Incomplete work for using Boost.Polygon to compute medial axis

xs/src/boost/mpl/aux_/config/adl.hpp

@@ -0,0 +1,40 @@
+
+#ifndef BOOST_MPL_AUX_CONFIG_ADL_HPP_INCLUDED
+#define BOOST_MPL_AUX_CONFIG_ADL_HPP_INCLUDED
+
+// Copyright Aleksey Gurtovoy 2002-2004
+//
+// Distributed under the Boost Software License, Version 1.0. 
+// (See accompanying file LICENSE_1_0.txt or copy at 
+// http://www.boost.org/LICENSE_1_0.txt)
+//
+// See http://www.boost.org/libs/mpl for documentation.
+
+// $Id: adl.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
+// $Date: 2008-10-10 23:19:02 -0700 (Fri, 10 Oct 2008) $
+// $Revision: 49267 $
+
+#include <boost/mpl/aux_/config/msvc.hpp>
+#include <boost/mpl/aux_/config/intel.hpp>
+#include <boost/mpl/aux_/config/gcc.hpp>
+#include <boost/mpl/aux_/config/workaround.hpp>
+
+// agurt, 25/apr/04: technically, the ADL workaround is only needed for GCC,
+// but putting everything expect public, user-specializable metafunctions into
+// a separate global namespace has a nice side effect of reducing the length 
+// of template instantiation symbols, so we apply the workaround on all 
+// platforms that can handle it
+
+#if !defined(BOOST_MPL_CFG_NO_ADL_BARRIER_NAMESPACE) \
+    && (   BOOST_WORKAROUND(BOOST_MSVC, BOOST_TESTED_AT(1400)) \
+        || BOOST_WORKAROUND(__BORLANDC__, BOOST_TESTED_AT(0x610)) \
+        || BOOST_WORKAROUND(__DMC__, BOOST_TESTED_AT(0x840)) \
+        || BOOST_WORKAROUND(__MWERKS__, BOOST_TESTED_AT(0x3202)) \
+        || BOOST_WORKAROUND(BOOST_INTEL_CXX_VERSION, BOOST_TESTED_AT(810)) \
+        )
+
+#   define BOOST_MPL_CFG_NO_ADL_BARRIER_NAMESPACE
+
+#endif
+
+#endif // BOOST_MPL_AUX_CONFIG_ADL_HPP_INCLUDED