diff --git a/lemon/config.h.in b/lemon/config.h.in
--- a/lemon/config.h.in
+++ b/lemon/config.h.in
@@ -18,3 +18,6 @@
 
 /* Define to 1 if you have CLP */
 #undef HAVE_CLP
+
+/* Define to 1 if you have CBC */
+#undef HAVE_CBC