When building against musl instead of glibc, compilation fails at
libavutil/error.c
CC libavutil/error.o
libavutil/error.c: In function 'av_strerror':
libavutil/error.c:68:9: error: implicit declaration of function
'strerror_r' [-Werror=implicit-function-declaration]
cc1: some warnings being treated as errors
make: *** [libavutil/error.o] Error 1
I tried to find a fix and I am very unsure about the solution.
I am cross compiling for a linux target. I took a look at
ffmpeg/configure and added the following line:
# OS specific
case $target_os in
[..]
linux)
add_cppflags -D_POSIX_SOURCE
enable dv1394
;;
[..]
With this I can compile ffmpeg successfully.
What do you think about this solution?
Why is #undef _GNU_SOURCE in libavutil/error.c defined?
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