diff -urp boost_1_48_0~/boost/gil/gil_config.hpp boost_1_48_0/boost/gil/gil_config.hpp
--- boost_1_48_0~/boost/gil/gil_config.hpp	2012-01-16 16:15:29.883239865 +0100
+++ boost_1_48_0/boost/gil/gil_config.hpp	2012-01-16 16:17:49.096243036 +0100
@@ -32,7 +32,7 @@
 #if   defined(_MSC_VER)
 #    define GIL_FORCEINLINE __forceinline
 #elif defined(__GNUC__) && __GNUC__ > 3
-#    define GIL_FORCEINLINE inline __attribute__ ((always_inline))
+#    define GIL_FORCEINLINE inline __attribute__ ((__always_inline__))
 #else
 #    define GIL_FORCEINLINE inline
 #endif