> > So how is it possible that clock_gettime() must not be defined to allow > starting the executable, but this object has to be?
Because I build ffmpeg with cc and linker flag "-mmacosx-version-min=10.7" to support lower os versions. If no such flag, the target os is the sdk version you use, e.g. 10.x. Then the symbol is not compiled as a weak symbol and it must be resolved at runtime. You can see all weak symbols using `nm -mg libavcodec.dylib |grep -E "undefined.*weak"` _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
