Problems building SuperColliderAU on MacOS 10.13.6

Hello,
My SuperColliderAU build is getting hung up after running CMake. It gets to
this point in the process, and just sits there. SuperCollider itself builds
without issues. I'm running MacOS10.13.6.

-- The C compiler identification is AppleClang 10.0.0.10001145

-- The CXX compiler identification is AppleClang 10.0.0.10001145

-- Detecting C compiler ABI info

-- Detecting C compiler ABI info - done

-- Check for working C compiler:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc
- skipped

-- Detecting C compile features

-- Detecting C compile features - done

-- Detecting CXX compiler ABI info

-- Detecting CXX compiler ABI info - done

-- Check for working CXX compiler:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++
- skipped

-- Detecting CXX compile features

-- Detecting CXX compile features - done

Building SuperColliderAU

-- Found Pthreads: /usr/lib/libpthread.dylib

-- Found homebrew install of libsndfile

-- Using bundled boost

-- Using bundled yaml-cpp

-- HID support disabled