--- branches/development/src/optimization/LineSearch.cpp	2012/06/05 18:02:44	1741
+++ branches/development/src/optimization/LineSearch.cpp	2013/03/06 16:24:08	1853
@@ -21,6 +21,7 @@
 #include "optimization/Problem.hpp"
 #include "optimization/Constraint.hpp"
 #include "utils/simError.h"
+#include <cstdio>
 
 namespace QuantLib {