build problem on OSX rtaudio

[shurikenyo]

trying to compile latest mi-rack downloaded today.
OSX High Sierra 10.13.6
I get this error on make dep,

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cp rtaudio/build/librtaudio_static.a lib/librtaudio.a
cp: rtaudio/build/librtaudio_static.a: No such file or directory
make[1]: *** [lib/librtaudio.a] Error 1
make: *** [dep] Error 2

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i have a feeling that it has to do with the rtaudio build. Any ideas?