--- lib/m4sugar/m4sugar.m4.orig	Sun Apr  6 01:04:48 2008
+++ lib/m4sugar/m4sugar.m4	Thu Aug 14 17:01:04 2008
@@ -1566,6 +1566,7 @@ m4_define([m4_expand_once],
 m4_define([m4_provide],
 [m4_define([m4_provide($1)])])
 
+m4_provide([AM_SANITY_CHECK])
 
 # m4_provide_if(MACRO-NAME, IF-PROVIDED, IF-NOT-PROVIDED)
 # -------------------------------------------------------