diff -urNad osm2pgsql-0.50.20071211.orig/build_geometry.cpp osm2pgsql-0.50.20071211/build_geometry.cpp
--- osm2pgsql-0.50.20071211.orig/build_geometry.cpp	2008-04-09 00:55:47.000000000 +0100
+++ osm2pgsql-0.50.20071211/build_geometry.cpp	2008-04-09 00:55:57.000000000 +0100
@@ -22,6 +22,7 @@
 
 #include <iostream>
 #include <cstring>
+#include <cstdlib>
 
 #include <geos_c.h>