[Boost-users] [extension] conflict with boost::optional

From: David Matz (david.matz_at_[hidden])
Date: 2008-04-16 13:08:46

Hello,

I have some trouble using boost::extension and boost::optional together in a 
project (MSVC 7.1). The compiler complains that boost::get is not an element of 
extensions::shared_library. Without the optional.hpp header everything works 
fine. It seems the for some reason the macro 
BOOST_EXTENSION_SHARED_LIBRARY_GET_FUNCTION isn't valid when 
shared_library.get<>() is called but I can't find out why.

A small code snippet that reproduces the error

file: test_extension_and_optional.cpp

#include <boost/optional/optional.hpp>	// included for some reason
#include <boost/extension/shared_library.hpp>
#include <boost/extension/convenience.hpp>	// load_single_library

void loadExtension () {
        boost::extensions::factory_map fm;
        // we don't need the following line to produce the compiler error
        //boost::extensions::load_single_library(fm, ".", "external_function_name");
}

error: error C2039: 'boost::get': Ist kein Element von 
'boost::extensions::shared_library'

Thanks in advance.

David

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David Matz
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