--- magnus-20060324.orig/back_end/black_boxes/homology/src/homology/cboundn.c
+++ magnus-20060324/back_end/black_boxes/homology/src/homology/cboundn.c
@@ -36,6 +36,8 @@
 */
 
 #include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
 #include "homcommon.h"
 #include "grpinput.h"
 #include "ndimbdry.h"