To build on Mac OS, looks like all you need do,from the mh_phoenix dir, is
open a terminal (Apps -> Utils -> Terminal, I think) and
cd to the working copy dir , then enter either
sh compile_src_osx.sh or make -f Makefile_osx. these are equivalent commands.
I'm guessing the glut, opengl, carbon and Appkit libraries are already there
Hope this helps...
a_l