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N
ffmpeg-0.6.3
n0.10
n0.10.1
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n0.10.11
n0.10.12
n0.10.13
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n4.3-dev
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v0.5
v0.5.1
v0.5.2
v0.5.3
v0.6
v0.6.1
${ noResults }
FFmpeg/ffbuild
Andreas Rheinhardt
a78173374a
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> |
3 years ago | |
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.. | ||
.gitignore | avfilter: compress CUDA PTX code if possible | 4 years ago |
arch.mak | avutil: [loongarch] Add support for loongarch SIMD. | 3 years ago |
bin2c.c | avfilter: compress CUDA PTX code if possible | 4 years ago |
common.mak | ffbuild/common: Fix CPPFLAGS applied for compiling C++ files | 3 years ago |
library.mak | Fix libversion.sh for split version headers, to unbreak shared library builds | 3 years ago |
libversion.sh | Fix libversion.sh for split version headers, to unbreak shared library builds | 3 years ago |
pkgconfig_generate.sh |
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version.sh |
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