- From this version onwards, Scyther no longer supports the modelchecker

method. A big cleanup has been started, but is not finished yet, so
  minor artefacts might still remain. These are to be cleaned up later.

src/depend.c

@@ -4,6 +4,8 @@
  *
  */
 
+#include <stdlib.h>
+#include <string.h>
 #include "depend.h"
 #include "term.h"
 #include "system.h"