On 18 Apr 2001 eeh@netbsd.org wrote:

	> 		It would seem that the vast majority of Makefiles should be able
	> 		to share on ${MACHINE_ARCH}. Would it make sense to have the
	> 		default be ${MACHINE_ARCH} and override to ${MACHINE}?
	>
	> This would break on sparc ports, where MACHINE is either `sparc' or
	> `sparc64' depending on the CPU and MACHINE_ARCH is either `sparc' or
	> `sparc64' depending on the ABI in use.
	>
	> I suppose we could change the 64-bit MACHINE_ARCH to `sparcv9' but
	> that would cause certain disruption.

		Just to confirm - on sparc64 the sparc/sparc64 ABI applies to the
		entire tree? If so then wouldn't it work unless you're sharing an obj
		tree between sparc64 in 32bit mode and sparc64 in 64bit mode?
		(Assuming a given dir does not have MACHINE_ARCH and MACHINE obj
		dirs)

The objdir should be shared between sparc and sparc64 running 32-bit mode.
Right now it's shared between 32-bit and 64-bit sparc64 which breaks because
the formats are different.

Eduardo