ndnboost: Include boost::iostreams for internal use.
diff --git a/include/ndnboost/iostreams/detail/config/dyn_link.hpp b/include/ndnboost/iostreams/detail/config/dyn_link.hpp
new file mode 100644
index 0000000..e8d922f
--- /dev/null
+++ b/include/ndnboost/iostreams/detail/config/dyn_link.hpp
@@ -0,0 +1,37 @@
+// (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com)
+// (C) Copyright 2003-2007 Jonathan Turkanis
+// 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/iostreams for documentation.
+
+// Adapted from http://www.boost.org/more/separate_compilation.html, by
+// John Maddock.
+
+#ifndef NDNBOOST_IOSTREAMS_DETAIL_CONFIG_DYN_LINK_HPP_INCLUDED
+#define NDNBOOST_IOSTREAMS_DETAIL_CONFIG_DYN_LINK_HPP_INCLUDED
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+#include <ndnboost/config.hpp>
+#include <ndnboost/detail/workaround.hpp>
+
+//------------------Enable dynamic linking on windows-------------------------//
+
+#ifdef NDNBOOST_HAS_DECLSPEC
+# if defined(NDNBOOST_ALL_DYN_LINK) || defined(NDNBOOST_IOSTREAMS_DYN_LINK)
+# ifdef NDNBOOST_IOSTREAMS_SOURCE
+# define NDNBOOST_IOSTREAMS_DECL __declspec(dllexport)
+# else
+# define NDNBOOST_IOSTREAMS_DECL __declspec(dllimport)
+# endif
+# endif
+#endif
+
+#ifndef NDNBOOST_IOSTREAMS_DECL
+# define NDNBOOST_IOSTREAMS_DECL
+#endif
+
+#endif // #ifndef NDNBOOST_IOSTREAMS_DETAIL_CONFIG_DYN_LINK_HPP_INCLUDED