To get a PSP development environment setup (on a GNU UNIX system), grab the "newtoolchain" Perl script from: PSP console dev
You run that, and it downloads, patches, configures and builds all the tools you need. Neat!
There's a bunch of useful stuff at svn://svn.ps2dev.org/
PSPGL OpenGL-ES: OpenGL-ES wrapper around the PSP graphics acceleration
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