编译可gdb调试ffmpeg

    ./configure --prefix=/usr --enable-gpl --enable-pthreads --disable-postproc --enable-avfilter --disable-libxcb-shape --enable-debug --enable-static --disable-shared --disable-optimizations --disable-asm --disable-stripping --disable-libxcb --disable-libxcb-shm --disable-libxcb-xfixes --disable-ffserver --disable-ffplay  --enable-debug --enable-nonfree --enable-libx264 --enable-libx265 --enable-libfaac --enable-librtmp --enable-libmp3lame --enable-libfdk-aac --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvo-amrwbenc --enable-version3 --enable-libvpx --enable-encoder=vorbis --enable-encoder=vorbis --enable-libass --disable-indev=alsa --disable-indev=libdc1394 --disable-indev=v4l2 --disable-indev=vfwcap --disable-indev=x11_grab_device --disable-indev=oss --disable-indev=v4l --disable-indev=dv1394 --disable-indev=bktr --disable-indev=jack --disable-outdev=alsa --disable-outdev=oss --extra-cflags="${FFMPEG_EXTRA_CFLAGS}" --extra-libs="${FFMPEG_EXTRA_LIBS}"