by earlier versions of GCC fixed for Cygwin and Min/GW (which both use old GCCs.)
ARM support is enabled by default in zlib.props (unsupported by Microsoft) and
ARM compilation is made possible by deleting the check for x86. The test programs
cannot be run because they are not signed.

pnglibconf.h to control the defaults.

for building on SunOs)

code to the hardware subdirectory and added comments to pngrutil.c so that
implementors of other optimizations know what to do.

code to the hardware subdirectory and added comments to pngrutil.c so that
implementors of other optimizations know what to do.

the fall-through condition.

PNG_CHUNK_MALLOC_MAX) that causes the MALLOC_MAX limit not to work (John Bowler)

from the manual page.

and later.

color. This is useful for debugging pngstest color inaccuracy reports.

code for too little gain; implementing full ICC color correction is maybe
desireable but is left up to applications.

resulting in VS2010 having to update the files.

READ_GAMMA.  Prior to 1.6.0 switching off READ_GAMMA did unpredictable things
to the interfaces that use it (specifically, png_do_background in 1.4 would
simply display composite for grayscale images but do composition
with the incorrect arithmetic for color ones). In 1.6 the semantic
of -DPNG_NO_READ_GAMMA is changed to simply disable any interface that
depends on it; this obliges people who set it to consider whether they
really want it off if they happen to use any of the interfaces in
question (typically most users who disable it won't).

management system (CMS). In practice it is not possible to obtain cHRM
information reliably using just the end-point tags because they do not exist
in the vast majority of profiles.  Instead it is necessary to run the endpoints
through the ICC colorimetric intent transform (as described in the v4
spec).  Since this is likely to be too much code inside libpng for too
little gain (it implies a fairly complete CMS implementation) the code
has been changed to allow an external CMS to be used.  This code is
temporarily disabled until a suitable set of test cases using one or more
external CMS implementations have been implemented.

libpng-1.6.0beta30.