With the patch in the attached email, I can build much further.
At this point, the problems are newlib and libgloss.  newlib's
libc/machine/pa assembly code uses subspa directives and 
libgloss has a Makefile problem where it reports not having 
a target.

My PA assembly language is WAY too rusty to attempt to fix 
newlib at this point.  So please review and commit the
attached patch to the 3.1 and main trunks.  This will close
PR6455.

-- 
Joel Sherrill, Ph.D.             Director of Research & Development
joel@OARcorp.com                 On-Line Applications Research
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