When I use the new "build" target in /usr/src/Makefile, it prints out
the following:
	(cd include && make install)
	cd: can't cd to include
	*** Error code 2

	Stop.
 
It turns out that I have a /usr/src/obj directory (which /usr/obj is a
symbolic link to), and when I change the command line to include "pwd",
I get:
	(pwd && cd include && make install)
	/usr/src/obj
	cd: can't cd to include
	*** Error code 2

	Stop.

I have 28MB free on /usr, and 108MB free on /usr/src.  I guess I can
rename /usr/src/obj easily enough, so I will, but I wonder if there is
any way to keep make from descending into /usr/src/obj by default.