Good question. Since I don't have that compiler, I've been unable to reproduce it. Is this: error: error C2039: 'boost::get': Ist kein Element von 'boost::extensions::shared_library'. The only error that you see? Please add the command line option /P to your build - this will output the preprocessed version of your file test_extension_and_optional.cpp. Then send this to me - I might be able to figure out what is going on. It looks like one of the preprocessor macros used by Boost.PreProcessor isn't working - I do have some ideas about what may cause the problem. See: http://support.microsoft.com/kb/134650 What happens when you move boost/optional.hpp after the extension headers? Jeremy On Fri, Apr 18, 2008 at 8:01 AM, David Matz <david.matz@spatialview.com> wrote:
Hi,
it seems that the problem concerns a specific compiler bug in microsoft compilers <= 13.10.6030 (MSVC 7.1).
The MSVC8 and g++ (4.1.2) compilers are able to build the code without errors.
#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"); }
Any ideas how to get it to work with the good old Visual Studio 2003?
-- David Matz ---------------------------- Software Developer Spatial View GmbH