[FFmpeg-devel] Build break: VideoToolbox VP9 support breaks H.264-only build

[Cameron Gutman]

I am building minimal ffmpeg libraries for my application using the following
configure command:

./configure --enable-shared --disable-all --enable-avcodec --enable-decoder=h264 --enable-hwaccel=h264_videotoolbox

libavcodec.dylib now fails to link after the following commit:

commit a41a2efc85f8c88caec10040ee437562f9d0b947
Author: rcombs <rcombs at rcombs.me>
Date:   Sat Nov 13 02:43:06 2021 -0600

    lavc/videotoolbox: add VP9 hardware acceleration
    
    On M1 Max, this supports profiles 0 and 2, but not 1 and 3.


The error is:

Undefined symbols for architecture x86_64:
  "_ff_videotoolbox_vpcc_extradata_create", referenced from:
      _videotoolbox_start in videotoolbox.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [libavcodec/libavcodec.59.dylib] Error 1


Perhaps ff_videotoolbox_vpcc_extradata_create() needs to go in videotoolbox.c
like the other ff_videotoolbox_*_extradata_create() functions?



Regards,
Cam