--- src/libnr/nr-matrix.cpp.org	2008-04-02 22:01:32.000000000 +0200
+++ src/libnr/nr-matrix.cpp	2008-04-02 22:01:54.000000000 +0200
@@ -11,6 +11,7 @@
  * This code is in public domain
  */
 
+#include <cstdio>
 #include <cstdlib>
 #include "nr-matrix.h"