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| Libpng 1.6.7rc02 - November 7, 2013 |
| |
| This is not intended to be a public release. It will be replaced |
| within a few weeks by a public version or by another test version. |
| |
| Files available for download: |
| |
| Source files with LF line endings (for Unix/Linux) and with a |
| "configure" script |
| |
| 1.6.7rc02.tar.xz (LZMA-compressed, recommended) |
| 1.6.7rc02.tar.gz |
| |
| Source files with CRLF line endings (for Windows), without the |
| "configure" script |
| |
| lp167r02.7z (LZMA-compressed, recommended) |
| lp167r02.zip |
| |
| Other information: |
| |
| 1.6.7rc02-README.txt |
| 1.6.7rc02-LICENSE.txt |
| Gnupg/*.asc (PGP armored detached signatures) |
| |
| Changes since the last public release (1.6.6): |
| |
| Version 1.6.7beta01 [September 30, 2013] |
| Revised unknown chunk code to correct several bugs in the NO_SAVE_/NO_WRITE |
| combination |
| Allow HANDLE_AS_UNKNOWN to work when other options are configured off. Also |
| fixed the pngminim makefiles to work when $(MAKEFLAGS) contains stuff |
| which terminates the make options (as by default in recent versions of |
| Gentoo). |
| Avoid up-cast warnings in pngvalid.c. On ARM the alignment requirements of |
| png_modifier are greater than that of png_store and as a consequence |
| compilation of pngvalid.c results in a warning about increased alignment |
| requirements because of the bare cast to (png_modifier*). The code is safe, |
| because the pointer is known to point to a stack allocated png_modifier, |
| but this change avoids the warning. |
| Fixed default behavior of ARM_NEON_API. If the ARM NEON API option was |
| compiled without the CHECK option it defaulted to on, not off. |
| Check user callback behavior in pngunknown.c. Previous versions compiled |
| if SAVE_UNKNOWN was not available but did nothing since the callback |
| was never implemented. |
| Merged pngunknown.c with 1.7 version and back ported 1.7 improvements/fixes |
| |
| Version 1.6.7beta02 [October 12, 2013] |
| Made changes for compatibility with automake 1.14: |
| 1) Added the 'compile' program to the list of programs that must be cleaned |
| in autogen.sh |
| 2) Added 'subdir-objects' which causes .c files in sub-directories to be |
| compiled such that the corresponding .o files are also in the |
| sub-directory. This is because automake 1.14 warns that the |
| current behavior of compiling to the top level directory may be removed |
| in the future. |
| 3) Updated dependencies on pnglibconf.h to match the new .o locations and |
| added all the files in contrib/libtests and contrib/tools that depend |
| on pnglibconf.h |
| 4) Added 'BUILD_SOURCES = pnglibconf.h'; this is the automake recommended |
| way of handling the dependencies of sources that are machine generated; |
| unfortunately it only works if the user does 'make all' or 'make check', |
| so the dependencies (3) are still required. |
| Cleaned up (char*) casts of zlib messages. The latest version of the Intel C |
| compiler complains about casting a string literal as (char*), so copied the |
| treatment of z_const from the library code into pngfix.c |
| Simplified error message code in pngunknown. The simplification has the |
| useful side effect of avoiding a bogus warning generated by the latest |
| version of the Intel C compiler (it objects to |
| condition ? string-literal : string-literal). |
| Make autogen.sh work with automake 1.13 as well as 1.14. Do this by always |
| removing the 1.14 'compile' script but never checking for it. |
| |
| Version 1.6.7beta03 [October 19, 2013] |
| Added ARMv8 support (James Yu <james.yu at linaro.org>). Added file |
| arm/filter_neon_intrinsics.c; enable with -mfpu=neon. |
| Revised pngvalid to generate size images with as many filters as it can |
| manage, limited by the number of rows. |
| Cleaned up ARM NEON compilation handling. The tests are now in pngpriv.h |
| and detect the broken GCC compilers. |
| |
| Version 1.6.7beta04 [October 26, 2013] |
| Allow clang derived from older GCC versions to use ARM intrinsics. This |
| causes all clang builds that use -mfpu=neon to use the intrinsics code, |
| not the assembler code. This has only been tested on iOS 7. It may be |
| necessary to exclude some earlier clang versions but this seems unlikely. |
| Changed NEON implementation selection mechanism. This allows assembler |
| or intrinsics to be turned on at compile time during the build by defining |
| PNG_ARM_NEON_IMPLEMENTATION to the correct value (2 or 1). This macro |
| is undefined by default and the build type is selected in pngpriv.h. |
| |
| Version 1.6.7rc01 [November 2, 2013] |
| No changes. |
| |
| Version 1.6.7rc02 [November 7, 2013] |
| Fixed #include in filter_neon_intrinsics.c and ctype macros. The ctype char |
| checking macros take an unsigned char argument, not a signed char. |
| |
| 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 |