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

[Milan Crha <mcrha src gnome org>]

commit 1048eda4fff96eaf1d8f7dc150ab90a31be81429
Author: Milan Crha <mcrha redhat com>
Date:   Fri May 11 15:41:29 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 a34f442..4683f5b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,7 +1,7 @@
 dnl Initialization
 AC_PREREQ(2.58)
 AC_INIT([gtkhtml], [4.5.2], [http://bugzilla.gnome.org/enter_bug.cgi?product=GtkHtml])
-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_MACRO_DIR([m4])
 AC_CONFIG_HEADERS(config.h)
 AC_CONFIG_SRCDIR(README)