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Libpng 1.6.29 - March 16, 2017
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-1.6.29.tar.xz (LZMA-compressed, recommended)
libpng-1.6.29.tar.gz
Source files with CRLF line endings (for Windows), without the
"configure" script
lpng1629.7z (LZMA-compressed, recommended)
lpng1629.zip
Other information:
libpng-1.6.29-README.txt
libpng-1.6.29-LICENSE.txt
libpng-1.6.29-*.asc (armored detached GPG signatures)
Changes since the last public release (1.6.28):
Readded "include(GNUInstallDirs)" to CMakeLists.txt (Gianfranco Costamagna).
Moved SSE2 optimization code into the main libpng source directory.
Configure libpng with "configure --enable-intel-sse" or compile
libpng with "-DPNG_INTEL_SSE" in CPPFLAGS to enable it.
Simplified conditional compilation in pngvalid.c, for AIX (Michael Felt).
Avoid conditional directives that break statements in pngrutil.c (Romero
Malaquias)
The contrib/examples/pngtopng.c recovery code was in the wrong "if"
branches; the comments were correct.
Added code for PowerPC VSX optimisation (Vadim Barkov).
Avoid potential overflow of shift operations in png_do_expand() (Aaron Boxer).
Change test ZLIB_VERNUM >= 0x1281 to ZLIB_VERNUM >= 0x1290 in pngrutil.c
because Solaris 11 distributes zlib-1.2.8.f that is older than 1.2.8.1.
Suppress clang warnings about implicit sign changes in png.c
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Glenn R-P