[gtkglarea] configure.ac: store m4 files in m4/ directory

[Javier Jardón <jjardon src gnome org>]

commit 0c65f6ce5c09428bbb5424e9f41d9d7663a11bda
Author: Javier Jardón <jjardon gnome org>
Date:   Thu Feb 27 02:35:29 2014 +0000

    configure.ac: store m4 files in m4/ directory

 autogen.sh   |    1 +
 configure.ac |    3 +++
 2 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/autogen.sh b/autogen.sh
index ee150f1..6823904 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -13,6 +13,7 @@ if test -z $AUTORECONF; then
         exit 1
 fi
 
+mkdir -p m4
 autoreconf --force --install --verbose || exit $?
 
 cd $OLDDIR
diff --git a/configure.ac b/configure.ac
index ec0070c..9a4b0b5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,7 +1,10 @@
 dnl Process this file with autoconf to produce a configure script.
 AC_INIT(gtkgl, 2.0.2)
+
 AC_CONFIG_AUX_DIR(.auto)
 AC_CONFIG_HEADER(config.h)
+AC_CONFIG_MACRO_DIR([m4])
+
 AM_INIT_AUTOMAKE([no-define])
 AM_MAINTAINER_MODE([enable])