Cross compile? / SDL_Image IRIX

Has anyone ever cross-compiled from linux to MacOS (9.1) or from Win32 to
MacOS (9.1). If I understand correctly you can cross compile for Mac with the
WIn32 version of CodeWarrior. But I haven’t heard of anything else. I would
like to try writting SDL on every platform I have access to, but for Mac’s I
don’t have a machine or a compiler.

Second question is:
Has anyone successfully compiled the latest SDL_Image for IRIX? I’m getting
errors and perhaps I’m in need of something. ./configure works fine but when
I run make it stops and complains about a function call pertaining to libPNG.
Which is unfortunate because that’s the only reason I want it.