[FFmpeg-user] duplicate symbol

[桃源老師]

Hello list member, 

I’m now trying to build static ffmpeg on macOS Mojave 10.14.

Then I got the following "duplicate symbol” error at linking.

How can I fix it???   Please help me!!


CC	fftools/ffmpeg_videotoolbox.o
LD	ffmpeg_g
duplicate symbol _get_rdmult_delta in:
    /Volumes/ffmpeg_compile/lib/libaom.a(encodeframe.c.o)
    /Volumes/ffmpeg_compile/lib/libvpx.a(vp9_encodeframe.c.o)
duplicate symbol _init_tpl_stats in:
    /Volumes/ffmpeg_compile/lib/libaom.a(encoder.c.o)
    /Volumes/ffmpeg_compile/lib/libvpx.a(vp9_encoder.c.o)
duplicate symbol _init_gop_frames in:
    /Volumes/ffmpeg_compile/lib/libaom.a(encoder.c.o)
    /Volumes/ffmpeg_compile/lib/libvpx.a(vp9_encoder.c.o)
duplicate symbol _get_quantize_error in:
    /Volumes/ffmpeg_compile/lib/libaom.a(encoder.c.o)
    /Volumes/ffmpeg_compile/lib/libvpx.a(vp9_encoder.c.o)
duplicate symbol _round_floor in:
    /Volumes/ffmpeg_compile/lib/libaom.a(encoder.c.o)
    /Volumes/ffmpeg_compile/lib/libvpx.a(vp9_encoder.c.o)
duplicate symbol _mc_flow_dispenser in:
    /Volumes/ffmpeg_compile/lib/libaom.a(encoder.c.o)
    /Volumes/ffmpeg_compile/lib/libvpx.a(vp9_encoder.c.o)
duplicate symbol _motion_compensated_prediction in:
    /Volumes/ffmpeg_compile/lib/libaom.a(encoder.c.o)
    /Volumes/ffmpeg_compile/lib/libvpx.a(vp9_encoder.c.o)
duplicate symbol _mode_estimation in:
    /Volumes/ffmpeg_compile/lib/libaom.a(encoder.c.o)
    /Volumes/ffmpeg_compile/lib/libvpx.a(vp9_encoder.c.o)
duplicate symbol _wht_fwd_txfm in:
    /Volumes/ffmpeg_compile/lib/libaom.a(encoder.c.o)
    /Volumes/ffmpeg_compile/lib/libvpx.a(vp9_encoder.c.o)
duplicate symbol _tpl_model_update in:
    /Volumes/ffmpeg_compile/lib/libaom.a(encoder.c.o)
    /Volumes/ffmpeg_compile/lib/libvpx.a(vp9_encoder.c.o)
duplicate symbol _tpl_model_store in:
    /Volumes/ffmpeg_compile/lib/libaom.a(encoder.c.o)
    /Volumes/ffmpeg_compile/lib/libvpx.a(vp9_encoder.c.o)
duplicate symbol _tpl_model_update_b in:
    /Volumes/ffmpeg_compile/lib/libaom.a(encoder.c.o)
    /Volumes/ffmpeg_compile/lib/libvpx.a(vp9_encoder.c.o)
duplicate symbol _get_overlap_area in:
    /Volumes/ffmpeg_compile/lib/libaom.a(encoder.c.o)
    /Volumes/ffmpeg_compile/lib/libvpx.a(vp9_encoder.c.o)
ld: 13 duplicate symbols for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [ffmpeg_g] Error 1


Best Regards,


// Miya aka. TougenRoushi