required ffmpeg version?

[vaguinerg]

c++ -o wf-recorder wf-recorder.p/src_frame-writer.cpp.o wf-recorder.p/src_main.cpp.o wf-recorder.p/src_averr.c.o wf-recorder.p/src_pulse.cpp.o wf-recorder.p/src_audio.cpp.o -Wl,--as-needed -Wl,--no-undefined -Wl,-O1 -Wl,-rpath,/usr/local/lib -Wl,-rpath-link,/usr/local/lib -Wl,--start-group proto/libwl_protos.a /usr/local/lib/libwayland-client.so /usr/local/lib/libavutil.so /usr/local/lib/libavcodec.so /usr/local/lib/libavformat.so /usr/local/lib/libavdevice.so /usr/local/lib/libavfilter.so -pthread /usr/local/lib/libswresample.so /usr/local/lib/libgbm.so /usr/local/lib/libdrm.so /usr/local/lib/libpulse-simple.so /usr/local/lib/libpulse.so -Wl,--end-group
/usr/local/bin/ld: wf-recorder.p/src_frame-writer.cpp.o: in function FrameWriter::add_audio(void const*)':
frame-writer.cpp:(.text+0x1fd1): undefined reference to av_channel_layout_copy'
/usr/local/bin/ld: wf-recorder.p/src_frame-writer.cpp.o: in function FrameWriter::init_audio_stream()':
frame-writer.cpp:(.text+0x26bf): undefined reference to av_channel_layout_check'
/usr/local/bin/ld: frame-writer.cpp:(.text+0x26df): undefined reference to av_channel_layout_from_mask'
/usr/local/bin/ld: frame-writer.cpp:(.text+0x27ef): undefined reference to av_opt_set_chlayout'
/usr/local/bin/ld: frame-writer.cpp:(.text+0x2812): undefined reference to av_opt_set_chlayout'
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.