Godzil (./4) :
BTW, I'm not sure that GCC is the easyest toolchain to use for such a goal. I think that something like llvm will be really easier to adapt than GCC and will provide much more than GCC is actually capable..

But that's my own opinion.

As cool of a project as LLVM is, I don't believe it has an m68k backend nor is it really mature enough IMO on anything that isn't x86, PPC or Arm to really be of use as a cross compiler as of yet. I looked into it when I was making my Casio Prizm Toolchain but it lacked a SuperH backend so I threw it out right then and there.