Question about "native" compiling

[Bruce_Leonard at selinc.com]

Hi all,

I apologize if the list finds this off topic, but I'm at a loss of who to 
ask the question and thought this would be a good place to start.  Our 
target is an MPC8347E PowerQUICC II Pro, and we're using the latest kernel 
(2.6.25).  We started this project by building on x86 and doing 
cross-compiling to the powerpc target.  As the project progressed and we 
started adding applications we found that we couldn't cross-compile 
postgress among other things.  So we switched to native compilation on the 
target.  Problem is, it's extreamly slow.  Now our idea is to get our 
hands on a PowerPC based Mac, load it up with Ubuntu and do native builds 
on that.  The question is, which Mac to get?  The concern is this: a G5 is 
64-bit but the 8347E is 32-bit.  If we do our compiles on a G5 is it 
really a 'native' compile or is it a cross-compile and we're back in the 
same boat as we were with the x86?  Should we use a G4 instead?

Thanks for any advice or pointers to other places where I can find 
information.

Bruce