williamr@2: #ifndef BOOST_SERIALIZATION_FORCE_INCLUDE_HPP
williamr@2: #define BOOST_SERIALIZATION_FORCE_INCLUDE_HPP
williamr@2: 
williamr@2: // MS compatible compilers support #pragma once
williamr@2: #if defined(_MSC_VER) && (_MSC_VER >= 1020)
williamr@2: # pragma once
williamr@2: #endif
williamr@2: 
williamr@2: /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
williamr@2: // force_include.hpp:
williamr@2: 
williamr@2: // (C) Copyright 2002 Robert Ramey - http://www.rrsd.com . 
williamr@2: // Use, modification and distribution is subject to the Boost Software
williamr@2: // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
williamr@2: // http://www.boost.org/LICENSE_1_0.txt)
williamr@2: 
williamr@2: //  See http://www.boost.org for updates, documentation, and revision history.
williamr@2: 
williamr@2: // implementation of class export functionality.  This is an alternative to
williamr@2: // "forward declaration" method to provoke instantiation of derived classes
williamr@2: // that are to be serialized through pointers.
williamr@2: 
williamr@2: #include <boost/config.hpp>
williamr@2: 
williamr@2: // the following help macro is to guarentee that certain coded
williamr@2: // is not removed by over-eager linker optimiser.  In certain cases
williamr@2: // we create static objects must be created but are actually never
williamr@2: // referenced - creation has a side-effect such as global registration
williamr@2: // which is important to us. We make an effort to refer these objects
williamr@2: // so that a smart linker won't remove them as being unreferenced.
williamr@2: // In microsoft compilers, inlining the code that does the referring
williamr@2: // means the code gets lost and the static object is not included
williamr@2: // in the library and hence never registered.  This manifests itself
williamr@2: // in an ungraceful crash at runtime when (and only when) built in
williamr@2: // release mode.
williamr@2: 
williamr@2: #if defined(BOOST_HAS_DECLSPEC) && !defined(__COMO__)
williamr@2: #   if defined(__BORLANDC__)
williamr@2: #       define BOOST_DLLEXPORT __export
williamr@2: #   else
williamr@2: #       define BOOST_DLLEXPORT __declspec(dllexport)
williamr@2: #   endif
williamr@2: #elif ! defined(_WIN32) && ! defined(_WIN64)
williamr@2: #   if defined(__MWERKS__)
williamr@2: #       // define BOOST_USED __attribute__ ((used))
williamr@2: #   elif defined(__GNUC__) && (__GNUC__ >= 3)
williamr@2: #       define BOOST_USED __attribute__ ((used))
williamr@2: #   elif defined(__INTEL_COMPILER) && (BOOST_INTEL_CXX_VERSION >= 800)
williamr@2: #       define BOOST_USED __attribute__ ((used))
williamr@2: #   endif
williamr@2: #endif
williamr@2: 
williamr@2: #ifndef BOOST_USED
williamr@2: #    define BOOST_USED
williamr@2: #endif
williamr@2: 
williamr@2: #ifndef BOOST_DLLEXPORT
williamr@2: #    define BOOST_DLLEXPORT
williamr@2: #endif
williamr@2: 
williamr@2: #endif // BOOST_SERIALIZATION_FORCE_INCLUDE_HPP