boost/config/no_tr1/utility.hpp

   1 //  (C) Copyright John Maddock 2005.
   2 //  Use, modification and distribution are subject to the
   3 //  Boost Software License, Version 1.0. (See accompanying file
   4 //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   5 //
   6 // The aim of this header is just to include <utility> but to do
   7 // so in a way that does not result in recursive inclusion of
   8 // the Boost TR1 components if boost/tr1/tr1/utility is in the
   9 // include search path.  We have to do this to avoid circular
  10 // dependencies:
  11 //
  12
  13 #ifndef BOOST_CONFIG_UTILITY
  14 #  define BOOST_CONFIG_UTILITY
  15
  16 #  ifndef BOOST_TR1_NO_RECURSION
  17 #     define BOOST_TR1_NO_RECURSION
  18 #     define BOOST_CONFIG_NO_UTILITY_RECURSION
  19 #  endif
  20
  21 #  include <utility>
  22
  23 #  ifdef BOOST_CONFIG_NO_UTILITY_RECURSION
  24 #     undef BOOST_TR1_NO_RECURSION
  25 #     undef BOOST_CONFIG_NO_UTILITY_RECURSION
  26 #  endif
  27
  28 #endif