We run into the following error when building ffmpeg with xevd support unless we explicitly pass -lm in CFLAGS:
ERROR: xevd >= 0.4.1 not found using pkg-config
If you think configure made a mistake, make sure you are using the latest
version from Git. If the latest version fails, report the problem to the
ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.libera.chat.
Include the log file "ffbuild/config.log" produced by configure as this will help
solve the problem.
With help I've tracked this down to src_main/CMakeLists.txt specifying target_link_libraries(${LIB_NAME} m) only for the static library target and not the shared library.
By specifying the dependency for the shared library too the resulting libxevd.so contains a proper reference to a libm.so, which means downstream doesn't need to provide -lm.
We run into the following error when building ffmpeg with xevd support unless we explicitly pass
-lmin CFLAGS:With help I've tracked this down to
src_main/CMakeLists.txtspecifyingtarget_link_libraries(${LIB_NAME} m)only for the static library target and not the shared library.By specifying the dependency for the shared library too the resulting
libxevd.socontains a proper reference to alibm.so, which means downstream doesn't need to provide-lm.