A quick note for all 10.6 users that still have a 32 bit machine (like old MacBookPro and MacMinis based on Core Duo cpus).
If you already have built SDLMAME on your Mac you should have Clang 3.7 installed, therefore the make command must be the following:
make CC="clang-mp-3.7" CXX="clang++-mp-3.7" LINK="clang++-mp-3.7" PHONON=0
otherwise with a simple "make" command the build will stop at the beginning.
When the compile is complete you can do the usual final step:
That's all! :-)