Try this,

>> Makefile.in to read something like:
>> 	all-sim: configure-sim configure-gdb
>> and that fixed the problem.  (But I'm not sure how to do this from scratch).
> 
> 
> That line should be identical between Makefile.tpl and Makefile.in.
> You should be able to hand-tweak them both.
> 
> If you want to post a patch, I'll apply it.  Please include
> gcc-patches@gcc.gnu.org so I can do that side also.

I think I found the right place.  Andrew