Andreas Rheinhardt a78173374a ffbuild/common: Fix CPPFLAGS applied for compiling C++ files ... Currently, $(CPPFLAGS) and $(CFLAGS) are prepended to CXXFLAGS (the flags for compiling C++) like this: CXXFLAGS := $(CPPFLAGS) $(CFLAGS) $(CXXFLAGS) Using ":=" creates a simply expanded variable, i.e. the values of the variable at the time of assignment are used and later modifications to them are ignored (using a recursively expanding variable (i.e. "=" instead of ":=") is not really possible here, as there would be an infinite loop when evaluating CXXFLAGS). Yet we perform later additions to CPPFLAGS: HAVE_AV_CONFIG_H and BUILDING_libfoo are defined. These do not reach C++ compilations. To fix this a trick is employed to prepend to a recursively expanded variable while keeping it recursively expanded. There are two practical consequences of this: C++ files now no longer include the version.h header, but only the version_major.h header of their library, saving some recompilations. Furthermore, they now get some optimized math functions (namely the ones from lavu/intmath.h instead of the ones from lavu/common.h). (av_parity() is the only one for which it makes a difference.) Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>		2022-05-24 21:30:52 +02:00
..
.gitignore
arch.mak
bin2c.c
common.mak	ffbuild/common: Fix CPPFLAGS applied for compiling C++ files	2022-05-24 21:30:52 +02:00
library.mak	Fix libversion.sh for split version headers, to unbreak shared library builds	2022-03-17 11:11:17 +02:00
libversion.sh	Fix libversion.sh for split version headers, to unbreak shared library builds	2022-03-17 11:11:17 +02:00
pkgconfig_generate.sh
version.sh