From Mathias Froehlich, "I did some performance test runs with the development gcc-4.4 version.

To make it compiel with future gcc's we sppear to need the attached missing
includes ..."

examples/osgmultiplerendertargets/osgmultiplerendertargets.cpp

@@ -33,6 +33,7 @@
 #include <osgViewer/Viewer>
 
 #include <iostream>
+#include <stdio.h>
 
 //
 // Below is relatively straight forward example of use OpenGL multiple render targets extension

src/osgDB/FieldReader.cpp

@@ -12,6 +12,7 @@
 */
 #include <osgDB/Field>
 #include <osgDB/FieldReader>
+#include <stdio.h>
 
 using namespace osgDB;