--- ginac-1.5.1.org/ginac/parser/lexer.cpp	2009-03-16 22:04:09.000000000 +0530
+++ ginac-1.5.1/ginac/parser/lexer.cpp	2009-03-16 22:04:30.000000000 +0530
@@ -23,6 +23,7 @@
 #include "lexer.h"
 #include "compiler.h"
 
+#include <cstdio>
 #include <iostream>
 #include <sstream>
 #include <string>