> Would you mind adding a comment to aix432.mh which indicates that
> aix-thread.o is pulled in via configure?

Sure, I made the following change (head and branch):

2002-12-02  J. Brobecker  <brobecker@gnat.com>

        * config/powerpc/aix432.mh (NATDEPFILES): Add a comment explaining
        why aix-thread.o is not listed.

Let me know if any adjustment is needed.

-- 
Joel