diff -urp boost_1_48_0~/boost/config/compiler/gcc.hpp boost_1_48_0/boost/config/compiler/gcc.hpp
--- boost_1_48_0~/boost/config/compiler/gcc.hpp	2012-01-16 16:15:14.643239525 +0100
+++ boost_1_48_0/boost/config/compiler/gcc.hpp	2012-01-16 16:21:24.072247987 +0100
@@ -120,13 +120,13 @@
      // _WIN32 or one of its variant spellings. Note that Cygwin is a POSIX environment,
      // so does not define _WIN32 or its variants.
 #    define BOOST_HAS_DECLSPEC
-#    define BOOST_SYMBOL_EXPORT __attribute__((dllexport))
-#    define BOOST_SYMBOL_IMPORT __attribute__((dllimport))
+#    define BOOST_SYMBOL_EXPORT __attribute__((__dllexport__))
+#    define BOOST_SYMBOL_IMPORT __attribute__((__dllimport__))
 #  else
-#    define BOOST_SYMBOL_EXPORT __attribute__((visibility("default")))
+#    define BOOST_SYMBOL_EXPORT __attribute__((__visibility__("default")))
 #    define BOOST_SYMBOL_IMPORT
 #  endif
-#  define BOOST_SYMBOL_VISIBLE __attribute__((visibility("default")))
+#  define BOOST_SYMBOL_VISIBLE __attribute__((__visibility__("default")))
 #else
 // config/platform/win32.hpp will define BOOST_SYMBOL_EXPORT, etc., unless already defined  
 #  define BOOST_SYMBOL_EXPORT