probs re-building lib makefiles (2.95.2) - how to?

[Gary Funck]

I can build 2.95.2 from scratch w/out probs.  I moved my development
directory (renamed it), and this caused some makefile/config grief,
so I re-ran configure, and then re-ran make, but ran into the following
error:

gmake[2]: Entering directory `/upc/upcsgi/mips-sgi-irix6.5/libiberty'
gmake[2]: *** No targets specified and no makefile found.  Stop.
gmake[2]: Leaving directory `/upc/upcsgi/mips-sgi-irix6.5/libiberty'

Are Makefiles in sub-directories usually built by "configure", or
by the top-level make?

Is there a quick/easy way to manually rebuild a Makefile in one of
the library directories (I notice libstdc++ is missing one also)?

Should I try "make clean" and then "configure" to fix the problem,
or start from scratch?

thanks.