diff -Nru SimGear-1.9.1.orig/simgear/debug/logstream.hxx SimGear-1.9.1/simgear/debug/logstream.hxx
--- SimGear-1.9.1.orig/simgear/debug/logstream.hxx	2009-01-25 13:00:32.000000000 +0100
+++ SimGear-1.9.1/simgear/debug/logstream.hxx	2009-05-04 13:01:39.000000000 +0200
@@ -33,6 +33,7 @@
 
 #include <streambuf>
 #include <ostream>
+#include <cstdio>
 
 #include <simgear/debug/debug_types.h>