[clutter] cogl/configure.ac: AC_SUBST an empty MAINTAINER_CFLAGS

[Robert Bragg <rbragg src gnome org>]

commit f2cd2d8be847681d81a3864e2ac3fee2917a273c
Author: Robert Bragg <robert linux intel com>
Date:   Tue Apr 19 17:47:57 2011 +0100

    cogl/configure.ac: AC_SUBST an empty MAINTAINER_CFLAGS
    
    For compatibility with the way we build Cogl as part of Clutter we now
    substitute an empty MAINTAINER_CFLAGS variable. When building Cogl
    standalone all our extra CFLAGS go through COGL_EXTRA_CFLAGS so the
    separate MAINTAINER_CFLAGS aren't used, but automake will get confused
    if a substitution isn't made.

 clutter/cogl/configure.ac |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
---
diff --git a/clutter/cogl/configure.ac b/clutter/cogl/configure.ac
index b23ce32..c982156 100644
--- a/clutter/cogl/configure.ac
+++ b/clutter/cogl/configure.ac
@@ -704,6 +704,10 @@ AC_SUBST(COGL_DEP_LIBS)
 AC_SUBST(COGL_EXTRA_CFLAGS)
 AC_SUBST(COGL_EXTRA_LDFLAGS)
 
+# just for compatability with the clutter build...
+MAINTAINER_CFLAGS=
+AC_SUBST(MAINTAINER_CFLAGS)
+
 AC_OUTPUT(
 Makefile
 cogl/Makefile