diff -Naur utils/csv.cc utils/csv.cc
--- utils/csv.cc	2012-03-18 21:10:39.000000000 +0000
+++ utils/csv.cc	2012-05-04 11:06:50.228842822 +0000
@@ -8,6 +8,7 @@
 #include <cstring>
 #include <stdio.h>
 #include <assert.h>
+#include <stdlib.h>
 
 #include "csv.h"
 #include "simstring.h"