I've used crosstool-0.38 to generate an ARMv5b cross compiler and then the script referenced from the link below to create the native GCC from the cross compiler. It should really be not much different to make a PPC native platform. I hope you have a fast machine.. It takes a while.
http://sources.redhat.com/ml/crossgcc/2005-08/msg00037.html
Ryan Wilkins
On Oct 28, 2005, at 11:55 AM, Jeff Stevens wrote:
I am trying to compile GCC on an x86 platform to
run natively on an embedded PPC platform. I am able
to compile gcc as a cross compiler (to run on x86),
but can't seem to get it to cross compile gcc (to run
on ppc). Does anyone know of a good HowTo to do this?
I'm currently downloading the source distro of ELDK,
so if it's already in there I'll find it, but if there
is one elsewhere online please let me know.