[yoda-svn] yoda: add -Wno-unused-variable if available

[YODA Mercurial]

details:   https://yoda.hepforge.org/hg/yoda/rev/4fd604e36db2
branches:  
changeset: 1159:4fd604e36db2
user:      David Grellscheid <david.grellscheid at durham.ac.uk>
date:      Wed Oct 21 21:13:26 2015 +0100
description:
add -Wno-unused-variable if available

diffs (10 lines):

--- a/configure.ac	Wed Oct 07 14:38:27 2015 +0100
+++ b/configure.ac	Wed Oct 21 21:13:26 2015 +0100
@@ -76,6 +76,7 @@
 AC_CEDAR_CHECKCXXFLAG([-pedantic], [AM_CXXFLAGS="$AM_CXXFLAGS -pedantic"])
 AC_CEDAR_CHECKCXXFLAG([-Wall], [AM_CXXFLAGS="$AM_CXXFLAGS -Wall -Wno-format"])
 dnl AC_CEDAR_CHECKCXXFLAG([-std=c++98], [AM_CXXFLAGS="$AM_CXXFLAGS -std=c++98"])
+AC_CEDAR_CHECKCXXFLAG([-Wno-unused-variable], [AM_CXXFLAGS="$AM_CXXFLAGS -Wno-unused-variable"])
 
 ## Debug flag (default=none)
 AC_ARG_ENABLE([debug], [AC_HELP_STRING(--enable-debug, [build with debugging symbols  @<:@default=no@:>@])], [], [enable_debug=no])