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02-20-2008, 06:05 PM
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 Dynamic library symbol lookup error I would like to ask you what means "Symbol lookup error" in this context: $ ffmpeg: symbol lookup error: /usr/lib/libavformat.so.50: undefined symbol: dlopen AFAIK dlopen() is in /lib/ld-linux.so.2. If I have this dynamic library. Why this function is undefined? objdump and nm report me that there is no symbols in this library. $ objdump -t /usr/lib/libavformat.so.50 /usr/lib/libavformat.so.50: file format elf32-i386 SYMBOL TABLE: no symbols And ldd report these dependencies: $ ldd /usr/lib/libavformat.so.50 libavutil.so.49 => /usr/lib/libavutil.so.49 (0x400a5000) libavcodec.so.51 => /usr/lib/libavcodec.so.51 (0x400ab000) libz.so.1 => /usr/lib/libz.so.1 (0x40491000) libogg.so.0 => /usr/lib/libogg.so.0 (0x404a3000) libpthread.so.0 => /lib/libpthread.so.0 (0x404a8000) libc.so.6 => /lib/libc.so.6 (0x404f9000) libvorbis.so.0 => /usr/lib/libvorbis.so.0 (0x40612000) libvorbisenc.so.2 => /usr/lib/libvorbisenc.so.2 (0x4063a000) libxvidcore.so.4 => /usr/lib/libxvidcore.so.4 (0x40738000) libfaac.so.0 => /usr/lib/libfaac.so.0 (0x40841000) libfaad.so.0 => /usr/lib/libfaad.so.0 (0x40851000) /lib/ld-linux.so.2 (0x80000000) libm.so.6 => /lib/libm.so.6 (0x40891000) Thank in advance.      |
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