[Dune-devel] AC_REQUIRE for metis check

Martin Nolte nolte at mathematik.uni-freiburg.de
Wed Jan 30 08:51:46 CET 2013

Hi Dune,

the log entry for r6874 of dune-common (July 2012) states, that you may not 
AC_REQUIRE the metis check as it would hold configure on failure:

r6874 | mblatt | 2012-07-26 21:49:02 +0200 (Thu, 26 Jul 2012) | 3 lines

Slightly modified patch by Andreas Lauser. (requiring metis is an
error as it would have halted configure)

Looking into the m4 script, this does not seem to be true; the default 
behavior is to just warn in this case. This is confirmed by the log entry for 
revision 3443 (November 2005!):

r3443 | mblatt | 2005-11-16 14:43:49 +0100 (Wed, 16 Nov 2005) | 2 lines

Default is niw to warn if metis is mot present.

Before messing anything up, I would like to know whether you may or may not 
AC_REQUIRE the metis check. If you may not, I would like to know how we are 
going to avoid calling this check multiple times (in one configure, of course).

Thanks for any help.



Dr. Martin Nolte <nolte at mathematik.uni-freiburg.de>

Universität Freiburg                                   phone: +49-761-203-5630
Abteilung für angewandte Mathematik                    fax:   +49-761-203-5632
Hermann-Herder-Straße 10
79104 Freiburg, Germany

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