--- src/const_str.hh.orig	2008-06-08 17:33:33.000000000 +0200
+++ src/const_str.hh	2008-06-08 17:33:46.000000000 +0200
@@ -24,6 +24,7 @@
 #ifndef lavaps_const_str_h
 #define lavaps_const_str_h
 
+#include <cstdlib>
 #include <string.h>
 
 class const_str {