Use $LIBTOOLIZE for better OS X compatibility. With some trivial changes to psp-ports/freetype, it compiles on OS X now, please also check out my pull request there.
Turned off the utility option in OpenAL build script, that is, makehrtf & openal-info. I could not tell any use of these naked MIPS ELFs, except that they lead to a build failure.
Upgrade squirrel from 3.0.2 to 3.0.7, use sourceforge.net as download source because googlecode.com has various connection issues in mainland China :(
libmikmod's configure script will enable the osx driver on Darwin system by default, this will lead to compiling errors when compiling with psp-gcc on Mac OS X.