--- win32.hpp.orig	2012-10-03 10:59:24 +0200
+++ win32.hpp	2012-09-18 16:44:38 +0200
@@ -33,7 +33,9 @@
 
 #if defined(__MINGW32__) && ((__MINGW32_MAJOR_VERSION > 2) || ((__MINGW32_MAJOR_VERSION == 2) && (__MINGW32_MINOR_VERSION >= 0)))
 #  define BOOST_HAS_STDINT_H
-#  define __STDC_LIMIT_MACROS
+#  if !defined(__STDC_LIMIT_MACROS)
+#    define __STDC_LIMIT_MACROS
+#  endif
 #  define BOOST_HAS_DIRENT_H
 #  define BOOST_HAS_UNISTD_H
 #endif