Hello, It's me again - the dude who compiles ffmpeg for macOS... ;-) I haven't updated the referenced libbluray, but only compiled ffmpeg the way I always do. The last time was about 3 days ago and all was good. This is the git hash of ffmpeg I tried to compile: b47abd5737 duplicate symbol '_dec_init' in: fftools/ffmpeg_dec.o /Users/Shared/ffmpeg/sw/lib/libbluray.a(libbluray_la-dec.o) ld: 1 duplicate symbol for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation) The only code that changed was ffmpeg and libx265, thus I suspect it was a change to ffmpeg. I can't really do a git bisect, because this error only happens after ffmpeg is compiled at the linker stage, so that would take me forever.... However, the dev who did a change related to this would probably know right away. Cheers, K. C. -- regards Helmut K. C. Tessarek KeyID 0x172380A011EF4944 Key fingerprint = 8A55 70C1 BD85 D34E ADBC 386C 1723 80A0 11EF 4944 /* Thou shalt not follow the NULL pointer for chaos and madness await thee at its end. */