--- misc/boost_1_44_0/boost/bind/arg.hpp
+++ misc/build/boost_1_44_0/boost/bind/arg.hpp
@@ -35,6 +35,8 @@
     {
         // static assert I == is_placeholder<T>::value
         typedef char T_must_be_placeholder[ I == is_placeholder<T>::value? 1: -1 ];
+        T_must_be_placeholder dummy; (void) dummy;
+            // silence -Werror=unused-local-typedefs (GCC 4.8)
     }
 };