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 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 Glenn R-P