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Re: Ignore setting of EMACS environment variable?

From: Eric Blake
Subject: Re: Ignore setting of EMACS environment variable?
Date: Tue, 28 Jun 2011 15:49:43 -0600
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On 06/28/2011 03:39 PM, Reuben Thomas wrote:
> Should autoconf not ignore the EMACS environment variable so one
> doesn't get errors like this:
> configure: loading site script /home/rrt/.config.site
> configure: loading cache /home/rrt/local/i686/var/config.cache
> configure: error: `EMACS' was not set in the previous run
> configure: error: in `/home/rrt/Software/zile-stable':
> configure: error: changes in the environment can compromise the build
> configure: error: run `make distclean' and/or `rm
> /home/rrt/local/i686/var/config.cache' and start over

If EMACS is marked precious, then this is perfectly valid behavior of
autoconf.  The question is who is marking it precious (that is, using
AC_ARG_VAR([EMACS]) in some form, so that ./configure --help lists
$EMACS as one of the variables that affects configure operation).
Nothing in the autoconf manual documents the use of EMACS, nor did I
find any evidence of EMACS being used in autoconf source code, so this
is probably something in your configure.ac and not in autoconf itself.

Eric Blake   address@hidden    +1-801-349-2682
Libvirt virtualization library http://libvirt.org

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