Compilation fails on Mac OSX with fatal error

[dczaretsky]

I'm trying to build this on Mac OSX Sierra 10.12.5 and I'm getting a compilation fatal error below. Any idea why this is happening and how to resolve it?

AR libavfilter/libavfilter.a
fatal error: /Library/Developer/CommandLineTools/usr/bin/ar: fatal error in /Library/Developer/CommandLineTools/usr/bin/ranlib
make: *** [libavfilter/libavfilter.a] Error 1
rm: *.bc: No such file or directory
cp: dist/libz.bc: No such file or directory
cp: ../ffmpeg/ffmpeg: No such file or directory
INFO:root:(Emscripten: Running sanity checks)
ERROR:root:ffmpeg.bc: No such file or directory ("ffmpeg.bc" was expected to be an input file, based on the commandline arguments provided)
Finished Build

[iooops]

Having the same issue