ndnboost: Include boost::iostreams for internal use.
diff --git a/include/ndnboost/iostreams/detail/config/windows_posix.hpp b/include/ndnboost/iostreams/detail/config/windows_posix.hpp
new file mode 100644
index 0000000..9fd9c45
--- /dev/null
+++ b/include/ndnboost/iostreams/detail/config/windows_posix.hpp
@@ -0,0 +1,25 @@
+// (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com)
+// (C) Copyright 2004-2007 Jonathan Turkanis
+// (C) Copyright 2002, 2003 Beman Dawes Boost.Filesystem
+// 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.
+
+#ifndef NDNBOOST_IOSTREAMS_DETAIL_CONFIG_WINDOWS_POSIX_HPP_INCLUDED
+#define NDNBOOST_IOSTREAMS_DETAIL_CONFIG_WINDOWS_POSIX_HPP_INCLUDED
+
+//------------------From ndnboost/libs/filesystem/src/path_posix_windows.cpp-----//
+
+// NDNBOOST_IOSTREAMS_POSIX or NDNBOOST_IOSTREAMS_WINDOWS specify which API to use.
+#if !defined( NDNBOOST_IOSTREAMS_WINDOWS ) && !defined( NDNBOOST_IOSTREAMS_POSIX )
+# if (defined(_WIN32) || defined(__WIN32__) || defined(WIN32)) && \
+ !defined(__CYGWIN__) \
+ /**/
+# define NDNBOOST_IOSTREAMS_WINDOWS
+# else
+# define NDNBOOST_IOSTREAMS_POSIX
+# endif
+#endif
+
+#endif // #ifndef NDNBOOST_IOSTREAMS_DETAIL_CONFIG_WINDOWS_POSIX_HPP_INCLUDED