How do I build cross-tools using our in-tree binutils, etc?

I've configured and started to build a cross-egcs, but I'm having trouble
w/ binutils. If I run /usr/src/gnu/dist/binutils/configure
--target=m68k-netbsd at some place in the tree, and then do a make, I get
errors about not being able to include ../bfd/bfd.h. ??

Also, are all architectures using the in-tree tools?

Take care,

Bill