diff --git a/ndnboost/io_fwd.hpp b/ndnboost/io_fwd.hpp
new file mode 100644
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+++ b/ndnboost/io_fwd.hpp
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+//  Boost io_fwd.hpp header file  --------------------------------------------//
+
+//  Copyright 2002 Daryle Walker.  Use, modification, and distribution are subject
+//  to the Boost Software License, Version 1.0.  (See accompanying file
+//  LICENSE_1_0.txt or a copy at <http://www.boost.org/LICENSE_1_0.txt>.)
+
+//  See <http://www.boost.org/libs/io/> for the library's home page.
+
+#ifndef BOOST_IO_FWD_HPP
+#define BOOST_IO_FWD_HPP
+
+#include <iosfwd>  // for std::char_traits (declaration)
+
+
+namespace ndnboost
+{
+namespace io
+{
+
+
+//  From <ndnboost/io/ios_state.hpp>  -------------------------------------------//
+
+class ios_flags_saver;
+class ios_precision_saver;
+class ios_width_saver;
+class ios_base_all_saver;
+
+template < typename Ch, class Tr = ::std::char_traits<Ch> >
+    class basic_ios_iostate_saver;
+template < typename Ch, class Tr = ::std::char_traits<Ch> >
+    class basic_ios_exception_saver;
+template < typename Ch, class Tr = ::std::char_traits<Ch> >
+    class basic_ios_tie_saver;
+template < typename Ch, class Tr = ::std::char_traits<Ch> >
+    class basic_ios_rdbuf_saver;
+template < typename Ch, class Tr = ::std::char_traits<Ch> >
+    class basic_ios_fill_saver;
+template < typename Ch, class Tr = ::std::char_traits<Ch> >
+    class basic_ios_locale_saver;
+template < typename Ch, class Tr = ::std::char_traits<Ch> >
+    class basic_ios_all_saver;
+
+typedef basic_ios_iostate_saver<char>        ios_iostate_saver;
+typedef basic_ios_iostate_saver<wchar_t>    wios_iostate_saver;
+typedef basic_ios_exception_saver<char>      ios_exception_saver;
+typedef basic_ios_exception_saver<wchar_t>  wios_exception_saver;
+typedef basic_ios_tie_saver<char>            ios_tie_saver;
+typedef basic_ios_tie_saver<wchar_t>        wios_tie_saver;
+typedef basic_ios_rdbuf_saver<char>          ios_rdbuf_saver;
+typedef basic_ios_rdbuf_saver<wchar_t>      wios_rdbuf_saver;
+typedef basic_ios_fill_saver<char>           ios_fill_saver;
+typedef basic_ios_fill_saver<wchar_t>       wios_fill_saver;
+typedef basic_ios_locale_saver<char>         ios_locale_saver;
+typedef basic_ios_locale_saver<wchar_t>     wios_locale_saver;
+typedef basic_ios_all_saver<char>            ios_all_saver;
+typedef basic_ios_all_saver<wchar_t>        wios_all_saver;
+
+class ios_iword_saver;
+class ios_pword_saver;
+class ios_all_word_saver;
+
+
+}  // namespace io
+}  // namespace ndnboost
+
+
+#endif  // BOOST_IO_FWD_HPP