From d9eb4702b22e55a8bcccfcede7a371da7131c7ad Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Florian=20M=C3=BCllner?= <fmuellner@gnome.org>
Date: Fri, 9 Jul 2010 05:47:27 +0200
Subject: [PATCH] [configure] Check that mutter was compiled with GTK+-3.0

If mutter was compiled with GTK+-2.0, the build will fail with a
rather cryptic message - better fail early during configure with
a proper error message.

https://bugzilla.gnome.org/show_bug.cgi?id=623889
---
 configure.ac | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/configure.ac b/configure.ac
index fe5f09a72..2718d8e87 100644
--- a/configure.ac
+++ b/configure.ac
@@ -154,6 +154,14 @@ changequote([,])dnl
 AC_PATH_PROG(mutter, [mutter])
 AC_SUBST(mutter)
 
+AC_MSG_CHECKING([if mutter was compiled with GTK+-3.0])
+if $PKG_CONFIG --print-requires libmutter-private | grep -q gtk+-3; then
+  AC_MSG_RESULT(yes)
+else
+  AC_MSG_RESULT(no)
+  AC_MSG_ERROR([GNOME Shell requires Mutter to be compiled against GTK+-3.0])
+fi
+
 AC_CONFIG_FILES([
   Makefile
   data/Makefile