"make buildkernel" problems

[Adam K Kirchhoff]

When I run a "make buildkernel" I end up with the following error:

===> dev/disk/aic7xxx
===> dev/disk/aic7xxx/aicasm
make: don't know how to make /usr/include/sys/inttypes.h. Stop
*** Error code 2

I can build the kernel just fine if I run config on the config file and
go through the make depend && make process, but I can't do it with make
buildkernel.

I have run "make includes" in order to make sure all the includes are
properly installed.

Am I missing something?

Adam