I am trying to link with a library (I do not have the source) that uses ffmpeg. I have the various bits installed (I have tried both openSUSE and Packman versions). When I do this: gcc source.c -I /usr/include/ffmpeg -lsomelib -lavformat -lavcodec -lavutil -lswscale I get this: /usr/lib/libsomelib.so: undefined reference to `avformat_alloc_output_context2@LIBAVFORMAT_FFMPEG_56' /usr/lib/libsomelib.so is a binary for which I do not have the source. Others claim it should be usable in openSUSE. It is not really called this. I get this for a dozen or so functions in the various ffmpeg libs. The library does contain avformat_alloc_output_context2. But what is the @LIBAVFORMAT_FFMPEG_56 after the name? The library is: lrwxrwxrwx 1 root root 24 Sep 18 14:35 /usr/lib64/libavformat.so -> libavformat.so.56.40.101 lrwxrwxrwx 1 root root 24 Dec 20 15:17 /usr/lib64/libavformat.so.56 -> libavformat.so.56.40.101 -rwxr-xr-x 1 root root 1896832 Dec 2 18:50 /usr/lib64/libavformat.so.56.40.101 Which seems correct. I am obviously missing something. -- Roger Oberholtzer -- To unsubscribe, e-mail: opensuse-programming+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-programming+owner@opensuse.org