compiling it yourself isn't that difficult, but you could try out MAME OSX. Not quite up to date (based on MAME 0.135) and I have noticed performance issues with CPS3 games (street fighter 3), but anything else worked fine for me.
http://mameosx.sourceforge.net/
if you still want to try compiling it yourself, here's a helpful guide:
http://forums.bannister.org/ubbthreads.php?ubb=showflat&Number=58111#Post58111
still works with MAME 0.141