+
+#endif /* MINWRPNGCONF_H */

contrib/pngminim/preader/README

@@ -0,0 +1,14 @@
+This demonstrates the use of PNG_USER_CONFIG and pngusr.h
+
+To build a minimal read-only progressive decoder embedded libpng and
+zlib and with your system's X library, run
+
+    gather.sh # to collect needed files from gregbook, libpng, and zlib
+
+Edit makefile if required, to find your X library and include files,
+then
+    
+    make
+ 
+If you prefer to use the shared libraries, go to contrib/gregbook
+and build the rpng2-x application there. 

contrib/pngminim/preader/gather.sh

@@ -0,0 +1,10 @@
+cp ../../gregbook/rpng2-x.c ../../gregbook/readpng2.[ch] .
+cp ../../gregbook/COPYING ../../gregbook/LICENSE .
+cp ../../../*.h .
+cp ../../../*.c .
+rm pnggccrd.c pngvcrd.c
+rm example.c pngtest.c pngw*.c
+# change the following 2 lines if zlib is somewhere else
+cp ../../../../zlib/*.h .
+cp ../../../../zlib/*.c .
+rm minigzip.c example.c compress.c deflate.c gz*

contrib/pngminim/preader/makefile

@@ -0,0 +1,60 @@
+# Makefile for PngMinus (rpng2)
+# Linux / Unix
+
+#CC=cc
+CC=gcc
+LD=$(CC)
+
+RM=rm -f
+
+#XINC = -I/usr/include			# old-style, stock X distributions
+#XLIB = -L/usr/lib/X11 -lX11		#  (including SGI IRIX)
+
+#XINC = -I/usr/openwin/include		# Sun workstations (OpenWindows)
+#XLIB = -L/usr/openwin/lib -lX11
+
+XINC = -I/usr/X11R6/include		# new X distributions (X.org, etc.)
+XLIB = -L/usr/X11R6/lib -lX11
+#XLIB = -L/usr/X11R6/lib64 -lX11	# e.g., Red Hat on AMD64
+
+#XINC = -I/usr/local/include   		# FreeBSD
+#XLIB = -L/usr/local/lib -lX11
+
+#LIBS = $(XLIB)
+LIBS = $(XLIB) -lm                      #platforms that need libm
+
+CFLAGS=-DPNG_USER_CONFIG -DNO_GZCOMPRESS -DNO_GZIP -DZ_SOLO \
+       -DdeflateParams\(a,b,c\)=Z_OK -I. $(XINC) -O1
+
+C=.c
+O=.o
+L=.a
+E=
+
+ZOBJS  = adler32$(O) crc32$(O) \
+	 infback$(O) inffast$(O) inflate$(O) inftrees$(O) \
+	 trees$(O) uncompr$(O) zutil$(O)
+
+OBJS  = rpng2-x$(O) readpng2$(O) png$(O) pngerror$(O) pngget$(O) pngmem$(O) \
+	pngpread$(O) pngread$(O) pngrio$(O) pngrtran$(O) pngrutil$(O) \
+	pngset$(O) pngtrans$(O)  $(ZOBJS)
+
+# implicit make rules -------------------------------------------------------
+
+.c$(O): png.h pngconf.h readpng2.h pngusr.h zlib.h
+	$(CC) -c $(CFLAGS) $<
+
+# dependencies
+
+all: rpng2-x$(E)
+
+rpng2-x$(E): $(OBJS)
+	$(LD) -o rpng2-x$(E) $(OBJS) $(LIBS)
+	strip rpng2-x$(E)
+
+clean:
+	$(RM) rpng2-x$(O)
+	$(RM) rpng2-x$(E)
+	$(RM) $(OBJS)
+
+# End of makefile for rpng2-x

contrib/pngminim/preader/pngusr.h

@@ -0,0 +1,68 @@
+/* minrdpngconf.h: headers to make a minimal png-read-only library
+ *
+ * Copyright (c) 2009 Glenn Randers-Pehrson
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ *
+ * Derived from pngcrush.h, Copyright 1998-2007, Glenn Randers-Pehrson
+ */
+
+#ifndef MINPRDPNGCONF_H
+#define MINPRDPNGCONF_H
+
+#define PNG_NO_GLOBAL_ARRAYS
+
+#define PNG_NO_WARNINGS
+#define png_warning(s1,s2) ""
+#define png_chunk_warning(s1,s2) ""
+#define PNG_NO_ERROR_TEXT
+#define png_error(s1,s2) png_err(s1)
+#define png_chunk_error(s1,s2) png_err(s1)
+
+#define PNG_NO_ASSEMBLER_CODE
+#define PNG_NO_OPTIMIZED_CODE
+#define PNG_NO_READ_DITHER
+#define PNG_NO_READ_INVERT
+#define PNG_NO_READ_SHIFT
+#define PNG_NO_READ_PACK
+#define PNG_NO_READ_PACKSWAP
+#define PNG_NO_READ_FILLER
+#define PNG_NO_READ_SWAP
+#define PNG_NO_READ_SWAP_ALPHA
+#define PNG_NO_READ_INVERT_ALPHA
+#define PNG_NO_READ_RGB_TO_GRAY
+#define PNG_NO_READ_USER_TRANSFORM
+#define PNG_NO_READ_cHRM
+#define PNG_NO_READ_hIST
+#define PNG_NO_READ_iCCP
+#define PNG_NO_READ_pCAL
+#define PNG_NO_READ_pHYs
+#define PNG_NO_READ_sBIT
+#define PNG_NO_READ_sCAL
+#define PNG_NO_READ_sPLT
+#define PNG_NO_READ_TEXT
+#define PNG_NO_READ_tIME
+#define PNG_NO_READ_UNKNOWN_CHUNKS
+#define PNG_NO_READ_USER_CHUNKS
+#define PNG_NO_READ_EMPTY_PLTE
+#define PNG_NO_READ_OPT_PLTE
+#define PNG_NO_READ_STRIP_ALPHA
+#define PNG_NO_READ_oFFs
+#define PNG_NO_WARN_UNINITIALIZED_ROW
+
+#define PNG_NO_WRITE_SUPPORTED
+
+#define PNG_NO_INFO_IMAGE
+#define PNG_NO_USER_MEM
+#define PNG_NO_FIXED_POINT_SUPPORTED
+#define PNG_NO_MNG_FEATURES
+#define PNG_NO_USER_TRANSFORM_PTR
+#define PNG_NO_HANDLE_AS_UNKNOWN
+#define PNG_NO_CONSOLE_IO
+#define PNG_NO_ZALLOC_ZERO
+#define PNG_NO_ERROR_NUMBERS
+#define PNG_NO_EASY_ACCESS
+
+#endif /* MINPRDPNGCONF_H */

contrib/pngminus/makefile.std

@@ -23,9 +23,9 @@ ZINC = -I../../../zlib
 ZLIB = -L../../../zlib -lz
 ZLIBS = ../../../zlib/libz.a
 
-CFLAGS=-O3 $(PNGINC) $(ZINC)
-LDFLAGS=$(PNGLIB) $(ZLIB)
-LDFLAGSS=$(PNGLIBS) $(ZLIBS)
+CFLAGS=$(PNGINC) $(ZINC)
+LDLIBS=$(PNGLIB) $(ZLIB)
+LDLIBSS=$(PNGLIBS) $(ZLIBS)
 C=.c
 O=.o
 L=.a
@@ -40,19 +40,19 @@ png2pnm$(O): png2pnm$(C)
 	$(CC) -c $(CFLAGS) png2pnm$(C)
 
 png2pnm$(E): png2pnm$(O)
-	$(LD) -o png2pnm$(E) png2pnm$(O) $(LDFLAGS) -lm
+	$(LD) $(LDFLAGS) -o png2pnm$(E) png2pnm$(O) $(LDLIBS) -lm
 
 png2pnm-static$(E): png2pnm$(O)
-	$(LD) -o png2pnm-static$(E) png2pnm$(O) $(LDFLAGSS) -lm
+	$(LD) $(LDFLAGS) -o png2pnm-static$(E) png2pnm$(O) $(LDLIBSS) -lm
 
 pnm2png$(O): pnm2png$(C)
 	$(CC) -c $(CFLAGS) pnm2png$(C)
 
 pnm2png$(E): pnm2png$(O)
-	$(LD) -o pnm2png$(E) pnm2png$(O) $(LDFLAGS) -lm
+	$(LD) $(LDFLAGS) -o pnm2png$(E) pnm2png$(O) $(LDLIBS) -lm
 
 pnm2png-static$(E): pnm2png$(O)
-	$(LD) -o pnm2png-static$(E) pnm2png$(O) $(LDFLAGSS) -lm
+	$(LD) $(LDFLAGS) -o pnm2png-static$(E) pnm2png$(O) $(LDLIBSS) -lm
 
 clean:
 	$(RM) png2pnm$(O)

depcomp

@@ -1,10 +1,9 @@
 #! /bin/sh
 # depcomp - compile a program generating dependencies as side-effects
 
-scriptversion=2009-04-28.21; # UTC
+scriptversion=2013-05-30.07; # UTC
 
-# Copyright (C) 1999, 2000, 2003, 2004, 2005, 2006, 2007, 2009 Free
-# Software Foundation, Inc.
+# Copyright (C) 1999-2013 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
@@ -28,9 +27,9 @@ scriptversion=2009-04-28.21; # UTC
 
 case $1 in
   '')
-     echo "$0: No command.  Try \`$0 --help' for more information." 1>&2
-     exit 1;
-     ;;
+    echo "$0: No command.  Try '$0 --help' for more information." 1>&2
+    exit 1;
+    ;;
   -h | --h*)
     cat <<\EOF
 Usage: depcomp [--help] [--version] PROGRAM [ARGS]
@@ -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 +56,66 @@ EOF
     ;;
 esac
 
+# Get the directory component of the given path, and save it in the
+# global variables '$dir'.  Note that this directory component will
+# be either empty or ending with a '/' character.  This is deliberate.
+set_dir_from ()
+{
+  case $1 in
+    */*) dir=`echo "$1" | sed -e 's|/[^/]*$|/|'`;;
+      *) dir=;;
+  esac
+}
+
+# Get the suffix-stripped basename of the given path, and save it the
+# global variable '$base'.
+set_base_from ()
+{
+  base=`echo "$1" | sed -e 's|^.*/||' -e 's/\.[^.]*$//'`
+}
+
+# If no dependency file was actually created by the compiler invocation,
+# we still have to create a dummy depfile, to avoid errors with the
+# Makefile "include basename.Plo" scheme.
+make_dummy_depfile ()
+{
+  echo "#dummy" > "$depfile"
+}
+
+# Factor out some common post-processing of the generated depfile.
+# Requires the auxiliary global variable '$tmpdepfile' to be set.
+aix_post_process_depfile ()
+{
+  # If the compiler actually managed to produce a dependency file,
+  # post-process it.
+  if test -f "$tmpdepfile"; then
+    # Each line is of the form 'foo.o: dependency.h'.
+    # Do two passes, one to just change these to
+    #   $object: dependency.h
+    # and one to simply output
+    #   dependency.h:
+    # which is needed to avoid the deleted-header problem.
+    { sed -e "s,^.*\.[$lower]*:,$object:," < "$tmpdepfile"
+      sed -e "s,^.*\.[$lower]*:[$tab ]*,," -e 's,$,:,' < "$tmpdepfile"
+    } > "$depfile"
+    rm -f "$tmpdepfile"
+  else
+    make_dummy_depfile
+  fi
+}
+
+# A tabulation character.
+tab='	'
+# A newline character.
+nl='
+'
+# Character ranges might be problematic outside the C locale.
+# These definitions help.
+upper=ABCDEFGHIJKLMNOPQRSTUVWXYZ
+lower=abcdefghijklmnopqrstuvwxyz
+digits=0123456789
+alpha=${upper}${lower}
+
 if test -z "$depmode" || test -z "$source" || test -z "$object"; then
   echo "depcomp: Variables source, object and depmode must be set" 1>&2
   exit 1
@@ -69,6 +128,9 @@ tmpdepfile=${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
@@ -80,18 +142,32 @@ if test "$depmode" = hp; then
 fi
 
 if test "$depmode" = dashXmstdout; then
-   # This is just like dashmstdout with a different argument.
-   dashmflag=-xM
-   depmode=dashmstdout
+  # This is just like dashmstdout with a different argument.
+  dashmflag=-xM
+  depmode=dashmstdout
 fi
 
 cygpath_u="cygpath -u -f -"
 if test "$depmode" = msvcmsys; then
-   # This is just like msvisualcpp but w/o cygpath translation.
-   # Just convert the backslash-escaped backslashes to single forward
-   # slashes to satisfy depend.m4
-   cygpath_u="sed s,\\\\\\\\,/,g"
-   depmode=msvisualcpp
+  # This is just like msvisualcpp but w/o cygpath translation.
+  # Just convert the backslash-escaped backslashes to single forward
+  # slashes to satisfy depend.m4
+  cygpath_u='sed s,\\\\,/,g'
+  depmode=msvisualcpp
+fi
+
+if test "$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 "$depmode" in
@@ -114,8 +190,7 @@ gcc3)
   done
   "$@"
   stat=$?
-  if test $stat -eq 0; then :
-  else
+  if test $stat -ne 0; then
     rm -f "$tmpdepfile"
     exit $stat
   fi
@@ -123,13 +198,17 @@ 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
@@ -137,31 +216,31 @@ gcc)
   fi
   "$@" -Wp,"$gccflag$tmpdepfile"
   stat=$?
-  if test $stat -eq 0; then :
-  else
+  if test $stat -ne 0; then
     rm -f "$tmpdepfile"
     exit $stat
   fi
   rm -f "$depfile"
   echo "$object : \\" > "$depfile"
-  alpha=ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
-## The second -e expression handles DOS-style file names with drive letters.
+  # 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
+## 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"
+  tr ' ' "$nl" < "$tmpdepfile" \
+    | sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \
+    | sed -e 's/$/ :/' >> "$depfile"
   rm -f "$tmpdepfile"
   ;;
 
@@ -179,8 +258,7 @@ sgi)
     "$@" -MDupdate "$tmpdepfile"
   fi
   stat=$?
-  if test $stat -eq 0; then :
-  else
+  if test $stat -ne 0; then
     rm -f "$tmpdepfile"
     exit $stat
   fi
@@ -188,43 +266,41 @@ sgi)
 
   if test -f "$tmpdepfile"; then  # yes, the sourcefile depend on other files
     echo "$object : \\" > "$depfile"
-
     # Clip off the initial element (the dependent).  Don't try to be
     # clever and replace this with sed code, as IRIX sed won't handle
     # lines with more than a fixed number of characters (4096 in
     # IRIX 6.2 sed, 8192 in IRIX 6.5).  We also remove comment lines;
-    # the IRIX cc adds comments like `#:fec' to the end of the
+    # the IRIX cc adds comments like '#:fec' to the end of the
     # dependency line.
-    tr ' ' '
-' < "$tmpdepfile" \
-    | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
-    tr '
-' ' ' >> "$depfile"
+    tr ' ' "$nl" < "$tmpdepfile" \
+      | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' \
+      | tr "$nl" ' ' >> "$depfile"
     echo >> "$depfile"
-
     # The second pass generates a dummy entry for each header file.
-    tr ' ' '
-' < "$tmpdepfile" \
-   | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
-   >> "$depfile"
+    tr ' ' "$nl" < "$tmpdepfile" \
+      | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
+      >> "$depfile"
   else
-    # The sourcefile does not contain any dependencies, so just
-    # store a dummy comment line, to avoid errors with the Makefile
-    # "include basename.Plo" scheme.
-    echo "#dummy" > "$depfile"
+    make_dummy_depfile
   fi
   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|/[^/]*$|/|'`
-  test "x$dir" = "x$object" && dir=
-  base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
+  set_dir_from "$object"
+  set_base_from "$object"
   if test "$libtool" = yes; then
     tmpdepfile1=$dir$base.u
     tmpdepfile2=$base.u
@@ -237,9 +313,7 @@ aix)
     "$@" -M
   fi
   stat=$?
-
-  if test $stat -eq 0; then :
-  else
+  if test $stat -ne 0; then
     rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
     exit $stat
   fi
@@ -248,44 +322,100 @@ aix)
   do
     test -f "$tmpdepfile" && break
   done
-  if test -f "$tmpdepfile"; then
-    # Each line is of the form `foo.o: dependent.h'.
-    # Do two passes, one to just change these to
-    # `$object: dependent.h' and one to simply `dependent.h:'.
-    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"
-  else
-    # The sourcefile does not contain any dependencies, so just
-    # store a dummy comment line, to avoid errors with the Makefile
-    # "include basename.Plo" scheme.
-    echo "#dummy" > "$depfile"
+  aix_post_process_depfile
+  ;;
+
+tcc)
+  # tcc (Tiny C Compiler) understand '-MD -MF file' since version 0.9.26
+  # FIXME: That version still under development at the moment of writing.
+  #        Make that this statement remains true also for stable, released
+  #        versions.
+  # It will wrap lines (doesn't matter whether long or short) with a
+  # trailing '\', as in:
+  #
+  #   foo.o : \
+  #    foo.c \
+  #    foo.h \
+  #
+  # It will put a trailing '\' even on the last line, and will use leading
+  # spaces rather than leading tabs (at least since its commit 0394caf7
+  # "Emit spaces for -MD").
+  "$@" -MD -MF "$tmpdepfile"
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile"
+    exit $stat
   fi
+  rm -f "$depfile"
+  # Each non-empty line is of the form 'foo.o : \' or ' dep.h \'.
+  # We have to change lines of the first kind to '$object: \'.
+  sed -e "s|.*:|$object :|" < "$tmpdepfile" > "$depfile"
+  # And for each line of the second kind, we have to emit a 'dep.h:'
+  # dummy dependency, to avoid the deleted-header problem.
+  sed -n -e 's|^  *\(.*\) *\\$|\1:|p' < "$tmpdepfile" >> "$depfile"
   rm -f "$tmpdepfile"
   ;;
 
-icc)
-  # Intel's C compiler understands `-MD -MF file'.  However on
-  #    icc -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:
-  #    sub/foo.o: sub/foo.c
-  #    sub/foo.o: sub/foo.h
-  #    sub/foo.c:
-  #    sub/foo.h:
-  # ICC 7.1 will output
+## 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 \ :
+  # and will wrap long lines using '\' :
   #    foo.o: sub/foo.c ... \
   #     sub/foo.h ... \
   #     ...
+  set_dir_from "$object"
+  # Use the source, not the object, to determine the base name, since
+  # that's sadly what pgcc will do too.
+  set_base_from "$source"
+  tmpdepfile=$base.d
 
-  "$@" -MD -MF "$tmpdepfile"
-  stat=$?
-  if test $stat -eq 0; then :
-  else
+  # 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 '$0: caught signal, cleaning up...' >&2
+    rmdir '$lockdir'
+    exit 1
+  " 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.
+      rmdir "$lockdir"
+      break
+    else
+      # If the lock is being held by a different process, wait
+      # until the winning process is done or we timeout.
+      while test -d "$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 $stat
   fi
@@ -297,8 +427,8 @@ icc)
   sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
   # Some versions of the HPUX 10.20 sed can't process this invocation
   # correctly.  Breaking it into two sed invocations is a workaround.
-  sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" |
-    sed -e 's/$/ :/' >> "$depfile"
+  sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" \
+    | sed -e 's/$/ :/' >> "$depfile"
   rm -f "$tmpdepfile"
   ;;
 
@@ -309,9 +439,8 @@ hp2)
   # 'foo.d', which lands next to the object file, wherever that
   # happens to be.
   # Much of this is similar to the tru64 case; see comments there.
-  dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
-  test "x$dir" = "x$object" && dir=
-  base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
+  set_dir_from  "$object"
+  set_base_from "$object"
   if test "$libtool" = yes; then
     tmpdepfile1=$dir$base.d
     tmpdepfile2=$dir.libs/$base.d
@@ -322,8 +451,7 @@ hp2)
     "$@" +Maked
   fi
   stat=$?
-  if test $stat -eq 0; then :
-  else
+  if test $stat -ne 0; then
      rm -f "$tmpdepfile1" "$tmpdepfile2"
      exit $stat
   fi
@@ -333,77 +461,107 @@ hp2)
     test -f "$tmpdepfile" && break
   done
   if test -f "$tmpdepfile"; then
-    sed -e "s,^.*\.[a-z]*:,$object:," "$tmpdepfile" > "$depfile"
-    # Add `dependent.h:' lines.
+    sed -e "s,^.*\.[$lower]*:,$object:," "$tmpdepfile" > "$depfile"
+    # Add 'dependent.h:' lines.
     sed -ne '2,${
-	       s/^ *//
-	       s/ \\*$//
-	       s/$/:/
-	       p
-	     }' "$tmpdepfile" >> "$depfile"
+               s/^ *//
+               s/ \\*$//
+               s/$/:/
+               p
+             }' "$tmpdepfile" >> "$depfile"
   else
-    echo "#dummy" > "$depfile"
+    make_dummy_depfile
   fi
   rm -f "$tmpdepfile" "$tmpdepfile2"
   ;;
 
 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'.
-   # 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.
-   # Subdirectories are respected.
-   dir=`echo "$object" | sed -e 's|/[^/]*$|/|'`
-   test "x$dir" = "x$object" && dir=
-   base=`echo "$object" | sed -e 's|^.*/||' -e 's/\.o$//' -e 's/\.lo$//'`
+  # The Tru64 compiler uses -MD to generate dependencies as a side
+  # effect.  'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'.
+  # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
+  # dependencies in 'foo.d' instead, so we check for that too.
+  # Subdirectories are respected.
+  set_dir_from  "$object"
+  set_base_from "$object"
 
-   if test "$libtool" = yes; then
-      # With Tru64 cc, shared objects can also be used to make a
-      # static library.  This mechanism is used in libtool 1.4 series to
-      # handle both shared and static libraries in a single compilation.
-      # With libtool 1.4, dependencies were output in $dir.libs/$base.lo.d.
-      #
-      # With libtool 1.5 this exception was removed, and libtool now
-      # generates 2 separate objects for the 2 libraries.  These two
-      # compilations output dependencies in $dir.libs/$base.o.d and
-      # in $dir$base.o.d.  We have to check for both files, because
-      # one of the two compilations can be disabled.  We should prefer
-      # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
-      # automatically cleaned when .libs/ is deleted, while ignoring
-      # the former would cause a distcleancheck panic.
-      tmpdepfile1=$dir.libs/$base.lo.d   # libtool 1.4
-      tmpdepfile2=$dir$base.o.d          # libtool 1.5
-      tmpdepfile3=$dir.libs/$base.o.d    # libtool 1.5
-      tmpdepfile4=$dir.libs/$base.d      # Compaq CCC V6.2-504
-      "$@" -Wc,-MD
-   else
-      tmpdepfile1=$dir$base.o.d
-      tmpdepfile2=$dir$base.d
-      tmpdepfile3=$dir$base.d
-      tmpdepfile4=$dir$base.d
-      "$@" -MD
-   fi
+  if test "$libtool" = yes; then
+    # Libtool generates 2 separate objects for the 2 libraries.  These
+    # two compilations output dependencies in $dir.libs/$base.o.d and
+    # in $dir$base.o.d.  We have to check for both files, because
+    # one of the two compilations can be disabled.  We should prefer
+    # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
+    # automatically cleaned when .libs/ is deleted, while ignoring
+    # the former would cause a distcleancheck panic.
+    tmpdepfile1=$dir$base.o.d          # libtool 1.5
+    tmpdepfile2=$dir.libs/$base.o.d    # Likewise.
+    tmpdepfile3=$dir.libs/$base.d      # Compaq CCC V6.2-504
+    "$@" -Wc,-MD
+  else
+    tmpdepfile1=$dir$base.d
+    tmpdepfile2=$dir$base.d
+    tmpdepfile3=$dir$base.d
+    "$@" -MD
+  fi
 
-   stat=$?
-   if test $stat -eq 0; then :
-   else
-      rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
-      exit $stat
-   fi
+  stat=$?
+  if test $stat -ne 0; then
+    rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+    exit $stat
+  fi
 
-   for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3" "$tmpdepfile4"
-   do
-     test -f "$tmpdepfile" && break
-   done
-   if test -f "$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"
-   else
-      echo "#dummy" > "$depfile"
-   fi
-   rm -f "$tmpdepfile"
-   ;;
+  for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
+  do
+    test -f "$tmpdepfile" && break
+  done
+  # Same post-processing that is required for AIX mode.
+  aix_post_process_depfile
+  ;;
+
+msvc7)
+  if test "$libtool" = yes; then
+    showIncludes=-Wc,-showIncludes
+  else
+    showIncludes=-showIncludes
+  fi
+  "$@" $showIncludes > "$tmpdepfile"
+  stat=$?
+  grep -v '^Note: including file: ' "$tmpdepfile"
+  if test $stat -ne 0; then
+    rm -f "$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"
+  echo >> "$depfile" # make sure the fragment doesn't end with a backslash
+  rm -f "$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
@@ -422,7 +580,7 @@ dashmstdout)
     shift
   fi
 
-  # Remove `-o $object'.
+  # Remove '-o $object'.
   IFS=" "
   for arg
   do
@@ -442,18 +600,18 @@ 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" | \
-## 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"
+  # Some versions of the HPUX 10.20 sed can't process this sed invocation
+  # correctly.  Breaking it into two sed invocations is a workaround.
+  tr ' ' "$nl" < "$tmpdepfile" \
+    | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
+    | sed -e 's/$/ :/' >> "$depfile"
   rm -f "$tmpdepfile"
   ;;
 
@@ -503,12 +661,15 @@ makedepend)
   touch "$tmpdepfile"
   ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
   rm -f "$depfile"
-  cat < "$tmpdepfile" > "$depfile"
-  sed '1,2d' "$tmpdepfile" | tr ' ' '
-' | \
-## 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"
+  # 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"
+  # Some versions of the HPUX 10.20 sed can't process the last invocation
+  # correctly.  Breaking it into two sed invocations is a workaround.
+  sed '1,2d' "$tmpdepfile" \
+    | tr ' ' "$nl" \
+    | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
+    | sed -e 's/$/ :/' >> "$depfile"
   rm -f "$tmpdepfile" "$tmpdepfile".bak
   ;;
 
@@ -525,7 +686,7 @@ cpp)
     shift
   fi
 
-  # Remove `-o $object'.
+  # Remove '-o $object'.
   IFS=" "
   for arg
   do
@@ -544,10 +705,10 @@ cpp)
     esac
   done
 
-  "$@" -E |
-    sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
-       -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' |
-    sed '$ s: \\$::' > "$tmpdepfile"
+  "$@" -E \
+    | sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
+             -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
+    | sed '$ s: \\$::' > "$tmpdepfile"
   rm -f "$depfile"
   echo "$object : \\" > "$depfile"
   cat < "$tmpdepfile" >> "$depfile"
@@ -579,23 +740,23 @@ msvisualcpp)
       shift
       ;;
     "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
-	set fnord "$@"
-	shift
-	shift
-	;;
+        set fnord "$@"
+        shift
+        shift
+        ;;
     *)
-	set fnord "$@" "$arg"
-	shift
-	shift
-	;;
+        set fnord "$@" "$arg"
+        shift
+        shift
+        ;;
     esac
   done
   "$@" -E 2>/dev/null |
   sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
   rm -f "$depfile"
   echo "$object : \\" > "$depfile"
-  sed < "$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

@@ -4,7 +4,7 @@
 /* example.c - an example of using libpng
  * Last changed in libpng 1.2.37 [June 4, 2009]
  * This file has been placed in the public domain by the authors.
- * Maintained 1998-2009 Glenn Randers-Pehrson
+ * Maintained 1998-2010 Glenn Randers-Pehrson
  * Maintained 1996, 1997 Andreas Dilger)
  * Written 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  */
@@ -509,20 +509,17 @@ row_callback(png_structp png_ptr, png_bytep new_row,
     * shown below:
     */
 
-   /* Check if row_num is in bounds. */
-   if ((row_num >= 0) && (row_num < height))
-   {
-     /* Get pointer to corresponding row in our
-      * PNG read buffer.
-      */
-     png_bytep old_row = ((png_bytep *)our_data)[row_num];
+   /* Get pointer to corresponding row in our
+    * PNG read buffer.
+    */
+   png_bytep old_row = ((png_bytep *)our_data)[row_num];
+
+   /* If both rows are allocated then copy the new row
+    * data to the corresponding row data.
+    */
+   if ((old_row != NULL) && (new_row != NULL))
+   png_progressive_combine_row(png_ptr, old_row, new_row);
 
-     /* If both rows are allocated then copy the new row
-      * data to the corresponding row data.
-      */
-     if ((old_row != NULL) && (new_row != NULL))
-     png_progressive_combine_row(png_ptr, old_row, new_row);
-   }
    /*
     * The rows and passes are called in order, so you don't really
     * need the row_num and pass, but I'm supplying them because it

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-1.2.51.txt

@@ -1,9 +1,9 @@
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.0.52rc01 - December 23, 2009
+ libpng version 1.2.51 - February 6, 2014
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
- Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ Copyright (c) 1998-2014 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.txt - A description on how to use and modify libpng
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.0.52rc01 - December 23, 2009
+ libpng versions 0.97, January 1998, through 1.2.51 - February 6, 2014
  Updated and distributed by Glenn Randers-Pehrson
- Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ Copyright (c) 1998-2014 Glenn Randers-Pehrson
 
  libpng 1.0 beta 6  version 0.96 May 28, 1997
  Updated and distributed by Andreas Dilger
@@ -845,7 +845,7 @@ unless the library has been told to transform it into another format.
 For example, 4 bit/pixel paletted or grayscale data will be returned
 2 pixels/byte with the leftmost pixel in the high-order bits of the
 byte, unless png_set_packing() is called.  8-bit RGB data will be stored
-in RGB RGB RGB format unless png_set_filler()
+in RGB RGB RGB format unless png_set_filler() or png_set_add_alpha()
 is called to insert filler bytes, either before or after each RGB triplet.
 16-bit RGB data will be returned RRGGBB RRGGBB, with the most significant
 byte of the color value first, unless png_set_strip_16() is called to
@@ -853,7 +853,7 @@ transform it to regular RGB RGB triplets, or png_set_filler() or
 png_set_add alpha() is called to insert filler bytes, either before or
 after each RRGGBB triplet.  Similarly, 8-bit or 16-bit grayscale data can
 be modified with
-png_set_filler() or png_set_strip_16().
+png_set_filler(), png_set_add_alpha(), or png_set_strip_16().
 
 The following code transforms grayscale images of less than 8 to 8 bits,
 changes paletted images to RGB, and adds a full alpha channel if there is
@@ -865,7 +865,7 @@ viewing application that wishes to treat all images in the same way.
         png_set_palette_to_rgb(png_ptr);
 
     if (color_type == PNG_COLOR_TYPE_GRAY &&
-        bit_depth < 8) png_set_gray_1_2_4_to_8(png_ptr);
+        bit_depth < 8) png_set_expand_gray_1_2_4_to_8(png_ptr);
 
     if (png_get_valid(png_ptr, info_ptr,
         PNG_INFO_tRNS)) png_set_tRNS_to_alpha(png_ptr);
@@ -878,7 +878,7 @@ things.
 As of libpng version 1.2.9, png_set_expand_gray_1_2_4_to_8() was
 added.  It expands the sample depth without changing tRNS to alpha.
 
-As of libpng version 1.0.52rc01, not all possible expansions are supported.
+As of libpng version 1.2.51, not all possible expansions are supported.
 
 In the following table, the 01 means grayscale with depth<8, 31 means
 indexed with depth<8, other numerals represent the color type, "T" means
@@ -987,7 +987,16 @@ does not affect images that already have full alpha channels.  To add an
 opaque alpha channel, use filler=0xff or 0xffff and PNG_FILLER_AFTER which
 will generate RGBA pixels.
 
+Note that png_set_filler() does not change the color type.  If you want
+to do that, you can add a true alpha channel with
+
+    if (color_type == PNG_COLOR_TYPE_RGB ||
            color_type == PNG_COLOR_TYPE_GRAY)
+    png_set_add_alpha(png_ptr, filler, PNG_FILLER_AFTER);
+
+where "filler" contains the alpha value to assign to each pixel.
+This function was added in libpng-1.2.7.
+
 If you are reading an image with an alpha channel, and you need the
 data as ARGB instead of the normal PNG format RGBA:
 
@@ -2840,7 +2849,7 @@ the message, "message" is the formatted string to be printed,
 and p1 and p2 are parameters that are to be embedded in the string
 according to printf-style formatting directives.  For example,
 
-   png_debug1(2, "foo=%d\n", foo);
+   png_debug1(2, "foo=%d", foo);
 
 is expanded to
 
@@ -2918,6 +2927,9 @@ png_set_error_fn(), which is essentially the same function, but with a new
 name to force compilation errors with applications that try to use the old
 method.
 
+Support for the sCAL, iCCP, iTXt, and sPLT chunks was added at libpng-1.0.6;
+however, iTXt support was not enabled by default.
+
 Starting with version 1.0.7, you can find out which version of the library
 you are using at run-time:
 
@@ -2932,8 +2944,106 @@ application:
 
    png_uint_32 application_vn = PNG_LIBPNG_VER;
 
-VIII.  (Omitted).
+VIII.  Changes to Libpng from version 1.0.x to 1.2.x
+
+Support for user memory management was enabled by default.  To
+accomplish this, the functions png_create_read_struct_2(),
+png_create_write_struct_2(), png_set_mem_fn(), png_get_mem_ptr(),
+png_malloc_default(), and png_free_default() were added.
+
+Support for the iTXt chunk has been enabled by default as of
+version 1.2.41.
+
+Support for certain MNG features was enabled.
+
+Support for numbered error messages was added.  However, we never got
+around to actually numbering the error messages.  The function
+png_set_strip_error_numbers() was added (Note: the prototype for this
+function was inadvertently removed from png.h in PNG_NO_ASSEMBLER_CODE
+builds of libpng-1.2.15.  It was restored in libpng-1.2.36).
+
+The png_malloc_warn() function was added at libpng-1.2.3.  This issues
+a png_warning and returns NULL instead of aborting when it fails to
+acquire the requested memory allocation.
+
+Support for setting user limits on image width and height was enabled
+by default.  The functions png_set_user_limits(), png_get_user_width_max(),
+and png_get_user_height_max() were added at libpng-1.2.6.
+
+The png_set_add_alpha() function was added at libpng-1.2.7.
+
+The function png_set_expand_gray_1_2_4_to_8() was added at libpng-1.2.9.
+Unlike png_set_gray_1_2_4_to_8(), the new function does not expand the
+tRNS chunk to alpha. The png_set_gray_1_2_4_to_8() function is
+deprecated.
+
+A number of macro definitions in support of runtime selection of
+assembler code features (especially Intel MMX code support) were
+added at libpng-1.2.0:
+
+    PNG_ASM_FLAG_MMX_SUPPORT_COMPILED
+    PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU
+    PNG_ASM_FLAG_MMX_READ_COMBINE_ROW
+    PNG_ASM_FLAG_MMX_READ_INTERLACE
+    PNG_ASM_FLAG_MMX_READ_FILTER_SUB
+    PNG_ASM_FLAG_MMX_READ_FILTER_UP
+    PNG_ASM_FLAG_MMX_READ_FILTER_AVG
+    PNG_ASM_FLAG_MMX_READ_FILTER_PAETH
+    PNG_ASM_FLAGS_INITIALIZED
+    PNG_MMX_READ_FLAGS
+    PNG_MMX_FLAGS
+    PNG_MMX_WRITE_FLAGS
+    PNG_MMX_FLAGS
+
+We added the following functions in support of runtime
+selection of assembler code features:
+
+    png_get_mmx_flagmask()
+    png_set_mmx_thresholds()
+    png_get_asm_flags()
+    png_get_mmx_bitdepth_threshold()
+    png_get_mmx_rowbytes_threshold()
+    png_set_asm_flags()
+
+We replaced all of these functions with simple stubs in libpng-1.2.20,
+when the Intel assembler code was removed due to a licensing issue.
+
+These macros are deprecated:
+
+    PNG_READ_TRANSFORMS_NOT_SUPPORTED
+    PNG_PROGRESSIVE_READ_NOT_SUPPORTED
+    PNG_NO_SEQUENTIAL_READ_SUPPORTED
+    PNG_WRITE_TRANSFORMS_NOT_SUPPORTED
+    PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED
+    PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED
+
+They have been replaced, respectively, by:
+
+    PNG_NO_READ_TRANSFORMS
+    PNG_NO_PROGRESSIVE_READ
+    PNG_NO_SEQUENTIAL_READ
+    PNG_NO_WRITE_TRANSFORMS
+    PNG_NO_READ_ANCILLARY_CHUNKS
+    PNG_NO_WRITE_ANCILLARY_CHUNKS
+
+PNG_MAX_UINT was replaced with PNG_UINT_31_MAX.  It has been
+deprecated since libpng-1.0.16 and libpng-1.2.6.
+
+The function
+    png_check_sig(sig, num)
+was replaced with
+    !png_sig_cmp(sig, 0, num)
+It has been deprecated since libpng-0.90.
+
+The function
+    png_set_gray_1_2_4_to_8()
+which also expands tRNS to alpha was replaced with
+    png_set_expand_gray_1_2_4_to_8()
+which does not. It has been deprecated since libpng-1.0.18 and 1.2.9.
+
 IX.  (Omitted)
+
+
 X. Detecting libpng
 
 The png_get_io_ptr() function has been present since libpng-0.88, has never
@@ -2950,11 +3060,11 @@ control.  The git repository was built from old libpng-x.y.z.tar.gz files
 going back to version 0.70.  You can access the git repository (read only)
 at
 
-    git://libpng.git.sourceforge.net/gitroot/libpng
+    git://git.code.sf.net/p/libpng/code
 
-or you can browse it via "gitweb" at
+or you can browse it with a web browser by selecting the "code" button at
 
-    http://libpng.git.sourceforge.net/git/gitweb.cgi?p=libpng
+    https://sourceforge.net/projects/libpng/
 
 Patches can be sent to glennrp at users.sourceforge.net or to
 png-mng-implement at lists.sourceforge.net or you can upload them to
@@ -3048,8 +3158,8 @@ above the comment that says
   /* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */
 
 The names of all exported functions and variables begin
-with  "png_", and all publicly visible C preprocessor
-macros begin with "PNG_".
+with "png_", and all publicly visible C preprocessor
+macros begin with "PNG".
 
 We put a space after each comma and after each semicolon
 in "for" statments, and we put spaces before and after each
@@ -3072,13 +3182,13 @@ Other rules can be inferred by inspecting the libpng source.
 
 XIII. Y2K Compliance in libpng
 
-December 23, 2009
+February 6, 2014
 
 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 1.0.52rc01 are Y2K compliant.  It is my belief that earlier
+upward through 1.2.51 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

libpngpf.3

@@ -1,798 +1,274 @@
-.TH LIBPNGPF 3 "December 23, 2009"
+.TH LIBPNGPF 3 "February 6, 2014"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.0.52rc01
+libpng \- Portable Network Graphics (PNG) Reference Library 1.2.51
 (private functions)
 .SH SYNOPSIS
 \fB#include <png.h>\fP
 
-\fI\fB
-
-\fBvoid png_64bit_product (long \fP\fIv1\fP\fB, long \fP\fIv2\fP\fB, unsigned long \fI*hi_product,
-
-\fBunsigned long \fI*lo_product\fP\fB);\fP
-
-\fI\fB
+\fBvoid png_64bit_product (long \fP\fIv1\fP\fB, long \fP\fIv2\fP\fB, unsigned long \fP\fI*hi_product\fP\fB, unsigned long \fI*lo_product\fP\fB);\fP
 
 \fBvoid png_build_gamma_table (png_structp \fIpng_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_build_grayscale_palette (int \fP\fIbit_depth\fP\fB, png_colorp \fIpalette\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_calculate_crc (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIptr\fP\fB, png_size_t \fIlength\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBint png_check_cHRM_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_fixed_point \fP\fIint_white_x\fP\fB, png_fixed_point \fP\fIint_white_y\fP\fB, png_fixed_point \fP\fIint_red_x\fP\fB, png_fixed_point \fP\fIint_red_y\fP\fB, png_fixed_point \fP\fIint_green_x\fP\fB, png_fixed_point \fP\fIint_green_y\fP\fB, png_fixed_point \fP\fIint_blue_x\fP\fB, png_fixed_point \fIint_blue_y\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_check_IHDR (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIwidth\fP\fB, png_uint_32 \fP\fIheight\fP\fB, int \fP\fIbit_depth\fP\fB, int \fP\fIcolor_type\fP\fB, int \fP\fIinterlace_type\fP\fB, int \fP\fIcompression_type\fP\fB, int \fIfilter_type\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_check_chunk_name (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIchunk_name\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBpng_size_t png_check_keyword (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIkey\fP\fB, png_charpp \fInew_key\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_combine_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIrow\fP\fB, int \fImask\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_correct_palette (png_structp \fP\fIpng_ptr\fP\fB, png_colorp \fP\fIpalette\fP\fB, int \fInum_palette\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBint png_crc_error (png_structp \fIpng_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBint png_crc_finish (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIskip\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_crc_read (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIbuf\fP\fB, png_size_t \fIlength\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBpng_voidp png_create_struct (int \fItype\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBpng_voidp png_create_struct_2 (int \fP\fItype\fP\fB, png_malloc_ptr \fP\fImalloc_fn\fP\fB, png_voidp \fImem_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_decompress_chunk (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIcomp_type\fP\fB, png_charp \fP\fIchunkdata\fP\fB, png_size_t \fP\fIchunklength\fP\fB, png_size_t \fP\fIprefix_length\fP\fB, png_size_t \fI*data_length\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_destroy_struct (png_voidp \fIstruct_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_destroy_struct_2 (png_voidp \fP\fIstruct_ptr\fP\fB, png_free_ptr \fP\fIfree_fn\fP\fB, png_voidp \fImem_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_background (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_color_16p \fP\fItrans_values\fP\fB, png_color_16p \fP\fIbackground\fP\fB, png_color_16p \fP\fIbackground_1\fP\fB, png_bytep \fP\fIgamma_table\fP\fB, png_bytep \fP\fIgamma_from_1\fP\fB, png_bytep \fP\fIgamma_to_1\fP\fB, png_uint_16pp \fP\fIgamma_16\fP\fB, png_uint_16pp \fP\fIgamma_16_from_1\fP\fB, png_uint_16pp \fP\fIgamma_16_to_1\fP\fB, int \fIgamma_shift\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_bgr (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_chop (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_dither (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_bytep \fP\fIpalette_lookup\fP\fB, png_bytep \fIdither_lookup\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_expand (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_color_16p \fItrans_value\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_expand_palette (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_colorp \fP\fIpalette\fP\fB, png_bytep \fP\fItrans\fP\fB, int \fInum_trans\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_gamma (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_bytep \fP\fIgamma_table\fP\fB, png_uint_16pp \fP\fIgamma_16_table\fP\fB, int \fIgamma_shift\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_gray_to_rgb (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_invert (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_pack (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_uint_32 \fIbit_depth\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_packswap (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_read_filler (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_uint_32 \fP\fIfiller\fP\fB, png_uint_32 \fIflags\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_read_interlace (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, int \fP\fIpass\fP\fB, png_uint_32 \fItransformations\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_read_invert_alpha (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_read_swap_alpha (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_read_transformations (png_structp \fIpng_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBint png_do_rgb_to_gray (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_shift (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_color_8p \fIbit_depth\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_strip_filler (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_uint_32 \fIflags\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_swap (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_unpack (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_unshift (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_color_8p \fIsig_bits\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_write_interlace (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, int \fIpass\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_write_invert_alpha (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_write_swap_alpha (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_write_transformations (png_structp \fIpng_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid *png_far_to_near (png_structp png_ptr,png_voidp \fP\fIptr\fP\fB, int \fIcheck\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_flush (png_structp \fIpng_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_bKGD (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_cHRM (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_gAMA (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_hIST (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_IEND (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_IHDR (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_iCCP (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_iTXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_oFFs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_pCAL (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_pHYs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_PLTE (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_sBIT (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_sCAL (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_sPLT (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_sRGB (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_tEXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_tIME (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_tRNS (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_unknown (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_handle_zTXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_info_destroy (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_init_mmx_flags (png_structp \fIpng_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_init_read_transformations (png_structp \fIpng_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_process_IDAT_data (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIbuffer\fP\fB, png_size_t \fIbuffer_length\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_process_some_data (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_push_check_crc (png_structp \fIpng_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_push_crc_finish (png_structp \fIpng_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_push_crc_skip (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_push_fill_buffer (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIbuffer\fP\fB, png_size_t \fIlength\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_push_handle_tEXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_push_handle_unknown (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_push_handle_zTXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_push_have_end (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_push_have_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_push_have_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIrow\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_push_process_row (png_structp \fIpng_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_push_read_chunk (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_push_read_end (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_push_read_IDAT (png_structp \fIpng_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_push_read_sig (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_push_read_tEXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_push_read_zTXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_push_restore_buffer (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIbuffer\fP\fB, png_size_t \fIbuffer_length\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_push_save_buffer (png_structp \fIpng_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBpng_uint_32 png_read_chunk_header (png_structp \fIpng_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_read_data (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIdata\fP\fB, png_size_t \fIlength\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_read_filter_row (png_structp \fP\fIpng_ptr\fP\fB, png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_bytep \fP\fIprev_row\fP\fB, int \fIfilter\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_read_finish_row (png_structp \fIpng_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_read_push_finish_row (png_structp \fIpng_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_read_start_row (png_structp \fIpng_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_read_transform_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_reset_crc (png_structp \fIpng_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBint png_set_text_2 (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_textp \fP\fItext_ptr\fP\fB, int \fInum_text\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_cHRM (png_structp \fP\fIpng_ptr\fP\fB, double \fP\fIwhite_x\fP\fB, double \fP\fIwhite_y\fP\fB, double \fP\fIred_x\fP\fB, double \fP\fIred_y\fP\fB, double \fP\fIgreen_x\fP\fB, double \fP\fIgreen_y\fP\fB, double \fP\fIblue_x\fP\fB, double \fIblue_y\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_cHRM_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIwhite_x\fP\fB, png_uint_32 \fP\fIwhite_y\fP\fB, png_uint_32 \fP\fIred_x\fP\fB, png_uint_32 \fP\fIred_y\fP\fB, png_uint_32 \fP\fIgreen_x\fP\fB, png_uint_32 \fP\fIgreen_y\fP\fB, png_uint_32 \fP\fIblue_x\fP\fB, png_uint_32 \fIblue_y\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_data (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIdata\fP\fB, png_size_t \fIlength\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_filtered_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIfiltered_row\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_find_filter (png_structp \fP\fIpng_ptr\fP\fB, png_row_infop \fIrow_info\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_finish_row (png_structp \fIpng_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_gAMA (png_structp \fP\fIpng_ptr\fP\fB, double \fIfile_gamma\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_gAMA_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIint_file_gamma\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_hIST (png_structp \fP\fIpng_ptr\fP\fB, png_uint_16p \fP\fIhist\fP\fB, int \fInum_hist\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_iCCP (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIname\fP\fB, int \fP\fIcompression_type\fP\fB, png_charp \fP\fIprofile\fP\fB, int \fIproflen\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_IDAT (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIdata\fP\fB, png_size_t \fIlength\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_IEND (png_structp \fIpng_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_IHDR (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIwidth\fP\fB, png_uint_32 \fP\fIheight\fP\fB, int \fP\fIbit_depth\fP\fB, int \fP\fIcolor_type\fP\fB, int \fP\fIcompression_type\fP\fB, int \fP\fIfilter_type\fP\fB, int \fIinterlace_type\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_iTXt (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIcompression\fP\fB, png_charp \fP\fIkey\fP\fB, png_charp \fP\fIlang\fP\fB, png_charp \fP\fItranslated_key\fP\fB, png_charp \fItext\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_oFFs (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIx_offset\fP\fB, png_uint_32 \fP\fIy_offset\fP\fB, int \fIunit_type\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_pCAL (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIpurpose\fP\fB, png_int_32 \fP\fIX0\fP\fB, png_int_32 \fP\fIX1\fP\fB, int \fP\fItype\fP\fB, int \fP\fInparams\fP\fB, png_charp \fP\fIunits\fP\fB, png_charpp \fIparams\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_pHYs (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIx_pixels_per_unit\fP\fB, png_uint_32 \fP\fIy_pixels_per_unit\fP\fB, int \fIunit_type\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_PLTE (png_structp \fP\fIpng_ptr\fP\fB, png_colorp \fP\fIpalette\fP\fB, png_uint_32 \fInum_pal\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_sBIT (png_structp \fP\fIpng_ptr\fP\fB, png_color_8p \fP\fIsbit\fP\fB, int \fIcolor_type\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_sCAL (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIunit\fP\fB, double \fP\fIwidth\fP\fB, double \fIheight\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_sCAL_s (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIunit\fP\fB, png_charp \fP\fIwidth\fP\fB, png_charp \fIheight\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_sig (png_structp \fIpng_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_sRGB (png_structp \fP\fIpng_ptr\fP\fB, int \fIintent\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_sPLT (png_structp \fP\fIpng_ptr\fP\fB, png_spalette_p \fIpalette\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_start_row (png_structp \fIpng_ptr\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_tEXt (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIkey\fP\fB, png_charp \fP\fItext\fP\fB, png_size_t \fItext_len\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_tIME (png_structp \fP\fIpng_ptr\fP\fB, png_timep \fImod_time\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_tRNS (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fItrans\fP\fB, png_color_16p \fP\fIvalues\fP\fB, int \fP\fInumber\fP\fB, int \fIcolor_type\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_write_zTXt (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIkey\fP\fB, png_charp \fP\fItext\fP\fB, png_size_t \fP\fItext_len\fP\fB, int \fIcompression\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoidpf png_zalloc (voidpf \fP\fIpng_ptr\fP\fB, uInt \fP\fIitems\fP\fB, uInt \fIsize\fP\fB);\fP
 
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_zfree (voidpf \fP\fIpng_ptr\fP\fB, voidpf \fIptr\fP\fB);\fP
 
 \fI\fB
 
-\fI\fB
-
 .SH DESCRIPTION
 The functions listed above are used privately by libpng
 and are not recommended for use by applications.  They are

missing

@@ -1,11 +1,10 @@
 #! /bin/sh
-# Common stub for a few missing GNU programs while installing.
+# Common wrapper for a few potentially missing GNU programs.
 
-scriptversion=2009-04-28.21; # UTC
+scriptversion=2013-10-28.13; # UTC
 
-# Copyright (C) 1996, 1997, 1999, 2000, 2002, 2003, 2004, 2005, 2006,
-# 2008, 2009 Free Software Foundation, Inc.
-# Originally by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
+# Copyright (C) 1996-2013 Free Software Foundation, Inc.
+# Originally written by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
 
 # 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
@@ -26,69 +25,40 @@ 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
 
-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
-# srcdir already.
-if test -f configure.ac; then
-  configure_ac=configure.ac
-else
-  configure_ac=configure.in
-fi
-
-msg="missing on your system"
-
 case $1 in
---run)
-  # Try to run requested program, and just exit if it succeeds.
-  run=
-  shift
-  "$@" && exit 0
-  # Exit code 63 means version mismatch.  This often happens
-  # when the user try to use an ancient version of a tool on
-  # a file that requires a minimum version.  In this case we
-  # we should proceed has if the program had been absent, or
-  # if --run hadn't been passed.
-  if test $? = 63; then
-    run=:
-    msg="probably too old"
-  fi
-  ;;
+
+  --is-lightweight)
+    # Used by our autoconf macros to check whether the available missing
+    # script is modern enough.
+    exit 0
+    ;;
+
+  --run)
+    # Back-compat with the calling convention used by older automake.
+    shift
+    ;;
 
   -h|--h|--he|--hel|--help)
     echo "\
 $0 [OPTION]... PROGRAM [ARGUMENT]...
 
-Handle \`PROGRAM [ARGUMENT]...' for when PROGRAM is missing, or return an
-error status if there is no known handling for PROGRAM.
+Run 'PROGRAM [ARGUMENT]...', returning a proper advice when this fails due
+to PROGRAM being missing or too old.
 
 Options:
   -h, --help      display this help and exit
   -v, --version   output version information and exit
-  --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'
-  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
-  help2man     touch the output file
-  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]
+  aclocal   autoconf  autoheader   autom4te  automake  makeinfo
+  bison     yacc      flex         lex       help2man
 
-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 $?
@@ -100,272 +70,141 @@ 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
     ;;
 
 esac
 
-# normalize program name to check for.
-program=`echo "$1" | sed '
-  s/^gnu-//; t
-  s/^gnu//; t
-  s/^g//; t'`
+# Run the given program, remember its exit status.
+"$@"; st=$?
 
-# Now exit if we have it, but it failed.  Also exit now if we
-# don't have it and --version was passed (most likely to detect
-# the program).  This is about non-GNU programs, so use $1 not
-# $program.
-case $1 in
-  lex*|yacc*)
-    # Not GNU programs, they don't have --version.
+# If it succeeded, we are done.
+test $st -eq 0 && exit 0
+
+# Also exit now if we it failed (or wasn't found), and '--version' was
+# passed; such an option is passed most likely to detect whether the
+# program is present and works.
+case $2 in --version|--help) exit $st;; esac
+
+# Exit code 63 means version mismatch.  This often happens when the user
+# tries to use an ancient version of a tool on a file that requires a
+# minimum version.
+if test $st -eq 63; then
+  msg="probably too old"
+elif test $st -eq 127; then
+  # Program was missing.
+  msg="missing on your system"
+else
+  # Program was found and executed, but failed.  Give up.
+  exit $st
+fi
+
+perl_URL=http://www.perl.org/
+flex_URL=http://flex.sourceforge.net/
+gnu_software_URL=http://www.gnu.org/software
+
+program_details ()
+{
+  case $1 in
+    aclocal|automake)
+      echo "The '$1' program is part of the GNU Automake package:"
+      echo "<$gnu_software_URL/automake>"
+      echo "It also requires GNU Autoconf, GNU m4 and Perl in order to run:"
+      echo "<$gnu_software_URL/autoconf>"
+      echo "<$gnu_software_URL/m4/>"
+      echo "<$perl_URL>"
+      ;;
+    autoconf|autom4te|autoheader)
+      echo "The '$1' program is part of the GNU Autoconf package:"
+      echo "<$gnu_software_URL/autoconf/>"
+      echo "It also requires GNU m4 and Perl in order to run:"
+      echo "<$gnu_software_URL/m4/>"
+      echo "<$perl_URL>"
+      ;;
+  esac
+}
+
+give_advice ()
+{
+  # Normalize program name to check for.
+  normalized_program=`echo "$1" | sed '
+    s/^gnu-//; t
+    s/^gnu//; t
+    s/^g//; t'`
+
+  printf '%s\n' "'$1' is $msg."
+
+  configure_deps="'configure.ac' or m4 files included by 'configure.ac'"
+  case $normalized_program in
+    autoconf*)
+      echo "You should only need it if you modified 'configure.ac',"
+      echo "or m4 files included by it."
+      program_details 'autoconf'
+      ;;
+    autoheader*)
+      echo "You should only need it if you modified 'acconfig.h' or"
+      echo "$configure_deps."
+      program_details 'autoheader'
+      ;;
+    automake*)
+      echo "You should only need it if you modified 'Makefile.am' or"
+      echo "$configure_deps."
+      program_details 'automake'
+      ;;
+    aclocal*)
+      echo "You should only need it if you modified 'acinclude.m4' or"
+      echo "$configure_deps."
+      program_details 'aclocal'
+      ;;
+   autom4te*)
+      echo "You might have modified some maintainer files that require"
+      echo "the 'autom4te' program to be rebuilt."
+      program_details 'autom4te'
+      ;;
+    bison*|yacc*)
+      echo "You should only need it if you modified a '.y' file."
+      echo "You may want to install the GNU Bison package:"
+      echo "<$gnu_software_URL/bison/>"
+      ;;
+    lex*|flex*)
+      echo "You should only need it if you modified a '.l' file."
+      echo "You may want to install the Fast Lexical Analyzer package:"
+      echo "<$flex_URL>"
+      ;;
+    help2man*)
+      echo "You should only need it if you modified a dependency" \
+           "of a man page."
+      echo "You may want to install the GNU Help2man package:"
+      echo "<$gnu_software_URL/help2man/>"
     ;;
+    makeinfo*)
+      echo "You should only need it if you modified a '.texi' file, or"
+      echo "any other file indirectly affecting the aspect of the manual."
+      echo "You might want to install the Texinfo package:"
+      echo "<$gnu_software_URL/texinfo/>"
+      echo "The spurious makeinfo call might also be the consequence of"
+      echo "using a buggy 'make' (AIX, DU, IRIX), in which case you might"
+      echo "want to install GNU make:"
+      echo "<$gnu_software_URL/make/>"
+      ;;
+    *)
+      echo "You might have modified some files without having the proper"
+      echo "tools for further handling them.  Check the 'README' file, it"
+      echo "often tells you about the needed prerequisites for installing"
+      echo "this package.  You may also peek at any GNU archive site, in"
+      echo "case some other package contains this missing '$1' program."
+      ;;
+  esac
+}
 
-  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
-    ;;
+give_advice "$1" | sed -e '1s/^/WARNING: /' \
+                       -e '2,$s/^/         /' >&2
 
-  *)
-    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
-       # $TOOL exists and not knowing $TOOL uses missing.
-       exit 1
-    fi
-    ;;
-esac
-
-# If it does not exist, or fails to run (possibly an outdated version),
-# try to emulate it.
-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
-         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
-         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
-         from any GNU archive site."
-    files=`sed -n 's/^[ ]*A[CM]_CONFIG_HEADER(\([^)]*\)).*/\1/p' ${configure_ac}`
-    test -z "$files" && files="config.h"
-    touch_files=
-    for f in $files; do
-      case $f in
-      *:*) touch_files="$touch_files "`echo "$f" |
-				       sed -e 's/^[^:]*://' -e 's/:.*//'`;;
-      *) touch_files="$touch_files $f.in";;
-      esac
-    done
-    touch $touch_files
-    ;;
-
-  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.
-         Grab them from any GNU archive site."
-    find . -type f -name Makefile.am -print |
-	   sed 's/\.am$/.in/' |
-	   while read f; do touch "$f"; done
-    ;;
-
-  autom4te*)
-    echo 1>&2 "\
-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 \`$1' as part of \`Autoconf' from any GNU
-         archive site."
-
-    file=`echo "$*" | sed -n "$sed_output"`
-    test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
-    if test -f "$file"; then
-	touch $file
-    else
-	test -z "$file" || exec >$file
-	echo "#! /bin/sh"
-	echo "# Created by GNU Automake missing as a replacement of"
-	echo "#  $ $@"
-	echo "exit 0"
-	chmod +x $file
-	exit 1
-    fi
-    ;;
-
-  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
-         in order for those modifications to take effect.  You can get
-         \`Bison' from any GNU archive site."
-    rm -f y.tab.c y.tab.h
-    if test $# -ne 1; then
-        eval LASTARG="\${$#}"
-	case $LASTARG in
-	*.y)
-	    SRCFILE=`echo "$LASTARG" | sed 's/y$/c/'`
-	    if test -f "$SRCFILE"; then
-	         cp "$SRCFILE" y.tab.c
-	    fi
-	    SRCFILE=`echo "$LASTARG" | sed 's/y$/h/'`
-	    if test -f "$SRCFILE"; then
-	         cp "$SRCFILE" y.tab.h
-	    fi
-	  ;;
-	esac
-    fi
-    if test ! -f y.tab.h; then
-	echo >y.tab.h
-    fi
-    if test ! -f y.tab.c; then
-	echo 'main() { return 0; }' >y.tab.c
-    fi
-    ;;
-
-  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
-         in order for those modifications to take effect.  You can get
-         \`Flex' from any GNU archive site."
-    rm -f lex.yy.c
-    if test $# -ne 1; then
-        eval LASTARG="\${$#}"
-	case $LASTARG in
-	*.l)
-	    SRCFILE=`echo "$LASTARG" | sed 's/l$/c/'`
-	    if test -f "$SRCFILE"; then
-	         cp "$SRCFILE" lex.yy.c
-	    fi
-	  ;;
-	esac
-    fi
-    if test ! -f lex.yy.c; then
-	echo 'main() { return 0; }' >lex.yy.c
-    fi
-    ;;
-
-  help2man*)
-    echo 1>&2 "\
-WARNING: \`$1' is $msg.  You should only need it if
-	 you modified a dependency of a manual page.  You may need the
-	 \`Help2man' package in order for those modifications to take
-	 effect.  You can get \`Help2man' from any GNU archive site."
-
-    file=`echo "$*" | sed -n "$sed_output"`
-    test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
-    if test -f "$file"; then
-	touch $file
-    else
-	test -z "$file" || exec >$file
-	echo ".ab help2man is required to generate this page"
-	exit $?
-    fi
-    ;;
-
-  makeinfo*)
-    echo 1>&2 "\
-WARNING: \`$1' is $msg.  You should only need it if
-         you modified a \`.texi' or \`.texinfo' file, or any other file
-         indirectly affecting the aspect of the manual.  The spurious
-         call might also be the consequence of using a buggy \`make' (AIX,
-         DU, IRIX).  You might want to install the \`Texinfo' package or
-         the \`GNU make' package.  Grab either from any GNU archive site."
-    # The file to touch is that specified with -o ...
-    file=`echo "$*" | sed -n "$sed_output"`
-    test -z "$file" && file=`echo "$*" | sed -n "$sed_minuso"`
-    if test -z "$file"; then
-      # ... or it is the one specified with @setfilename ...
-      infile=`echo "$*" | sed 's/.* \([^ ]*\) *$/\1/'`
-      file=`sed -n '
-	/^@setfilename/{
-	  s/.* \([^ ]*\) *$/\1/
-	  p
-	  q
-	}' $infile`
-      # ... or it is derived from the source name (dir/f.texi becomes f.info)
-      test -z "$file" && file=`echo "$infile" | sed 's,.*/,,;s,.[^.]*$,,'`.info
-    fi
-    # If the file does not exist, the user really needs makeinfo;
-    # let's fail without touching anything.
-    test -f $file || exit 1
-    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.
-         You might have modified some files without having the
-         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."
-    exit 1
-    ;;
-esac
-
-exit 0
+# Propagate the correct exit status (expected to be 127 for a program
+# not found, 63 for a program that failed due to version mismatch).
+exit $st
 
 # Local variables:
 # eval: (add-hook 'write-file-hooks 'time-stamp)

mkinstalldirs

@@ -81,9 +81,9 @@ case $dirmode in
       echo "mkdir -p -- $*"
       exec mkdir -p -- "$@"
     else
-      # On NextStep and OpenStep, the `mkdir' command does not
+      # On NextStep and OpenStep, the 'mkdir' command does not
       # recognize any option.  It will interpret all options as
-      # directories to create, and then abort because `.' already
+      # directories to create, and then abort because '.' already
       # exists.
       test -d ./-p && rmdir ./-p
       test -d ./--version && rmdir ./--version

png.5

@@ -1,4 +1,4 @@
-.TH PNG 5 "December 23, 2009"
+.TH PNG 5 "February 6, 2014"
 .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 1.2.41 [December 23, 2009]
- * Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ * Last changed in libpng 1.2.51 [February 6, 2014]
+ * Copyright (c) 1998-2014 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.)
  *
@@ -17,7 +17,7 @@
 #include "png.h"
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_0_52rc01 Your_png_h_is_not_version_1_0_52rc01;
+typedef version_1_2_51 Your_png_h_is_not_version_1_2_51;
 
 /* Version information for C files.  This had better match the version
  * string defined in png.h.
@@ -78,7 +78,8 @@ PNG_CONST int FARDATA png_pass_height[] = {8, 8, 4, 4, 2, 2, 1};
 */
 
 /* Mask to determine which pixels are valid in a pass */
-PNG_CONST int FARDATA png_pass_mask[] = {0x80, 0x08, 0x88, 0x22, 0xaa, 0x55, 0xff};
+PNG_CONST int FARDATA png_pass_mask[] =
+    {0x80, 0x08, 0x88, 0x22, 0xaa, 0x55, 0xff};
 
 /* Mask to determine which pixels to overwrite while displaying */
 PNG_CONST int FARDATA png_pass_dsp_mask[]
@@ -443,7 +444,7 @@ png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
             for (i = 0; i < (int)info_ptr->pcal_nparams; i++)
             {
                png_free(png_ptr, info_ptr->pcal_params[i]);
-               info_ptr->pcal_params[i]=NULL;
+               info_ptr->pcal_params[i] = NULL;
             }
             png_free(png_ptr, info_ptr->pcal_params);
             info_ptr->pcal_params = NULL;
@@ -588,10 +589,10 @@ png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
          for (row = 0; row < (int)info_ptr->height; row++)
          {
             png_free(png_ptr, info_ptr->row_pointers[row]);
-            info_ptr->row_pointers[row]=NULL;
+            info_ptr->row_pointers[row] = NULL;
          }
          png_free(png_ptr, info_ptr->row_pointers);
-         info_ptr->row_pointers=NULL;
+         info_ptr->row_pointers = NULL;
       }
       info_ptr->valid &= ~PNG_INFO_IDAT;
    }
@@ -620,7 +621,7 @@ png_info_destroy(png_structp png_ptr, png_infop info_ptr)
    if (png_ptr->num_chunk_list)
    {
       png_free(png_ptr, png_ptr->chunk_list);
-      png_ptr->chunk_list=NULL;
+      png_ptr->chunk_list = NULL;
       png_ptr->num_chunk_list = 0;
    }
 #endif
@@ -687,8 +688,8 @@ png_convert_to_rfc1123(png_structp png_ptr, png_timep ptime)
           ptime->day % 32, short_months[(ptime->month - 1) % 12],
         ptime->year, ptime->hour % 24, ptime->minute % 60,
           ptime->second % 61);
-      WideCharToMultiByte(CP_ACP, 0, time_buf, -1, png_ptr->time_buffer, 29,
-          NULL, NULL);
+      WideCharToMultiByte(CP_ACP, 0, time_buf, -1, png_ptr->time_buffer,
+          29, NULL, NULL);
    }
 #else
 #ifdef USE_FAR_KEYWORD
@@ -717,20 +718,20 @@ png_convert_to_rfc1123(png_structp png_ptr, png_timep ptime)
 png_charp PNGAPI
 png_get_copyright(png_structp png_ptr)
 {
-   png_ptr = png_ptr;  /* Silence compiler warning about unused png_ptr */
+   PNG_UNUSED(png_ptr)  /* Silence compiler warning about unused png_ptr */
 #ifdef PNG_STRING_COPYRIGHT
       return PNG_STRING_COPYRIGHT
 #else
 #ifdef __STDC__
    return ((png_charp) PNG_STRING_NEWLINE \
-     "libpng version 1.0.52rc01 - December 23, 2009" PNG_STRING_NEWLINE \
-     "Copyright (c) 1998-2009 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
+     "libpng version 1.2.51 - February 6, 2014" PNG_STRING_NEWLINE \
+     "Copyright (c) 1998-2014 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
      "Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
      "Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
      PNG_STRING_NEWLINE);
 #else
-      return ((png_charp) "libpng version 1.0.52rc01 - December 23, 2009\
-      Copyright (c) 1998-2009 Glenn Randers-Pehrson\
+      return ((png_charp) "libpng version 1.2.51 - February 6, 2014\
+      Copyright (c) 1998-2014 Glenn Randers-Pehrson\
       Copyright (c) 1996-1997 Andreas Dilger\
       Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.");
 #endif
@@ -749,7 +750,7 @@ png_charp PNGAPI
 png_get_libpng_ver(png_structp png_ptr)
 {
    /* Version of *.c files used when building libpng */
-   png_ptr = png_ptr;  /* Silence compiler warning about unused png_ptr */
+   PNG_UNUSED(png_ptr)  /* Silence compiler warning about unused png_ptr */
    return ((png_charp) PNG_LIBPNG_VER_STRING);
 }
 
@@ -757,7 +758,7 @@ png_charp PNGAPI
 png_get_header_ver(png_structp png_ptr)
 {
    /* Version of *.h files used when building libpng */
-   png_ptr = png_ptr;  /* Silence compiler warning about unused png_ptr */
+   PNG_UNUSED(png_ptr)  /* Silence compiler warning about unused png_ptr */
    return ((png_charp) PNG_LIBPNG_VER_STRING);
 }
 
@@ -765,7 +766,7 @@ png_charp PNGAPI
 png_get_header_version(png_structp png_ptr)
 {
    /* Returns longer string containing both version and date */
-   png_ptr = png_ptr;  /* Silence compiler warning about unused png_ptr */
+   PNG_UNUSED(png_ptr) /* Silence compiler warning about unused png_ptr */
 #ifdef __STDC__
    return ((png_charp) PNG_HEADER_VERSION_STRING
 #ifndef PNG_READ_SUPPORTED
@@ -1008,14 +1009,6 @@ png_check_IHDR(png_structp png_ptr,
       error = 1;
    }
 
-   if ( width > (PNG_UINT_32_MAX
-                 >> 3)      /* 8-byte RGBA pixels */
-                 - 64       /* bigrowbuf hack */
-                 - 1        /* filter byte */
-                 - 7*8      /* rounding of width to multiple of 8 pixels */
-                 - 8)       /* extra max_pixel_depth pad */
-      png_warning(png_ptr, "Width is too large for libpng to process pixels");
-
    /* Check other values */
    if (bit_depth != 1 && bit_depth != 2 && bit_depth != 4 &&
        bit_depth != 8 && bit_depth != 16)

png.h

@@ -1,7 +1,7 @@
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.0.52rc01 - December 23, 2009
- * Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ * libpng version 1.2.51 - February 6, 2014
+ * Copyright (c) 1998-2014 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.)
  *
@@ -10,7 +10,7 @@
  * 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 1.0.52rc01 - December 23, 2009: Glenn
+ *  libpng versions 0.97, January 1998, through 1.2.51 - February 6, 2014: Glenn
  *  See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -231,7 +231,7 @@
  *    1.2.37beta01-03         13    10237  12.so.0.37[.0]
  *    1.2.37rc01              13    10237  12.so.0.37[.0]
  *    1.2.37                  13    10237  12.so.0.37[.0]
- *    1.2.45                  10    10045  12.so.0.45[.0]
+ *    1.0.45                  10    10045  12.so.0.45[.0]
  *    1.0.46                  10    10046  10.so.0.46[.0]
  *    1.2.38beta01            13    10238  12.so.0.38[.0]
  *    1.2.38rc01-03           13    10238  12.so.0.38[.0]
@@ -251,9 +251,43 @@
  *    1.0.51                  10    10051  10.so.0.51[.0]
  *    1.2.41                  13    10241  12.so.0.41[.0]
  *    1.2.42beta01-02         13    10242  12.so.0.42[.0]
- *    1.2.42rc01-02           13    10242  12.so.0.42[.0]
+ *    1.2.42rc01-05           13    10242  12.so.0.42[.0]
  *    1.0.52                  10    10052  10.so.0.52[.0]
  *    1.2.42                  13    10242  12.so.0.42[.0]
+ *    1.2.43beta01-05         13    10243  12.so.0.43[.0]
+ *    1.0.53rc01-02           10    10053  10.so.0.53[.0]
+ *    1.2.43rc01-02           13    10243  12.so.0.43[.0]
+ *    1.0.53                  10    10053  10.so.0.53[.0]
+ *    1.2.43                  13    10243  12.so.0.43[.0]
+ *    1.2.44beta01-03         13    10244  12.so.0.44[.0]
+ *    1.2.44rc01-03           13    10244  12.so.0.44[.0]
+ *    1.2.44                  13    10244  12.so.0.44[.0]
+ *    1.2.45beta01-03         13    10245  12.so.0.45[.0]
+ *    1.0.55rc01              10    10055  10.so.0.55[.0]
+ *    1.2.45rc01              13    10245  12.so.0.45[.0]
+ *    1.0.55                  10    10055  10.so.0.55[.0]
+ *    1.2.45                  13    10245  12.so.0.45[.0]
+ *    1.2.46rc01-02           13    10246  12.so.0.46[.0]
+ *    1.0.56                  10    10056  10.so.0.56[.0]
+ *    1.2.46                  13    10246  12.so.0.46[.0]
+ *    1.2.47beta01            13    10247  12.so.0.47[.0]
+ *    1.2.47rc01              13    10247  12.so.0.47[.0]
+ *    1.0.57rc01              10    10057  10.so.0.57[.0]
+ *    1.2.47                  13    10247  12.so.0.47[.0]
+ *    1.0.57                  10    10057  10.so.0.57[.0]
+ *    1.2.48beta01            13    10248  12.so.0.48[.0]
+ *    1.2.48rc01-02           13    10248  12.so.0.48[.0]
+ *    1.0.58                  10    10058  10.so.0.58[.0]
+ *    1.2.48                  13    10248  12.so.0.48[.0]
+ *    1.2.49rc01              13    10249  12.so.0.49[.0]
+ *    1.0.59                  10    10059  10.so.0.59[.0]
+ *    1.2.49                  13    10249  12.so.0.49[.0]
+ *    1.0.60                  10    10060  10.so.0.60[.0]
+ *    1.2.50                  13    10250  12.so.0.50[.0]
+ *    1.2.51beta01-05         13    10251  12.so.0.51[.0]
+ *    1.2.51rc01-04           13    10251  12.so.0.51[.0]
+ *    1.0.61                  10    10061  10.so.0.61[.0]
+ *    1.2.51                  13    10251  12.so.0.51[.0]
  *
  *    Henceforth the source version will match the shared-library major
  *    and minor numbers; the shared-library major version number will be
@@ -285,8 +319,8 @@
  *
  * This code is released under the libpng license.
  *
- * libpng versions 1.2.6, August 15, 2004, through 1.0.52rc01, December 23, 2009, are
- * Copyright (c) 2004, 2006-2009 Glenn Randers-Pehrson, and are
+ * libpng versions 1.2.6, August 15, 2004, through 1.2.51, February 6, 2014, 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:
  *
@@ -397,13 +431,13 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    December 23, 2009
+ *    February 6, 2014
  *
  *    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 1.0.52rc01 are Y2K compliant.  It is my belief that earlier
+ *    upward through 1.2.51 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
@@ -459,22 +493,22 @@
  */
 
 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.0.52rc01"
+#define PNG_LIBPNG_VER_STRING "1.2.51"
 #define PNG_HEADER_VERSION_STRING \
-   " libpng version 1.0.52rc01 - December 23, 2009\n"
+   " libpng version 1.2.51 - February 6, 2014\n"
 
 #define PNG_LIBPNG_VER_SONUM   0
-#define PNG_LIBPNG_VER_DLLNUM  10
+#define PNG_LIBPNG_VER_DLLNUM  13
 
 /* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
 #define PNG_LIBPNG_VER_MAJOR   1
-#define PNG_LIBPNG_VER_MINOR   0
-#define PNG_LIBPNG_VER_RELEASE 52
+#define PNG_LIBPNG_VER_MINOR   2
+#define PNG_LIBPNG_VER_RELEASE 51
 /* This should match the numeric part of the final component of
  * PNG_LIBPNG_VER_STRING, omitting any leading zero:
  */
 
-#define PNG_LIBPNG_VER_BUILD  01
+#define PNG_LIBPNG_VER_BUILD  0
 
 /* Release Status */
 #define PNG_LIBPNG_BUILD_ALPHA    1
@@ -491,7 +525,7 @@
 #define PNG_LIBPNG_BUILD_SPECIAL 32 /* Cannot be OR'ed with
                                        PNG_LIBPNG_BUILD_PRIVATE */
 
-#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_RC
+#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_STABLE
 
 /* Careful here.  At one time, Guy wanted to use 082, but that would be octal.
  * We must not include leading zeros.
@@ -499,7 +533,7 @@
  * 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 10052 /* 1.0.52 */
+#define PNG_LIBPNG_VER 10251 /* 1.2.51 */
 
 #ifndef PNG_VERSION_INFO_ONLY
 /* Include the compression library's header */
@@ -1273,7 +1307,16 @@ struct png_struct_def
    png_uint_32 num_rows PNG_DEPSTRUCT;      /* number of rows in current pass */
    png_uint_32 usr_width PNG_DEPSTRUCT;     /* width of row at start of write */
    png_uint_32 rowbytes PNG_DEPSTRUCT;      /* size of row in bytes */
-   png_uint_32 irowbytes PNG_DEPSTRUCT;     /* size of current interlaced row in bytes */
+#if 0 /* Replaced with the following in libpng-1.2.43 */
+   png_size_t irowbytes PNG_DEPSTRUCT;
+#endif
+/* Added in libpng-1.2.43 */
+#ifdef PNG_USER_LIMITS_SUPPORTED
+   /* Added in libpng-1.4.0: Total number of sPLT, text, and unknown
+    * chunks that can be stored (0 means unlimited).
+    */
+   png_uint_32 user_chunk_cache_max PNG_DEPSTRUCT;
+#endif
    png_uint_32 iwidth PNG_DEPSTRUCT;        /* width of current interlaced row in pixels */
    png_uint_32 row_number PNG_DEPSTRUCT;    /* current row in interlace pass */
    png_bytep prev_row PNG_DEPSTRUCT;        /* buffer to save previous (unfiltered) row */
@@ -1505,7 +1548,7 @@ struct png_struct_def
 /* New members added in libpng-1.0.16 and 1.2.6 */
    png_byte compression_type PNG_DEPSTRUCT;
 
-#ifdef PNG_SET_USER_LIMITS_SUPPORTED
+#ifdef PNG_USER_LIMITS_SUPPORTED
    png_uint_32 user_width_max PNG_DEPSTRUCT;
    png_uint_32 user_height_max PNG_DEPSTRUCT;
 #endif
@@ -1530,7 +1573,7 @@ struct png_struct_def
 /* This triggers a compiler error in png.c, if png.c and png.h
  * do not agree upon the version number.
  */
-typedef png_structp version_1_0_52rc01;
+typedef png_structp version_1_2_51;
 
 typedef png_struct FAR * FAR * png_structpp;
 
@@ -2173,10 +2216,10 @@ extern PNG_EXPORT(void,png_free_default) PNGARG((png_structp png_ptr,
 #endif
 
 extern PNG_EXPORT(png_voidp,png_memcpy_check) PNGARG((png_structp png_ptr,
-   png_voidp s1, png_voidp s2, png_uint_32 size));
+   png_voidp s1, png_voidp s2, png_uint_32 size)) PNG_DEPRECATED;
 
 extern PNG_EXPORT(png_voidp,png_memset_check) PNGARG((png_structp png_ptr,
-   png_voidp s1, int value, png_uint_32 size));
+   png_voidp s1, int value, png_uint_32 size)) PNG_DEPRECATED;
 
 #if defined(USE_FAR_KEYWORD)  /* memory model conversion function */
 extern void *png_far_to_near PNGARG((png_structp png_ptr,png_voidp ptr,
@@ -2617,7 +2660,7 @@ extern PNG_EXPORT(void, png_write_png) PNGARG((png_structp png_ptr,
 #      define png_debug(l,m) \
        { \
        int num_tabs=l; \
-       fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
+       fprintf(PNG_DEBUG_FILE,"%s" m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
          (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":"")))); \
        }
 #    endif
@@ -2625,7 +2668,7 @@ extern PNG_EXPORT(void, png_write_png) PNGARG((png_structp png_ptr,
 #      define png_debug1(l,m,p1) \
        { \
        int num_tabs=l; \
-       fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
+       fprintf(PNG_DEBUG_FILE,"%s" m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
          (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1); \
        }
 #    endif
@@ -2633,7 +2676,7 @@ extern PNG_EXPORT(void, png_write_png) PNGARG((png_structp png_ptr,
 #      define png_debug2(l,m,p1,p2) \
        { \
        int num_tabs=l; \
-       fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
+       fprintf(PNG_DEBUG_FILE,"%s" m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
          (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1,p2); \
        }
 #    endif

pngconf.h

@@ -1,8 +1,8 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.0.52rc01 - December 23, 2009
- * Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ * libpng version 1.2.51 - February 6, 2014
+ * 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.)
  *
@@ -20,12 +20,18 @@
 #ifndef PNGCONF_H
 #define PNGCONF_H
 
-#define PNG_1_0_X
+#define PNG_1_2_X
 
 /*
  * PNG_USER_CONFIG has to be defined on the compiler command line. This
  * includes the resource compiler for Windows DLL configurations.
  */
+#ifdef PNG_USER_CONFIG
+#  ifndef PNG_USER_PRIVATEBUILD
+#    define PNG_USER_PRIVATEBUILD
+#  endif
+#include "pngusr.h"
+#endif
 
 /* PNG_CONFIGURE_LIBPNG is set by the "configure" script. */
 #ifdef PNG_CONFIGURE_LIBPNG
@@ -34,14 +40,6 @@
 #endif
 #endif
 
-#ifdef PNG_1_0_X
-#  ifndef PNG_iTXt_SUPPORTED
-#    ifndef PNG_NO_iTXt
-#      define PNG_NO_iTXt
-#    endif
-#  endif
-#endif
-
 /*
  * Added at libpng-1.2.8
  *
@@ -88,6 +86,18 @@
 #endif
 /* End of material added at libpng-1.2.19/1.2.21 */
 
+/* Added at libpng-1.2.51 (ported from 1.4.6) */
+#ifndef PNG_UNUSED
+/* Unused formal parameter warnings are silenced using the following macro
+ * which is expected to have no bad effects on performance (optimizing
+ * compilers will probably remove it entirely).  Note that if you replace
+ * it with something other than whitespace, you must include the terminating
+ * semicolon.
+ */
+#  define PNG_UNUSED(param) (void)param;
+#endif
+/* End of material added to libpng-1.4.6 */
+
 /* This is the size of the compression buffer, and thus the size of
  * an IDAT chunk.  Make this whatever size you feel is best for your
  * machine.  One of these will be allocated per png_struct.  When this
@@ -624,22 +634,18 @@
 #  ifndef PNG_NO_READ_BACKGROUND
 #    define PNG_READ_BACKGROUND_SUPPORTED
 #  endif
-#ifndef PNG_1_0_X
 #  ifndef PNG_NO_READ_16_TO_8
 #    define PNG_READ_16_TO_8_SUPPORTED
 #  endif
-#endif
 #  ifndef PNG_NO_READ_FILLER
 #    define PNG_READ_FILLER_SUPPORTED
 #  endif
 #  ifndef PNG_NO_READ_GAMMA
 #    define PNG_READ_GAMMA_SUPPORTED
 #  endif
-#ifndef PNG_1_0_X
 #  ifndef PNG_NO_READ_GRAY_TO_RGB
 #    define PNG_READ_GRAY_TO_RGB_SUPPORTED
 #  endif
-#endif
 #  ifndef PNG_NO_READ_SWAP_ALPHA
 #    define PNG_READ_SWAP_ALPHA_SUPPORTED
 #  endif
@@ -853,6 +859,13 @@
 #  endif
 #endif /* PNG_1_0_X */
 
+/* Added at libpng-1.0.53 and 1.2.43 */
+#ifndef PNG_USER_LIMITS_SUPPORTED
+#  ifndef PNG_NO_USER_LIMITS
+#    define PNG_USER_LIMITS_SUPPORTED
+#  endif
+#endif
+
 /* Added at libpng-1.0.16 and 1.2.6.  To accept all valid PNGS no matter
  * how large, set these limits to 0x7fffffffL
  */
@@ -863,11 +876,16 @@
 #  define PNG_USER_HEIGHT_MAX 1000000L
 #endif
 
-#ifndef PNG_1_0_X
-/* Added at libpng-1.2.41 */
+/* Added at libpng-1.2.43.  To accept all valid PNGs no matter
+ * how large, set these two limits to 0.
+ */
 #ifndef PNG_USER_CHUNK_CACHE_MAX
-#  define PNG_USER_CHUNK_CACHE_MAX 0x7fffffffL
+#  define PNG_USER_CHUNK_CACHE_MAX 32765
 #endif
+
+/* Added at libpng-1.2.43 */
+#ifndef PNG_USER_CHUNK_MALLOC_MAX
+#  define PNG_USER_CHUNK_MALLOC_MAX 0
 #endif
 
 #ifndef PNG_LITERAL_SHARP

pngerror.c

@@ -1,8 +1,8 @@
 
 /* pngerror.c - stub functions for i/o and memory allocation
  *
- * Last changed in libpng 1.2.41 [December 23, 2009]
- * Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ * Last changed in libpng 1.2.51 [February 6, 2014]
+ * Copyright (c) 1998-2014 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.)
  *
@@ -87,12 +87,17 @@ png_error(png_structp png_ptr, png_const_charp error_message)
 void PNGAPI
 png_err(png_structp png_ptr)
 {
+   /* Prior to 1.2.45 the error_fn received a NULL pointer, expressed
+    * erroneously as '\0', instead of the empty string "".  This was
+    * apparently an error, introduced in libpng-1.2.20, and png_default_error
+    * will crash in this case.
+    */
    if (png_ptr != NULL && png_ptr->error_fn != NULL)
-      (*(png_ptr->error_fn))(png_ptr, '\0');
+      (*(png_ptr->error_fn))(png_ptr, "");
 
    /* If the custom handler doesn't exist, or if it returns,
       use the default handler, which will not return. */
-   png_default_error(png_ptr, '\0');
+   png_default_error(png_ptr, "");
 }
 #endif /* PNG_ERROR_TEXT_SUPPORTED */
 
@@ -181,8 +186,13 @@ png_format_buffer(png_structp png_ptr, png_charp buffer, png_const_charp
    {
       buffer[iout++] = ':';
       buffer[iout++] = ' ';
-      png_memcpy(buffer + iout, error_message, PNG_MAX_ERROR_TEXT);
-      buffer[iout + PNG_MAX_ERROR_TEXT - 1] = '\0';
+
+      iin = 0;
+      while (iin < PNG_MAX_ERROR_TEXT-1 && error_message[iin] != '\0')
+         buffer[iout++] = error_message[iin++];
+
+      /* iin < PNG_MAX_ERROR_TEXT, so the following is safe: */
+      buffer[iout] = '\0';
    }
 }
 
@@ -256,20 +266,20 @@ png_default_error(png_structp png_ptr, png_const_charp error_message)
        error_number[offset - 1] = '\0';
        fprintf(stderr, "libpng error no. %s: %s",
           error_number, error_message + offset + 1);
-       fprintf(stderr, "\n");
+       fprintf(stderr, PNG_STRING_NEWLINE);
      }
      else
      {
        fprintf(stderr, "libpng error: %s, offset=%d",
           error_message, offset);
-       fprintf(stderr, "\n");
+       fprintf(stderr, PNG_STRING_NEWLINE);
      }
    }
    else
 #endif
    {
       fprintf(stderr, "libpng error: %s", error_message);
-      fprintf(stderr, "\n");
+      fprintf(stderr, PNG_STRING_NEWLINE);
    }
 #endif
 
@@ -280,7 +290,7 @@ png_default_error(png_structp png_ptr, png_const_charp error_message)
    {
       jmp_buf jmpbuf;
       png_memcpy(jmpbuf, png_ptr->jmpbuf, png_sizeof(jmp_buf));
-      longjmp(jmpbuf, 1);
+     longjmp(jmpbuf,1);
    }
 #  else
    longjmp(png_ptr->jmpbuf, 1);
@@ -290,7 +300,7 @@ png_default_error(png_structp png_ptr, png_const_charp error_message)
    /* Here if not setjmp support or if png_ptr is null. */
    PNG_ABORT();
 #ifndef PNG_CONSOLE_IO_SUPPORTED
-   error_message = error_message; /* Make compiler happy */
+   PNG_UNUSED(error_message) /* Make compiler happy */
 #endif
 }
 
@@ -320,25 +330,25 @@ png_default_warning(png_structp png_ptr, png_const_charp warning_message)
        warning_number[offset + 1] = '\0';
        fprintf(stderr, "libpng warning no. %s: %s",
           warning_number, warning_message + offset);
-       fprintf(stderr, "\n");
+       fprintf(stderr, PNG_STRING_NEWLINE);
      }
      else
      {
        fprintf(stderr, "libpng warning: %s",
           warning_message);
-       fprintf(stderr, "\n");
+       fprintf(stderr, PNG_STRING_NEWLINE);
      }
    }
    else
 #  endif
    {
      fprintf(stderr, "libpng warning: %s", warning_message);
-       fprintf(stderr, "\n");
+     fprintf(stderr, PNG_STRING_NEWLINE);
    }
 #else
-   warning_message = warning_message; /* Make compiler happy */
+   PNG_UNUSED(warning_message) /* Make compiler happy */
 #endif
-   png_ptr = png_ptr; /* Make compiler happy */
+   PNG_UNUSED(png_ptr) /* Make compiler happy */
 }
 #endif /* PNG_WARNINGS_SUPPORTED */
 

pnggccrd.c

@@ -1,6 +1,16 @@
-/* pnggccrd.c was removed from libpng-1.2.20. */
-
-/* This code snippet is for use by configure's compilation test. */
+/* pnggccrd.c
+ *
+ * Last changed in libpng 1.2.48 [March 8, 2012]
+ * Copyright (c) 1998-2012 Glenn Randers-Pehrson
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ *
+ * This code snippet is for use by configure's compilation test. Most of the
+ * remainder of the file was removed from libpng-1.2.20, and all of the
+ * assembler code was removed from libpng-1.2.48.
+ */
 
 #if (!defined _MSC_VER) && \
     defined(PNG_ASSEMBLER_CODE_SUPPORTED) && \
@@ -8,96 +18,9 @@
 
 int PNGAPI png_dummy_mmx_support(void);
 
-static int _mmx_supported = 2; // 0: no MMX; 1: MMX supported; 2: not tested
-
-int PNGAPI
-png_dummy_mmx_support(void) __attribute__((noinline));
-
-int PNGAPI
-png_dummy_mmx_support(void)
+int PNGAPI png_dummy_mmx_support(void)
 {
-   int result;
-#ifdef PNG_MMX_CODE_SUPPORTED  // superfluous, but what the heck
-    __asm__ __volatile__ (
-#ifdef __x86_64__
-        "pushq %%rbx          \n\t"  // rbx gets clobbered by CPUID instruction
-        "pushq %%rcx          \n\t"  // so does rcx...
-        "pushq %%rdx          \n\t"  // ...and rdx (but rcx & rdx safe on Linux)
-        "pushfq               \n\t"  // save Eflag to stack
-        "popq %%rax           \n\t"  // get Eflag from stack into rax
-        "movq %%rax, %%rcx    \n\t"  // make another copy of Eflag in rcx
-        "xorl $0x200000, %%eax \n\t" // toggle ID bit in Eflag (i.e., bit 21)
-        "pushq %%rax          \n\t"  // save modified Eflag back to stack
-        "popfq                \n\t"  // restore modified value to Eflag reg
-        "pushfq               \n\t"  // save Eflag to stack
-        "popq %%rax           \n\t"  // get Eflag from stack
-        "pushq %%rcx          \n\t"  // save original Eflag to stack
-        "popfq                \n\t"  // restore original Eflag
-#else
-        "pushl %%ebx          \n\t"  // ebx gets clobbered by CPUID instruction
-        "pushl %%ecx          \n\t"  // so does ecx...
-        "pushl %%edx          \n\t"  // ...and edx (but ecx & edx safe on Linux)
-        "pushfl               \n\t"  // save Eflag to stack
-        "popl %%eax           \n\t"  // get Eflag from stack into eax
-        "movl %%eax, %%ecx    \n\t"  // make another copy of Eflag in ecx
-        "xorl $0x200000, %%eax \n\t" // toggle ID bit in Eflag (i.e., bit 21)
-        "pushl %%eax          \n\t"  // save modified Eflag back to stack
-        "popfl                \n\t"  // restore modified value to Eflag reg
-        "pushfl               \n\t"  // save Eflag to stack
-        "popl %%eax           \n\t"  // get Eflag from stack
-        "pushl %%ecx          \n\t"  // save original Eflag to stack
-        "popfl                \n\t"  // restore original Eflag
-#endif
-        "xorl %%ecx, %%eax    \n\t"  // compare new Eflag with original Eflag
-        "jz 0f                \n\t"  // if same, CPUID instr. is not supported
-
-        "xorl %%eax, %%eax    \n\t"  // set eax to zero
-//      ".byte  0x0f, 0xa2    \n\t"  // CPUID instruction (two-byte opcode)
-        "cpuid                \n\t"  // get the CPU identification info
-        "cmpl $1, %%eax       \n\t"  // make sure eax return non-zero value
-        "jl 0f                \n\t"  // if eax is zero, MMX is not supported
-
-        "xorl %%eax, %%eax    \n\t"  // set eax to zero and...
-        "incl %%eax           \n\t"  // ...increment eax to 1.  This pair is
-                                     // faster than the instruction "mov eax, 1"
-        "cpuid                \n\t"  // get the CPU identification info again
-        "andl $0x800000, %%edx \n\t" // mask out all bits but MMX bit (23)
-        "cmpl $0, %%edx       \n\t"  // 0 = MMX not supported
-        "jz 0f                \n\t"  // non-zero = yes, MMX IS supported
-
-        "movl $1, %%eax       \n\t"  // set return value to 1
-        "jmp  1f              \n\t"  // DONE:  have MMX support
-
-    "0:                       \n\t"  // .NOT_SUPPORTED: target label for jump instructions
-        "movl $0, %%eax       \n\t"  // set return value to 0
-    "1:                       \n\t"  // .RETURN: target label for jump instructions
-#ifdef __x86_64__
-        "popq %%rdx           \n\t"  // restore rdx
-        "popq %%rcx           \n\t"  // restore rcx
-        "popq %%rbx           \n\t"  // restore rbx
-#else
-        "popl %%edx           \n\t"  // restore edx
-        "popl %%ecx           \n\t"  // restore ecx
-        "popl %%ebx           \n\t"  // restore ebx
-#endif
-
-//      "ret                  \n\t"  // DONE:  no MMX support
-                                     // (fall through to standard C "ret")
-
-        : "=a" (result)              // output list
-
-        :                            // any variables used on input (none)
-
-                                     // no clobber list
-//      , "%ebx", "%ecx", "%edx"     // GRR:  we handle these manually
-//      , "memory"   // if write to a variable gcc thought was in a reg
-//      , "cc"       // "condition codes" (flag bits)
-    );
-    _mmx_supported = result;
-#else
-    _mmx_supported = 0;
-#endif /* PNG_MMX_CODE_SUPPORTED */
-
-    return _mmx_supported;
+     /* 0: no MMX; 1: MMX supported; 2: not tested */
+     return 2;
 }
 #endif

pngget.c

@@ -1,8 +1,8 @@
 
 /* pngget.c - retrieval of values from info struct
  *
- * Last changed in libpng 1.2.41 [December 23, 2009]
- * Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ * Last changed in libpng 1.2.51 [February 6, 2014]
+ * Copyright (c) 1998-2014 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.)
  *
@@ -872,13 +872,11 @@ png_get_user_chunk_ptr(png_structp png_ptr)
 }
 #endif
 
-#ifdef PNG_WRITE_SUPPORTED
 png_uint_32 PNGAPI
 png_get_compression_buffer_size(png_structp png_ptr)
 {
    return (png_uint_32)(png_ptr? png_ptr->zbuf_size : 0L);
 }
-#endif
 
 #ifdef PNG_ASSEMBLER_CODE_SUPPORTED
 #ifndef PNG_1_0_X
@@ -895,7 +893,7 @@ png_uint_32 PNGAPI
 png_get_asm_flagmask (int flag_select)
 {
     /* Obsolete, to be removed from libpng-1.4.0 */
-    flag_select=flag_select;
+    PNG_UNUSED(flag_select)
     return 0L;
 }
 
@@ -905,7 +903,7 @@ png_uint_32 PNGAPI
 png_get_mmx_flagmask (int flag_select, int *compilerID)
 {
     /* Obsolete, to be removed from libpng-1.4.0 */
-    flag_select=flag_select;
+    PNG_UNUSED(flag_select)
     *compilerID = -1;   /* unknown (i.e., no asm/MMX code compiled) */
     return 0L;
 }
@@ -929,7 +927,8 @@ png_get_mmx_rowbytes_threshold (png_structp png_ptr)
 #endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */
 
 #ifdef PNG_SET_USER_LIMITS_SUPPORTED
-/* These functions were added to libpng 1.2.6 */
+/* These functions were added to libpng 1.2.6 but not enabled
+* by default. They will be enabled in libpng-1.4.0 */
 png_uint_32 PNGAPI
 png_get_user_width_max (png_structp png_ptr)
 {

pngmem.c

@@ -1,8 +1,8 @@
 
 /* pngmem.c - stub functions for memory allocation
  *
- * Last changed in libpng 1.2.41 [December 23, 2009]
- * Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ * Last changed in libpng 1.2.41 [February 25, 2010]
+ * Copyright (c) 1998-2010 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.)
  *
@@ -115,7 +115,7 @@ png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
  * result, we would be truncating potentially larger memory requests
  * (which should cause a fatal error) and introducing major problems.
  */
-png_voidp PNGAPI
+png_voidp /* PRIVATE */
 png_calloc(png_structp png_ptr, png_uint_32 size)
 {
    png_voidp ret;
@@ -201,7 +201,7 @@ png_malloc_default(png_structp png_ptr, png_uint_32 size)
             {
 #ifndef PNG_USER_MEM_SUPPORTED
                if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
-                  png_error(png_ptr, "Out Of Memory."); /* Note "O" and "M" */
+                  png_error(png_ptr, "Out Of Memory."); /* Note "O", "M" */
                else
                   png_warning(png_ptr, "Out Of Memory.");
 #endif
@@ -229,7 +229,7 @@ png_malloc_default(png_structp png_ptr, png_uint_32 size)
             {
 #ifndef PNG_USER_MEM_SUPPORTED
                if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
-                  png_error(png_ptr, "Out Of memory."); /* Note "O" and "M" */
+                  png_error(png_ptr, "Out Of memory."); /* Note "O", "m" */
                else
                   png_warning(png_ptr, "Out Of memory.");
 #endif
@@ -442,7 +442,7 @@ png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
  * have the ability to do that.
  */
 
-png_voidp PNGAPI
+png_voidp /* PRIVATE */
 png_calloc(png_structp png_ptr, png_uint_32 size)
 {
    png_voidp ret;

pngpread.c

@@ -1,8 +1,8 @@
 
 /* pngpread.c - read a png file in push mode
  *
- * Last changed in libpng 1.2.41 [December 23, 2009]
- * Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ * Last changed in libpng 1.2.44 [June 26, 2010]
+ * Copyright (c) 1998-2010 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.)
  *
@@ -71,30 +71,6 @@ 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);
@@ -331,7 +307,9 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
       png_ptr->mode |= PNG_HAVE_IDAT;
       png_ptr->process_mode = PNG_READ_IDAT_MODE;
       png_push_have_info(png_ptr, info_ptr);
-      png_ptr->zstream.avail_out = (uInt)png_ptr->irowbytes;
+      png_ptr->zstream.avail_out =
+          (uInt) PNG_ROWBYTES(png_ptr->pixel_depth,
+          png_ptr->iwidth) + 1;
       png_ptr->zstream.next_out = png_ptr->row_buf;
       return;
    }
@@ -527,7 +505,7 @@ 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
@@ -540,7 +518,7 @@ 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
@@ -553,7 +531,7 @@ 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
@@ -564,7 +542,7 @@ 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;
@@ -700,8 +678,13 @@ 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(png_ptr,
+      png_ptr->save_buffer = (png_bytep)png_malloc_warn(png_ptr,
          (png_uint_32)new_max);
+      if (png_ptr->save_buffer == NULL)
+      {
+        png_free(png_ptr, old_buffer);
+        png_error(png_ptr, "Insufficient memory for save_buffer");
+      }
       png_memcpy(png_ptr->save_buffer, old_buffer, png_ptr->save_buffer_size);
       png_free(png_ptr, old_buffer);
       png_ptr->save_buffer_max = new_max;
@@ -776,8 +759,7 @@ png_push_read_IDAT(png_structp png_ptr)
 
       png_calculate_crc(png_ptr, png_ptr->save_buffer_ptr, save_size);
 
-      if (!(png_ptr->flags & PNG_FLAG_ZLIB_FINISHED))
-         png_process_IDAT_data(png_ptr, png_ptr->save_buffer_ptr, save_size);
+      png_process_IDAT_data(png_ptr, png_ptr->save_buffer_ptr, save_size);
 
       png_ptr->idat_size -= save_size;
       png_ptr->buffer_size -= save_size;
@@ -800,8 +782,8 @@ png_push_read_IDAT(png_structp png_ptr)
          save_size = png_ptr->current_buffer_size;
 
       png_calculate_crc(png_ptr, png_ptr->current_buffer_ptr, save_size);
-      if (!(png_ptr->flags & PNG_FLAG_ZLIB_FINISHED))
-        png_process_IDAT_data(png_ptr, png_ptr->current_buffer_ptr, save_size);
+
+      png_process_IDAT_data(png_ptr, png_ptr->current_buffer_ptr, save_size);
 
       png_ptr->idat_size -= save_size;
       png_ptr->buffer_size -= save_size;
@@ -826,60 +808,101 @@ void /* PRIVATE */
 png_process_IDAT_data(png_structp png_ptr, png_bytep buffer,
    png_size_t buffer_length)
 {
-   int ret;
-
-   if ((png_ptr->flags & PNG_FLAG_ZLIB_FINISHED) && buffer_length)
-      png_error(png_ptr, "Extra compression data");
+   /* The caller checks for a non-zero buffer length. */
+   if (!(buffer_length > 0) || buffer == NULL)
+      png_error(png_ptr, "No IDAT data (internal error)");
 
+   /* This routine must process all the data it has been given
+    * before returning, calling the row callback as required to
+    * handle the uncompressed results.
+    */
    png_ptr->zstream.next_in = buffer;
    png_ptr->zstream.avail_in = (uInt)buffer_length;
-   for (;;)
+
+   /* Keep going until the decompressed data is all processed
+    * or the stream marked as finished.
+    */
+   while (png_ptr->zstream.avail_in > 0 &&
+	  !(png_ptr->flags & PNG_FLAG_ZLIB_FINISHED))
    {
-      ret = inflate(&png_ptr->zstream, Z_PARTIAL_FLUSH);
-      if (ret != Z_OK)
+      int ret;
+
+      /* We have data for zlib, but we must check that zlib
+       * has somewhere to put the results.  It doesn't matter
+       * if we don't expect any results -- it may be the input
+       * data is just the LZ end code.
+       */
+      if (!(png_ptr->zstream.avail_out > 0))
       {
-         if (ret == Z_STREAM_END)
-         {
-            if (png_ptr->zstream.avail_in)
-               png_error(png_ptr, "Extra compressed data");
-
-            if (!(png_ptr->zstream.avail_out))
-            {
-               png_push_process_row(png_ptr);
-            }
-
-            png_ptr->mode |= PNG_AFTER_IDAT;
-            png_ptr->flags |= PNG_FLAG_ZLIB_FINISHED;
-            break;
-         }
-         else if (ret == Z_BUF_ERROR)
-            break;
-
-         else
-            png_error(png_ptr, "Decompression Error");
-      }
-      if (!(png_ptr->zstream.avail_out))
-      {
-         if ((
-#ifdef PNG_READ_INTERLACING_SUPPORTED
-             png_ptr->interlaced && png_ptr->pass > 6) ||
-             (!png_ptr->interlaced &&
-#endif
-             png_ptr->row_number == png_ptr->num_rows))
-         {
-           if (png_ptr->zstream.avail_in)
-             png_warning(png_ptr, "Too much data in IDAT chunks");
-           png_ptr->flags |= PNG_FLAG_ZLIB_FINISHED;
-           break;
-         }
-         png_push_process_row(png_ptr);
-         png_ptr->zstream.avail_out = (uInt)png_ptr->irowbytes;
+         png_ptr->zstream.avail_out =
+             (uInt) PNG_ROWBYTES(png_ptr->pixel_depth,
+             png_ptr->iwidth) + 1;
          png_ptr->zstream.next_out = png_ptr->row_buf;
       }
 
-      else
-         break;
+      /* Using Z_SYNC_FLUSH here means that an unterminated
+       * LZ stream can still be handled (a stream with a missing
+       * end code), otherwise (Z_NO_FLUSH) a future zlib
+       * implementation might defer output and, therefore,
+       * change the current behavior.  (See comments in inflate.c
+       * for why this doesn't happen at present with zlib 1.2.5.)
+       */
+      ret = inflate(&png_ptr->zstream, Z_SYNC_FLUSH);
+
+      /* Check for any failure before proceeding. */
+      if (ret != Z_OK && ret != Z_STREAM_END)
+      {
+	 /* Terminate the decompression. */
+	 png_ptr->flags |= PNG_FLAG_ZLIB_FINISHED;
+
+         /* This may be a truncated stream (missing or
+	  * damaged end code).  Treat that as a warning.
+	  */
+         if (png_ptr->row_number >= png_ptr->num_rows ||
+	     png_ptr->pass > 6)
+	    png_warning(png_ptr, "Truncated compressed data in IDAT");
+	 else
+	    png_error(png_ptr, "Decompression error in IDAT");
+
+	 /* Skip the check on unprocessed input */
+         return;
+      }
+
+      /* Did inflate output any data? */
+      if (png_ptr->zstream.next_out != png_ptr->row_buf)
+      {
+	 /* Is this unexpected data after the last row?
+	  * If it is, artificially terminate the LZ output
+	  * here.
+	  */
+         if (png_ptr->row_number >= png_ptr->num_rows ||
+	     png_ptr->pass > 6)
+         {
+	    /* Extra data. */
+	    png_warning(png_ptr, "Extra compressed data in IDAT");
+            png_ptr->flags |= PNG_FLAG_ZLIB_FINISHED;
+	    /* Do no more processing; skip the unprocessed
+	     * input check below.
+	     */
+            return;
+	 }
+
+	 /* Do we have a complete row? */
+	 if (png_ptr->zstream.avail_out == 0)
+	    png_push_process_row(png_ptr);
+      }
+
+      /* And check for the end of the stream. */
+      if (ret == Z_STREAM_END)
+	 png_ptr->flags |= PNG_FLAG_ZLIB_FINISHED;
    }
+
+   /* All the data should have been processed, if anything
+    * is left at this point we have bytes of IDAT data
+    * after the zlib end code.
+    */
+   if (png_ptr->zstream.avail_in > 0)
+      png_warning(png_ptr, "Extra compression data");
 }
 
 void /* PRIVATE */
@@ -895,8 +918,8 @@ png_push_process_row(png_structp png_ptr)
        png_ptr->row_info.width);
 
    png_read_filter_row(png_ptr, &(png_ptr->row_info),
-      png_ptr->row_buf + 1, png_ptr->prev_row + 1,
-      (int)(png_ptr->row_buf[0]));
+       png_ptr->row_buf + 1, png_ptr->prev_row + 1,
+       (int)(png_ptr->row_buf[0]));
 
    png_memcpy_check(png_ptr, png_ptr->prev_row, png_ptr->row_buf,
       png_ptr->rowbytes + 1);
@@ -911,7 +934,7 @@ png_push_process_row(png_structp png_ptr)
       if (png_ptr->pass < 6)
 /*       old interface (pre-1.0.9):
          png_do_read_interlace(&(png_ptr->row_info),
-            png_ptr->row_buf + 1, png_ptr->pass, png_ptr->transformations);
+             png_ptr->row_buf + 1, png_ptr->pass, png_ptr->transformations);
  */
          png_do_read_interlace(png_ptr);
 
@@ -946,7 +969,7 @@ png_push_process_row(png_structp png_ptr)
 
             if (png_ptr->pass == 6 && png_ptr->height <= 4)
             {
-                png_push_have_row(png_ptr, png_bytep_NULL);
+                  png_push_have_row(png_ptr, png_bytep_NULL);
                 png_read_push_finish_row(png_ptr);
             }
 
@@ -986,7 +1009,7 @@ png_push_process_row(png_structp png_ptr)
 
             for (i = 0; i < 4 && png_ptr->pass == 2; i++)
             {
-               png_push_have_row(png_ptr, png_bytep_NULL);
+                  png_push_have_row(png_ptr, png_bytep_NULL);
                png_read_push_finish_row(png_ptr);
             }
 
@@ -1036,13 +1059,13 @@ png_push_process_row(png_structp png_ptr)
 
             for (i = 0; i < 2 && png_ptr->pass == 4; i++)
             {
-               png_push_have_row(png_ptr, png_bytep_NULL);
+                  png_push_have_row(png_ptr, png_bytep_NULL);
                png_read_push_finish_row(png_ptr);
             }
 
             if (png_ptr->pass == 6) /* Pass 5 might be empty */
             {
-               png_push_have_row(png_ptr, png_bytep_NULL);
+                  png_push_have_row(png_ptr, png_bytep_NULL);
                png_read_push_finish_row(png_ptr);
             }
 
@@ -1061,7 +1084,7 @@ png_push_process_row(png_structp png_ptr)
 
             if (png_ptr->pass == 6) /* Skip top generated row */
             {
-               png_push_have_row(png_ptr, png_bytep_NULL);
+                  png_push_have_row(png_ptr, png_bytep_NULL);
                png_read_push_finish_row(png_ptr);
             }
 
@@ -1075,7 +1098,7 @@ png_push_process_row(png_structp png_ptr)
             if (png_ptr->pass != 6)
                break;
 
-            png_push_have_row(png_ptr, png_bytep_NULL);
+                  png_push_have_row(png_ptr, png_bytep_NULL);
             png_read_push_finish_row(png_ptr);
          }
       }
@@ -1141,9 +1164,6 @@ png_read_push_finish_row(png_structp png_ptr)
             png_pass_start[png_ptr->pass]) /
             png_pass_inc[png_ptr->pass];
 
-         png_ptr->irowbytes = PNG_ROWBYTES(png_ptr->pixel_depth,
-            png_ptr->iwidth) + 1;
-
          if (png_ptr->transformations & PNG_INTERLACE)
             break;
 
@@ -1157,515 +1177,6 @@ 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_error(png_ptr, "Out of place tEXt");
-         info_ptr = info_ptr; /* To quiet some compiler warnings */
-      }
-
-#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_uint_32)(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_uint_32)png_sizeof(png_text));
-      text_ptr->compression = PNG_TEXT_COMPRESSION_NONE;
-      text_ptr->key = key;
-#ifdef PNG_iTXt_SUPPORTED
-      text_ptr->lang = NULL;
-      text_ptr->lang_key = NULL;
-#endif
-      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_error(png_ptr, "Out of place zTXt");
-         info_ptr = info_ptr; /* To quiet some compiler warnings */
-      }
-
-#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_uint_32)(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_uint_32)(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_uint_32)(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_uint_32)png_sizeof(png_text));
-      text_ptr->compression = PNG_TEXT_COMPRESSION_zTXt;
-      text_ptr->key = key;
-#ifdef PNG_iTXt_SUPPORTED
-      text_ptr->lang = NULL;
-      text_ptr->lang_key = NULL;
-#endif
-      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_error(png_ptr, "Out of place iTXt");
-         info_ptr = info_ptr; /* To quiet some compiler warnings */
-      }
-
-#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_uint_32)(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_uint_32)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;
-
-   if (!(png_ptr->chunk_name[0] & 0x20))
-   {
-#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
-      if (png_handle_as_unknown(png_ptr, 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");
-
-      info_ptr = info_ptr; /* To quiet some compiler warnings */
-   }
-
-#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
-   if (png_ptr->flags & PNG_FLAG_KEEP_UNKNOWN_CHUNKS)
-   {
-#ifdef PNG_MAX_MALLOC_64K
-      if (length > (png_uint_32)65535L)
-      {
-          png_warning(png_ptr, "unknown chunk too large to fit in memory");
-          skip = length - (png_uint_32)65535L;
-          length = (png_uint_32)65535L;
-      }
-#endif
-      png_memcpy((png_charp)png_ptr->unknown_chunk.name,
-                 (png_charp)png_ptr->chunk_name, 
-                 png_sizeof(png_ptr->unknown_chunk.name));
-      png_ptr->unknown_chunk.name[png_sizeof(png_ptr->unknown_chunk.name) - 1]
-        = '\0';
-
-      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_uint_32)length);
-         png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length);
-      }
-
-#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_ptr->chunk_name[0] & 0x20))
-               if (png_handle_as_unknown(png_ptr, 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)
 {

pngread.c

@@ -1,8 +1,8 @@
 
 /* pngread.c - read a PNG file
  *
- * Last changed in libpng 1.2.41 [December 23, 2009]
- * Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ * Last changed in libpng 1.2.51 [February 6, 2014]
+ * Copyright (c) 1998-2014 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
@@ -19,7 +19,6 @@
 #include "png.h"
 #ifdef PNG_READ_SUPPORTED
 
-
 /* Create a PNG structure for reading, and allocate any memory needed. */
 png_structp PNGAPI
 png_create_read_struct(png_const_charp user_png_ver, png_voidp error_ptr,
@@ -31,7 +30,9 @@ png_create_read_struct(png_const_charp user_png_ver, png_voidp error_ptr,
       warn_fn, png_voidp_NULL, png_malloc_ptr_NULL, png_free_ptr_NULL));
 }
 
-/* Alternate create PNG structure for reading, and allocate any memory needed. */
+/* Alternate create PNG structure for reading, and allocate any memory
+ * needed.
+ */
 png_structp PNGAPI
 png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
    png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr,
@@ -64,9 +65,11 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
       return (NULL);
 
    /* Added at libpng-1.2.6 */
-#ifdef PNG_SET_USER_LIMITS_SUPPORTED
+#ifdef PNG_USER_LIMITS_SUPPORTED
    png_ptr->user_width_max = PNG_USER_WIDTH_MAX;
    png_ptr->user_height_max = PNG_USER_HEIGHT_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_SETJMP_SUPPORTED
@@ -231,7 +234,8 @@ png_read_init_2(png_structp png_ptr, png_const_charp user_png_ver,
       png_ptr->flags = 0;
 #endif
       png_error(png_ptr,
-      "The png struct allocated by the application for reading is too small.");
+      "The png struct allocated by the application for reading is"
+      " too small.");
    }
    if (png_sizeof(png_info) > png_info_size)
    {
@@ -240,7 +244,8 @@ png_read_init_2(png_structp png_ptr, png_const_charp user_png_ver,
       png_ptr->flags = 0;
 #endif
       png_error(png_ptr,
-        "The info struct allocated by application for reading is too small.");
+        "The info struct allocated by application for reading is"
+        " too small.");
    }
    png_read_init_3(&png_ptr, user_png_ver, png_struct_size);
 }
@@ -270,7 +275,8 @@ png_read_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
 #else
         png_ptr->warning_fn = NULL;
         png_warning(png_ptr,
-         "Application uses deprecated png_read_init() and should be recompiled.");
+         "Application uses deprecated png_read_init() and should be"
+         " recompiled.");
         break;
 #endif
       }
@@ -317,7 +323,8 @@ png_read_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
    {
       case Z_OK: /* Do nothing */ break;
       case Z_STREAM_ERROR: png_error(png_ptr, "zlib memory error"); break;
-      case Z_VERSION_ERROR: png_error(png_ptr, "zlib version error"); break;
+      case Z_VERSION_ERROR: png_error(png_ptr, "zlib version error");
+          break;
       default: png_error(png_ptr, "Unknown zlib error");
    }
 
@@ -558,6 +565,7 @@ png_read_update_info(png_structp png_ptr, png_infop info_ptr)
    else
       png_warning(png_ptr,
       "Ignoring extra png_read_update_info() call; row buffer not reallocated");
+
    png_read_transform_info(png_ptr, info_ptr);
 }
 
@@ -608,7 +616,8 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
    if (png_ptr->transformations & PNG_FILLER)
       png_warning(png_ptr, "PNG_READ_FILLER_SUPPORTED is not defined.");
 #endif
-#if defined(PNG_WRITE_PACKSWAP_SUPPORTED) && !defined(PNG_READ_PACKSWAP_SUPPORTED)
+#if defined(PNG_WRITE_PACKSWAP_SUPPORTED) && \
+    !defined(PNG_READ_PACKSWAP_SUPPORTED)
    if (png_ptr->transformations & PNG_PACKSWAP)
       png_warning(png_ptr, "PNG_READ_PACKSWAP_SUPPORTED is not defined.");
 #endif
@@ -711,7 +720,9 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
       png_error(png_ptr, "Invalid attempt to read row data");
 
    png_ptr->zstream.next_out = png_ptr->row_buf;
-   png_ptr->zstream.avail_out = (uInt)png_ptr->irowbytes;
+   png_ptr->zstream.avail_out =
+       (uInt)(PNG_ROWBYTES(png_ptr->pixel_depth,
+       png_ptr->iwidth) + 1);
    do
    {
       if (!(png_ptr->zstream.avail_in))
@@ -1178,7 +1189,8 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
 
 /* Free all memory used by the read (old method) */
 void /* PRIVATE */
-png_read_destroy(png_structp png_ptr, png_infop info_ptr, png_infop end_info_ptr)
+png_read_destroy(png_structp png_ptr, png_infop info_ptr,
+    png_infop end_info_ptr)
 {
 #ifdef PNG_SETJMP_SUPPORTED
    jmp_buf tmp_jmp;
@@ -1288,12 +1300,6 @@ png_read_destroy(png_structp png_ptr, png_infop info_ptr, png_infop end_info_ptr
    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.
     */
@@ -1399,7 +1405,7 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
    if (transforms & PNG_TRANSFORM_EXPAND)
       if ((png_ptr->bit_depth < 8) ||
           (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) ||
-          (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)))
+          (info_ptr->valid & PNG_INFO_tRNS))
          png_set_expand(png_ptr);
 #endif
 
@@ -1418,14 +1424,8 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
     * [0,65535] to the original [0,7] or [0,31], or whatever range the
     * colors were originally in:
     */
-   if ((transforms & PNG_TRANSFORM_SHIFT)
-       && png_get_valid(png_ptr, info_ptr, PNG_INFO_sBIT))
-   {
-      png_color_8p sig_bit;
-
-      png_get_sBIT(png_ptr, info_ptr, &sig_bit);
-      png_set_shift(png_ptr, sig_bit);
-   }
+   if ((transforms & PNG_TRANSFORM_SHIFT) && (info_ptr->valid & PNG_INFO_sBIT))
+      png_set_shift(png_ptr, &info_ptr->sig_bit);
 #endif
 
 #ifdef PNG_READ_BGR_SUPPORTED
@@ -1500,8 +1500,8 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
    /* Read rest of file, and get additional chunks in info_ptr - REQUIRED */
    png_read_end(png_ptr, info_ptr);
 
-   transforms = transforms; /* Quiet compiler warnings */
-   params = params;
+   PNG_UNUSED(transforms) /* Quiet compiler warnings */
+   PNG_UNUSED(params)
 
 }
 #endif /* PNG_INFO_IMAGE_SUPPORTED */

pngrio.c

@@ -1,8 +1,8 @@
 
 /* pngrio.c - functions for data input
  *
- * Last changed in libpng 1.2.41 [December 23, 2009]
- * Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ * Last changed in libpng 1.2.43 [February 25, 2010]
+ * Copyright (c) 1998-2010 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.)
  *
@@ -92,7 +92,8 @@ png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
    if ((png_bytep)n_data == data)
    {
 #ifdef _WIN32_WCE
-      if ( !ReadFile((HANDLE)(png_ptr->io_ptr), data, length, &check, NULL) )
+      if ( !ReadFile((HANDLE)(png_ptr->io_ptr), data, length, &check,
+          NULL) )
          check = 0;
 #else
       check = fread(n_data, 1, length, io_ptr);

pngrtran.c

@@ -1,8 +1,8 @@
 
 /* pngrtran.c - transforms the data in a row for PNG readers
  *
- * Last changed in libpng 1.2.41 [December 23, 2009]
- * Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ * Last changed in libpng 1.2.51 [February 6, 2014]
+ * Copyright (c) 1998-2014 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.)
  *
@@ -432,8 +432,10 @@ png_set_dither(png_structp png_ptr, png_colorp palette,
                         png_ptr->palette_to_index[png_ptr->index_to_palette[j]]
                            = png_ptr->palette_to_index[num_new_palette];
 
-                        png_ptr->index_to_palette[j] = (png_byte)num_new_palette;
-                        png_ptr->palette_to_index[num_new_palette] = (png_byte)j;
+                        png_ptr->index_to_palette[j] =
+                            (png_byte)num_new_palette;
+                        png_ptr->palette_to_index[num_new_palette] =
+                            (png_byte)j;
                      }
                      if (num_new_palette <= maximum_colors)
                         break;
@@ -502,7 +504,8 @@ png_set_dither(png_structp png_ptr, png_colorp palette,
          {
             /* int dr = abs(ir - r); */
             int dr = ((ir > r) ? ir - r : r - ir);
-            int index_r = (ir << (PNG_DITHER_BLUE_BITS + PNG_DITHER_GREEN_BITS));
+            int index_r = (ir << (PNG_DITHER_BLUE_BITS +
+                PNG_DITHER_GREEN_BITS));
 
             for (ig = 0; ig < num_green; ig++)
             {
@@ -673,10 +676,21 @@ void PNGAPI
 png_set_rgb_to_gray(png_structp png_ptr, int error_action, double red,
    double green)
 {
-   int red_fixed = (int)((float)red*100000.0 + 0.5);
-   int green_fixed = (int)((float)green*100000.0 + 0.5);
+   int red_fixed, green_fixed;
    if (png_ptr == NULL)
       return;
+   if (red > 21474.83647 || red < -21474.83648 ||
+       green > 21474.83647 || green < -21474.83648)
+   {
+      png_warning(png_ptr, "ignoring out of range rgb_to_gray coefficients");
+      red_fixed = -1;
+      green_fixed = -1;
+   }
+   else
+   {
+      red_fixed = (int)((float)red*100000.0 + 0.5);
+      green_fixed = (int)((float)green*100000.0 + 0.5);
+   }
    png_set_rgb_to_gray_fixed(png_ptr, error_action, red_fixed, green_fixed);
 }
 #endif
@@ -772,8 +786,9 @@ png_init_read_transformations(png_structp png_ptr)
   if (png_ptr != NULL)
 #endif
   {
-#if defined(PNG_READ_BACKGROUND_SUPPORTED) || defined(PNG_READ_SHIFT_SUPPORTED) \
- || defined(PNG_READ_GAMMA_SUPPORTED)
+#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \
+    defined(PNG_READ_SHIFT_SUPPORTED) || \
+    defined(PNG_READ_GAMMA_SUPPORTED)
    int color_type = png_ptr->color_type;
 #endif
 
@@ -902,7 +917,10 @@ png_init_read_transformations(png_structp png_ptr)
     for (i=0; i<png_ptr->num_trans; i++)
     {
       if (png_ptr->trans[i] != 0 && png_ptr->trans[i] != 0xff)
+      {
         k=1; /* Partial transparency is present */
+        break;
+      }
     }
     if (k == 0)
       png_ptr->transformations &= ~PNG_GAMMA;
@@ -912,6 +930,7 @@ png_init_read_transformations(png_structp png_ptr)
         png_ptr->gamma != 0.0)
    {
       png_build_gamma_table(png_ptr);
+
 #ifdef PNG_READ_BACKGROUND_SUPPORTED
       if (png_ptr->transformations & PNG_BACKGROUND)
       {
@@ -969,7 +988,8 @@ png_init_read_transformations(png_structp png_ptr)
                   back.red = (png_byte)(pow(
                      (double)png_ptr->background.red/255, gs) * 255.0 + .5);
                   back.green = (png_byte)(pow(
-                     (double)png_ptr->background.green/255, gs) * 255.0 + .5);
+                     (double)png_ptr->background.green/255, gs) * 255.0
+                         + .5);
                   back.blue = (png_byte)(pow(
                      (double)png_ptr->background.blue/255, gs) * 255.0 + .5);
                }
@@ -1146,6 +1166,7 @@ png_init_read_transformations(png_structp png_ptr)
 
 #ifdef PNG_READ_SHIFT_SUPPORTED
    if ((png_ptr->transformations & PNG_SHIFT) &&
+      !(png_ptr->transformations & PNG_EXPAND) &&
       (color_type == PNG_COLOR_TYPE_PALETTE))
    {
       png_uint_16 i;
@@ -1166,6 +1187,8 @@ png_init_read_transformations(png_structp png_ptr)
          png_ptr->palette[i].green >>= sg;
          png_ptr->palette[i].blue >>= sb;
       }
+
+      png_ptr->transformations &= ~PNG_SHIFT;
    }
 #endif  /* PNG_READ_SHIFT_SUPPORTED */
  }
@@ -1190,8 +1213,7 @@ png_read_transform_info(png_structp png_ptr, png_infop info_ptr)
    {
       if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
       {
-         if (png_ptr->num_trans &&
-              (png_ptr->transformations & PNG_EXPAND_tRNS))
+         if (png_ptr->num_trans)
             info_ptr->color_type = PNG_COLOR_TYPE_RGB_ALPHA;
          else
             info_ptr->color_type = PNG_COLOR_TYPE_RGB;
@@ -1383,7 +1405,8 @@ png_do_read_transformations(png_structp png_ptr)
    if (png_ptr->transformations & PNG_RGB_TO_GRAY)
    {
       int rgb_error =
-         png_do_rgb_to_gray(png_ptr, &(png_ptr->row_info), png_ptr->row_buf + 1);
+         png_do_rgb_to_gray(png_ptr, &(png_ptr->row_info),
+             png_ptr->row_buf + 1);
       if (rgb_error)
       {
          png_ptr->rgb_to_gray_status=1;
@@ -2395,7 +2418,8 @@ png_do_rgb_to_gray(png_structp png_ptr, png_row_infop row_info, png_bytep row)
                   {
                      png_uint_16 red_1   = png_ptr->gamma_16_to_1[(red&0xff) >>
                                   png_ptr->gamma_shift][red>>8];
-                     png_uint_16 green_1 = png_ptr->gamma_16_to_1[(green&0xff) >>
+                     png_uint_16 green_1 =
+                         png_ptr->gamma_16_to_1[(green&0xff) >>
                                   png_ptr->gamma_shift][green>>8];
                      png_uint_16 blue_1  = png_ptr->gamma_16_to_1[(blue&0xff) >>
                                   png_ptr->gamma_shift][blue>>8];
@@ -2491,13 +2515,14 @@ png_do_rgb_to_gray(png_structp png_ptr, png_row_infop row_info, png_bytep row)
                   else
                   {
                      png_uint_16 red_1   = png_ptr->gamma_16_to_1[(red&0xff) >>
-                                  png_ptr->gamma_shift][red>>8];
-                     png_uint_16 green_1 = png_ptr->gamma_16_to_1[(green&0xff) >>
-                                  png_ptr->gamma_shift][green>>8];
+                         png_ptr->gamma_shift][red>>8];
+                     png_uint_16 green_1 =
+                         png_ptr->gamma_16_to_1[(green&0xff) >>
+                         png_ptr->gamma_shift][green>>8];
                      png_uint_16 blue_1  = png_ptr->gamma_16_to_1[(blue&0xff) >>
-                                  png_ptr->gamma_shift][blue>>8];
+                         png_ptr->gamma_shift][blue>>8];
                      png_uint_16 gray16  = (png_uint_16)((rc * red_1
-                                  + gc * green_1 + bc * blue_1)>>15);
+                         + gc * green_1 + bc * blue_1)>>15);
                      w = png_ptr->gamma_16_from_1[(gray16&0xff) >>
                          png_ptr->gamma_shift][gray16 >> 8];
                      rgb_error |= 1;
@@ -2596,7 +2621,8 @@ png_build_grayscale_palette(int bit_depth, png_colorp palette)
 }
 
 /* This function is currently unused.  Do we really need it? */
-#if defined(PNG_READ_DITHER_SUPPORTED) && defined(PNG_CORRECT_PALETTE_SUPPORTED)
+#if defined(PNG_READ_DITHER_SUPPORTED) && \
+  defined(PNG_CORRECT_PALETTE_SUPPORTED)
 void /* PRIVATE */
 png_correct_palette(png_structp png_ptr, png_colorp palette,
    int num_palette)
@@ -2604,7 +2630,8 @@ png_correct_palette(png_structp png_ptr, png_colorp palette,
    png_debug(1, "in png_correct_palette");
 
 #if defined(PNG_READ_BACKGROUND_SUPPORTED) && \
-    defined(PNG_READ_GAMMA_SUPPORTED) && defined(PNG_FLOATING_POINT_SUPPORTED)
+    defined(PNG_READ_GAMMA_SUPPORTED) && \
+  defined(PNG_FLOATING_POINT_SUPPORTED)
    if (png_ptr->transformations & (PNG_GAMMA | PNG_BACKGROUND))
    {
       png_color back, back_1;
@@ -2625,8 +2652,8 @@ png_correct_palette(png_structp png_ptr, png_colorp palette,
 
          g = 1.0 / (png_ptr->background_gamma * png_ptr->screen_gamma);
 
-         if (png_ptr->background_gamma_type == PNG_BACKGROUND_GAMMA_SCREEN ||
-             fabs(g - 1.0) < PNG_GAMMA_THRESHOLD)
+         if (png_ptr->background_gamma_type == PNG_BACKGROUND_GAMMA_SCREEN
+             || fabs(g - 1.0) < PNG_GAMMA_THRESHOLD)
          {
             back.red = png_ptr->background.red;
             back.green = png_ptr->background.green;
@@ -3615,10 +3642,10 @@ png_do_gamma(png_row_infop row_info, png_bytep row,
                   int d = *sp & 0x03;
 
                   *sp = (png_byte)(
-                        ((((int)gamma_table[a|(a>>2)|(a>>4)|(a>>6)])   ) & 0xc0)|
-                        ((((int)gamma_table[(b<<2)|b|(b>>2)|(b>>4)])>>2) & 0x30)|
-                        ((((int)gamma_table[(c<<4)|(c<<2)|c|(c>>2)])>>4) & 0x0c)|
-                        ((((int)gamma_table[(d<<6)|(d<<4)|(d<<2)|d])>>6) ));
+                      ((((int)gamma_table[a|(a>>2)|(a>>4)|(a>>6)])   ) & 0xc0)|
+                      ((((int)gamma_table[(b<<2)|b|(b>>2)|(b>>4)])>>2) & 0x30)|
+                      ((((int)gamma_table[(c<<4)|(c<<2)|c|(c>>2)])>>4) & 0x0c)|
+                      ((((int)gamma_table[(d<<6)|(d<<4)|(d<<2)|d])>>6) ));
                   sp++;
                }
             }
@@ -3632,7 +3659,7 @@ png_do_gamma(png_row_infop row_info, png_bytep row,
                   int lsb = *sp & 0x0f;
 
                   *sp = (png_byte)((((int)gamma_table[msb | (msb >> 4)]) & 0xf0)
-                          | (((int)gamma_table[(lsb << 4) | lsb]) >> 4));
+                      | (((int)gamma_table[(lsb << 4) | lsb]) >> 4));
                   sp++;
                }
             }

pngrutil.c

@@ -1,8 +1,8 @@
 
 /* pngrutil.c - utilities to read a PNG file
  *
- * Last changed in libpng 1.2.41 [December 23, 2009]
- * Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ * Last changed in libpng 1.2.51 [February 6, 2014]
+ * Copyright (c) 1998-2014 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
@@ -26,7 +26,8 @@
 #ifdef PNG_FLOATING_POINT_SUPPORTED
 #  ifdef WIN32_WCE_OLD
 /* The strtod() function is not supported on WindowsCE */
-__inline double png_strtod(png_structp png_ptr, PNG_CONST char *nptr, char **endptr)
+__inline double png_strtod(png_structp png_ptr, PNG_CONST char *nptr,
+    char **endptr)
 {
    double result = 0;
    int len;
@@ -217,6 +218,97 @@ png_crc_error(png_structp png_ptr)
 
 #if defined(PNG_READ_zTXt_SUPPORTED) || defined(PNG_READ_iTXt_SUPPORTED) || \
     defined(PNG_READ_iCCP_SUPPORTED)
+static png_size_t
+png_inflate(png_structp png_ptr, const png_byte *data, png_size_t size,
+        png_bytep output, png_size_t output_size)
+{
+   png_size_t count = 0;
+
+   png_ptr->zstream.next_in = (png_bytep)data; /* const_cast: VALID */
+   png_ptr->zstream.avail_in = size;
+
+   while (1)
+   {
+      int ret, avail;
+
+      /* Reset the output buffer each time round - we empty it
+       * after every inflate call.
+       */
+      png_ptr->zstream.next_out = png_ptr->zbuf;
+      png_ptr->zstream.avail_out = png_ptr->zbuf_size;
+
+      ret = inflate(&png_ptr->zstream, Z_NO_FLUSH);
+      avail = png_ptr->zbuf_size - png_ptr->zstream.avail_out;
+
+      /* First copy/count any new output - but only if we didn't
+       * get an error code.
+       */
+      if ((ret == Z_OK || ret == Z_STREAM_END) && avail > 0)
+      {
+         if (output != 0 && output_size > count)
+         {
+            png_size_t copy = output_size - count;
+            if ((png_size_t) avail < copy) copy = (png_size_t) avail;
+            png_memcpy(output + count, png_ptr->zbuf, copy);
+         }
+         count += avail;
+      }
+
+      if (ret == Z_OK)
+         continue;
+
+      /* Termination conditions - always reset the zstream, it
+       * must be left in inflateInit state.
+       */
+      png_ptr->zstream.avail_in = 0;
+      inflateReset(&png_ptr->zstream);
+
+      if (ret == Z_STREAM_END)
+         return count; /* NOTE: may be zero. */
+
+      /* Now handle the error codes - the API always returns 0
+       * and the error message is dumped into the uncompressed
+       * buffer if available.
+       */
+      {
+         PNG_CONST char *msg;
+         if (png_ptr->zstream.msg != 0)
+            msg = png_ptr->zstream.msg;
+         else
+         {
+#if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE)
+            char umsg[52];
+
+            switch (ret)
+            {
+               case Z_BUF_ERROR:
+                  msg = "Buffer error in compressed datastream in %s chunk";
+                  break;
+               case Z_DATA_ERROR:
+                  msg = "Data error in compressed datastream in %s chunk";
+                  break;
+               default:
+                  msg = "Incomplete compressed datastream in %s chunk";
+                  break;
+            }
+
+            png_snprintf(umsg, sizeof umsg, msg, png_ptr->chunk_name);
+            msg = umsg;
+#else
+            msg = "Damaged compressed datastream in chunk other than IDAT";
+#endif
+         }
+
+         png_warning(png_ptr, msg);
+      }
+
+      /* 0 means an error - notice that this code simple ignores
+       * zero length compressed chunks as a result.
+       */
+      return 0;
+   }
+}
+
 /*
  * Decompress trailing data in a chunk.  The assumption is that chunkdata
  * points at an allocated area holding the contents of a chunk with a
@@ -226,171 +318,109 @@ png_crc_error(png_structp png_ptr)
  */
 void /* PRIVATE */
 png_decompress_chunk(png_structp png_ptr, int comp_type,
-                              png_size_t chunklength,
-                              png_size_t prefix_size, png_size_t *newlength)
+    png_size_t chunklength,
+    png_size_t prefix_size, png_size_t *newlength)
 {
-   static PNG_CONST char msg[] = "Error decoding compressed chunk";
-   png_charp text;
-   png_size_t text_size;
-
-   if (comp_type == PNG_COMPRESSION_TYPE_BASE)
+   /* The caller should guarantee this */
+   if (prefix_size > chunklength)
    {
-      int ret = Z_OK;
-      png_ptr->zstream.next_in = (png_bytep)(png_ptr->chunkdata + prefix_size);
-      png_ptr->zstream.avail_in = (uInt)(chunklength - prefix_size);
-      png_ptr->zstream.next_out = png_ptr->zbuf;
-      png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
-
-      text_size = 0;
-      text = NULL;
-
-      while (png_ptr->zstream.avail_in)
-      {
-         ret = inflate(&png_ptr->zstream, Z_PARTIAL_FLUSH);
-         if (ret != Z_OK && ret != Z_STREAM_END)
-         {
-            if (png_ptr->zstream.msg != NULL)
-               png_warning(png_ptr, png_ptr->zstream.msg);
-            else
-               png_warning(png_ptr, msg);
-            inflateReset(&png_ptr->zstream);
-            png_ptr->zstream.avail_in = 0;
-
-            if (text ==  NULL)
-            {
-               text_size = prefix_size + png_sizeof(msg) + 1;
-               text = (png_charp)png_malloc_warn(png_ptr, text_size);
-               if (text ==  NULL)
-                 {
-                    png_free(png_ptr, png_ptr->chunkdata);
-                    png_ptr->chunkdata = NULL;
-                    png_error(png_ptr, "Not enough memory to decompress chunk");
-                 }
-               png_memcpy(text, png_ptr->chunkdata, prefix_size);
-            }
-
-            text[text_size - 1] = 0x00;
-
-            /* Copy what we can of the error message into the text chunk */
-            text_size = (png_size_t)(chunklength -
-              (text - png_ptr->chunkdata) - 1);
-            if (text_size > png_sizeof(msg))
-               text_size = png_sizeof(msg);
-            png_memcpy(text + prefix_size, msg, text_size);
-            break;
-         }
-         if (!png_ptr->zstream.avail_out || ret == Z_STREAM_END)
-         {
-            if (text == NULL)
-            {
-               text_size = prefix_size +
-                   png_ptr->zbuf_size - png_ptr->zstream.avail_out;
-               text = (png_charp)png_malloc_warn(png_ptr, text_size + 1);
-               if (text ==  NULL)
-               {
-                  png_free(png_ptr, png_ptr->chunkdata);
-                  png_ptr->chunkdata = NULL;
-                  png_error(png_ptr,
-                    "Not enough memory to decompress chunk.");
-               }
-               png_memcpy(text + prefix_size, png_ptr->zbuf,
-                    text_size - prefix_size);
-               png_memcpy(text, png_ptr->chunkdata, prefix_size);
-               *(text + text_size) = 0x00;
-            }
-            else
-            {
-               png_charp tmp;
-
-               tmp = text;
-                  text = (png_charp)png_malloc_warn(png_ptr,
-                     (png_uint_32)(text_size +
-                      png_ptr->zbuf_size - png_ptr->zstream.avail_out + 1));
-               if (text == NULL)
-               {
-                  png_free(png_ptr, tmp);
-                  png_free(png_ptr, png_ptr->chunkdata);
-                  png_ptr->chunkdata = NULL;
-                  png_error(png_ptr,
-                    "Not enough memory to decompress chunk..");
-               }
-               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) = 0x00;
-            }
-            if (ret == Z_STREAM_END)
-               break;
-            else
-            {
-               png_ptr->zstream.next_out = png_ptr->zbuf;
-               png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
-            }
-         }
-      }
-      if (ret != Z_STREAM_END)
-      {
-#if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE)
-         char umsg[52];
-
-         if (ret == Z_BUF_ERROR)
-            png_snprintf(umsg, 52,
-                "Buffer error in compressed datastream in %s chunk",
-                png_ptr->chunk_name);
-
-         else if (ret == Z_DATA_ERROR)
-            png_snprintf(umsg, 52,
-                "Data error in compressed datastream in %s chunk",
-                png_ptr->chunk_name);
-
-         else
-            png_snprintf(umsg, 52,
-                "Incomplete compressed datastream in %s chunk",
-                png_ptr->chunk_name);
-
-         png_warning(png_ptr, umsg);
-#else
-         png_warning(png_ptr,
-            "Incomplete compressed datastream in chunk other than IDAT");
-#endif
-         text_size = prefix_size;
-         if (text ==  NULL)
-         {
-            text = (png_charp)png_malloc_warn(png_ptr, text_size+1);
-            if (text == NULL)
-              {
-                png_free(png_ptr, png_ptr->chunkdata);
-                png_ptr->chunkdata = NULL;
-                png_error(png_ptr, "Not enough memory for text.");
-              }
-            png_memcpy(text, png_ptr->chunkdata, prefix_size);
-         }
-         *(text + text_size) = 0x00;
-      }
-
-      inflateReset(&png_ptr->zstream);
-      png_ptr->zstream.avail_in = 0;
-
-      png_free(png_ptr, png_ptr->chunkdata);
-      png_ptr->chunkdata = text;
-      *newlength=text_size;
+      /* The recovery is to delete the chunk. */
+      png_warning(png_ptr, "invalid chunklength");
+      prefix_size = 0; /* To delete everything */
    }
+
+   else if (comp_type == PNG_COMPRESSION_TYPE_BASE)
+   {
+      png_size_t expanded_size = png_inflate(png_ptr,
+                (png_bytep)(png_ptr->chunkdata + prefix_size),
+                chunklength - prefix_size,
+                0/*output*/, 0/*output size*/);
+
+      /* Now check the limits on this chunk - if the limit fails the
+       * compressed data will be removed, the prefix will remain.
+       */
+      if (prefix_size >= (~(png_size_t)0) - 1 ||
+         expanded_size >= (~(png_size_t)0) - 1 - prefix_size
+#ifdef PNG_USER_CHUNK_MALLOC_MAX
+         || ((PNG_USER_CHUNK_MALLOC_MAX > 0) &&
+          prefix_size + expanded_size >= PNG_USER_CHUNK_MALLOC_MAX - 1)
+#endif
+          )
+         png_warning(png_ptr, "Exceeded size limit while expanding chunk");
+
+      /* If the size is zero either there was an error and a message
+       * has already been output (warning) or the size really is zero
+       * and we have nothing to do - the code will exit through the
+       * error case below.
+       */
+      else if (expanded_size > 0)
+      {
+         /* Success (maybe) - really uncompress the chunk. */
+         png_size_t new_size = 0;
+
+         png_charp text = png_malloc_warn(png_ptr,
+             prefix_size + expanded_size + 1);
+
+         if (text != NULL)
+         {
+            png_memcpy(text, png_ptr->chunkdata, prefix_size);
+            new_size = png_inflate(png_ptr,
+                (png_bytep)(png_ptr->chunkdata + prefix_size),
+                chunklength - prefix_size,
+                (png_bytep)(text + prefix_size), expanded_size);
+            text[prefix_size + expanded_size] = 0; /* just in case */
+
+            if (new_size == expanded_size)
+            {
+               png_free(png_ptr, png_ptr->chunkdata);
+               png_ptr->chunkdata = text;
+               *newlength = prefix_size + expanded_size;
+               return; /* The success return! */
+            }
+
+            png_warning(png_ptr, "png_inflate logic error");
+            png_free(png_ptr, text);
+         }
+         else
+          png_warning(png_ptr, "Not enough memory to decompress chunk.");
+      }
+   }
+
    else /* if (comp_type != PNG_COMPRESSION_TYPE_BASE) */
    {
 #if defined(PNG_STDIO_SUPPORTED) && !defined(_WIN32_WCE)
       char umsg[50];
 
-      png_snprintf(umsg, 50, "Unknown zTXt compression type %d", comp_type);
+      png_snprintf(umsg, sizeof umsg, "Unknown zTXt compression type %d",
+          comp_type);
       png_warning(png_ptr, umsg);
 #else
       png_warning(png_ptr, "Unknown zTXt compression type");
 #endif
 
-      *(png_ptr->chunkdata + prefix_size) = 0x00;
-      *newlength = prefix_size;
+      /* The recovery is to simply drop the data. */
    }
+
+   /* Generic error return - leave the prefix, delete the compressed
+    * data, reallocate the chunkdata to remove the potentially large
+    * amount of compressed data.
+    */
+   {
+      png_charp text = png_malloc_warn(png_ptr, prefix_size + 1);
+      if (text != NULL)
+      {
+         if (prefix_size > 0)
+            png_memcpy(text, png_ptr->chunkdata, prefix_size);
+         png_free(png_ptr, png_ptr->chunkdata);
+         png_ptr->chunkdata = text;
+
+         /* This is an extra zero in the 'uncompressed' part. */
+         *(png_ptr->chunkdata + prefix_size) = 0x00;
+      }
+      /* Ignore a malloc error here - it is safe. */
+   }
+
+   *newlength = prefix_size;
 }
 #endif
 
@@ -629,7 +659,7 @@ png_handle_IEND(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
    }
    png_crc_finish(png_ptr, length);
 
-   info_ptr = info_ptr; /* Quiet compiler warnings about unused info_ptr */
+   PNG_UNUSED(info_ptr) /* Quiet compiler warnings about unused info_ptr */
 }
 
 #ifdef PNG_READ_gAMA_SUPPORTED
@@ -881,9 +911,11 @@ png_handle_cHRM(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
                green_x, green_y, blue_x, blue_y);
 #else
             fprintf(stderr, "wx=%ld, wy=%ld, rx=%ld, ry=%ld\n",
-               int_x_white, int_y_white, int_x_red, int_y_red);
+               (long)int_x_white, (long)int_y_white,
+               (long)int_x_red, (long)int_y_red);
             fprintf(stderr, "gx=%ld, gy=%ld, bx=%ld, by=%ld\n",
-               int_x_green, int_y_green, int_x_blue, int_y_blue);
+               (long)int_x_green, (long)int_y_green,
+               (long)int_x_blue, (long)int_y_blue);
 #endif
 #endif /* PNG_CONSOLE_IO_SUPPORTED */
          }
@@ -1137,6 +1169,24 @@ png_handle_sPLT(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 
    png_debug(1, "in png_handle_sPLT");
 
+#ifdef PNG_USER_LIMITS_SUPPORTED
+
+   if (png_ptr->user_chunk_cache_max != 0)
+   {
+      if (png_ptr->user_chunk_cache_max == 1)
+      {
+         png_crc_finish(png_ptr, length);
+         return;
+      }
+      if (--png_ptr->user_chunk_cache_max == 1)
+      {
+         png_warning(png_ptr, "No space in chunk cache for sPLT");
+         png_crc_finish(png_ptr, length);
+         return;
+      }
+   }
+#endif
+
    if (!(png_ptr->mode & PNG_HAVE_IHDR))
       png_error(png_ptr, "Missing IHDR before sPLT");
    else if (png_ptr->mode & PNG_HAVE_IDAT)
@@ -1169,7 +1219,8 @@ png_handle_sPLT(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 
    png_ptr->chunkdata[slength] = 0x00;
 
-   for (entry_start = (png_bytep)png_ptr->chunkdata; *entry_start; entry_start++)
+   for (entry_start = (png_bytep)png_ptr->chunkdata; *entry_start;
+       entry_start++)
       /* Empty loop to find end of name */ ;
    ++entry_start;
 
@@ -1479,15 +1530,16 @@ png_handle_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
       return;
    }
 
-   num = length / 2 ;
-   if (num != (unsigned int) png_ptr->num_palette || num >
-      (unsigned int) PNG_MAX_PALETTE_LENGTH)
+   if (length > 2*PNG_MAX_PALETTE_LENGTH ||
+       length != (unsigned int) (2*png_ptr->num_palette))
    {
       png_warning(png_ptr, "Incorrect hIST chunk length");
       png_crc_finish(png_ptr, length);
       return;
    }
 
+   num = length / 2 ;
+
    for (i = 0; i < num; i++)
    {
       png_byte buf[2];
@@ -1756,12 +1808,21 @@ png_handle_sCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
       return;
    }
 
+   /* Need unit type, width, \0, height: minimum 4 bytes */
+   else if (length < 4)
+   {
+      png_warning(png_ptr, "sCAL chunk too short");
+      png_crc_finish(png_ptr, length);
+      return;
+   }
+
    png_debug1(2, "Allocating and reading sCAL chunk data (%lu bytes)",
       length + 1);
    png_ptr->chunkdata = (png_charp)png_malloc_warn(png_ptr, length + 1);
    if (png_ptr->chunkdata == NULL)
    {
       png_warning(png_ptr, "Out of memory while processing sCAL chunk");
+      png_crc_finish(png_ptr, length);
       return;
    }
    slength = (png_size_t)length;
@@ -1783,6 +1844,8 @@ png_handle_sCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
    if (*vp)
    {
       png_warning(png_ptr, "malformed width string in sCAL chunk");
+      png_free(png_ptr, png_ptr->chunkdata);
+      png_ptr->chunkdata = NULL;
       return;
    }
 #else
@@ -1791,21 +1854,22 @@ png_handle_sCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
    if (swidth == NULL)
    {
       png_warning(png_ptr, "Out of memory while processing sCAL chunk width");
+      png_free(png_ptr, png_ptr->chunkdata);
+      png_ptr->chunkdata = NULL;
       return;
    }
-   png_memcpy(swidth, ep, (png_size_t)png_strlen(ep));
+   png_memcpy(swidth, ep, (png_size_t)png_strlen(ep) + 1);
 #endif
 #endif
 
-   for (ep = png_ptr->chunkdata; *ep; ep++)
+   for (ep = png_ptr->chunkdata + 1; *ep; ep++)
       /* Empty loop */ ;
    ep++;
 
    if (png_ptr->chunkdata + slength < ep)
    {
       png_warning(png_ptr, "Truncated sCAL chunk");
-#if defined(PNG_FIXED_POINT_SUPPORTED) && \
-    !defined(PNG_FLOATING_POINT_SUPPORTED)
+#if defined(PNG_FIXED_POINT_SUPPORTED) && !defined(PNG_FLOATING_POINT_SUPPORTED)
       png_free(png_ptr, swidth);
 #endif
       png_free(png_ptr, png_ptr->chunkdata);
@@ -1818,6 +1882,11 @@ png_handle_sCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
    if (*vp)
    {
       png_warning(png_ptr, "malformed height string in sCAL chunk");
+      png_free(png_ptr, png_ptr->chunkdata);
+      png_ptr->chunkdata = NULL;
+#if defined(PNG_FIXED_POINT_SUPPORTED) && !defined(PNG_FLOATING_POINT_SUPPORTED)
+      png_free(png_ptr, swidth);
+#endif
       return;
    }
 #else
@@ -1826,9 +1895,14 @@ png_handle_sCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
    if (sheight == NULL)
    {
       png_warning(png_ptr, "Out of memory while processing sCAL chunk height");
+      png_free(png_ptr, png_ptr->chunkdata);
+      png_ptr->chunkdata = NULL;
+#if defined(PNG_FIXED_POINT_SUPPORTED) && !defined(PNG_FLOATING_POINT_SUPPORTED)
+      png_free(png_ptr, swidth);
+#endif
       return;
    }
-   png_memcpy(sheight, ep, (png_size_t)png_strlen(ep));
+   png_memcpy(sheight, ep, (png_size_t)png_strlen(ep) + 1);
 #endif
 #endif
 
@@ -1923,6 +1997,23 @@ png_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 
    png_debug(1, "in png_handle_tEXt");
 
+#ifdef PNG_USER_LIMITS_SUPPORTED
+   if (png_ptr->user_chunk_cache_max != 0)
+   {
+      if (png_ptr->user_chunk_cache_max == 1)
+      {
+         png_crc_finish(png_ptr, length);
+         return;
+      }
+      if (--png_ptr->user_chunk_cache_max == 1)
+      {
+         png_warning(png_ptr, "No space in chunk cache for tEXt");
+         png_crc_finish(png_ptr, length);
+         return;
+      }
+   }
+#endif
+
    if (!(png_ptr->mode & PNG_HAVE_IHDR))
       png_error(png_ptr, "Missing IHDR before tEXt");
 
@@ -2008,6 +2099,23 @@ png_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 
    png_debug(1, "in png_handle_zTXt");
 
+#ifdef PNG_USER_LIMITS_SUPPORTED
+   if (png_ptr->user_chunk_cache_max != 0)
+   {
+      if (png_ptr->user_chunk_cache_max == 1)
+      {
+         png_crc_finish(png_ptr, length);
+         return;
+      }
+      if (--png_ptr->user_chunk_cache_max == 1)
+      {
+         png_warning(png_ptr, "No space in chunk cache for zTXt");
+         png_crc_finish(png_ptr, length);
+         return;
+      }
+   }
+#endif
+
    if (!(png_ptr->mode & PNG_HAVE_IHDR))
       png_error(png_ptr, "Missing IHDR before zTXt");
 
@@ -2112,6 +2220,23 @@ png_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 
    png_debug(1, "in png_handle_iTXt");
 
+#ifdef PNG_USER_LIMITS_SUPPORTED
+   if (png_ptr->user_chunk_cache_max != 0)
+   {
+      if (png_ptr->user_chunk_cache_max == 1)
+      {
+         png_crc_finish(png_ptr, length);
+         return;
+      }
+      if (--png_ptr->user_chunk_cache_max == 1)
+      {
+         png_warning(png_ptr, "No space in chunk cache for iTXt");
+         png_crc_finish(png_ptr, length);
+         return;
+      }
+   }
+#endif
+
    if (!(png_ptr->mode & PNG_HAVE_IHDR))
       png_error(png_ptr, "Missing IHDR before iTXt");
 
@@ -2239,6 +2364,23 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 
    png_debug(1, "in png_handle_unknown");
 
+#ifdef PNG_USER_LIMITS_SUPPORTED
+   if (png_ptr->user_chunk_cache_max != 0)
+   {
+      if (png_ptr->user_chunk_cache_max == 1)
+      {
+         png_crc_finish(png_ptr, length);
+         return;
+      }
+      if (--png_ptr->user_chunk_cache_max == 1)
+      {
+         png_warning(png_ptr, "No space in chunk cache for unknown chunk");
+         png_crc_finish(png_ptr, length);
+         return;
+      }
+   }
+#endif
+
    if (png_ptr->mode & PNG_HAVE_IDAT)
    {
 #ifdef PNG_USE_LOCAL_ARRAYS
@@ -2279,7 +2421,8 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
        png_memcpy((png_charp)png_ptr->unknown_chunk.name,
                   (png_charp)png_ptr->chunk_name,
                   png_sizeof(png_ptr->unknown_chunk.name));
-       png_ptr->unknown_chunk.name[png_sizeof(png_ptr->unknown_chunk.name)-1] = '\0';
+       png_ptr->unknown_chunk.name[png_sizeof(png_ptr->unknown_chunk.name)-1]
+           = '\0';
        png_ptr->unknown_chunk.size = (png_size_t)length;
        if (length == 0)
          png_ptr->unknown_chunk.data = NULL;
@@ -2322,7 +2465,7 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
    png_crc_finish(png_ptr, skip);
 
 #ifndef PNG_READ_USER_CHUNKS_SUPPORTED
-   info_ptr = info_ptr; /* Quiet compiler warnings about unused info_ptr */
+   PNG_UNUSED(info_ptr) /* Quiet compiler warnings about unused info_ptr */
 #endif
 }
 
@@ -2751,7 +2894,8 @@ png_do_read_interlace(png_structp png_ptr)
          default:
          {
             png_size_t pixel_bytes = (row_info->pixel_depth >> 3);
-            png_bytep sp = row + (png_size_t)(row_info->width - 1) * pixel_bytes;
+            png_bytep sp = row + (png_size_t)(row_info->width - 1)
+                * pixel_bytes;
             png_bytep dp = row + (png_size_t)(final_width - 1) * pixel_bytes;
 
             int jstop = png_pass_inc[pass];
@@ -2777,7 +2921,7 @@ png_do_read_interlace(png_structp png_ptr)
       row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, final_width);
    }
 #ifndef PNG_READ_PACKSWAP_SUPPORTED
-   transformations = transformations; /* Silence compiler warning */
+   PNG_UNUSED(transformations) /* Silence compiler warning */
 #endif
 }
 #endif /* PNG_READ_INTERLACING_SUPPORTED */
@@ -2946,9 +3090,6 @@ png_read_finish_row(png_structp png_ptr)
             png_pass_start[png_ptr->pass]) /
             png_pass_inc[png_ptr->pass];
 
-         png_ptr->irowbytes = PNG_ROWBYTES(png_ptr->pixel_depth,
-            png_ptr->iwidth) + 1;
-
          if (!(png_ptr->transformations & PNG_INTERLACE))
          {
             png_ptr->num_rows = (png_ptr->height +
@@ -3007,7 +3148,7 @@ png_read_finish_row(png_structp png_ptr)
          {
             if (!(png_ptr->zstream.avail_out) || png_ptr->zstream.avail_in ||
                png_ptr->idat_size)
-               png_warning(png_ptr, "Extra compressed data");
+               png_warning(png_ptr, "Extra compressed data.");
             png_ptr->mode |= PNG_AFTER_IDAT;
             png_ptr->flags |= PNG_FLAG_ZLIB_FINISHED;
             break;
@@ -3029,7 +3170,7 @@ png_read_finish_row(png_structp png_ptr)
    }
 
    if (png_ptr->idat_size || png_ptr->zstream.avail_in)
-      png_warning(png_ptr, "Extra compression data");
+      png_warning(png_ptr, "Extra compression data.");
 
    inflateReset(&png_ptr->zstream);
 
@@ -3075,16 +3216,12 @@ png_read_start_row(png_structp png_ptr)
          png_pass_inc[png_ptr->pass] - 1 -
          png_pass_start[png_ptr->pass]) /
          png_pass_inc[png_ptr->pass];
-
-         png_ptr->irowbytes =
-            PNG_ROWBYTES(png_ptr->pixel_depth, png_ptr->iwidth) + 1;
    }
    else
 #endif /* PNG_READ_INTERLACING_SUPPORTED */
    {
       png_ptr->num_rows = png_ptr->height;
       png_ptr->iwidth = png_ptr->width;
-      png_ptr->irowbytes = png_ptr->rowbytes + 1;
    }
    max_pixel_depth = png_ptr->pixel_depth;
 
@@ -3206,9 +3343,14 @@ defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
    {
      png_free(png_ptr, png_ptr->big_row_buf);
      if (png_ptr->interlaced)
-        png_ptr->big_row_buf = (png_bytep)png_calloc(png_ptr, row_bytes + 64);
+        png_ptr->big_row_buf = (png_bytep)png_calloc(png_ptr,
+            row_bytes + 64);
      else
-        png_ptr->big_row_buf = (png_bytep)png_malloc(png_ptr, row_bytes + 64);
+        png_ptr->big_row_buf = (png_bytep)png_malloc(png_ptr,
+            row_bytes + 64);
+     png_ptr->old_big_row_buf_size = row_bytes + 64;
+
+     /* Use 32 bytes of padding before and after row_buf. */
      png_ptr->row_buf = png_ptr->big_row_buf + 32;
      png_ptr->old_big_row_buf_size = row_bytes + 64;
    }
@@ -3236,7 +3378,8 @@ defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
    png_debug1(3, "iwidth = %lu,", png_ptr->iwidth);
    png_debug1(3, "num_rows = %lu,", png_ptr->num_rows);
    png_debug1(3, "rowbytes = %lu,", png_ptr->rowbytes);
-   png_debug1(3, "irowbytes = %lu", png_ptr->irowbytes);
+   png_debug1(3, "irowbytes = %lu",
+       PNG_ROWBYTES(png_ptr->pixel_depth, png_ptr->iwidth) + 1);
 
    png_ptr->flags |= PNG_FLAG_ROW_INIT;
 }

pngset.c

@@ -1,8 +1,8 @@
 
 /* pngset.c - storage of image information into info struct
  *
- * Last changed in libpng 1.2.41 [December 23, 2009]
- * Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ * Last changed in libpng 1.2.51 [February 6, 2014]
+ * Copyright (c) 1998-2014 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.)
  *
@@ -397,7 +397,7 @@ png_set_sCAL_s(png_structp png_ptr, png_infop info_ptr,
    if (info_ptr->scal_s_width == NULL)
    {
       png_warning(png_ptr,
-       "Memory allocation failed while processing sCAL.");
+         "Memory allocation failed while processing sCAL.");
       return;
    }
    png_memcpy(info_ptr->scal_s_width, swidth, (png_size_t)length);
@@ -411,7 +411,7 @@ png_set_sCAL_s(png_structp png_ptr, png_infop info_ptr,
       png_free (png_ptr, info_ptr->scal_s_width);
       info_ptr->scal_s_width = NULL;
       png_warning(png_ptr,
-       "Memory allocation failed while processing sCAL.");
+         "Memory allocation failed while processing sCAL.");
       return;
    }
    png_memcpy(info_ptr->scal_s_height, sheight, (png_size_t)length);
@@ -462,8 +462,7 @@ png_set_PLTE(png_structp png_ptr, png_infop info_ptr,
       }
    }
 
-   /*
-    * It may not actually be necessary to set png_ptr->palette here;
+   /* It may not actually be necessary to set png_ptr->palette here;
     * we do it for backward compatibility with the way the png_handle_tRNS
     * function used to do the allocation.
     */
@@ -534,8 +533,10 @@ png_set_sRGB_gAMA_and_cHRM(png_structp png_ptr, png_infop info_ptr,
 #ifdef PNG_FLOATING_POINT_SUPPORTED
    float white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y;
 #endif
+#ifdef PNG_FIXED_POINT_SUPPORTED
    png_fixed_point int_white_x, int_white_y, int_red_x, int_red_y, int_green_x,
       int_green_y, int_blue_x, int_blue_y;
+#endif
 #endif
    png_debug1(1, "in %s storage function", "sRGB_gAMA_and_cHRM");
 
@@ -556,6 +557,7 @@ png_set_sRGB_gAMA_and_cHRM(png_structp png_ptr, png_infop info_ptr,
 #endif
 
 #ifdef PNG_cHRM_SUPPORTED
+#  ifdef PNG_FIXED_POINT_SUPPORTED
    int_white_x = 31270L;
    int_white_y = 32900L;
    int_red_x   = 64000L;
@@ -564,8 +566,12 @@ png_set_sRGB_gAMA_and_cHRM(png_structp png_ptr, png_infop info_ptr,
    int_green_y = 60000L;
    int_blue_x  = 15000L;
    int_blue_y  =  6000L;
+   png_set_cHRM_fixed(png_ptr, info_ptr,
+       int_white_x, int_white_y, int_red_x, int_red_y, int_green_x,
+       int_green_y, int_blue_x, int_blue_y);
+#  endif
 
-#ifdef PNG_FLOATING_POINT_SUPPORTED
+#  ifdef PNG_FLOATING_POINT_SUPPORTED
    white_x = (float).3127;
    white_y = (float).3290;
    red_x   = (float).64;
@@ -574,17 +580,9 @@ png_set_sRGB_gAMA_and_cHRM(png_structp png_ptr, png_infop info_ptr,
    green_y = (float).60;
    blue_x  = (float).15;
    blue_y  = (float).06;
-#endif
-
-#ifdef PNG_FIXED_POINT_SUPPORTED
-   png_set_cHRM_fixed(png_ptr, info_ptr,
-       int_white_x, int_white_y, int_red_x, int_red_y, int_green_x,
-       int_green_y, int_blue_x, int_blue_y);
-#endif
-#ifdef PNG_FLOATING_POINT_SUPPORTED
    png_set_cHRM(png_ptr, info_ptr,
        white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y);
-#endif
+#  endif
 #endif /* cHRM */
 }
 #endif /* sRGB */
@@ -609,7 +607,7 @@ png_set_iCCP(png_structp png_ptr, png_infop info_ptr,
    new_iccp_name = (png_charp)png_malloc_warn(png_ptr, length);
    if (new_iccp_name == NULL)
    {
-      png_warning(png_ptr, "Insufficient memory to process iCCP chunk.");
+        png_warning(png_ptr, "Insufficient memory to process iCCP chunk.");
       return;
    }
    png_memcpy(new_iccp_name, name, length);
@@ -618,7 +616,7 @@ png_set_iCCP(png_structp png_ptr, png_infop info_ptr,
    {
       png_free (png_ptr, new_iccp_name);
       png_warning(png_ptr,
-      "Insufficient memory to process iCCP profile.");
+          "Insufficient memory to process iCCP profile.");
       return;
    }
    png_memcpy(new_iccp_profile, profile, (png_size_t)proflen);
@@ -629,7 +627,8 @@ png_set_iCCP(png_structp png_ptr, png_infop info_ptr,
    info_ptr->iccp_name = new_iccp_name;
    info_ptr->iccp_profile = new_iccp_profile;
    /* Compression is always zero but is here so the API and info structure
-    * does not have to change if we introduce multiple compression types */
+    * does not have to change if we introduce multiple compression types
+    */
    info_ptr->iccp_compression = (png_byte)compression_type;
 #ifdef PNG_FREE_ME_SUPPORTED
    info_ptr->free_me |= PNG_FREE_ICCP;
@@ -667,22 +666,26 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_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_uint_32)(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);
       }
@@ -693,7 +696,12 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
          info_ptr->text = (png_textp)png_malloc_warn(png_ptr,
             (png_uint_32)(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);
+         }
 #ifdef PNG_FREE_ME_SUPPORTED
          info_ptr->free_me |= PNG_FREE_TEXT;
 #endif
@@ -701,6 +709,7 @@ png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
       png_debug1(3, "allocated %d entries for info_ptr->text",
          info_ptr->max_text);
    }
+
    for (i = 0; i < num_text; i++)
    {
       png_size_t text_length, key_len;
@@ -840,6 +849,12 @@ 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 != NULL)
    {
        /* It may not actually be necessary to set png_ptr->trans here;
@@ -912,11 +927,11 @@ png_set_sPLT(png_structp png_ptr,
    if (np == NULL)
    {
       png_warning(png_ptr, "No memory for sPLT palettes.");
-     return;
+      return;
    }
 
    png_memcpy(np, info_ptr->splt_palettes,
-          info_ptr->splt_palettes_num * png_sizeof(png_sPLT_t));
+       info_ptr->splt_palettes_num * png_sizeof(png_sPLT_t));
    png_free(png_ptr, info_ptr->splt_palettes);
    info_ptr->splt_palettes=NULL;
 
@@ -927,7 +942,7 @@ png_set_sPLT(png_structp png_ptr,
       png_uint_32 length;
 
       length = png_strlen(from->name) + 1;
-        to->name = (png_charp)png_malloc_warn(png_ptr, length);
+      to->name = (png_charp)png_malloc_warn(png_ptr, length);
       if (to->name == NULL)
       {
          png_warning(png_ptr,
@@ -936,7 +951,7 @@ png_set_sPLT(png_structp png_ptr,
       }
       png_memcpy(to->name, from->name, length);
       to->entries = (png_sPLT_entryp)png_malloc_warn(png_ptr,
-            (png_uint_32)(from->nentries * png_sizeof(png_sPLT_entry)));
+          (png_uint_32)(from->nentries * png_sizeof(png_sPLT_entry)));
       if (to->entries == NULL)
       {
          png_warning(png_ptr,
@@ -960,7 +975,7 @@ png_set_sPLT(png_structp png_ptr,
 }
 #endif /* PNG_sPLT_SUPPORTED */
 
-#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
 void PNGAPI
 png_set_unknown_chunks(png_structp png_ptr,
    png_infop info_ptr, png_unknown_chunkp unknowns, int num_unknowns)
@@ -977,23 +992,22 @@ png_set_unknown_chunks(png_structp png_ptr,
    if (np == NULL)
    {
       png_warning(png_ptr,
-         "Out of memory while processing unknown chunk.");
+          "Out of memory while processing unknown chunk.");
       return;
    }
 
    png_memcpy(np, info_ptr->unknown_chunks,
-          info_ptr->unknown_chunks_num * png_sizeof(png_unknown_chunk));
+       info_ptr->unknown_chunks_num * png_sizeof(png_unknown_chunk));
    png_free(png_ptr, info_ptr->unknown_chunks);
-   info_ptr->unknown_chunks=NULL;
+   info_ptr->unknown_chunks = NULL;
 
    for (i = 0; i < num_unknowns; i++)
    {
       png_unknown_chunkp to = np + info_ptr->unknown_chunks_num + i;
       png_unknown_chunkp from = unknowns + i;
 
-      png_memcpy((png_charp)to->name,
-                 (png_charp)from->name,
-                 png_sizeof(from->name));
+      png_memcpy((png_charp)to->name, (png_charp)from->name,
+          png_sizeof(from->name));
       to->name[png_sizeof(to->name)-1] = '\0';
       to->size = from->size;
       /* Note our location in the read or write sequence */
@@ -1027,7 +1041,7 @@ png_set_unknown_chunk_location(png_structp png_ptr, png_infop info_ptr,
    int chunk, int location)
 {
    if (png_ptr != NULL && info_ptr != NULL && chunk >= 0 && chunk <
-         (int)info_ptr->unknown_chunks_num)
+       (int)info_ptr->unknown_chunks_num)
       info_ptr->unknown_chunks[chunk].location = (png_byte)location;
 }
 #endif
@@ -1066,7 +1080,7 @@ png_permit_mng_features (png_structp png_ptr, png_uint_32 mng_features)
 }
 #endif
 
-#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
 void PNGAPI
 png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_bytep
    chunk_list, int num_chunks)
@@ -1093,16 +1107,16 @@ png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_bytep
    old_num_chunks = png_ptr->num_chunk_list;
    new_list=(png_bytep)png_malloc(png_ptr,
       (png_uint_32)
-      (5*(num_chunks + old_num_chunks)));
+       (5*(num_chunks + old_num_chunks)));
    if (png_ptr->chunk_list != NULL)
    {
       png_memcpy(new_list, png_ptr->chunk_list,
-         (png_size_t)(5*old_num_chunks));
+          (png_size_t)(5*old_num_chunks));
       png_free(png_ptr, png_ptr->chunk_list);
       png_ptr->chunk_list=NULL;
    }
    png_memcpy(new_list + 5*old_num_chunks, chunk_list,
-      (png_size_t)(5*num_chunks));
+       (png_size_t)(5*num_chunks));
    for (p = new_list + 5*old_num_chunks + 4, i = 0; i<num_chunks; i++, p += 5)
       *p=(png_byte)keep;
    png_ptr->num_chunk_list = old_num_chunks + num_chunks;
@@ -1145,7 +1159,6 @@ png_set_rows(png_structp png_ptr, png_infop info_ptr, png_bytepp row_pointers)
 }
 #endif
 
-#ifdef PNG_WRITE_SUPPORTED
 void PNGAPI
 png_set_compression_buffer_size(png_structp png_ptr,
     png_uint_32 size)
@@ -1158,7 +1171,6 @@ png_set_compression_buffer_size(png_structp png_ptr,
     png_ptr->zstream.next_out = png_ptr->zbuf;
     png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
 }
-#endif
 
 void PNGAPI
 png_set_invalid(png_structp png_ptr, png_infop info_ptr, int mask)
@@ -1177,7 +1189,7 @@ png_set_asm_flags (png_structp png_ptr, png_uint_32 asm_flags)
 /* Obsolete as of libpng-1.2.20 and will be removed from libpng-1.4.0 */
     if (png_ptr != NULL)
     png_ptr->asm_flags = 0;
-    asm_flags = asm_flags; /* Quiet the compiler */
+    PNG_UNUSED(asm_flags) /* Quiet the compiler */
 }
 
 /* This function was added to libpng 1.2.0 */
@@ -1190,8 +1202,8 @@ png_set_mmx_thresholds (png_structp png_ptr,
     if (png_ptr == NULL)
        return;
     /* Quiet the compiler */
-    mmx_bitdepth_threshold = mmx_bitdepth_threshold;
-    mmx_rowbytes_threshold = mmx_rowbytes_threshold;
+    PNG_UNUSED(mmx_bitdepth_threshold)
+    PNG_UNUSED(mmx_rowbytes_threshold)
 }
 #endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */
 

pngtest.c

@@ -1,8 +1,8 @@
 
 /* pngtest.c - a simple test program to test libpng
  *
- * Last changed in libpng 1.2.41 [December 23, 2009]
- * Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ * Last changed in libpng 1.2.51 [February 6, 2014]
+ * Copyright (c) 1998-2014 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.)
  *
@@ -312,12 +312,17 @@ static int wrote_question = 0;
 static void
 pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
 {
-   png_size_t check;
+   png_size_t check = 0;
+   png_voidp io_ptr;
 
    /* fread() returns 0 on error, so it is OK to store this in a png_size_t
     * instead of an int, which is what fread() actually returns.
     */
-   READFILE((png_FILE_p)png_ptr->io_ptr, data, length, check);
+   io_ptr = png_get_io_ptr(png_ptr);
+   if (io_ptr != NULL)
+   {
+      READFILE((png_FILE_p)io_ptr, data, length, check);
+   }
 
    if (check != length)
    {
@@ -377,7 +382,7 @@ static void
 pngtest_flush(png_structp png_ptr)
 {
    /* Do nothing; fflush() is said to be just a waste of energy. */
-   png_ptr = png_ptr;  /* Stifle compiler warning */
+   PNG_UNUSED(png_ptr)  /* Stifle compiler warning */
 }
 #endif
 
@@ -457,9 +462,12 @@ static void
 pngtest_warning(png_structp png_ptr, png_const_charp message)
 {
    PNG_CONST char *name = "UNKNOWN (ERROR!)";
-   if (png_ptr != NULL && png_ptr->error_ptr != NULL)
-      name = png_ptr->error_ptr;
-   fprintf(STDERR, "%s: libpng warning: %s\n", name, message);
+   char *test;
+   test = png_get_error_ptr(png_ptr);
+   if (test == NULL)
+     fprintf(STDERR, "%s: libpng warning: %s\n", name, message);
+   else
+     fprintf(STDERR, "%s: libpng warning: %s\n", test, message);
 }
 
 /* This is the default error handling function.  Note that replacements for
@@ -711,7 +719,8 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
 
 #ifdef _WIN32_WCE
    MultiByteToWideChar(CP_ACP, 0, inname, -1, path, MAX_PATH);
-   if ((fpin = CreateFile(path, GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL)) == INVALID_HANDLE_VALUE)
+   if ((fpin = CreateFile(path, GENERIC_READ, 0, NULL, OPEN_EXISTING, 0,
+       NULL)) == INVALID_HANDLE_VALUE)
 #else
    if ((fpin = fopen(inname, "rb")) == NULL)
 #endif
@@ -722,7 +731,8 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
 
 #ifdef _WIN32_WCE
    MultiByteToWideChar(CP_ACP, 0, outname, -1, path, MAX_PATH);
-   if ((fpout = CreateFile(path, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, 0, NULL)) == INVALID_HANDLE_VALUE)
+   if ((fpout = CreateFile(path, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS,
+       0, NULL)) == INVALID_HANDLE_VALUE)
 #else
    if ((fpout = fopen(outname, "wb")) == NULL)
 #endif
@@ -912,8 +922,8 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
    {
       png_fixed_point white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
          blue_y;
-      if (png_get_cHRM_fixed(read_ptr, read_info_ptr, &white_x, &white_y, &red_x,
-         &red_y, &green_x, &green_y, &blue_x, &blue_y))
+      if (png_get_cHRM_fixed(read_ptr, read_info_ptr, &white_x, &white_y,
+         &red_x, &red_y, &green_x, &green_y, &blue_x, &blue_y))
       {
          png_set_cHRM_fixed(write_ptr, write_info_ptr, white_x, white_y, red_x,
             red_y, green_x, green_y, blue_x, blue_y);
@@ -1065,7 +1075,8 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
       if (png_get_sCAL_s(read_ptr, read_info_ptr, &unit, &scal_width,
           &scal_height))
       {
-         png_set_sCAL_s(write_ptr, write_info_ptr, unit, scal_width, scal_height);
+         png_set_sCAL_s(write_ptr, write_info_ptr, unit, scal_width,
+             scal_height);
       }
    }
 #endif
@@ -1349,7 +1360,8 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
    png_debug(0, "Opening files for comparison");
 #ifdef _WIN32_WCE
    MultiByteToWideChar(CP_ACP, 0, inname, -1, path, MAX_PATH);
-   if ((fpin = CreateFile(path, GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL)) == INVALID_HANDLE_VALUE)
+   if ((fpin = CreateFile(path, GENERIC_READ, 0, NULL, OPEN_EXISTING,
+       0, NULL)) == INVALID_HANDLE_VALUE)
 #else
    if ((fpin = fopen(inname, "rb")) == NULL)
 #endif
@@ -1360,7 +1372,8 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
 
 #ifdef _WIN32_WCE
    MultiByteToWideChar(CP_ACP, 0, outname, -1, path, MAX_PATH);
-   if ((fpout = CreateFile(path, GENERIC_READ, 0, NULL, OPEN_EXISTING, 0, NULL)) == INVALID_HANDLE_VALUE)
+   if ((fpout = CreateFile(path, GENERIC_READ, 0, NULL, OPEN_EXISTING,
+       0, NULL)) == INVALID_HANDLE_VALUE)
 #else
    if ((fpout = fopen(outname, "rb")) == NULL)
 #endif
@@ -1528,14 +1541,14 @@ main(int argc, char *argv[])
 #endif
       for (i=2; i<argc; ++i)
       {
-#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
-         int k;
-#endif
          int kerror;
          fprintf(STDERR, "\n Testing %s:", argv[i]);
          kerror = test_one_file(argv[i], outname);
          if (kerror == 0)
          {
+#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
+            int k;
+#endif
 #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
             fprintf(STDERR, "\n PASS (%lu zero samples)\n",
                (unsigned long)zero_samples);
@@ -1621,8 +1634,7 @@ main(int argc, char *argv[])
                 for (k = 0; k<256; k++)
                    if (filters_used[k])
                       fprintf(STDERR, " Filter %d was used %lu times\n",
-                         k,
-                         (unsigned long)filters_used[k]);
+                         k, (unsigned long)filters_used[k]);
 #endif
 #ifdef PNG_TIME_RFC1123_SUPPORTED
              if (tIME_chunk_present != 0)
@@ -1690,4 +1702,4 @@ main(int argc, char *argv[])
 }
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_0_52rc01 your_png_h_is_not_version_1_0_52rc01;
+typedef version_1_2_51 your_png_h_is_not_version_1_2_51;

pngtrans.c

@@ -1,7 +1,7 @@
 
 /* pngtrans.c - transforms the data in a row (used by both readers and writers)
  *
- * Last changed in libpng 1.2.41 [December 23, 2009]
+ * Last changed in libpng 1.2.41 [December 3, 2009]
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)

pngvcrd.c

@@ -1 +1,12 @@
-/* pnggvrd.c was removed from libpng-1.2.20. */
+/* pngvcrd.c
+ *
+ * Last changed in libpng 1.2.48 [March 8, 2012]
+ * Copyright (c) 1998-2012 Glenn Randers-Pehrson
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ *
+ * This nearly empty file is for use by configure's compilation test. The
+ * remainder of the file  was removed from libpng-1.2.20.
+ */

pngwio.c

@@ -1,7 +1,7 @@
 
 /* pngwio.c - functions for data output
  *
- * Last changed in libpng 1.2.41 [December 23, 2009]
+ * Last changed in libpng 1.2.41 [December 3, 2009]
  * Copyright (c) 1998-2009 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -174,7 +174,7 @@ png_default_flush(png_structp png_ptr)
  *                 arguments a pointer to a png_struct.  After a call to
  *                 the flush function, there should be no data in any buffers
  *                 or pending transmission.  If the output method doesn't do
- *                 any buffering of ouput, a function prototype must still be
+ *                 any buffering of output, a function prototype must still be
  *                 supplied although it doesn't have to do anything.  If
  *                 PNG_WRITE_FLUSH_SUPPORTED is not defined at libpng compile
  *                 time, output_flush_fn will be ignored, although it must be

pngwrite.c

@@ -1,8 +1,8 @@
 
 /* pngwrite.c - general routines to write a PNG file
  *
- * Last changed in libpng 1.2.41 [December 23, 2009]
- * Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ * Last changed in libpng 1.2.51 [February 6, 2014]
+ * Copyright (c) 1998-2014 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
@@ -38,7 +38,8 @@ png_write_info_before_PLTE(png_structp png_ptr, png_infop info_ptr)
    /* Write PNG signature */
    png_write_sig(png_ptr);
 #ifdef PNG_MNG_FEATURES_SUPPORTED
-   if ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE)&&(png_ptr->mng_features_permitted))
+   if ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) && \
+      (png_ptr->mng_features_permitted))
    {
       png_warning(png_ptr, "MNG features are not allowed in a PNG datastream");
       png_ptr->mng_features_permitted = 0;
@@ -294,6 +295,7 @@ png_write_info(png_structp png_ptr, png_infop info_ptr)
          if (keep != PNG_HANDLE_CHUNK_NEVER &&
             up->location && (up->location & PNG_HAVE_PLTE) &&
             !(up->location & PNG_HAVE_IDAT) &&
+            !(up->location & PNG_AFTER_IDAT) &&
             ((up->name[3] & 0x20) || keep == PNG_HANDLE_CHUNK_ALWAYS ||
             (png_ptr->flags & PNG_FLAG_KEEP_UNSAFE_CHUNKS)))
          {
@@ -415,12 +417,12 @@ png_write_end(png_structp png_ptr, png_infop info_ptr)
     * do not set png_ptr->output_flush_fn to crash.  If your application
     * experiences a problem, please try building libpng with
     * PNG_WRITE_FLUSH_AFTER_IEND_SUPPORTED defined, and report the event to
-    * png-mng-implement at lists.sf.net .  This kludge will be removed
-    * from libpng-1.4.0.
+    * png-mng-implement at lists.sf.net .
     */
-#if defined(PNG_WRITE_FLUSH_SUPPORTED) && \
-    defined(PNG_WRITE_FLUSH_AFTER_IEND_SUPPORTED)
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
+#  ifdef PNG_WRITE_FLUSH_AFTER_IEND_SUPPORTED
    png_flush(png_ptr);
+#  endif
 #endif
 }
 
@@ -639,7 +641,8 @@ png_write_init_2(png_structp png_ptr, png_const_charp user_png_ver,
       png_ptr->flags = 0;
 #endif
       png_error(png_ptr,
-      "The png struct allocated by the application for writing is too small.");
+      "The png struct allocated by the application for writing is"
+      " too small.");
    }
    if (png_sizeof(png_info) > png_info_size)
    {
@@ -648,7 +651,8 @@ png_write_init_2(png_structp png_ptr, png_const_charp user_png_ver,
       png_ptr->flags = 0;
 #endif
       png_error(png_ptr,
-      "The info struct allocated by the application for writing is too small.");
+      "The info struct allocated by the application for writing is"
+      " too small.");
    }
    png_write_init_3(&png_ptr, user_png_ver, png_struct_size);
 }
@@ -803,15 +807,19 @@ png_write_row(png_structp png_ptr, png_bytep row)
       /* Check for transforms that have been set but were defined out */
 #if !defined(PNG_WRITE_INVERT_SUPPORTED) && defined(PNG_READ_INVERT_SUPPORTED)
       if (png_ptr->transformations & PNG_INVERT_MONO)
-         png_warning(png_ptr, "PNG_WRITE_INVERT_SUPPORTED is not defined.");
+         png_warning(png_ptr,
+             "PNG_WRITE_INVERT_SUPPORTED is not defined.");
 #endif
 #if !defined(PNG_WRITE_FILLER_SUPPORTED) && defined(PNG_READ_FILLER_SUPPORTED)
       if (png_ptr->transformations & PNG_FILLER)
-         png_warning(png_ptr, "PNG_WRITE_FILLER_SUPPORTED is not defined.");
+         png_warning(png_ptr,
+             "PNG_WRITE_FILLER_SUPPORTED is not defined.");
 #endif
-#if !defined(PNG_WRITE_PACKSWAP_SUPPORTED) && defined(PNG_READ_PACKSWAP_SUPPORTED)
+#if !defined(PNG_WRITE_PACKSWAP_SUPPORTED) && \
+    defined(PNG_READ_PACKSWAP_SUPPORTED)
       if (png_ptr->transformations & PNG_PACKSWAP)
-         png_warning(png_ptr, "PNG_WRITE_PACKSWAP_SUPPORTED is not defined.");
+         png_warning(png_ptr,
+             "PNG_WRITE_PACKSWAP_SUPPORTED is not defined.");
 #endif
 #if !defined(PNG_WRITE_PACK_SUPPORTED) && defined(PNG_READ_PACK_SUPPORTED)
       if (png_ptr->transformations & PNG_PACK)
@@ -1066,7 +1074,7 @@ png_destroy_write_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr)
       {
         png_free_data(png_ptr, info_ptr, PNG_FREE_ALL, -1);
 
-#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
         if (png_ptr->num_chunk_list)
         {
            png_free(png_ptr, png_ptr->chunk_list);
@@ -1578,8 +1586,8 @@ png_write_png(png_structp png_ptr, png_infop info_ptr,
    /* It is REQUIRED to call this to finish writing the rest of the file */
    png_write_end(png_ptr, info_ptr);
 
-   transforms = transforms; /* Quiet compiler warnings */
-   params = params;
+   PNG_UNUSED(transforms) /* Quiet compiler warnings */
+   PNG_UNUSED(params)
 }
 #endif
 #endif /* PNG_WRITE_SUPPORTED */

pngwtran.c

@@ -1,8 +1,8 @@
 
 /* pngwtran.c - transforms the data in a row for PNG writers
  *
- * Last changed in libpng 1.2.41 [December 23, 2009]
- * Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ * Last changed in libpng 1.2.43 [February 25, 2010]
+ * Copyright (c) 1998-2010 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.)
  *
@@ -30,7 +30,8 @@ png_do_write_transformations(png_structp png_ptr)
 #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
    if (png_ptr->transformations & PNG_USER_TRANSFORM)
       if (png_ptr->write_user_transform_fn != NULL)
-        (*(png_ptr->write_user_transform_fn)) /* User write transform function */
+        (*(png_ptr->write_user_transform_fn)) /* User write transform
+                                                 function */
           (png_ptr,                    /* png_ptr */
            &(png_ptr->row_info),       /* row_info:     */
              /*  png_uint_32 width;          width of row */

pngwutil.c

@@ -1,8 +1,8 @@
 
 /* pngwutil.c - utilities to write a PNG file
  *
- * Last changed in libpng 1.2.41 [December 23, 2009]
- * Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ * Last changed in libpng 1.2.43 [February 25, 2010]
+ * Copyright (c) 1998-2010 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.)
  *
@@ -59,7 +59,7 @@ png_save_uint_16(png_bytep buf, unsigned int i)
  * we should call png_set_sig_bytes() to tell libpng how many of the
  * bytes have already been written.
  */
-void PNGAPI
+void /* PRIVATE */
 png_write_sig(png_structp png_ptr)
 {
    png_byte png_signature[8] = {137, 80, 78, 71, 13, 10, 26, 10};
@@ -413,7 +413,8 @@ png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height,
             case 4:
             case 8:
             case 16: png_ptr->channels = 1; break;
-            default: png_error(png_ptr, "Invalid bit depth for grayscale image");
+            default: png_error(png_ptr,
+                         "Invalid bit depth for grayscale image");
          }
          break;
       case PNG_COLOR_TYPE_RGB:
@@ -618,7 +619,9 @@ png_write_PLTE(png_structp png_ptr, png_colorp palette, png_uint_32 num_pal)
       png_write_chunk_data(png_ptr, buf, (png_size_t)3);
    }
 #else
-   /* This is a little slower but some buggy compilers need to do this instead */
+   /* This is a little slower but some buggy compilers need to do this
+    * instead
+    */
    pal_ptr=palette;
    for (i = 0; i < num_pal; i++)
    {
@@ -1640,7 +1643,8 @@ png_write_sCAL(png_structp png_ptr, int unit, double width, double height)
       size_t wc_len;
       swprintf(wc_buf, TEXT("%12.12e"), width);
       wc_len = wcslen(wc_buf);
-      WideCharToMultiByte(CP_ACP, 0, wc_buf, -1, buf + 1, wc_len, NULL, NULL);
+      WideCharToMultiByte(CP_ACP, 0, wc_buf, -1, buf + 1, wc_len, NULL,
+          NULL);
       total_len = wc_len + 2;
       swprintf(wc_buf, TEXT("%12.12e"), height);
       wc_len = wcslen(wc_buf);

projects/visualc6/README.txt

@@ -4,13 +4,11 @@ Copyright (C) 2000-2004 Simon-Pierre Cadieux.
 Copyright (C) 2004 Cosmin Truta.
 For conditions of distribution and use, see copyright notice in png.h
 
-
 Assumptions:
 * The libpng source files are in ..\..
 * The zlib source files are in ..\..\..\zlib
 * The zlib project files are in ..\..\..\zlib\projects\visualc6
 
-
 To use:
 
 1) On the main menu, select "File | Open Workspace".
@@ -28,20 +26,18 @@ To use:
 5) If you built the sample program (pngtest),
    select "Build | Execute ... (Ctrl+F5)".
 
-
 This project builds the libpng binaries as follows:
 
-* Win32_DLL_Release\libpng10.dll      DLL build
-* Win32_DLL_Debug\libpng10d.dll       DLL build (debug version)
-* Win32_DLL_ASM_Release\libpng10.dll  DLL build using ASM code
-* Win32_DLL_ASM_Debug\libpng10d.dll   DLL build using ASM (debug version)
-* Win32_DLL_VB\libpng10vb.dll         DLL build for Visual Basic, using stdcall
+* Win32_DLL_Release\libpng13.dll      DLL build
+* Win32_DLL_Debug\libpng13d.dll       DLL build (debug version)
+* Win32_DLL_ASM_Release\libpng13.dll  DLL build using ASM code
+* Win32_DLL_ASM_Debug\libpng13d.dll   DLL build using ASM (debug version)
+* Win32_DLL_VB\libpng13vb.dll         DLL build for Visual Basic, using stdcall
 * Win32_LIB_Release\libpng.lib        static build
 * Win32_LIB_Debug\libpngd.lib         static build (debug version)
 * Win32_LIB_ASM_Release\libpng.lib    static build using ASM code
 * Win32_LIB_ASM_Debug\libpngd.lib     static build using ASM (debug version)
 
-
 Notes:
 
 If you change anything in the source files, or select different compiler

projects/visualc6/libpng.dsp

@@ -63,7 +63,7 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 /nologo /dll /machine:I386
-# ADD LINK32 zlib1.lib /nologo /dll /machine:I386 /out:"Win32_DLL_Release\libpng10.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_Release"
+# ADD LINK32 zlib1.lib /nologo /dll /machine:I386 /out:"Win32_DLL_Release\libpng13.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_Release"
 
 !ELSEIF  "$(CFG)" == "libpng - Win32 DLL Debug"
 
@@ -94,7 +94,7 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 /nologo /dll /debug /machine:I386 /pdbtype:sept
-# ADD LINK32 zlib1d.lib /nologo /dll /debug /machine:I386 /out:"Win32_DLL_Debug\libpng10d.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_Debug"
+# ADD LINK32 zlib1d.lib /nologo /dll /debug /machine:I386 /out:"Win32_DLL_Debug\libpng13d.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_Debug"
 
 !ELSEIF  "$(CFG)" == "libpng - Win32 DLL ASM Release"
 
@@ -125,7 +125,7 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 /nologo /dll /machine:I386
-# ADD LINK32 zlib1.lib /nologo /dll /machine:I386 /out:"Win32_DLL_ASM_Release\libpng10.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_ASM_Release"
+# ADD LINK32 zlib1.lib /nologo /dll /machine:I386 /out:"Win32_DLL_ASM_Release\libpng13.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_ASM_Release"
 
 !ELSEIF  "$(CFG)" == "libpng - Win32 DLL ASM Debug"
 
@@ -156,7 +156,7 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 /nologo /dll /debug /machine:I386 /pdbtype:sept
-# ADD LINK32 zlib1d.lib /nologo /dll /debug /machine:I386 /out:"Win32_DLL_ASM_Debug\libpng10d.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_ASM_Debug"
+# ADD LINK32 zlib1d.lib /nologo /dll /debug /machine:I386 /out:"Win32_DLL_ASM_Debug\libpng13d.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_ASM_Debug"
 
 !ELSEIF  "$(CFG)" == "libpng - Win32 DLL VB"
 
@@ -187,10 +187,10 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 /nologo /dll /machine:I386
-# ADD LINK32 zlib1.lib /nologo /dll /machine:I386 /out:"Win32_DLL_VB\libpng10vb.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_Release"
+# ADD LINK32 zlib1.lib /nologo /dll /machine:I386 /out:"Win32_DLL_VB\libpng13vb.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_Release"
 # Begin Special Build Tool
 OutDir=.\Win32_DLL_VB
-TargetName=libpng10vb
+TargetName=libpng13vb
 SOURCE="$(InputPath)"
 PostBuild_Cmds=echo    Deleting $(targetname) import library and export file (Not required for VB projects)	del $(outdir)\$(targetname).lib	del $(outdir)\$(targetname).exp
 # End Special Build Tool

projects/visualc6/pngtest.dsp

@@ -58,7 +58,7 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 /nologo /subsystem:console /machine:I386
-# ADD LINK32 Win32_DLL_Release\libpng10.lib ..\..\..\zlib\projects\visualc6\Win32_DLL_Release\zlib1.lib /nologo /subsystem:console /machine:I386
+# ADD LINK32 Win32_DLL_Release\libpng13.lib ..\..\..\zlib\projects\visualc6\Win32_DLL_Release\zlib1.lib /nologo /subsystem:console /machine:I386
 # Begin Special Build Tool
 OutDir=.\Win32_DLL_Release
 SOURCE="$(InputPath)"
@@ -90,7 +90,7 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
-# ADD LINK32 Win32_DLL_Debug\libpng10d.lib ..\..\..\zlib\projects\visualc6\Win32_DLL_Debug\zlib1d.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
+# ADD LINK32 Win32_DLL_Debug\libpng13d.lib ..\..\..\zlib\projects\visualc6\Win32_DLL_Debug\zlib1d.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
 # Begin Special Build Tool
 OutDir=.\Win32_DLL_Debug
 SOURCE="$(InputPath)"
@@ -122,7 +122,7 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 /nologo /subsystem:console /machine:I386
-# ADD LINK32 Win32_DLL_ASM_Release\libpng10.lib ..\..\..\zlib\projects\visualc6\Win32_DLL_ASM_Release\zlib1.lib /nologo /subsystem:console /machine:I386
+# ADD LINK32 Win32_DLL_ASM_Release\libpng13.lib ..\..\..\zlib\projects\visualc6\Win32_DLL_ASM_Release\zlib1.lib /nologo /subsystem:console /machine:I386
 # Begin Special Build Tool
 OutDir=.\Win32_DLL_ASM_Release
 SOURCE="$(InputPath)"
@@ -154,7 +154,7 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
-# ADD LINK32 Win32_DLL_ASM_Debug\libpng10d.lib ..\..\..\zlib\projects\visualc6\Win32_DLL_ASM_Debug\zlib1d.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
+# ADD LINK32 Win32_DLL_ASM_Debug\libpng13d.lib ..\..\..\zlib\projects\visualc6\Win32_DLL_ASM_Debug\zlib1d.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
 # Begin Special Build Tool
 OutDir=.\Win32_DLL_ASM_Debug
 SOURCE="$(InputPath)"

projects/visualc71/README.txt

@@ -32,11 +32,11 @@ To use:
 
 This project builds the libpng binaries as follows:
 
-* Win32_DLL_Release\libpng10.dll      DLL build
-* Win32_DLL_Debug\libpng10d.dll       DLL build (debug version)
-* Win32_DLL_ASM_Release\libpng10.dll  DLL build using ASM code
-* Win32_DLL_ASM_Debug\libpng10d.dll   DLL build using ASM (debug version)
-* Win32_DLL_VB\libpng10vb.dll         DLL build for Visual Basic, using stdcall
+* Win32_DLL_Release\libpng13.dll      DLL build
+* Win32_DLL_Debug\libpng13d.dll       DLL build (debug version)
+* Win32_DLL_ASM_Release\libpng13.dll  DLL build using ASM code
+* Win32_DLL_ASM_Debug\libpng13d.dll   DLL build using ASM (debug version)
+* Win32_DLL_VB\libpng13vb.dll         DLL build for Visual Basic, using stdcall
 * Win32_LIB_Release\libpng.lib        static build
 * Win32_LIB_Debug\libpngd.lib         static build (debug version)
 * Win32_LIB_ASM_Release\libpng.lib    static build using ASM code

projects/visualc71/README_zlib.txt

@@ -8,7 +8,6 @@ Copyright (C) 2004 Simon-Pierre Cadieux.
 Copyright (C) 2004 Cosmin Truta.
 For conditions of distribution and use, see copyright notice in zlib.h.
 
-
 To use:
 
 1) On the main menu, select "File | Open Solution".

projects/visualc71/libpng.vcproj

@@ -30,7 +30,7 @@
 				Name="VCCustomBuildTool"/>
 			<Tool
 				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/libpng10.dll"
+				OutputFile="$(OutDir)/libpng13.dll"
 				LinkIncremental="1"
 				ModuleDefinitionFile="..\..\scripts\pngw32.def"/>
 			<Tool
@@ -78,7 +78,7 @@
 				Name="VCCustomBuildTool"/>
 			<Tool
 				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/libpng10d.dll"
+				OutputFile="$(OutDir)/libpng13d.dll"
 				ModuleDefinitionFile="..\..\scripts\pngw32.def"
 				GenerateDebugInformation="TRUE"/>
 			<Tool
@@ -126,7 +126,7 @@
 				Name="VCCustomBuildTool"/>
 			<Tool
 				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/libpng10.dll"
+				OutputFile="$(OutDir)/libpng13.dll"
 				LinkIncremental="1"
 				ModuleDefinitionFile="..\..\scripts\pngw32.def"/>
 			<Tool
@@ -175,7 +175,7 @@
 				Name="VCCustomBuildTool"/>
 			<Tool
 				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/libpng10d.dll"
+				OutputFile="$(OutDir)/libpng13d.dll"
 				ModuleDefinitionFile="..\..\scripts\pngw32.def"
 				GenerateDebugInformation="TRUE"/>
 			<Tool
@@ -224,7 +224,7 @@
 				Name="VCCustomBuildTool"/>
 			<Tool
 				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/libpng10vb.dll"
+				OutputFile="$(OutDir)/libpng13vb.dll"
 				LinkIncremental="1"/>
 			<Tool
 				Name="VCMIDLTool"/>

projects/visualc71/pngtest.vcproj

@@ -226,7 +226,7 @@ $(TargetPath) ..\..\pngtest.png $(IntDir)\pngout.png"
 				Name="VCLinkerTool"
 				OutputFile="$(OutDir)/pngtest.exe"
 				LinkIncremental="1"
-				IgnoreDefaultLibraryNames="$(IntDir)\libpng10vb.lib"
+				IgnoreDefaultLibraryNames="$(IntDir)\libpng13vb.lib"
 				SubSystem="1"
 				TargetMachine="1"/>
 			<Tool

projects/wince.txt

@@ -1,6 +1,6 @@
 A set of project files is available for WinCE.  Get
-libpng-1.0.52rc01-project-wince.zip from a libpng distribution
+libpng-1.2.51-project-wince.zip from a libpng distribution
 site such as http://libpng.sourceforge.net/index.html
 
 Put the zip file in this directory (projects) and then run
-"unzip -a libpng-1.0.52rc01-project-wince.zip"
+"unzip -a libpng-1.2.51-project-wince.zip"

projects/xcode/Info.plist

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDevelopmentRegion</key>
+	<string>English</string>
+	<key>CFBundleExecutable</key>
+	<string>libpng</string>
+	<key>CFBundleIconFile</key>
+	<string></string>
+	<key>CFBundleIdentifier</key>
+	<string>com.apple.carbonframeworktemplate</string>
+	<key>CFBundleInfoDictionaryVersion</key>
+	<string>6.0</string>
+	<key>CFBundlePackageType</key>
+	<string>FMWK</string>
+	<key>CFBundleSignature</key>
+	<string>????</string>
+	<key>CFBundleVersion</key>
+	<string>1.0</string>
+        <key>CFBundleShortVersionString</key>
+        <string>1.0</string>
+	<key>CSResourcesFileMapped</key>
+	<true/>
+</dict>
+</plist>

projects/xcode/libpng.xcodeproj/.gitignore

@@ -0,0 +1,2 @@
+*.mode1*
+*.pbxuser

projects/xcode/libpng.xcodeproj/project.pbxproj

@@ -0,0 +1,349 @@
+// !$*UTF8*$!
+{
+	archiveVersion = 1;
+	classes = {
+	};
+	objectVersion = 44;
+	objects = {
+
+/* Begin PBXBuildFile section */
+		14461C7109C3C37F005840C0 /* png.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C5D09C3C37F005840C0 /* png.c */; };
+		14461C7209C3C37F005840C0 /* png.h in Headers */ = {isa = PBXBuildFile; fileRef = 14461C5E09C3C37F005840C0 /* png.h */; settings = {ATTRIBUTES = (Public, ); }; };
+		14461C7309C3C37F005840C0 /* pngconf.h in Headers */ = {isa = PBXBuildFile; fileRef = 14461C5F09C3C37F005840C0 /* pngconf.h */; settings = {ATTRIBUTES = (Public, ); }; };
+		14461C7409C3C37F005840C0 /* pngerror.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6009C3C37F005840C0 /* pngerror.c */; };
+		14461C7509C3C37F005840C0 /* pnggccrd.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6109C3C37F005840C0 /* pnggccrd.c */; };
+		14461C7609C3C37F005840C0 /* pngget.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6209C3C37F005840C0 /* pngget.c */; };
+		14461C7709C3C37F005840C0 /* pngmem.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6309C3C37F005840C0 /* pngmem.c */; };
+		14461C7809C3C37F005840C0 /* pngpread.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6409C3C37F005840C0 /* pngpread.c */; };
+		14461C7909C3C37F005840C0 /* pngread.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6509C3C37F005840C0 /* pngread.c */; };
+		14461C7A09C3C37F005840C0 /* pngrio.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6609C3C37F005840C0 /* pngrio.c */; };
+		14461C7B09C3C37F005840C0 /* pngrtran.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6709C3C37F005840C0 /* pngrtran.c */; };
+		14461C7C09C3C37F005840C0 /* pngrutil.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6809C3C37F005840C0 /* pngrutil.c */; };
+		14461C7D09C3C37F005840C0 /* pngset.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6909C3C37F005840C0 /* pngset.c */; };
+		14461C7F09C3C37F005840C0 /* pngtrans.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6B09C3C37F005840C0 /* pngtrans.c */; };
+		14461C8009C3C37F005840C0 /* pngvcrd.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6C09C3C37F005840C0 /* pngvcrd.c */; };
+		14461C8109C3C37F005840C0 /* pngwio.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6D09C3C37F005840C0 /* pngwio.c */; };
+		14461C8209C3C37F005840C0 /* pngwrite.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6E09C3C37F005840C0 /* pngwrite.c */; };
+		14461C8309C3C37F005840C0 /* pngwtran.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6F09C3C37F005840C0 /* pngwtran.c */; };
+		14461C8409C3C37F005840C0 /* pngwutil.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C7009C3C37F005840C0 /* pngwutil.c */; };
+/* End PBXBuildFile section */
+
+/* Begin PBXFileReference section */
+		14461C5D09C3C37F005840C0 /* png.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = png.c; path = ../../png.c; sourceTree = SOURCE_ROOT; };
+		14461C5E09C3C37F005840C0 /* png.h */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.h; name = png.h; path = ../../png.h; sourceTree = SOURCE_ROOT; };
+		14461C5F09C3C37F005840C0 /* pngconf.h */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.h; name = pngconf.h; path = ../../pngconf.h; sourceTree = SOURCE_ROOT; };
+		14461C6009C3C37F005840C0 /* pngerror.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngerror.c; path = ../../pngerror.c; sourceTree = SOURCE_ROOT; };
+		14461C6109C3C37F005840C0 /* pnggccrd.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pnggccrd.c; path = ../../pnggccrd.c; sourceTree = SOURCE_ROOT; };
+		14461C6209C3C37F005840C0 /* pngget.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngget.c; path = ../../pngget.c; sourceTree = SOURCE_ROOT; };
+		14461C6309C3C37F005840C0 /* pngmem.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngmem.c; path = ../../pngmem.c; sourceTree = SOURCE_ROOT; };
+		14461C6409C3C37F005840C0 /* pngpread.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngpread.c; path = ../../pngpread.c; sourceTree = SOURCE_ROOT; };
+		14461C6509C3C37F005840C0 /* pngread.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngread.c; path = ../../pngread.c; sourceTree = SOURCE_ROOT; };
+		14461C6609C3C37F005840C0 /* pngrio.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngrio.c; path = ../../pngrio.c; sourceTree = SOURCE_ROOT; };
+		14461C6709C3C37F005840C0 /* pngrtran.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngrtran.c; path = ../../pngrtran.c; sourceTree = SOURCE_ROOT; };
+		14461C6809C3C37F005840C0 /* pngrutil.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngrutil.c; path = ../../pngrutil.c; sourceTree = SOURCE_ROOT; };
+		14461C6909C3C37F005840C0 /* pngset.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngset.c; path = ../../pngset.c; sourceTree = SOURCE_ROOT; };
+		14461C6B09C3C37F005840C0 /* pngtrans.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngtrans.c; path = ../../pngtrans.c; sourceTree = SOURCE_ROOT; };
+		14461C6C09C3C37F005840C0 /* pngvcrd.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngvcrd.c; path = ../../pngvcrd.c; sourceTree = SOURCE_ROOT; };
+		14461C6D09C3C37F005840C0 /* pngwio.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngwio.c; path = ../../pngwio.c; sourceTree = SOURCE_ROOT; };
+		14461C6E09C3C37F005840C0 /* pngwrite.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngwrite.c; path = ../../pngwrite.c; sourceTree = SOURCE_ROOT; };
+		14461C6F09C3C37F005840C0 /* pngwtran.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngwtran.c; path = ../../pngwtran.c; sourceTree = SOURCE_ROOT; };
+		14461C7009C3C37F005840C0 /* pngwutil.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngwutil.c; path = ../../pngwutil.c; sourceTree = SOURCE_ROOT; };
+		8D07F2C70486CC7A007CD1D0 /* Info.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist; path = Info.plist; sourceTree = "<group>"; };
+		8D07F2C80486CC7A007CD1D0 /* libpng.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = libpng.framework; sourceTree = BUILT_PRODUCTS_DIR; };
+/* End PBXFileReference section */
+
+/* Begin PBXFrameworksBuildPhase section */
+		8D07F2C30486CC7A007CD1D0 /* Frameworks */ = {
+			isa = PBXFrameworksBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXFrameworksBuildPhase section */
+
+/* Begin PBXGroup section */
+		034768DDFF38A45A11DB9C8B /* Products */ = {
+			isa = PBXGroup;
+			children = (
+				8D07F2C80486CC7A007CD1D0 /* libpng.framework */,
+			);
+			name = Products;
+			sourceTree = "<group>";
+		};
+		0867D691FE84028FC02AAC07 /* libpng */ = {
+			isa = PBXGroup;
+			children = (
+				08FB77ACFE841707C02AAC07 /* Source */,
+				089C1665FE841158C02AAC07 /* Resources */,
+				034768DDFF38A45A11DB9C8B /* Products */,
+			);
+			name = libpng;
+			sourceTree = "<group>";
+		};
+		089C1665FE841158C02AAC07 /* Resources */ = {
+			isa = PBXGroup;
+			children = (
+				8D07F2C70486CC7A007CD1D0 /* Info.plist */,
+			);
+			name = Resources;
+			sourceTree = "<group>";
+		};
+		08FB77ACFE841707C02AAC07 /* Source */ = {
+			isa = PBXGroup;
+			children = (
+				14461C5D09C3C37F005840C0 /* png.c */,
+				14461C5E09C3C37F005840C0 /* png.h */,
+				14461C5F09C3C37F005840C0 /* pngconf.h */,
+				14461C6009C3C37F005840C0 /* pngerror.c */,
+				14461C6109C3C37F005840C0 /* pnggccrd.c */,
+				14461C6209C3C37F005840C0 /* pngget.c */,
+				14461C6309C3C37F005840C0 /* pngmem.c */,
+				14461C6409C3C37F005840C0 /* pngpread.c */,
+				14461C6509C3C37F005840C0 /* pngread.c */,
+				14461C6609C3C37F005840C0 /* pngrio.c */,
+				14461C6709C3C37F005840C0 /* pngrtran.c */,
+				14461C6809C3C37F005840C0 /* pngrutil.c */,
+				14461C6909C3C37F005840C0 /* pngset.c */,
+				14461C6B09C3C37F005840C0 /* pngtrans.c */,
+				14461C6C09C3C37F005840C0 /* pngvcrd.c */,
+				14461C6D09C3C37F005840C0 /* pngwio.c */,
+				14461C6E09C3C37F005840C0 /* pngwrite.c */,
+				14461C6F09C3C37F005840C0 /* pngwtran.c */,
+				14461C7009C3C37F005840C0 /* pngwutil.c */,
+			);
+			name = Source;
+			sourceTree = "<group>";
+		};
+/* End PBXGroup section */
+
+/* Begin PBXHeadersBuildPhase section */
+		8D07F2BD0486CC7A007CD1D0 /* Headers */ = {
+			isa = PBXHeadersBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				14461C7209C3C37F005840C0 /* png.h in Headers */,
+				14461C7309C3C37F005840C0 /* pngconf.h in Headers */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXHeadersBuildPhase section */
+
+/* Begin PBXNativeTarget section */
+		8D07F2BC0486CC7A007CD1D0 /* libpng */ = {
+			isa = PBXNativeTarget;
+			buildConfigurationList = 4FADC24208B4156D00ABE55E /* Build configuration list for PBXNativeTarget "libpng" */;
+			buildPhases = (
+				8D07F2BD0486CC7A007CD1D0 /* Headers */,
+				8D07F2BF0486CC7A007CD1D0 /* Resources */,
+				8D07F2C10486CC7A007CD1D0 /* Sources */,
+				8D07F2C30486CC7A007CD1D0 /* Frameworks */,
+				8D07F2C50486CC7A007CD1D0 /* Rez */,
+			);
+			buildRules = (
+			);
+			dependencies = (
+			);
+			name = libpng;
+			productInstallPath = "$(HOME)/Library/Frameworks";
+			productName = libpng;
+			productReference = 8D07F2C80486CC7A007CD1D0 /* libpng.framework */;
+			productType = "com.apple.product-type.framework";
+		};
+/* End PBXNativeTarget section */
+
+/* Begin PBXProject section */
+		0867D690FE84028FC02AAC07 /* Project object */ = {
+			isa = PBXProject;
+			buildConfigurationList = 4FADC24608B4156D00ABE55E /* Build configuration list for PBXProject "libpng" */;
+			compatibilityVersion = "Xcode 2.4";
+			hasScannedForEncodings = 1;
+			mainGroup = 0867D691FE84028FC02AAC07 /* libpng */;
+			productRefGroup = 034768DDFF38A45A11DB9C8B /* Products */;
+			projectDirPath = "";
+			projectRoot = ../..;
+			targets = (
+				8D07F2BC0486CC7A007CD1D0 /* libpng */,
+			);
+		};
+/* End PBXProject section */
+
+/* Begin PBXResourcesBuildPhase section */
+		8D07F2BF0486CC7A007CD1D0 /* Resources */ = {
+			isa = PBXResourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXResourcesBuildPhase section */
+
+/* Begin PBXRezBuildPhase section */
+		8D07F2C50486CC7A007CD1D0 /* Rez */ = {
+			isa = PBXRezBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXRezBuildPhase section */
+
+/* Begin PBXSourcesBuildPhase section */
+		8D07F2C10486CC7A007CD1D0 /* Sources */ = {
+			isa = PBXSourcesBuildPhase;
+			buildActionMask = 2147483647;
+			files = (
+				14461C7109C3C37F005840C0 /* png.c in Sources */,
+				14461C7409C3C37F005840C0 /* pngerror.c in Sources */,
+				14461C7509C3C37F005840C0 /* pnggccrd.c in Sources */,
+				14461C7609C3C37F005840C0 /* pngget.c in Sources */,
+				14461C7709C3C37F005840C0 /* pngmem.c in Sources */,
+				14461C7809C3C37F005840C0 /* pngpread.c in Sources */,
+				14461C7909C3C37F005840C0 /* pngread.c in Sources */,
+				14461C7A09C3C37F005840C0 /* pngrio.c in Sources */,
+				14461C7B09C3C37F005840C0 /* pngrtran.c in Sources */,
+				14461C7C09C3C37F005840C0 /* pngrutil.c in Sources */,
+				14461C7D09C3C37F005840C0 /* pngset.c in Sources */,
+				14461C7F09C3C37F005840C0 /* pngtrans.c in Sources */,
+				14461C8009C3C37F005840C0 /* pngvcrd.c in Sources */,
+				14461C8109C3C37F005840C0 /* pngwio.c in Sources */,
+				14461C8209C3C37F005840C0 /* pngwrite.c in Sources */,
+				14461C8309C3C37F005840C0 /* pngwtran.c in Sources */,
+				14461C8409C3C37F005840C0 /* pngwutil.c in Sources */,
+			);
+			runOnlyForDeploymentPostprocessing = 0;
+		};
+/* End PBXSourcesBuildPhase section */
+
+/* Begin XCBuildConfiguration section */
+		4FADC24308B4156D00ABE55E /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				COPY_PHASE_STRIP = NO;
+				DYLIB_COMPATIBILITY_VERSION = 3;
+				DYLIB_CURRENT_VERSION = 3;
+				FRAMEWORK_VERSION = 1.2.51;
+				GCC_PRECOMPILE_PREFIX_HEADER = NO;
+				GCC_PREFIX_HEADER = "";
+				INFOPLIST_FILE = Info.plist;
+				INSTALL_PATH = "@executable_path/../Frameworks";
+				LIBRARY_STYLE = DYNAMIC;
+				MACH_O_TYPE = mh_dylib;
+				OTHER_LDFLAGS = "-lz";
+				PRODUCT_NAME = libpng;
+				WRAPPER_EXTENSION = framework;
+			};
+			name = Debug;
+		};
+		4FADC24408B4156D00ABE55E /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				DYLIB_COMPATIBILITY_VERSION = 3;
+				DYLIB_CURRENT_VERSION = 3;
+				FRAMEWORK_VERSION = 1.2.51;
+				GCC_PRECOMPILE_PREFIX_HEADER = NO;
+				GCC_PREFIX_HEADER = "";
+				INFOPLIST_FILE = Info.plist;
+				INSTALL_PATH = "@executable_path/../Frameworks";
+				LIBRARY_STYLE = DYNAMIC;
+				MACH_O_TYPE = mh_dylib;
+				OTHER_LDFLAGS = "-lz";
+				PRODUCT_NAME = libpng;
+				WRAPPER_EXTENSION = framework;
+			};
+			name = Release;
+		};
+		4FADC24708B4156D00ABE55E /* Debug */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ARCHS = (
+					i386,
+					ppc,
+					ppc64,
+					x86_64,
+				);
+				DEPLOYMENT_POSTPROCESSING = YES;
+				GCC_ENABLE_CPP_EXCEPTIONS = NO;
+				GCC_ENABLE_CPP_RTTI = NO;
+				GCC_ENABLE_FIX_AND_CONTINUE = YES;
+				GCC_GENERATE_DEBUGGING_SYMBOLS = YES;
+				GCC_OPTIMIZATION_LEVEL = 0;
+				GCC_TREAT_IMPLICIT_FUNCTION_DECLARATIONS_AS_ERRORS = YES;
+				GCC_VERSION_i386 = 4.0;
+				GCC_VERSION_ppc = 3.3;
+				GCC_WARN_ABOUT_RETURN_TYPE = YES;
+				GCC_WARN_UNUSED_VARIABLE = YES;
+				MACOSX_DEPLOYMENT_TARGET = 10.5;
+				"MACOSX_DEPLOYMENT_TARGET[arch=i386]" = 10.4;
+				"MACOSX_DEPLOYMENT_TARGET[arch=ppc]" = 10.2;
+				MACOSX_DEPLOYMENT_TARGET_i386 = 10.4;
+				MACOSX_DEPLOYMENT_TARGET_ppc = 10.2;
+				PREBINDING = NO;
+				SDKROOT = "$(DEVELOPER_SDK_DIR)/MacOSX10.5.sdk";
+				"SDKROOT[arch=i386]" = "$(DEVELOPER_SDK_DIR)/MacOSX10.4u.sdk";
+				"SDKROOT[arch=ppc]" = "$(DEVELOPER_SDK_DIR)/MacOSX10.3.9.sdk";
+				SDKROOT_i386 = "$(DEVELOPER_SDK_DIR)/MacOSX10.4u.sdk";
+				SDKROOT_ppc = "$(DEVELOPER_SDK_DIR)/MacOSX10.3.9.sdk";
+				ZERO_LINK = NO;
+			};
+			name = Debug;
+		};
+		4FADC24808B4156D00ABE55E /* Release */ = {
+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ARCHS = (
+					i386,
+					ppc,
+					ppc64,
+					x86_64,
+				);
+				GCC_ENABLE_CPP_EXCEPTIONS = NO;
+				GCC_ENABLE_CPP_RTTI = NO;
+				GCC_ENABLE_FIX_AND_CONTINUE = NO;
+				GCC_GENERATE_DEBUGGING_SYMBOLS = NO;
+				GCC_OPTIMIZATION_LEVEL = 2;
+				GCC_TREAT_IMPLICIT_FUNCTION_DECLARATIONS_AS_ERRORS = YES;
+				GCC_VERSION_i386 = 4.0;
+				GCC_VERSION_ppc = 3.3;
+				GCC_WARN_ABOUT_RETURN_TYPE = YES;
+				GCC_WARN_UNUSED_VARIABLE = YES;
+				MACOSX_DEPLOYMENT_TARGET = 10.5;
+				"MACOSX_DEPLOYMENT_TARGET[arch=i386]" = 10.4;
+				"MACOSX_DEPLOYMENT_TARGET[arch=ppc]" = 10.2;
+				MACOSX_DEPLOYMENT_TARGET_i386 = 10.4;
+				MACOSX_DEPLOYMENT_TARGET_ppc = 10.2;
+				PREBINDING = NO;
+				SDKROOT = "$(DEVELOPER_SDK_DIR)/MacOSX10.5.sdk";
+				"SDKROOT[arch=i386]" = "$(DEVELOPER_SDK_DIR)/MacOSX10.4u.sdk";
+				"SDKROOT[arch=ppc]" = "$(DEVELOPER_SDK_DIR)/MacOSX10.3.9.sdk";
+				SDKROOT_i386 = "$(DEVELOPER_SDK_DIR)/MacOSX10.4u.sdk";
+				SDKROOT_ppc = "$(DEVELOPER_SDK_DIR)/MacOSX10.3.9.sdk";
+				ZERO_LINK = NO;
+			};
+			name = Release;
+		};
+/* End XCBuildConfiguration section */
+
+/* Begin XCConfigurationList section */
+		4FADC24208B4156D00ABE55E /* Build configuration list for PBXNativeTarget "libpng" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				4FADC24308B4156D00ABE55E /* Debug */,
+				4FADC24408B4156D00ABE55E /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		4FADC24608B4156D00ABE55E /* Build configuration list for PBXProject "libpng" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				4FADC24708B4156D00ABE55E /* Debug */,
+				4FADC24808B4156D00ABE55E /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+/* End XCConfigurationList section */
+	};
+	rootObject = 0867D690FE84028FC02AAC07 /* Project object */;
+}

scripts/README.txt

@@ -1,8 +1,8 @@
 
-Makefiles for  libpng version 1.0.52rc01 - December 23, 2009
+Makefiles for  libpng version 1.2.51 - February 6, 2014
 
  makefile.linux    =>  Linux/ELF makefile
-                       (gcc, creates libpng10.so.0.1.0.52rc01)
+                       (gcc, creates libpng12.so.0.1.2.51)
  makefile.gcc      =>  Generic makefile (gcc, creates static libpng.a)
  makefile.knr      =>  Archaic UNIX Makefile that converts files with
                        ansi2knr (Requires ansi2knr.c from
@@ -20,7 +20,7 @@ Makefiles for  libpng version 1.0.52rc01 - December 23, 2009
  makefile.dec      =>  DEC Alpha UNIX makefile
  makefile.dj2      =>  DJGPP 2 makefile
  makefile.elf      =>  Linux/ELF makefile symbol versioning,
-                       gcc, creates libpng10.so.0.1.0.52rc01)
+                       gcc, creates libpng12.so.0.1.2.51)
  makefile.freebsd  =>  FreeBSD makefile
  makefile.gcc      =>  Generic gcc makefile
  makefile.gccmmx   =>  Generic gcc makefile previously using MMX code
@@ -38,14 +38,14 @@ Makefiles for  libpng version 1.0.52rc01 - December 23, 2009
  makefile.os2      =>  OS/2 Makefile (gcc and emx, requires pngos2.def)
  makefile.sco      =>  For SCO OSr5  ELF and Unixware 7 with Native cc
  makefile.sggcc    =>  Silicon Graphics (gcc,
-                       creates libpng10.so.0.1.0.52rc01)
+                       creates libpng12.so.0.1.2.51)
  makefile.sgi      =>  Silicon Graphics IRIX makefile (cc, creates static lib)
  makefile.solaris  =>  Solaris 2.X makefile (gcc,
-                       creates libpng10.so.0.1.0.52rc01)
+                       creates libpng12.so.0.1.2.51)
  makefile.solaris-x86  =>  Solaris 2.X makefile (gcc, no MMX code,
-                       creates libpng10.so.0.1.0.52rc01)
+                       creates libpng12.so.0.1.2.51)
  makefile.so9      =>  Solaris 9 makefile (gcc,
-                       creates libpng10.so.0.1.0.52rc01)
+                       creates libpng12.so.0.1.2.51)
  makefile.std      =>  Generic UNIX makefile (cc, creates static libpng.a)
  makefile.sunos    =>  Sun makefile
  makefile.32sunu   =>  Sun Ultra 32-bit makefile

scripts/libpng-config-head.in

@@ -11,7 +11,7 @@
 
 # Modeled after libxml-config.
 
-version=1.0.52rc01
+version=1.2.51
 prefix=""
 libdir=""
 libs=""

scripts/libpng.pc.in

@@ -1,10 +1,10 @@
 prefix=@prefix@
 exec_prefix=@exec_prefix@
 libdir=@libdir@
-includedir=@includedir@/libpng10
+includedir=@includedir@/libpng12
 
 Name: libpng
 Description: Loads and saves PNG files
-Version: 1.0.52rc01
-Libs: -L${libdir} -lpng10
+Version: 1.2.51
+Libs: -L${libdir} -lpng12
 Cflags: -I${includedir}

scripts/makefile.32sunu

@@ -9,9 +9,9 @@
 # and license in png.h
 
 # Library name:
-LIBNAME=libpng10
+LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.52rc01
+PNGMIN = 1.2.51
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -19,8 +19,8 @@ LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.2
-OLDSOVER=libpng.so.2.$(PNGMIN)
+OLDSOMAJ=libpng.so.3
+OLDSOVER=libpng.so.3.$(PNGMIN)
 
 # Utilities:
 CC=cc
@@ -33,7 +33,7 @@ RM_F=/bin/rm -f
 SUN_CC_FLAGS=-fast -xtarget=ultra
 SUN_LD_FLAGS=-fast -xtarget=ultra
 
-# where make install puts libpng.a, libpng10.so and libpng10/png.h
+# where make install puts libpng.a, libpng12.so and libpng12/png.h
 prefix=/a
 exec_prefix=$(prefix)
 
@@ -95,7 +95,7 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -106,7 +106,7 @@ libpng-config:
 	echo R_opts=\"-R$(LIBPATH)\"; \
 	echo ccopts=\"-xtarget=ultra\"; \
 	echo ldopts=\"-xtarget=ultra\"; \
-	echo libs=\"-lpng10 -lz -lm\"; \
+	echo libs=\"-lpng12 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.64sunu

@@ -9,9 +9,9 @@
 # and license in png.h
 
 # Library name:
-LIBNAME=libpng10
+LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.52rc01
+PNGMIN = 1.2.51
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -19,8 +19,8 @@ LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.2
-OLDSOVER=libpng.so.2.$(PNGMIN)
+OLDSOMAJ=libpng.so.3
+OLDSOVER=libpng.so.3.$(PNGMIN)
 
 # Utilities:
 CC=cc
@@ -33,7 +33,7 @@ RM_F=/bin/rm -f
 SUN_CC_FLAGS=-fast -xtarget=ultra -xarch=v9
 SUN_LD_FLAGS=-fast -xtarget=ultra -xarch=v9
 
-# where make install puts libpng.a, libpng10.so and libpng10/png.h
+# where make install puts libpng.a, libpng12.so and libpng12/png.h
 prefix=/a
 exec_prefix=$(prefix)
 
@@ -51,7 +51,7 @@ WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
 	-Wstrict-prototypes -Wmissing-prototypes #-Wconversion
 CFLAGS=-I$(ZLIBINC) $(SUN_CC_FLAGS) \
 	# $(WARNMORE) -g -DPNG_DEBUG=5
-LDFLAGS=-L. -R. $(SUN_LD_FLAGS) -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng10 -lz -lm
+LDFLAGS=-L. -R. $(SUN_LD_FLAGS) -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng12 -lz -lm
 
 INCPATH=$(prefix)/include
 LIBPATH=$(exec_prefix)/lib
@@ -95,7 +95,7 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -106,7 +106,7 @@ libpng-config:
 	echo R_opts=\"-R$(LIBPATH)\"; \
 	echo ccopts=\"-xtarget=ultra -xarch=v9\"; \
 	echo ldopts=\"-xtarget=ultra -xarch=v9\"; \
-	echo libs=\"-lpng10 -lz -lm\"; \
+	echo libs=\"-lpng12 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.aix

@@ -21,9 +21,9 @@ RANLIB = ranlib
 RM_F = rm -f
 LN_SF = ln -f -s
 
-LIBNAME=libpng10
+LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.52rc01
+PNGMIN = 1.2.51
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 prefix=/usr/local
@@ -48,8 +48,8 @@ LDDEBUG =
 CRELEASE = -O2
 LDRELEASE = -s
 WARNMORE=-W -Wall
-CFLAGS = -I$(ZLIBINC) $(WARNMORE) $(CRELEASE)
-LDFLAGS = -L. -L$(ZLIBLIB) -lpng10 -lz -lm $(LDRELEASE)
+CFLAGS = -D_ALL_SOURCE -I$(ZLIBINC) $(WARNMORE) $(CRELEASE)
+LDFLAGS = -L. -L$(ZLIBLIB) -lpng12 -lz -lm $(LDRELEASE)
 
 # File extensions
 O=.o

scripts/makefile.beos

@@ -9,9 +9,9 @@
 # and license in png.h
 
 # Library name:
-LIBNAME=libpng10
+LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.52rc01
+PNGMIN = 1.2.51
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -19,8 +19,8 @@ LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.2
-OLDSOVER=libpng.so.2.$(PNGMIN)
+OLDSOMAJ=libpng.so.3
+OLDSOVER=libpng.so.3.$(PNGMIN)
 
 # Utilities:
 CC=gcc
@@ -49,7 +49,7 @@ CFLAGS=-I$(ZLIBINC) -W -Wall -O1 -funroll-loops \
 # LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng -lz
 LDFLAGS=-L. -Wl,-soname=$(LIBSOMAJ) -L$(ZLIBLIB) -lz
 
-# where make install puts libpng.a, libpng10.so*, and png.h
+# where make install puts libpng.a, libpng12.so*, and png.h
 prefix=/usr/local
 exec_prefix=$(prefix)
 INCPATH=$(prefix)/include
@@ -91,13 +91,13 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
 	echo prefix=\"$(prefix)\"; \
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
-	echo libs=\"-lpng10 -lz \"; \
+	echo libs=\"-lpng12 -lz \"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 
@@ -117,7 +117,7 @@ $(OLDSOVER): $(OBJSDLL)
 	$(OLDSOVER) $(OBJSDLL) $(LDFLAGS)
 
 pngtest: pngtest.o $(LIBSO)
-	$(CC) -L$(ZLIBLIB) -L. -lz -lpng10 -o pngtest pngtest.o
+	$(CC) -L$(ZLIBLIB) -L. -lz -lpng12 -o pngtest pngtest.o
 
 test: pngtest
 	./pngtest

scripts/makefile.cegcc

@@ -22,16 +22,16 @@
 # make clean
 
 VERMAJ = 1
-VERMIN = 0
-VERMIC = 52
+VERMIN = 2
+VERMIC = 51
 VER = $(VERMAJ).$(VERMIN).$(VERMIC)
 NAME = libpng
 PACKAGE = $(NAME)-$(VER)
 
-BIN = libpng10-0.dll libpng-2.dll
-LIB = libpng10.a libpng10.dll.a libpng.a libpng.dll.a scripts/png32ce.def
+BIN = libpng12-0.dll libpng-3.dll
+LIB = libpng12.a libpng12.dll.a libpng.a libpng.dll.a scripts/png32ce.def
 INCLUDE = png.h pngconf.h
-PC = libpng10.pc libpng.pc
+PC = libpng12.pc libpng.pc
 
 MANIFESTVERBIN = "Libpng-$(VER): Binary files"
 MANIFESTVERDEV = "Libpng-$(VER): Developer files"

scripts/makefile.cygwin

@@ -74,10 +74,10 @@ CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
         -W -Wall -O3 $(ALIGN) -funroll-loops -DPNG_NO_MMX_CODE \
 	-fomit-frame-pointer) # $(WARNMORE) -g -DPNG_DEBUG=5
 
-LIBNAME = libpng10
+LIBNAME = libpng12
 PNGMAJ = 0
-CYGDLL = 10
-PNGMIN = 1.0.52rc01
+CYGDLL = 12
+PNGMIN = 1.2.51
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 SHAREDLIB=cygpng$(CYGDLL).dll
@@ -141,7 +141,7 @@ libpng.pc: scripts/libpng.pc.in
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng10!-lpng10\ -lz! > libpng.pc
+	-e s!-lpng12!-lpng12\ -lz! > libpng.pc
 
 libpng-config: scripts/libpng-config-head.in scripts/libpng-config-body.in
 	@echo -e Making $(LIBNAME) libpng-config file for this libpng \
@@ -254,16 +254,16 @@ test-dd:
 	echo
 	echo Testing installed dynamic shared library in $(DL).
 	$(CC) -I$(DI) $(CFLAGS) \
-	   `$(BINPATH)/libpng10-config --cflags` pngtest.c \
+	   `$(BINPATH)/libpng12-config --cflags` pngtest.c \
 	   -L$(DL) -L$(ZLIBLIB) \
-	   -o pngtestd `$(BINPATH)/libpng10-config --ldflags`
+	   -o pngtestd `$(BINPATH)/libpng12-config --ldflags`
 	./pngtestd pngtest.png
 
 test-installed:
 	$(CC) $(CFLAGS) \
-	   `$(BINPATH)/libpng10-config --cflags` pngtest.c \
+	   `$(BINPATH)/libpng12-config --cflags` pngtest.c \
 	   -L$(ZLIBLIB) \
-	   -o pngtesti$(EXE) `$(BINPATH)/libpng10-config --ldflags`
+	   -o pngtesti$(EXE) `$(BINPATH)/libpng12-config --ldflags`
 	./pngtesti$(EXE) pngtest.png
 
 clean:

scripts/makefile.darwin

@@ -9,7 +9,7 @@
 # For conditions of distribution and use, see the disclaimer
 # and license in png.h
 
-# where "make install" puts libpng.a, libpng10.dylib, png.h and pngconf.h
+# where "make install" puts libpng.a, libpng12.dylib, png.h and pngconf.h
 prefix=/usr/local
 exec_prefix=$(prefix)
 
@@ -20,9 +20,9 @@ ZLIBLIB=../zlib
 ZLIBINC=../zlib
 
 # Library name:
-LIBNAME = libpng10
-PNGMAJ = 10
-PNGMIN = 1.0.52rc01
+LIBNAME = libpng12
+PNGMAJ = 12
+PNGMIN = 1.2.51
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -30,8 +30,8 @@ LIBSO=$(LIBNAME).dylib
 LIBSOMAJ=$(LIBNAME).$(PNGMAJ).dylib
 LIBSOVER=$(LIBNAME).$(PNGVER).dylib
 OLDSO=libpng.dylib
-OLDSOMAJ=libpng.2.dylib
-OLDSOVER=libpng.2.$(PNGMIN).dylib
+OLDSOMAJ=libpng.3.dylib
+OLDSOVER=libpng.3.$(PNGMIN).dylib
 
 # Utilities:
 CC=cc
@@ -43,7 +43,7 @@ RM_F=/bin/rm -f
 
 # CFLAGS=-I$(ZLIBINC) -W -Wall -O3 -funroll-loops -DPNG_NO_MMX_CODE
 CFLAGS=-I$(ZLIBINC) -W -Wall -O -funroll-loops
-LDFLAGS=-L. -L$(ZLIBLIB) -lpng10 -lz
+LDFLAGS=-L. -L$(ZLIBLIB) -lpng12 -lz
 
 INCPATH=$(prefix)/include
 LIBPATH=$(exec_prefix)/lib
@@ -87,14 +87,14 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng10!-lpng10\ -lz! > libpng.pc
+	-e s!-lpng12!-lpng12\ -lz! > 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 libs=\"-lpng10 -lz\"; \
+	echo libs=\"-lpng12 -lz\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 
@@ -114,7 +114,7 @@ $(LIBSOVER): $(OBJSDLL)
 $(OLDSOVER): $(OBJSDLL)
 	$(CC) -dynamiclib \
 	 -install_name $(LIBPATH)/$(OLDSOMAJ) \
-	 -current_version 2 -compatibility_version 2 \
+	 -current_version 3 -compatibility_version 3 \
 	 -o $(OLDSOVER) \
 	 $(OBJSDLL) -L$(ZLIBLIB) -lz
 

scripts/makefile.dec

@@ -8,17 +8,17 @@
 
 # Library name:
 PNGMAJ = 0
-PNGMIN = 1.0.52rc01
+PNGMIN = 1.2.51
 PNGVER = $(PNGMAJ).$(PNGMIN)
-LIBNAME = libpng10
+LIBNAME = libpng12
 
 # Shared library names:
 LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.2
-OLDSOVER=libpng.so.2.$(PNGMIN)
+OLDSOMAJ=libpng.so.3
+OLDSOVER=libpng.so.3.$(PNGMIN)
 
 # Utilities:
 AR_RC=ar rc
@@ -75,7 +75,7 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -83,7 +83,7 @@ libpng-config:
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
 	echo ccopts=\"-std\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
-	echo libs=\"-lpng10 -lz -lm\"; \
+	echo libs=\"-lpng12 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.elf

@@ -1,4 +1,4 @@
-# makefile for libpng.a and libpng10.so on Linux ELF with gcc
+# makefile for libpng.a and libpng12.so on Linux ELF with gcc
 # Copyright (C) 1998, 1999, 2002, 2006, 2008 Greg Roelofs
 # and Glenn Randers-Pehrson
 # Copyright (C) 1996, 1997 Andreas Dilger
@@ -10,13 +10,13 @@
 # Modified for Debian by Junichi Uekawa and Josselin Mouette
 # Major modifications are:
 #    * link libpng explicitly with libz and libm
-#    * $(OLDSO).2 is a symlink rather than a different library
+#    * $(OLDSO).3 is a symlink rather than a different library
 #    * versioned symbols
 
 # Library name:
-LIBNAME = libpng10
+LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.52rc01
+PNGMIN = 1.2.51
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -24,8 +24,8 @@ LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.2
-OLDSOVER=libpng.so.2.$(PNGMIN)
+OLDSOMAJ=libpng.so.3
+OLDSOVER=libpng.so.3.$(PNGMIN)
 
 # Utilities:
 AR_RC=ar rc
@@ -35,8 +35,8 @@ LN_SF=ln -sf
 RANLIB=ranlib
 RM_F=/bin/rm -f
 
-# where "make install" puts libpng10.a, libpng10.so*,
-# libpng10/png.h and libpng10/pngconf.h
+# where "make install" puts libpng12.a, libpng12.so*,
+# libpng12/png.h and libpng12/pngconf.h
 # Prefix must be a full pathname.
 prefix=/usr/local
 exec_prefix=$(prefix)
@@ -60,7 +60,7 @@ WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
 CFLAGS=-W -Wall -D_REENTRANT -O2 \
 	$(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
 
-LDFLAGS=-L. -lpng10
+LDFLAGS=-L. -lpng12
 LDFLAGS_A=libpng.a -lz -lm
 LIBADDFLAGS=-lz -lm
 
@@ -107,11 +107,11 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng.syms: png.h pngconf.h
 	$(CC) $(CFLAGS) -E -DPNG_BUILDSYMS -DPNG_INTERNAL png.h |\
-	awk -F '[\t [\\]();]' -v PNGMAJ=$(PNGMAJ) 'BEGIN{printf("PNG10_%s {global:\n",PNGMAJ)}\
+	awk -F '[\t [\\]();]' -v PNGMAJ=$(PNGMAJ) 'BEGIN{printf("PNG12_%s {global:\n",PNGMAJ)}\
 	{ for (i=1;i+2<=NF;++i)\
 		if ($$(i)=="PNG_FUNCTION_EXPORT" && $$(i+2)=="END")\
 			print $$(i+1) ";";\
@@ -128,8 +128,8 @@ libpng-config:
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
 	echo L_opts=\"\"; \
 	echo R_opts=\"\"; \
-	echo libs=\"-lpng10\"; \
-	echo all_libs=\"-lpng10 $(LIBADDFLAGS)\"; \
+	echo libs=\"-lpng12\"; \
+	echo all_libs=\"-lpng12 $(LIBADDFLAGS)\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.gcmmx

@@ -1,4 +1,4 @@
-# makefile for libpng.a and libpng10.so on Linux ELF with gcc using MMX
+# makefile for libpng.a and libpng12.so on Linux ELF with gcc using MMX
 # assembler code
 # Copyright 2002, 2006, 2008 Greg Roelofs and Glenn Randers-Pehrson
 # Copyright 1998-2001 Greg Roelofs
@@ -15,9 +15,9 @@
 #        the background!  Context switches between MMX and FPU are expensive.
 
 # Library name:
-LIBNAME = libpng10
+LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.52rc01
+PNGMIN = 1.2.51
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -25,8 +25,8 @@ LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.2
-OLDSOVER=libpng.so.2.$(PNGMIN)
+OLDSOMAJ=libpng.so.3
+OLDSOVER=libpng.so.3.$(PNGMIN)
 
 # Utilities:
 CC = gcc
@@ -37,8 +37,8 @@ MKDIR_P = mkdir -p
 RANLIB = ranlib
 RM_F = /bin/rm -f
 
-# where "make install" puts libpng10.a, libpng10.so*,
-# libpng10/png.h and libpng10/pngconf.h
+# where "make install" puts libpng12.a, libpng12.so*,
+# libpng12/png.h and libpng12/pngconf.h
 # Prefix must be a full pathname.
 prefix=/usr/local
 exec_prefix=$(prefix)
@@ -73,7 +73,7 @@ CFLAGS=-DPNG_THREAD_UNSAFE_OK -I$(ZLIBINC) -W -Wall -O \
 #	-m486 -malign-double -ffast-math \
 #	$(ALIGN) -funroll-loops -funroll-all-loops -fomit-frame-pointer
 
-LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng10 -lz -lm
+LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng12 -lz -lm
 LDFLAGS_A=-L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) libpng.a -lz -lm
 
 
@@ -119,7 +119,7 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -128,7 +128,7 @@ libpng-config:
 	echo cppflags=\"-DPNG_THREAD_UNSAFE_OK \"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
 	echo R_opts=\"-Wl,-rpath,$(LIBPATH)\"; \
-	echo libs=\"-lpng10 -lz -lm\"; \
+	echo libs=\"-lpng12 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.hp64

@@ -19,9 +19,9 @@ ZLIBINC=/opt/zlib/include
 #   SHAREDLIB=libz.sl
 
 # Library name:
-LIBNAME = libpng10
+LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.52rc01
+PNGMIN = 1.2.51
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -29,8 +29,8 @@ LIBSO=$(LIBNAME).sl
 LIBSOMAJ=$(LIBNAME).sl.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).sl.$(PNGVER)
 OLDSO=libpng.sl
-OLDSOMAJ=libpng.sl.2
-OLDSOVER=libpng.sl.2.$(PNGMIN)
+OLDSOMAJ=libpng.sl.3
+OLDSOVER=libpng.sl.3.$(PNGMIN)
 
 # Utilities:
 AR_RC=ar rc
@@ -48,7 +48,7 @@ CCFLAGS=-I$(ZLIBINC) -O -Ae -Wl,+vnocompatwarnings +DD64 \
 
 LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz -lm
 
-# where make install puts libpng.a, libpng10.sl, and png.h
+# where make install puts libpng.a, libpng12.sl, and png.h
 prefix=/opt/libpng
 exec_prefix=$(prefix)
 INCPATH=$(prefix)/include
@@ -93,7 +93,7 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -101,7 +101,7 @@ libpng-config:
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
 	echo ccopts=\"-Ae +DA1.1 +DS2.0\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
-	echo libs=\"-lpng10 -lz -lm\"; \
+	echo libs=\"-lpng12 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.hpgcc

@@ -9,9 +9,9 @@
 # and license in png.h
 
 # Library name:
-LIBNAME = libpng10
+LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.52rc01
+PNGMIN = 1.2.51
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -19,8 +19,8 @@ LIBSO=$(LIBNAME).sl
 LIBSOMAJ=$(LIBNAME).sl.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).sl.$(PNGVER)
 OLDSO=libpng.sl
-OLDSOMAJ=libpng.sl.2
-OLDSOVER=libpng.sl.2.$(PNGMIN)
+OLDSOMAJ=libpng.sl.3
+OLDSOVER=libpng.sl.3.$(PNGMIN)
 
 # Utilities:
 CC=gcc
@@ -58,8 +58,8 @@ WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
 
 CFLAGS=-I$(ZLIBINC) -W -Wall -O3 -funroll-loops -DPNG_NO_MMX_CODE \
 	$(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
-#LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng10 -lz -lm
-LDFLAGS=-L. -L$(ZLIBLIB) -lpng10 -lz -lm
+#LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng12 -lz -lm
+LDFLAGS=-L. -L$(ZLIBLIB) -lpng12 -lz -lm
 
 INCPATH=$(prefix)/include
 LIBPATH=$(exec_prefix)/lib
@@ -103,13 +103,13 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
 	echo prefix=\"$(prefix)\"; \
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
-	echo libs=\"-lpng10 -lz -lm\"; \
+	echo libs=\"-lpng12 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.hpux

@@ -19,9 +19,9 @@ ZLIBINC=/opt/zlib/include
 #   SHAREDLIB=libz.sl
 
 # Library name:
-LIBNAME = libpng10
+LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.52rc01
+PNGMIN = 1.2.51
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -29,8 +29,8 @@ LIBSO=$(LIBNAME).sl
 LIBSOMAJ=$(LIBNAME).sl.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).sl.$(PNGVER)
 OLDSO=libpng.sl
-OLDSOMAJ=libpng.sl.2
-OLDSOVER=libpng.sl.2.$(PNGMIN)
+OLDSOMAJ=libpng.sl.3
+OLDSOVER=libpng.sl.3.$(PNGMIN)
 
 # Utilities:
 AR_RC=ar rc
@@ -40,7 +40,7 @@ LN_SF=ln -sf
 RANLIB=ranlib
 RM_F=/bin/rm -f
 
-# where make install puts libpng.a, libpng10.sl, and png.h
+# where make install puts libpng.a, libpng12.sl, and png.h
 prefix=/opt/libpng
 exec_prefix=$(prefix)
 INCPATH=$(prefix)/include
@@ -90,7 +90,7 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -98,7 +98,7 @@ libpng-config:
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
 	echo ccopts=\"-Ae +DA1.1 +DS2.0\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
-	echo libs=\"-lpng10 -lz -lm\"; \
+	echo libs=\"-lpng12 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.linux

@@ -1,4 +1,4 @@
-# makefile for libpng.a and libpng10.so on Linux ELF with gcc
+# makefile for libpng.a and libpng12.so on Linux ELF with gcc
 # Copyright (C) 1998, 1999, 2002, 2006, 2008 Greg Roelofs and
 # Glenn Randers-Pehrson
 # Copyright (C) 1996, 1997 Andreas Dilger
@@ -8,9 +8,9 @@
 # and license in png.h
 
 # Library name:
-LIBNAME = libpng10
+LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.52rc01
+PNGMIN = 1.2.51
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -18,8 +18,8 @@ LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.2
-OLDSOVER=libpng.so.2.$(PNGMIN)
+OLDSOMAJ=libpng.so.3
+OLDSOVER=libpng.so.3.$(PNGMIN)
 
 # Utilities:
 AR_RC=ar rc
@@ -29,8 +29,8 @@ LN_SF=ln -sf
 RANLIB=ranlib
 RM_F=/bin/rm -f
 
-# where "make install" puts libpng10.a, libpng10.so*,
-# libpng10/png.h and libpng10/pngconf.h
+# where "make install" puts libpng12.a, libpng12.so*,
+# libpng12/png.h and libpng12/pngconf.h
 # Prefix must be a full pathname.
 prefix=/usr/local
 exec_prefix=$(prefix)
@@ -54,7 +54,7 @@ WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
 CFLAGS=-I$(ZLIBINC) -W -Wall -O3 -funroll-loops -DPNG_NO_MMX_CODE \
 	$(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
 
-LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng10 -lz -lm
+LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng12 -lz -lm
 LDFLAGS_A=-L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) libpng.a -lz -lm
 
 INCPATH=$(prefix)/include
@@ -99,7 +99,7 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -107,7 +107,7 @@ libpng-config:
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
 	echo R_opts=\"-Wl,-rpath,$(LIBPATH)\"; \
-	echo libs=\"-lpng10 -lz -lm\"; \
+	echo libs=\"-lpng12 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.mingw

@@ -14,6 +14,10 @@
 
 # Built from makefile.cygwin
 
+# This makefile expects to be run under the MSYS shell (part of
+# the MINGW project) and not under CMD.EXE which does not provide
+# "cat" or "sed".
+
 # This makefile intends to support building outside the src directory
 # if desired. When invoking it, specify an argument to SRCDIR on the
 # command line that points to the top of the directory where your source
@@ -74,10 +78,10 @@ CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
         -W -Wall -O3 $(ALIGN) -funroll-loops -DPNG_NO_MMX_CODE \
 	-fomit-frame-pointer) # $(WARNMORE) -g -DPNG_DEBUG=5
 
-LIBNAME = libpng10
+LIBNAME = libpng12
 PNGMAJ = 0
-MINGDLL = 10
-PNGMIN = 1.0.52rc01
+MINGDLL = 12
+PNGMIN = 1.2.51
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 SHAREDLIB=libpng$(MINGDLL).dll
@@ -138,7 +142,7 @@ libpng.pc: scripts/libpng.pc.in
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng-config: scripts/libpng-config-head.in scripts/libpng-config-body.in
 	@echo -e Making $(LIBNAME) libpng-config file for this libpng \
@@ -245,16 +249,16 @@ test-dd:
 	echo
 	echo Testing installed dynamic shared library in $(DL).
 	$(CC) -I$(DI) $(CFLAGS) \
-	   `$(BINPATH)/libpng10-config --cflags` pngtest.c \
+	   `$(BINPATH)/libpng12-config --cflags` pngtest.c \
 	   -L$(DL) -L$(ZLIBLIB) \
-	   -o pngtestd `$(BINPATH)/libpng10-config --ldflags`
+	   -o pngtestd `$(BINPATH)/libpng12-config --ldflags`
 	./pngtestd pngtest.png
 
 test-installed:
 	$(CC) $(CFLAGS) \
-	   `$(BINPATH)/libpng10-config --cflags` pngtest.c \
+	   `$(BINPATH)/libpng12-config --cflags` pngtest.c \
 	   -L$(ZLIBLIB) \
-	   -o pngtesti$(EXE) `$(BINPATH)/libpng10-config --ldflags`
+	   -o pngtesti$(EXE) `$(BINPATH)/libpng12-config --ldflags`
 	./pngtesti$(EXE) pngtest.png
 
 clean:

scripts/makefile.ne12bsd

@@ -13,11 +13,11 @@
 LOCALBASE?=/usr/local
 LIBDIR=	${LOCALBASE}/lib
 MANDIR= ${LOCALBASE}/man
-INCSDIR=${LOCALBASE}/include/libpng10
+INCSDIR=${LOCALBASE}/include/libpng12
 
-LIB=	png10
+LIB=	png12
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.0.52rc01
+SHLIB_MINOR=	1.2.51
 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

@@ -8,7 +8,7 @@
 # For conditions of distribution and use, see the disclaimer
 # and license in png.h
 
-# You should also run makefile.ne10bsd
+# You should also run makefile.ne12bsd
 
 LOCALBASE?=/usr/local
 LIBDIR=	${LOCALBASE}/lib
@@ -17,7 +17,7 @@ INCSDIR=${LOCALBASE}/include
 
 LIB=	png
 SHLIB_MAJOR=	3
-SHLIB_MINOR=	1.0.52rc01
+SHLIB_MINOR=	1.2.51
 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.nommx

@@ -1,4 +1,4 @@
-# makefile for libpng.a and libpng10.so on Linux ELF with gcc
+# makefile for libpng.a and libpng12.so on Linux ELF with gcc
 # Copyright (C) 1998, 1999, 2002, 2006-2008 Greg Roelofs and
 # Glenn Randers-Pehrson
 # Copyright (C) 1996, 1997 Andreas Dilger
@@ -8,9 +8,9 @@
 # and license in png.h
 
 # Library name:
-LIBNAME = libpng10
+LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.52rc01
+PNGMIN = 1.2.51
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -18,8 +18,8 @@ LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.2
-OLDSOVER=libpng.so.2.$(PNGMIN)
+OLDSOMAJ=libpng.so.3
+OLDSOVER=libpng.so.3.$(PNGMIN)
 
 # Utilities:
 AR_RC=ar rc
@@ -29,8 +29,8 @@ LN_SF=ln -sf
 RANLIB=ranlib
 RM_F=/bin/rm -f
 
-# where "make install" puts libpng10.a, libpng10.so*,
-# libpng10/png.h and libpng10/pngconf.h
+# where "make install" puts libpng12.a, libpng12.so*,
+# libpng12/png.h and libpng12/pngconf.h
 # Prefix must be a full pathname.
 prefix=/usr/local
 exec_prefix=$(prefix)
@@ -54,7 +54,7 @@ WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
 CFLAGS=-I$(ZLIBINC) -W -Wall -O3 -funroll-loops -DPNG_NO_MMX_CODE \
 	$(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
 
-LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng10 -lz -lm
+LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng12 -lz -lm
 LDFLAGS_A=-L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) libpng.a -lz -lm
 
 INCPATH=$(prefix)/include
@@ -100,7 +100,7 @@ libpng.pc:
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng10!-lpng10\ -lz\ -lm! \
+	-e s!-lpng12!-lpng12\ -lz\ -lm! \
 	-e s!Cflags: !Cflags:\ -DPNG_NO_MMX_CODE!> libpng.pc
 
 libpng-config:
@@ -109,7 +109,7 @@ libpng-config:
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME) -DPNG_NO_MMX_CODE\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
 	echo R_opts=\"-Wl,-rpath,$(LIBPATH)\"; \
-	echo libs=\"-lpng10 -lz -lm\"; \
+	echo libs=\"-lpng12 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.openbsd

@@ -11,7 +11,7 @@ LIBDIR=	${PREFIX}/lib
 MANDIR= ${PREFIX}/man/cat
 
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.0.52rc01
+SHLIB_MINOR=	1.2.51
 
 LIB=	png
 SRCS=	png.c pngerror.c pngget.c pngmem.c pngpread.c \

scripts/makefile.sco

@@ -10,9 +10,9 @@
 # and license in png.h
 
 # Library name:
-LIBNAME = libpng10
+LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.52rc01
+PNGMIN = 1.2.51
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -20,8 +20,8 @@ LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.2
-OLDSOVER=libpng.so.2.$(PNGMIN)
+OLDSOMAJ=libpng.so.3
+OLDSOVER=libpng.so.3.$(PNGMIN)
 
 # Utilities:
 CC=cc
@@ -42,7 +42,7 @@ ZLIBLIB=../zlib
 ZLIBINC=../zlib
 
 CFLAGS= -dy -belf -I$(ZLIBINC) -O3 -DPNG_NO_MMX_CODE
-LDFLAGS=-L. -L$(ZLIBLIB) -lpng10 -lz -lm
+LDFLAGS=-L. -L$(ZLIBLIB) -lpng12 -lz -lm
 
 INCPATH=$(prefix)/include
 LIBPATH=$(exec_prefix)/lib
@@ -86,7 +86,7 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -94,7 +94,7 @@ libpng-config:
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
 	echo ccopts=\"-belf\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
-	echo libs=\"-lpng10 -lz -lm\"; \
+	echo libs=\"-lpng12 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.sggcc

@@ -1,4 +1,4 @@
-# makefile for libpng.a and libpng10.so, SGI IRIX with 'cc'
+# makefile for libpng.a and libpng12.so, SGI IRIX with 'cc'
 # Copyright (C) 2001-2002, 2006 Glenn Randers-Pehrson
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
 #
@@ -7,9 +7,9 @@
 # and license in png.h
 
 # Library name:
-LIBNAME=libpng10
+LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.52rc01
+PNGMIN = 1.2.51
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -17,8 +17,8 @@ LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.2
-OLDSOVER=libpng.so.2.$(PNGMIN)
+OLDSOMAJ=libpng.so.3
+OLDSOVER=libpng.so.3.$(PNGMIN)
 
 # Utilities:
 AR_RC=ar rc
@@ -28,7 +28,7 @@ LN_SF=ln -sf
 RANLIB=echo
 RM_F=/bin/rm -f
 
-# Where make install puts libpng.a, libpng10.so, and libpng10/png.h
+# Where make install puts libpng.a, libpng12.so, and libpng12/png.h
 # Prefix must be a full pathname.
 
 prefix=/usr/local
@@ -93,7 +93,7 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -104,7 +104,7 @@ libpng-config:
 	echo ldopts=\"$(ABI)\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
 	echo libdir=\"$(LIBPATH)\"; \
-	echo libs=\"-lpng10 -lz -lm\"; \
+	echo libs=\"-lpng12 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.sgi

@@ -1,4 +1,4 @@
-# makefile for libpng.a and libpng10.so, SGI IRIX with 'cc'
+# makefile for libpng.a and libpng12.so, SGI IRIX with 'cc'
 # Copyright (C) 2001-2002, 2006, 2007 Glenn Randers-Pehrson
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
 #
@@ -7,9 +7,9 @@
 # and license in png.h
 
 # Library name:
-LIBNAME=libpng10
+LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.52rc01
+PNGMIN = 1.2.51
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -17,8 +17,8 @@ LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.2
-OLDSOVER=libpng.so.2.$(PNGMIN)
+OLDSOMAJ=libpng.so.3
+OLDSOVER=libpng.so.3.$(PNGMIN)
 
 # Utilities:
 AR_RC=ar rc
@@ -28,7 +28,7 @@ LN_SF=ln -sf
 RANLIB=echo
 RM_F=/bin/rm -f
 
-# Where make install puts libpng.a, libpng10.so, and libpng10/png.h
+# Where make install puts libpng.a, libpng12.so, and libpng12/png.h
 # Prefix must be a full pathname.
 
 prefix=/usr/local
@@ -50,7 +50,7 @@ WARNMORE=-fullwarn
 # Note: -KPIC is the default anyhow
 #CFLAGS= $(ABI) -I$(ZLIBINC) -O $(WARNMORE) -KPIC -DPNG_NO_MMX_CODE # -g -DPNG_DEBUG=5
 CFLAGS=$(ABI) -I$(ZLIBINC) -O $(WARNMORE) -DPNG_NO_MMX_CODE
-LDFLAGS_A=$(ABI) -L. -L$(ZLIBLIB) -lpng10 -lz -lm
+LDFLAGS_A=$(ABI) -L. -L$(ZLIBLIB) -lpng12 -lz -lm
 LDFLAGS=$(ABI) -L. -L$(ZLIBLIB) -lpng -lz -lm
 LDSHARED=cc $(ABI) -shared -soname $(LIBSOMAJ) \
   -set_version sgi$(PNGMAJ).0
@@ -96,7 +96,7 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -107,7 +107,7 @@ libpng-config:
 	echo ldopts=\"$(ABI)\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
 	echo libdir=\"$(LIBPATH)\"; \
-	echo libs=\"-lpng10 -lz -lm\"; \
+	echo libs=\"-lpng12 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.so9

@@ -11,17 +11,17 @@
 
 # Library name:
 PNGMAJ = 0
-PNGMIN = 1.0.52rc01
+PNGMIN = 1.2.51
 PNGVER = $(PNGMAJ).$(PNGMIN)
-LIBNAME = libpng10
+LIBNAME = libpng12
 
 # Shared library names:
 LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.2
-OLDSOVER=libpng.so.2.$(PNGMIN)
+OLDSOMAJ=libpng.so.3
+OLDSOVER=libpng.so.3.$(PNGMIN)
 
 # Utilities:
 # gcc 2.95 doesn't work.
@@ -52,7 +52,7 @@ ZLIBINC=/usr/include
 	-Wstrict-prototypes -Wmissing-prototypes #-Wconversion
 #CFLAGS=-I$(ZLIBINC) -W -Wall -O3 $(WARNMORE) -g -DPNG_DEBUG=5 -DPNG_NO_MMX_CODE
 CFLAGS=-I$(ZLIBINC) -O3 -DPNG_NO_MMX_CODE
-LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng10 -lz -lm
+LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng12 -lz -lm
 
 INCPATH=$(prefix)/include
 LIBPATH=$(exec_prefix)/lib
@@ -96,7 +96,7 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -104,7 +104,7 @@ libpng-config:
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
 	echo R_opts=\"-R$(LIBPATH)\"; \
-	echo libs=\"-lpng10 -lz -lm\"; \
+	echo libs=\"-lpng12 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.solaris

@@ -9,9 +9,9 @@
 # and license in png.h
 
 # Library name:
-LIBNAME = libpng10
+LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.52rc01
+PNGMIN = 1.2.51
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -19,8 +19,8 @@ LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.2
-OLDSOVER=libpng.so.2.$(PNGMIN)
+OLDSOMAJ=libpng.so.3
+OLDSOVER=libpng.so.3.$(PNGMIN)
 
 # Utilities:
 AR_RC=ar rc
@@ -30,7 +30,7 @@ LN_SF=ln -f -s
 RANLIB=echo
 RM_F=/bin/rm -f
 
-# Where make install puts libpng.a, libpng10.so*, and png.h
+# Where make install puts libpng.a, libpng12.so*, and png.h
 prefix=/usr/local
 exec_prefix=$(prefix)
 
@@ -48,7 +48,7 @@ WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
 	-Wstrict-prototypes -Wmissing-prototypes #-Wconversion
 CFLAGS=-I$(ZLIBINC) -W -Wall -O -DPNG_NO_MMX_CODE; \
 	# $(WARNMORE) -g -DPNG_DEBUG=5
-LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng10 -lz -lm
+LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng12 -lz -lm
 
 INCPATH=$(prefix)/include
 LIBPATH=$(exec_prefix)/lib
@@ -92,7 +92,7 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -101,7 +101,7 @@ libpng-config:
 	echo cppflags=\"-DPNG_NO_MMX_CODE\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
 	echo R_opts=\"-R$(LIBPATH)\"; \
-	echo libs=\"-lpng10 -lz -lm\"; \
+	echo libs=\"-lpng12 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.solaris-x86

@@ -9,9 +9,9 @@
 # and license in png.h
 
 # Library name:
-LIBNAME = libpng10
+LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.52rc01
+PNGMIN = 1.2.51
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -19,8 +19,8 @@ LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.2
-OLDSOVER=libpng.so.2.$(PNGMIN)
+OLDSOMAJ=libpng.so.3
+OLDSOVER=libpng.so.3.$(PNGMIN)
 
 # Utilities:
 AR_RC=ar rc
@@ -30,7 +30,7 @@ LN_SF=ln -f -s
 RANLIB=echo
 RM_F=/bin/rm -f
 
-# Where make install puts libpng.a, libpng10.so*, and png.h
+# Where make install puts libpng.a, libpng12.so*, and png.h
 prefix=/usr/local
 exec_prefix=$(prefix)
 
@@ -48,7 +48,7 @@ WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
 	-Wstrict-prototypes -Wmissing-prototypes #-Wconversion
 CFLAGS=-I$(ZLIBINC) -W -Wall -O \
 	# $(WARNMORE) -g -DPNG_DEBUG=5
-LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng10 -lz -lm
+LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng12 -lz -lm
 
 INCPATH=$(prefix)/include
 LIBPATH=$(exec_prefix)/lib
@@ -92,7 +92,7 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -101,7 +101,7 @@ libpng-config:
 	echo cppflags=\""; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
 	echo R_opts=\"-R$(LIBPATH)\"; \
-	echo libs=\"-lpng10 -lz -lm\"; \
+	echo libs=\"-lpng12 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config