patch-xc_mgga.diff

diff --git a/c/xc/xc_mgga.c b/c/xc/xc_mgga.c
index 2abdb9f59..2e3b01f46 100644
--- a/c/xc/xc_mgga.c
+++ b/c/xc/xc_mgga.c
@@ -2,6 +2,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <assert.h>
+#include <xc_config.h>
 #include "xc_mgga.h"
 #include "xc_gpaw.h"