[RFC] Move --enable-languages logic to the toplevel

[Geoff Keating]

"Zack Weinberg" <zack@codesourcery.com> writes:

> Paolo Bonzini <paolo.bonzini@polimi.it> writes:
> 
> >> This patch looks plausible.  You should test the toplevel configure in
> >> a binutils tree, to make sure it behaves sensibly when there is no gcc
> >> subdirectory.
> >
> > Needless to say, it does not (it works, but passes a bogus
> > --enable-languages=c option).  I will add a revised patch to the
> > (already long) queue of patches waiting for the copyright assignment
> > form to reach me. :-( In the meanwhile I created PR14131 and
> > assigned it to me.
> 
> Understood.  In the meantime, I think it would be a good idea to
> disable Ada by default on the mainline, so that people without an Ada
> bootstrap compiler handy are not unexpectedly burnt by this problem.
> Those who intend to build Ada can specify --enable-languages=ada.
> Thoughts?

Works for me.

-- 
- Geoffrey Keating <geoffk@geoffk.org>