diff -ur root/mathcore/inc/Math/Minimizer.h root-patched/mathcore/inc/Math/Minimizer.h
--- root/mathcore/inc/Math/Minimizer.h	2008-05-29 10:59:38.000000000 -0400
+++ root-patched/mathcore/inc/Math/Minimizer.h	2008-06-11 23:36:33.000000000 -0400
@@ -22,6 +22,8 @@
 
 #include <limits> 
 
+#include <string>
+
 //#define DEBUG
 #ifdef DEBUG
 #include <iostream>