
Libpng 1.5.17rc02 - June 18, 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

   1.5.17rc02.tar.xz (LZMA-compressed, recommended)
   1.5.17rc02.tar.gz
   1.5.17rc02.tar.bz2

Source files with CRLF line endings (for Windows), without the
"configure" script

   lp1517r02.7z  (LZMA-compressed, recommended)
   lp1517r02.zip

Other information:

   1.5.17rc02-README.txt
   1.5.17rc02-LICENSE.txt

Changes since the last public release (1.5.16):

Version 1.5.17beta01 [June 8, 2013]
  Removed a redundant test from png_set_IHDR().
  Added set(CMAKE_CONFIGURATION_TYPES ...) to CMakeLists.txt (Andrew Hundt)
  Deleted set(CMAKE_BUILD_TYPE) block from CMakeLists.txt
  Make ARM NEON support work at compile time (not just configure time).
    This moves the test on __ARM_NEON__ into pngconf.h to avoid issues when
    using a compiler that compiles for multiple architectures at one time.
  Removed PNG_FILTER_OPTIMIZATIONS and PNG_ARM_NEON_SUPPORTED from
    pnglibconf.h, allowing more of the decisions to be made internally
    (pngpriv.h) during the compile.  Without this, symbol prefixing is broken
    under certain circumstances on ARM platforms.  Now only the API parts of
    the optimizations ('check' vs 'api') are exposed in the public header files
    except that the new setting PNG_ARM_NEON_OPT documents how libpng makes the
    decision about whether or not to use the optimizations.
  Protect symbol prefixing against CC/CPPFLAGS/CFLAGS useage.
    Previous iOS/Xcode fixes for the ARM NEON optimizations moved the test
    on __ARM_NEON__ from configure time to compile time.  This breaks symbol
    prefixing because the definition of the special png_init_filter_functions
    call was hidden at configure time if the relevant compiler arguments are
    passed in CFLAGS as opposed to CC.  This change attempts to avoid all
    the confusion that would result by declaring the init function even when
    it is not used, so that it will always get prefixed.

Version 1.5.17rc01 [June 18, 2013]
  No changes.

Version 1.5.17rc02 [June 18, 2013]
  Revised libpng.3 so that "doclift" can process it.

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