The commit removes the three compile warning options from the individual project
files into the zlib.props globals (this should probably be renamed in 1.7). It
increases the warning level from 4 to All and adds a list of the warnings which
need to be turned off. This is semi-documentary; the intent is to tell users of
libpng which warnings have been examined and judged non-fixable at present.
The warning about structure padding *IS* fixable, but it is a signficant change
(moving structure members around). It is currently partially fixed in 1.7, but
only partially.
Signed-off-by: John Bowler <jbowler@acm.org>
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.
Also corrected zlib.vcxproj into which Visual Studio had introduced
what it calls an "authoring error". The change to make pnglibconf.h
simply copies the file; in the future it may actually generate the
file from scripts/pnglibconf.dfa as the other build systems do.
