--- lavaps-2.7/src/const_str.hh	2003-06-22 18:35:19.000000000 -0700
+++ lavaps-2.7/src/const_str.hh.new	2008-12-04 11:44:43.000000000 -0800
@@ -25,6 +25,7 @@
 #define lavaps_const_str_h
 
 #include <string.h>
+#include <cstdlib>
 
 class const_str {
 protected: