[clutter-gtk] build: Depend on Clutter ≥ 1.18

[Emmanuele Bassi <ebassi src gnome org>]

commit 85f3edc3064bdc54cbe7172f5459559c5abcf3df
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Thu Aug 21 15:41:09 2014 +0100

    build: Depend on Clutter ≥ 1.18

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 7c68623..4c0c278 100644
--- a/configure.ac
+++ b/configure.ac
@@ -82,7 +82,7 @@ AC_HEADER_STDC
 AC_CHECK_LIBM
 AC_SUBST(LIBM)
 
-m4_define([clutter_req_version], [1.15.1])
+m4_define([clutter_req_version], [1.18.0])
 m4_define([gtk_req_version], [3.6.0])
 
 PKG_CHECK_MODULES([CLUTTER_GTK_DEPS], [clutter-1.0 >= clutter_req_version gtk+-3.0 >= gtk_req_version])