Greetings, when trying to clean compile MAME 0.201 on my Mac it fails:

Compiling src/devices/machine/ie15.cpp...
Archiving liboptional.a...
make: *** [macosx_x64_clang] Error 2

Running 10.13.6 on a 2017 model iMac.
Is this a known issue? Any suggestions or fixes?


=will=