[Boost-users] dll-interface problems

From: Andrej van der Zee (mavdzee_at_[hidden])
Date: 2008-07-28 03:36:38

Hi,

I am not much of a Windows programmer, so I have a basic question. I want to make a library that (among other stuff) defines an exception like this:

#include <boost/exception/exception.hpp>

namespace speedo {

    typedef boost::error_info<struct tag_error, unsigned> error_info;

    class __declspec(dllexport) exception : public boost::exception
    {
    };

}

When I try to compile this, I get the following warning:

c:\cygwin\home\andrej\speedo\trunk\util\exception.h(14) : warning C4275: non dll-interface class 'boost::exception' used as base for dll-interface class 'speedo::exception'
        C:\cygwin\home\Andrej\speedo\trunk\boost/exception/exception.hpp(47) : see declaration of 'boost::exception'
        c:\cygwin\home\andrej\speedo\trunk\util\exception.h(13) : see declaration of 'speedo::exception'


Is this a problem, and, how do I get rid of this without changing the boost-exception lib itself?

Cheers,
Andrej


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