MacOS high sierra doesn't support gcc47 compiler

Hi,

I have a problem with installing triplexator on macOS 10.13 because the gcc47 compiler has been deprecated in newer OS versions. I get the following error:

dyld: Library not loaded: /opt/local/lib/gcc47/libgomp.1.dylib
Referenced from: /Users/xyz/tools/triplexator-1.3.2-Darwin/bin/triplexator
Reason: image not found