>	* install $(MACHINE_ARCH) includes as /usr/include/machine
>	* install all of the $(MACHINE) variants in /usr/include
>	* for user programs which have /usr/include/$(MACHINE)
>	  dependencies, make them code for that explicitly.

>Actually, the more that I think about it, the more
>/usr/include/machine/$(MACHINE) makes sense to me, rather than totally
>littering /usr/include with $(MACHINE)-named subdirs...

Works for me - though I'm not the one doing it :-)

--sjg