Tweaking Kernel Makefile

[Eric Reischer <emr@engr.de.psu.edu>]

If I "tweak" the top-level makefile for a 2.3 kernel to force the ARCH 
variable to be PPC instead of running uname -m, would that produce a 
successful compile for a PowerPC kernel, providing I get the makefiles 
correct?  It seems too easy, and I'm probably wrong, but this seems to be 
the only variable affecting how the kernel is built.

Eric