94 lines
4.6 KiB
Plaintext
94 lines
4.6 KiB
Plaintext
|
|
Libpng 1.6.7 - November 14, 2013
|
|
|
|
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-1.6.7.tar.xz (LZMA-compressed, recommended)
|
|
libpng-1.6.7.tar.gz
|
|
|
|
Source files with CRLF line endings (for Windows), without the
|
|
"configure" script
|
|
|
|
lpng167.7z (LZMA-compressed, recommended)
|
|
lpng167.zip
|
|
|
|
Other information:
|
|
|
|
libpng-1.6.7-README.txt
|
|
libpng-1.6.7-LICENSE.txt
|
|
Gnupg/*.asc (PGP armored detached signatures)
|
|
|
|
Changes since the last public release (1.6.6):
|
|
|
|
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
|
|
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.
|
|
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.
|
|
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.
|
|
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
|