this looks quite useful overall.  couple of problems:

	- uses `mkdir -p' which isn't portable

	- "build.sh -m sparc64" seems to be unable to build a 32 bit
	sparc64 system (MACHINE=sparc64, MACHINE_ARCH=sparc) as the
	"-m sparc64" will cause MACHINE_ARCH to be set to sparc64
	unconditionally.


it would also be cool if build.sh did something about objdirs for
you...


.mrg.