[gegl] Make automake not print non-GNU warnings

[Mukund Sivaraman <muks src gnome org>]

commit 25a24635a7f214e67014212b4c6c88ce5bad0de7
Author: Mukund Sivaraman <muks banu com>
Date:   Tue Aug 30 19:23:21 2011 +0530

    Make automake not print non-GNU warnings

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 97ef76a..8b76348 100644
--- a/configure.ac
+++ b/configure.ac
@@ -129,7 +129,7 @@ AC_SUBST(PACKAGE_NAME)
 
 dnl ==========================================================================
 
-AM_INIT_AUTOMAKE(no-define no-dist-gzip)
+AM_INIT_AUTOMAKE(no-define no-dist-gzip -Wno-portability)
 AM_CONFIG_HEADER(config.h)
 
 dnl Initialize libtool