Hey All, I'm wondering if any of you could help me understand why openscenegraph is still telling me to build ffmpeg with -fPIC
I'm building the svn of openscenegraph from source by doing: ./configure && make and when it's around 97%, I get this: Scanning dependencies of target osgdb_ffmpeg [ 96%] Building CXX object src/osgPlugins/ffmpeg/CMakeFiles/osgdb_ffmpeg.dir/FFmpegClocks.o [ 96%] Building CXX object src/osgPlugins/ffmpeg/CMakeFiles/osgdb_ffmpeg.dir/FFmpegDecoderAudio.o /home/sneilan/Desktop/OpenSceneGraph/src/osgPlugins/ffmpeg/FFmpegDecoderAudio.cpp: In member function ‘size_t osgFFmpeg::FFmpegDecoderAudio::decodeFrame(void*, size_t)’: /home/sneilan/Desktop/OpenSceneGraph/src/osgPlugins/ffmpeg/FFmpegDecoderAudio.cpp:254: warning: ‘int avcodec_decode_audio2(AVCodecContext*, int16_t*, int*, const uint8_t*, int)’ is deprecated (declared at /usr/local/include/libavcodec/avcodec.h:3098) /home/sneilan/Desktop/OpenSceneGraph/src/osgPlugins/ffmpeg/FFmpegDecoderAudio.cpp:254: warning: ‘int avcodec_decode_audio2(AVCodecContext*, int16_t*, int*, const uint8_t*, int)’ is deprecated (declared at /usr/local/include/libavcodec/avcodec.h:3098) /home/sneilan/Desktop/OpenSceneGraph/src/osgPlugins/ffmpeg/FFmpegDecoderAudio.cpp:287: warning: comparison between signed and unsigned integer expressions [ 96%] Building CXX object src/osgPlugins/ffmpeg/CMakeFiles/osgdb_ffmpeg.dir/FFmpegDecoder.o /home/sneilan/Desktop/OpenSceneGraph/src/osgPlugins/ffmpeg/FFmpegDecoder.cpp: In member function ‘bool osgFFmpeg::FFmpegDecoder::readNextPacketNormal()’: /home/sneilan/Desktop/OpenSceneGraph/src/osgPlugins/ffmpeg/FFmpegDecoder.cpp:286: warning: comparison between signed and unsigned integer expressions /home/sneilan/Desktop/OpenSceneGraph/src/osgPlugins/ffmpeg/FFmpegDecoder.cpp:293: warning: comparison between signed and unsigned integer expressions [ 97%] Building CXX object src/osgPlugins/ffmpeg/CMakeFiles/osgdb_ffmpeg.dir/FFmpegDecoderVideo.o /home/sneilan/Desktop/OpenSceneGraph/src/osgPlugins/ffmpeg/FFmpegDecoderVideo.cpp: In member function ‘void osgFFmpeg::FFmpegDecoderVideo::decodeLoop()’: /home/sneilan/Desktop/OpenSceneGraph/src/osgPlugins/ffmpeg/FFmpegDecoderVideo.cpp:160: warning: ‘int avcodec_decode_video(AVCodecContext*, AVFrame*, int*, const uint8_t*, int)’ is deprecated (declared at /usr/local/include/libavcodec/avcodec.h:3155) /home/sneilan/Desktop/OpenSceneGraph/src/osgPlugins/ffmpeg/FFmpegDecoderVideo.cpp:160: warning: ‘int avcodec_decode_video(AVCodecContext*, AVFrame*, int*, const uint8_t*, int)’ is deprecated (declared at /usr/local/include/libavcodec/avcodec.h:3155) /home/sneilan/Desktop/OpenSceneGraph/src/osgPlugins/ffmpeg/FFmpegDecoderVideo.cpp:170: warning: comparison between signed and unsigned integer expressions /home/sneilan/Desktop/OpenSceneGraph/src/osgPlugins/ffmpeg/FFmpegDecoderVideo.cpp:172: warning: comparison between signed and unsigned integer expressions /home/sneilan/Desktop/OpenSceneGraph/src/osgPlugins/ffmpeg/FFmpegDecoderVideo.cpp:176: warning: comparison between signed and unsigned integer expressions [ 97%] Building CXX object src/osgPlugins/ffmpeg/CMakeFiles/osgdb_ffmpeg.dir/FFmpegImageStream.o [ 97%] Building CXX object src/osgPlugins/ffmpeg/CMakeFiles/osgdb_ffmpeg.dir/FFmpegAudioStream.o [ 97%] Building CXX object src/osgPlugins/ffmpeg/CMakeFiles/osgdb_ffmpeg.dir/ReaderWriterFFmpeg.o Linking CXX shared module ../../../lib/osgPlugins-2.9.4/osgdb_ffmpeg.so /usr/bin/ld: /usr/local/lib/libavcodec.a(dsputil_mmx.o): relocation R_X86_64_PC32 against symbol `ff_pw_20' can not be used when making a shared object; recompile with -fPIC /usr/bin/ld: final link failed: Bad value collect2: ld returned 1 exit status make[2]: *** [lib/osgPlugins-2.9.4/osgdb_ffmpeg.so] Error 1 make[1]: *** [src/osgPlugins/ffmpeg/CMakeFiles/osgdb_ffmpeg.dir/all] Error 2 make: *** [all] Error 2 I've compiled ffmpeg from the latest svn with these options: ./configure --enable-gpl --enable-pthreads --enable-postproc --enable-libmp3lame --enable-libx264 --enable-libfaac --extra-cflags=-fPIC --enable-nonfree So, I am compiling with fPIC and it still doesn't work. I'm running ubuntu 64 9.04 with all the other dependencies satisfied with apt-get. Thank you for your time. -Sean Neilan
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