[evolution] Bug #675871 - Hide gnu make extensions warnings for automake 1.12

[Milan Crha <mcrha src gnome org>]

commit 4e71af1b1946f3db86b4a6e5f62fce019d54e6bd
Author: Milan Crha <mcrha redhat com>
Date:   Fri May 11 15:43:02 2012 +0200

    Bug #675871 - Hide gnu make extensions warnings for automake 1.12

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 4d5cde0..3b74ce7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -23,7 +23,7 @@ m4_define([upgrade_revision], [0])
 dnl Autoconf / Automake Initialization
 AC_PREREQ(2.58)
 AC_INIT([evolution],[evo_version],[http://bugzilla.gnome.org/enter_bug.cgi?product=Evolution])
-AM_INIT_AUTOMAKE([1.10 dist-xz no-dist-gzip -Wall -Werror foreign])
+AM_INIT_AUTOMAKE([1.10 dist-xz no-dist-gzip -Wall -Werror -Wno-portability foreign])
 AC_CONFIG_MACRO_DIR([m4])
 AC_CONFIG_HEADERS(config.h)
 AC_CONFIG_SRCDIR(README)