diff --git a/ndnboost/preprocessor/comparison/less.hpp b/ndnboost/preprocessor/comparison/less.hpp
new file mode 100644
index 0000000..5f138cf
--- /dev/null
+++ b/ndnboost/preprocessor/comparison/less.hpp
@@ -0,0 +1,46 @@
+# /* Copyright (C) 2001
+#  * Housemarque Oy
+#  * http://www.housemarque.com
+#  *
+#  * 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)
+#  */
+#
+# /* Revised by Paul Mensonides (2002) */
+#
+# /* See http://www.boost.org for most recent version. */
+#
+# ifndef BOOST_PREPROCESSOR_COMPARISON_LESS_HPP
+# define BOOST_PREPROCESSOR_COMPARISON_LESS_HPP
+#
+# include <ndnboost/preprocessor/comparison/less_equal.hpp>
+# include <ndnboost/preprocessor/comparison/not_equal.hpp>
+# include <ndnboost/preprocessor/config/config.hpp>
+# include <ndnboost/preprocessor/control/iif.hpp>
+# include <ndnboost/preprocessor/logical/bitand.hpp>
+# include <ndnboost/preprocessor/tuple/eat.hpp>
+#
+# /* BOOST_PP_LESS */
+#
+# if BOOST_PP_CONFIG_FLAGS() & (BOOST_PP_CONFIG_MWCC() | BOOST_PP_CONFIG_DMC())
+#    define BOOST_PP_LESS(x, y) BOOST_PP_BITAND(BOOST_PP_NOT_EQUAL(x, y), BOOST_PP_LESS_EQUAL(x, y))
+# elif ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
+#    define BOOST_PP_LESS(x, y) BOOST_PP_IIF(BOOST_PP_NOT_EQUAL(x, y), BOOST_PP_LESS_EQUAL, 0 BOOST_PP_TUPLE_EAT_2)(x, y)
+# else
+#    define BOOST_PP_LESS(x, y) BOOST_PP_LESS_I(x, y)
+#    define BOOST_PP_LESS_I(x, y) BOOST_PP_IIF(BOOST_PP_NOT_EQUAL(x, y), BOOST_PP_LESS_EQUAL, 0 BOOST_PP_TUPLE_EAT_2)(x, y)
+# endif
+#
+# /* BOOST_PP_LESS_D */
+#
+# if BOOST_PP_CONFIG_FLAGS() & (BOOST_PP_CONFIG_MWCC() | BOOST_PP_CONFIG_DMC())
+#    define BOOST_PP_LESS_D(d, x, y) BOOST_PP_BITAND(BOOST_PP_NOT_EQUAL(x, y), BOOST_PP_LESS_EQUAL_D(d, x, y))
+# elif ~BOOST_PP_CONFIG_FLAGS() & BOOST_PP_CONFIG_EDG()
+#    define BOOST_PP_LESS_D(d, x, y) BOOST_PP_IIF(BOOST_PP_NOT_EQUAL(x, y), BOOST_PP_LESS_EQUAL_D, 0 BOOST_PP_TUPLE_EAT_3)(d, x, y)
+# else
+#    define BOOST_PP_LESS_D(d, x, y) BOOST_PP_LESS_D_I(d, x, y)
+#    define BOOST_PP_LESS_D_I(d, x, y) BOOST_PP_IIF(BOOST_PP_NOT_EQUAL(x, y), BOOST_PP_LESS_EQUAL_D, 0 BOOST_PP_TUPLE_EAT_3)(d, x, y)
+# endif
+#
+# endif