I've downloaded the latest 0.103u2 source code, compiled it with XCode, gcc 4.0.1 (PPC).
When I compile MacMame in "Release" mode and run Virtua Fighter (vf.zip), the game doesn't seem to start. I get the warning screen, ROM info screen, and then just a blank screen. When I compile MacMame in "Debug" mode, running VF yields the warning screen, ROM info screen, and then the MAME debugger pops up and breaks at some address (I can provide more detailed info if anyone is interested.)
A curious thing is that the binary provided on the MacMame site (same version) runs VF just fine! (save the game's usual slowness under MAME).
I tested other Model 1 games (Virtua Racing), and I get exactly the same behaviour as VF.
Is this a known issue, or am I doing something horribly wrong?