Hi,

Another patch I had here laying around, from my recent all-targets
excursions.

Pre auto-dependencies, gnu-nat.o had these, among others, in its
dependency list:

gnu-nat.o: ... $(exc_request_S_h) $(notify_S_h) $(process_reply_S_h) \
        $(msg_reply_S_h) $(exc_request_U_h) $(msg_U_h)

But, we no longer specify those explicit dependencies, so
currently, the build fails when trying to compile gnu-nat.c, claiming
exc_request_S.h, etc, are nowhere to be found.

These are generated headers, built from the corresponding .defs files in
the tree.  Their build rules are in config/i386/i386gnu.mh.

With this patch I was able to build GDB on i686-unknown-gnu0.3 again
successfully.

Is this the right approach?  If so, OK?

-- 
Pedro Alves