GNU bug report logs - #9106
24.0.50; ./configure causes massive recompilation

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From: "Ralf Wildenhues" <Ralf.Wildenhues <at> gmx.de>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 9106 <at> debbugs.gnu.org, Paul Eggert <eggert <at> cs.ucla.edu>, bug-gnulib <at> gnu.org
Subject: bug#9106: 24.0.50; ./configure causes massive recompilation
Date: Wed, 20 Jul 2011 08:44:04 +0200

Hello,

* Eli Zaretskii wrote on Wed, Jul 20, 2011 at 08:29:38AM CEST:
> > From: Paul Eggert <eggert <at> cs.ucla.edu>
> 
> > And this would occur every time one does a 'make', even when there's
> > no real work to do.
> 
> This occurs already: these headers are regenerated every time I re-run
> the `configure' script.

Yes, but 'make' is run a lot more often than 'configure' in some
workflows.  I think one implicit gnulib expectation is that configure
is not run often.  (FWIW I don't agree, because if your source tree
is several times larger than your gnulib extract, then it really matters
whether you need to rebuild the world even rarely.)

I proposed using stamp files before, but there are (understandable)
reservations against them.

Cheers,
Ralf

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