[Rivet-svn] rivet: add -Wno-unused-variable if available

[Rivet Mercurial]

details:   https://rivet.hepforge.org/hg/rivet/rev/0f9a3900f942
branches:  release-2-4-x
changeset: 4907:0f9a3900f942
user:      David Grellscheid <david.grellscheid at durham.ac.uk>
date:      Wed Oct 21 21:21:23 2015 +0100
description:
add -Wno-unused-variable if available

diffs (10 lines):

--- a/configure.ac	Wed Oct 21 08:41:11 2015 +0200
+++ b/configure.ac	Wed Oct 21 21:21:23 2015 +0100
@@ -326,6 +326,7 @@
 AC_CEDAR_CHECKCXXFLAG([-Wall], [AM_CXXFLAGS="$AM_CXXFLAGS -Wall"])
 AC_CEDAR_CHECKCXXFLAG([-Wno-long-long], [AM_CXXFLAGS="$AM_CXXFLAGS -Wno-long-long"])
 AC_CEDAR_CHECKCXXFLAG([-Wno-format], [AM_CXXFLAGS="$AM_CXXFLAGS -Wno-format"])
+AC_CEDAR_CHECKCXXFLAG([-Wno-unused-variable], [AM_CXXFLAGS="$AM_CXXFLAGS -Wno-unused-variable"])
 AC_CEDAR_CHECKCXXFLAG([-Werror=uninitialized], [AM_CXXFLAGS="$AM_CXXFLAGS -Werror=uninitialized"])
 AC_CEDAR_CHECKCXXFLAG([-Werror=delete-non-virtual-dtor], [AM_CXXFLAGS="$AM_CXXFLAGS -Werror=delete-non-virtual-dtor"])