[C++-sig] Re: Newbie vector_indexing_suite Link Errors

[David Abrahams]

"David Brownell" <groups at DavidBrownell.com> writes:

> I just discovered vector_indexing_suite, and am trying to compile the sample
> application that is linked from the documentation. 

Which one, please?  Linked from where in the documentation?

> When I compile the C++
> code, 

You mean when you try to link.

> I get the following unresolved externals:
>
> __declspec(dllimport) void __cdecl
> boost::python::objects::register_dynamic_id_aux <snip>
> __declspec(dllimport) void * __cdecl
> boost::python::objects::find_static_type <snip>
> __declspec(dllimport) public: __thiscall
> boost::python::converter::detail::arg_to_python_base::arg_to_python_base
> <snip>
> __declspec(dllimport) void * __cdecl
> boost::python::objects::find_dynamic_type <snip>
> __declspec(dllimport) class boost::python::api::object const & __cdecl
> boost::python::objects::identity_function <snip>
> __declspec(dllimport) struct _object * __cdecl
> boost::python::objects::make_nurse_and_patient <snip>
> __declspec(dllimport) void __cdecl
> boost::python::objects::stop_iteration_error <snip>

> It seems strange to me that the symbols are decoared with dllimport rather
> than dllexport, but I didn't see any unusual preprocessor magic going on in
> the code or described in the documentation that would ensure that these
> symbols are exported rather than imported. Is there something that I am
> missing to compile the example?
>
> Compiler: Microsoft Visual Studio v7.1
> OS: Win XP
> Boost: linking with $(PYTHON_ROOT)\libs\python23.lib and
> libboost_python-vc71-mt-gd-1_31.lib (which was compiled using bjam)
> Python: 2.3

Did you use bjam to build the "sample application?"  If not, do so.

-- 
Dave Abrahams
Boost Consulting
http://www.boost-consulting.com