tree 868389a9dc5c4901c9a36670878d7228805dc942
parent aab24fa1b3ccaab8770902a3c50ea9564925d053
author Cosmin Truta <ctruta@gmail.com> 1676215328 +0200
committer Cosmin Truta <ctruta@gmail.com> 1676215328 +0200

cmake: Redo the fix for Clang support on Windows

Redo commit 70fda1837d5de802ce5f7e04be239192b6a74d92, with a redesign.

Define the variables PNG_SHARED_OUTPUT_NAME and PNG_STATIC_OUTPUT_NAME
for the benefit of the OUTPUT_NAME target properties of, respectively,
the shared libpng build and the static libpng build. Fix and improve
not only Clang, but also other Windows toolchains, such as Embarcadero.

Rename the variable PNGLIB_SHARED_SOVERSION to PNG_ABI_VERSION.
The applicability of this variable, which is much wider than the old
name used to suggest, includes the definitions of PNG_*_OUTPUT_NAME.

Delete the confusingly-named variables PNGLIB_NAME and PNG_LIB_NAME,
and rename PNG_LIB_TARGETS to PNG_LIBRARY_TARGETS.

Set the macros _CRT_SECURE_NO_DEPRECATE and _CRT_NONSTDC_NO_DEPRECATE,
for all compilers that use MSVC run-time library headers. Currently,
these compilers are MSVC and Clang/Windows.

Add or improve the comments that accompany user-serviceable variables
and options.

Co-authored-by: B. Scott Michel <scooter.phd@gmail.com>
Signed-off-by: Cosmin Truta <ctruta@gmail.com>