Include bind in ndnboost.
diff --git a/ndnboost/bind/placeholders.hpp b/ndnboost/bind/placeholders.hpp
new file mode 100644
index 0000000..0b9f0fc
--- /dev/null
+++ b/ndnboost/bind/placeholders.hpp
@@ -0,0 +1,69 @@
+#ifndef BOOST_BIND_PLACEHOLDERS_HPP_INCLUDED
+#define BOOST_BIND_PLACEHOLDERS_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+// bind/placeholders.hpp - _N definitions
+//
+// Copyright (c) 2002 Peter Dimov and Multi Media Ltd.
+//
+// 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/bind/bind.html for documentation.
+//
+
+#include <ndnboost/bind/arg.hpp>
+#include <ndnboost/config.hpp>
+
+namespace
+{
+
+#if defined(__BORLANDC__) || defined(__GNUC__) && (__GNUC__ < 4)
+
+static inline ndnboost::arg<1> _1() { return ndnboost::arg<1>(); }
+static inline ndnboost::arg<2> _2() { return ndnboost::arg<2>(); }
+static inline ndnboost::arg<3> _3() { return ndnboost::arg<3>(); }
+static inline ndnboost::arg<4> _4() { return ndnboost::arg<4>(); }
+static inline ndnboost::arg<5> _5() { return ndnboost::arg<5>(); }
+static inline ndnboost::arg<6> _6() { return ndnboost::arg<6>(); }
+static inline ndnboost::arg<7> _7() { return ndnboost::arg<7>(); }
+static inline ndnboost::arg<8> _8() { return ndnboost::arg<8>(); }
+static inline ndnboost::arg<9> _9() { return ndnboost::arg<9>(); }
+
+#elif defined(BOOST_MSVC) || (defined(__DECCXX_VER) && __DECCXX_VER <= 60590031) || defined(__MWERKS__) || \
+ defined(__GNUC__) && (__GNUC__ == 4 && __GNUC_MINOR__ < 2)
+
+static ndnboost::arg<1> _1;
+static ndnboost::arg<2> _2;
+static ndnboost::arg<3> _3;
+static ndnboost::arg<4> _4;
+static ndnboost::arg<5> _5;
+static ndnboost::arg<6> _6;
+static ndnboost::arg<7> _7;
+static ndnboost::arg<8> _8;
+static ndnboost::arg<9> _9;
+
+#else
+
+ndnboost::arg<1> _1;
+ndnboost::arg<2> _2;
+ndnboost::arg<3> _3;
+ndnboost::arg<4> _4;
+ndnboost::arg<5> _5;
+ndnboost::arg<6> _6;
+ndnboost::arg<7> _7;
+ndnboost::arg<8> _8;
+ndnboost::arg<9> _9;
+
+#endif
+
+} // unnamed namespace
+
+#endif // #ifndef BOOST_BIND_PLACEHOLDERS_HPP_INCLUDED