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1 #ifndef BOOST_SERIALIZATION_FORCE_INCLUDE_HPP
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2 #define BOOST_SERIALIZATION_FORCE_INCLUDE_HPP
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3
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4 // MS compatible compilers support #pragma once
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5 #if defined(_MSC_VER)
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6 # pragma once
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7 #endif
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8
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9 /////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
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10 // force_include.hpp:
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11
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12 // (C) Copyright 2002 Robert Ramey - http://www.rrsd.com .
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13 // Use, modification and distribution is subject to the Boost Software
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14 // License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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15 // http://www.boost.org/LICENSE_1_0.txt)
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16
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17 // See http://www.boost.org for updates, documentation, and revision history.
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18
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19 #include <boost/config.hpp>
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20
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21 // the following help macro is to guarentee that certain coded
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22 // is not removed by over-eager linker optimiser. In certain cases
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23 // we create static objects must be created but are actually never
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24 // referenced - creation has a side-effect such as global registration
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25 // which is important to us. We make an effort to refer these objects
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26 // so that a smart linker won't remove them as being unreferenced.
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27 // In microsoft compilers, inlining the code that does the referring
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28 // means the code gets lost and the static object is not included
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29 // in the library and hence never registered. This manifests itself
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30 // in an ungraceful crash at runtime when (and only when) built in
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31 // release mode.
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32
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33 #if defined(BOOST_HAS_DECLSPEC) && !defined(__COMO__)
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34 # if defined(__BORLANDC__)
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35 # define BOOST_DLLEXPORT __export
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36 # else
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37 # define BOOST_DLLEXPORT __declspec(dllexport)
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38 # endif
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39 #elif ! defined(_WIN32) && ! defined(_WIN64)
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40 # if defined(__MWERKS__)
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41 # define BOOST_DLLEXPORT __declspec(dllexport)
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42 # elif defined(__GNUC__) && (__GNUC__ >= 3)
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43 # define BOOST_USED __attribute__ ((__used__))
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44 # elif defined(__IBMCPP__) && (__IBMCPP__ >= 1110)
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45 # define BOOST_USED __attribute__ ((__used__))
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46 # elif defined(__INTEL_COMPILER) && (BOOST_INTEL_CXX_VERSION >= 800)
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47 # define BOOST_USED __attribute__ ((__used__))
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48 # endif
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49 #endif
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50
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51 #ifndef BOOST_USED
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52 # define BOOST_USED
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53 #endif
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54
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55 #ifndef BOOST_DLLEXPORT
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56 # define BOOST_DLLEXPORT
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57 #endif
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58
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59 #endif // BOOST_SERIALIZATION_FORCE_INCLUDE_HPP
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