diff -Naur HippoDraw-1.21.3/reps/AxisRepBase.cxx HippoDraw-1.21.3.new/reps/AxisRepBase.cxx
--- HippoDraw-1.21.3/reps/AxisRepBase.cxx	2007-07-02 14:17:16.000000000 -0400
+++ HippoDraw-1.21.3.new/reps/AxisRepBase.cxx	2009-11-12 22:03:11.000000000 -0500
@@ -30,6 +30,7 @@
 
 #include <cmath>
 #include <cassert>
+#include <cstdio>
 
 using std::max;
 using std::min;