Index: compiler/gcc.hpp
===================================================================
--- compiler/gcc.hpp	(revision 66532)
+++ compiler/gcc.hpp	(working copy)
@@ -232,7 +232,7 @@
 #endif
 //
 // last known and checked version is 4.4 (Pre-release):
-#if (__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ > 4))
+#if (__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ > 5))
 #  if defined(BOOST_ASSERT_CONFIG)
 #     error "Unknown compiler version - please run the configure tests and report the results"
 #  else
Index: suffix.hpp
===================================================================
--- suffix.hpp	(revision 66483)
+++ suffix.hpp	(working copy)
@@ -643,5 +643,19 @@
 #  ifndef BOOST_GPU_ENABLED
 #  define BOOST_GPU_ENABLED 
 #  endif
+
+//
+// constexpr workarounds
+// 
+#if defined(BOOST_NO_CONSTEXPR)
+#define BOOST_CONSTEXPR
+#define BOOST_CONSTEXPR_OR_CONST const
+#else
+#define BOOST_CONSTEXPR constexpr
+#define BOOST_CONSTEXPR_OR_CONST constexpr
 #endif
 
+#define BOOST_STATIC_CONSTEXPR  static BOOST_CONSTEXPR_OR_CONST
+
+#endif
+