> It is probably related to some recent change in
> the top level configure...
It seems so indeed.
> I have no clue if and how this should be fixed.
> Especially as top Makefile contains the lines:
> 691-# We leave this in just in case, but it is not needed anymore.
> 692:RECURSE_FLAGS_TO_PASS = $(BASE_FLAGS_TO_PASS)
The top-level configure is maintained by GCC, so hopefully someone
on the GCC list would be able to give us a hint?