--- cfg.cpp	2008-03-20 17:56:19.000000000 +0100
+++ slim-1.3.0/cfg.cpp	2008-03-20 17:55:53.000000000 +0100
@@ -12,6 +12,7 @@
 #include <string>
 #include <iostream>
 #include <unistd.h>
+#include <cstdlib>
 
 #include <sys/types.h>
 #include <sys/stat.h>