#ifndef BOOST_SERIALIZATION_FORCE_INCLUDE_HPP

#define BOOST_SERIALIZATION_FORCE_INCLUDE_HPP

// MS compatible compilers support #pragma once

#if defined(_MSC_VER) && (_MSC_VER >= 1020)

# pragma once

#endif

/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8

// force_include.hpp:

// (C) Copyright 2002 Robert Ramey - http://www.rrsd.com . 

// Use, modification and distribution is subject to 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 for updates, documentation, and revision history.

// implementation of class export functionality.  This is an alternative to

// "forward declaration" method to provoke instantiation of derived classes

// that are to be serialized through pointers.

#include <boost/config.hpp>

// the following help macro is to guarentee that certain coded

// is not removed by over-eager linker optimiser.  In certain cases

// we create static objects must be created but are actually never

// referenced - creation has a side-effect such as global registration

// which is important to us. We make an effort to refer these objects

// so that a smart linker won't remove them as being unreferenced.

// In microsoft compilers, inlining the code that does the referring

// means the code gets lost and the static object is not included

// in the library and hence never registered.  This manifests itself

// in an ungraceful crash at runtime when (and only when) built in

// release mode.

#if defined(BOOST_HAS_DECLSPEC) && !defined(__COMO__)

#   if defined(__BORLANDC__)

#       define BOOST_DLLEXPORT __export

#   else

#       define BOOST_DLLEXPORT __declspec(dllexport)

#   endif

#elif ! defined(_WIN32) && ! defined(_WIN64)

#   if defined(__MWERKS__)

#       // define BOOST_USED __attribute__ ((used))

#   elif defined(__GNUC__) && (__GNUC__ >= 3)

#       define BOOST_USED __attribute__ ((used))

#   elif defined(__INTEL_COMPILER) && (BOOST_INTEL_CXX_VERSION >= 800)

#       define BOOST_USED __attribute__ ((used))

#   endif

#endif

#ifndef BOOST_USED

#    define BOOST_USED

#endif

#ifndef BOOST_DLLEXPORT

#    define BOOST_DLLEXPORT

#endif

#endif // BOOST_SERIALIZATION_FORCE_INCLUDE_HPP