First, are there OSX binaries somewhere so I don't have to do this at all? Assuming no, I tried to build with gcc (Homebrew gcc 4.9.2_1) 4.9.2 On Mac OSX Yosemite 10.10.3 but got this error from make: Undefined symbols for architecture x86_64: "_esp_shutdown", referenced from: _oncp_mainloop in libopenconnect_la-oncp.o ld: symbol(s) not found for architecture x86_64 Thanks! Phil --