Re: subdir/toplevel dependence (was Re: (toplevel)...)

[Alexandre Oliva <aoliva@redhat.com>]

On Dec 30, 2002, Nathanael Nerode <neroden@twcny.rr.com> wrote:

> I put this in because there's a real dependence here. :-(

Thanks, I see it now.  It just happened to trigger other unwanted
dependencies, that I really disliked.  Well, guess we'll have to put
them back in, but perhaps we can be more clever.

The idea is to force sub-configures to run whenever we run the
top-level configure, but if it's rerun just because the top-level
configure was updated, we don't have to rerun sub-configures, right?
That's the way it used to be.

The solution I see is to arrange for configure to remove sub-Makefiles
if it is run without --no-recursion (i.e., no_recursion != yes).
Then, the check for sub-Makefile in the configure-* targets will take
care of reconfiguring.  How does this sound?

-- 
Alexandre Oliva   Enjoy Guarana', see http://www.ic.unicamp.br/~oliva/
Red Hat GCC Developer                 aoliva@{redhat.com, gcc.gnu.org}
CS PhD student at IC-Unicamp        oliva@{lsd.ic.unicamp.br, gnu.org}
Free Software Evangelist                Professional serial bug killer