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

[Milan Crha <mcrha src gnome org>]

commit f763d702c6553b71c192619c4de611e36a45f5a3
Author: Milan Crha <mcrha redhat com>
Date:   Fri May 11 15:44:57 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 3a13820..8f0179c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -6,7 +6,7 @@ m4_define([ema_version], [3.5.2])
 
 AC_PREREQ(2.58)
 AC_INIT([evolution-mapi], [ema_version], [http://bugzilla.gnome.org/browse.cgi?product=evolution-mapi])
-AM_INIT_AUTOMAKE([gnu 1.9 dist-xz no-dist-gzip])
+AM_INIT_AUTOMAKE([gnu 1.9 dist-xz no-dist-gzip -Wno-portability])
 AC_CONFIG_SRCDIR(README)
 AC_CONFIG_HEADERS(config.h)