I am using git pulled just before this mail. Here is some error that I am getting LD ffmpeg_g /usr/bin/ld: libavdevice/libavdevice.a(decklink_common.o): undefined reference to symbol 'dlsym@@GLIBC_2.2.5' /usr/lib/gcc/x86_64-linux-gnu/4.8/../../../x86_64-linux-gnu/libdl.so: error adding symbols: DSO missing from command line collect2: error: ld returned 1 exit status make: *** [ffmpeg_g] Error 1
If I look doing verbose you can see I have already added -ldl in my extra ldflags anshulm@tele-uni01:~/work/bmd/test/ffmpeg$ make V=1 gcc -Llibavcodec -Llibavdevice -Llibavfilter -Llibavformat -Llibavresample -Llibavutil -Llibpostproc -Llibswscale -Llibswresample -ldl -Wl,--as-needed -Wl,-z,noexecstack -Wl,--warn-common -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample -o ffmpeg_g cmdutils.o ffmpeg_opt.o ffmpeg_filter.o ffmpeg.o ffmpeg_vdpau.o -lavdevice -lavfilter -lavformat -lavcodec -lswresample -lswscale -lavutil -lXv -lX11 -lXext -lstdc++ -lstdc++ -lva -lxcb -lxcb-shm -lxcb -lxcb-xfixes -lxcb-render -lxcb-shape -lxcb -lxcb-shape -lxcb -lX11 -ljack -lasound -lSDL -lm -llzma -lz -pthread -lvdpau /usr/bin/ld: libavdevice/libavdevice.a(decklink_common.o): undefined reference to symbol 'dlsym@@GLIBC_2.2.5' /usr/lib/gcc/x86_64-linux-gnu/4.8/../../../x86_64-linux-gnu/libdl.so: error adding symbols: DSO missing from command line collect2: error: ld returned 1 exit status make: *** [ffmpeg_g] Error 1 Its look like an library order issue, if I use library at the end of coomand, it works. anshulm@tele-uni01:~/work/bmd/test/ffmpeg$ gcc -Llibavcodec -Llibavdevice -Llibavfilter -Llibavformat -Llibavresample -Llibavutil -Llibpostproc -Llibswscale -Llibswresample -ldl -Wl,--as-needed -Wl,-z,noexecstack -Wl,--warn-common -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample -o ffmpeg_g cmdutils.o ffmpeg_opt.o ffmpeg_filter.o ffmpeg.o ffmpeg_vdpau.o -lavdevice -lavfilter -lavformat -lavcodec -lswresample -lswscale -lavutil -lXv -lX11 -lXext -lstdc++ -lstdc++ -lva -lxcb -lxcb-shm -lxcb -lxcb-xfixes -lxcb-render -lxcb-shape -lxcb -lxcb-shape -lxcb -lX11 -ljack -lasound -lSDL -lm -llzma -lz -pthread -lvdpau -ldl _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user