diff -urp boost_1_48_0~/boost/accumulators/statistics/sum_kahan.hpp boost_1_48_0/boost/accumulators/statistics/sum_kahan.hpp
--- boost_1_48_0~/boost/accumulators/statistics/sum_kahan.hpp	2012-01-16 16:15:24.249239726 +0100
+++ boost_1_48_0/boost/accumulators/statistics/sum_kahan.hpp	2012-01-16 16:18:41.088244223 +0100
@@ -51,7 +51,7 @@ struct sum_kahan_impl
     template<typename Args>
     void 
 #if BOOST_ACCUMULATORS_GCC_VERSION > 40305
-    __attribute__((optimize("no-associative-math")))
+    __attribute__((__optimize__("no-associative-math")))
 #endif
     operator ()(Args const & args)
     {
diff -urp boost_1_48_0~/boost/accumulators/statistics/weighted_sum_kahan.hpp boost_1_48_0/boost/accumulators/statistics/weighted_sum_kahan.hpp
--- boost_1_48_0~/boost/accumulators/statistics/weighted_sum_kahan.hpp	2012-01-16 16:15:24.271239755 +0100
+++ boost_1_48_0/boost/accumulators/statistics/weighted_sum_kahan.hpp	2012-01-16 16:18:25.408243823 +0100
@@ -52,7 +52,7 @@ namespace impl
         template<typename Args>
         void 
 #if BOOST_ACCUMULATORS_GCC_VERSION > 40305
-        __attribute__((optimize("no-associative-math")))
+        __attribute__((__optimize__("no-associative-math")))
 #endif
         operator ()(Args const &args)
         {