id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
5368	"Item for ""Tips and Tricks"" list in dokumentation"	schorsch_76@…	Robert Ramey	"How to handle BOOST_CLASS_EXPORT_KEY/BOOST_CLASS_EXPORT_IMPLEMENT in several static libraries and avoid linking errors?

== Make Header Archive.h ==
Make a Header ""Archive.h"". Include Everything for your serialization here. 
Example:
{{{
#!div style=""font-size: 80%""
Code highlighting:
:
{{{#!C
#ifndef __Archive_h__
#define __Archive_h__

// STL Archive + stuff
#include <boost/serialization/export.hpp>
#include <boost/serialization/base_object.hpp> 
#include <boost/serialization/list.hpp>
#include <boost/serialization/map.hpp>
#include <boost/serialization/vector.hpp>
#include <boost/serialization/shared_ptr.hpp>

// IMPORTANT: Archive Headers at last
// include headers that implement a archive in xml format
#include <boost/archive/archive_exception.hpp>

#include <boost/archive/xml_oarchive.hpp>
#include <boost/archive/xml_iarchive.hpp>

typedef boost::archive::xml_oarchive oarchive;
typedef boost::archive::xml_iarchive iarchive;

#endif // __Archive_h__
  }}}
}}}

== Define your classes as following ==

Myclass.h
{{{
#!div style=""font-size: 80%""
Code highlighting:
:
{{{#!C


#include ""Archive.h""

class Myclass
{
public:
	Myclass();
	~Myclass();

	double md_data;

private:
    friend class boost::serialization::access;

    // When the class Archive corresponds to an output archive, the
    // & operator is defined similar to <<.  Likewise, when the class Archive
    // is a type of input archive the & operator is defined similar to >>.
    template<class Archive>
    void serialize(Archive & ar, const unsigned int version)
    {
		ar & BOOST_SERIALIZATION_NVP(md_data;);
    }
};

BOOST_CLASS_VERSION(Myclass, 0)
BOOST_CLASS_EXPORT_KEY(Myclass)
  }}}
}}}

== Implementationfile of your class ==
Myclass.cpp
{{{
#!div style=""font-size: 80%""
Code highlighting:
:
{{{#!C


Myclass::Myclass()
{
}

Myclass::~Myclass()
{
}
BOOST_CLASS_EXPORT_IMPLEMENT(Myclass) 
  }}}
}}}


== Conclusion ==
Thats the way i made it working in my project with VC10 and boost 1.46.1 . My project consists of several static libraries which have dependencies under each other. Main dependency is the library which contains the serializable classes.

Hopefully this will help some people :-)

Best Regards

Georg"	Patches	closed	To Be Determined	serialization	Boost Release Branch	Optimization	invalid	Boost 1.46.1