Index: boost/wave/preprocessing_hooks.hpp
===================================================================
--- boost/wave/preprocessing_hooks.hpp	(revision 82859)
+++ boost/wave/preprocessing_hooks.hpp	(working copy)
@@ -13,6 +13,7 @@
 
 #include <boost/wave/wave_config.hpp>
 #include <boost/wave/util/cpp_include_paths.hpp>
+#include <boost/wave/cpp_exceptions.hpp>
 
 #include <vector>