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Re: [PATCH] AC_CONFIG_MACRO_DIRS: improve tracing and add sanity checks

From: Adrian Bunk
Subject: Re: [PATCH] AC_CONFIG_MACRO_DIRS: improve tracing and add sanity checks
Date: Tue, 13 Nov 2012 00:01:12 +0200
User-agent: Mutt/1.5.21 (2010-09-15)

On Mon, Nov 12, 2012 at 03:40:50PM -0500, Nick Bowler wrote:
> But I still maintain that it is much easier to not make any changes
> whatsoever to AC_CONFIG_MACRO_DIR: i.e., do nothing.

We must not force all users to update their only because 
they updated autoconf/automake/libtool.

That would extremely annoy everyone using autoconf/automake/libtool.

And for a distribution like Debian where over 800 packages have a build 
dependency on libtool (usually calling libtoolize at package build time)
that could also cause problems.

If libtool will get the information in a different way, then that new 
way must return the same information - and that implies that autoconf 
now has to do something with AC_CONFIG_MACRO_DIR.

If there is no proper solution to handle multiple AC_CONFIG_MACRO_DIR in 
a backwards-compatible way, then a clear failure is at least better than 
silently changed behavior. On a positive side, multiple 
AC_CONFIG_MACRO_DIR doesn't seem to be that common in existing usage.



       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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