kaisersoze has posted some more news of his port of MAME to the Iphone:

OK looks like I can work around that by replacing that library with the actual one on the iPhone. Alright, back to working on the actual project!

Games feel faster after recompiling with new toolchain. Currently working on porting MAME 0.62.

Of course, now the compiler is crashing when trying to compile the Z80 CPU, which is only used in obscure games like Pacman and Galaga.