Re:Re: native dll's

[José Soriano Díaz]

> From: Francois Gouget 
> To: José Soriano Díaz 
> CC: [e-mail]
> Subject: Re: native dll's
> Date: Thu, 26 Jul 2001 10:10:17 -0700 (PDT)
>
> On Wed, 25 Jul 2001, José Soriano Díaz wrote:
> >     Hi there, I'm working in a telerobotics project and I need to 
>
> link a
> > windows dll in order to use a Cybernet Joystick.
> >         First I tried to use the winAPI functions LoadLibrary,
> > FreeLibrary and GetProccessAddress as I were working on Windows, and
> > I recompiled my program with winelib:
> >                 *. winemaker /my_path/
> >                 *. ./configure
> >                 *. make all
> >         but it didn't create any executable, what I obtained was a
> > lib*.so, because winemaker thought I was trying to compile a dll,
> > not to use one.
>
> To force winemaker to generate an executable simply use it as
> follows:
> -
>
> type "winemaker --cuiexe /my_path" to indicate a console executable
> -
>
> type "winemaker --guiexe /my_path" to indicate a graphical executable
>
> You can also use "winemaker -?" to get a list of options supported by
>
> winemaker.
> >     So my question is quite siple How can I link a native dll in
> >
> > a Unix project?
>
> I think you have used the right approach: LoadLibrary /
> GetProccessAddress / FreeLibrary. If that works for you then it's the
> simplest approach.

I'm afraid it doesn't work, when I executed what I compiled , I obtained 
"Undefined Symbol" in any call to the native dll. Thanks anyway for the 
advice.

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native dll's

[Francois Gouget]

On Fri, 27 Jul 2001, José Soriano Díaz wrote:
[...]
> > >     So my question is quite siple How can I link a native dll in
> > >
> > > a Unix project?
> >
> > I think you have used the right approach: LoadLibrary /
> > GetProcAddress / FreeLibrary. If that works for you then it's the
> > simplest approach.
>
> I'm afraid it doesn't work, when I executed what I compiled , I obtained 
> "Undefined Symbol" in any call to the native dll. Thanks anyway for the 
> advice.

That's strange. It sounds like you are simply calling the functions
but I thought you were using GetProcAddress to get a function pointer
and then using that function pointer to call each function you imported
from the dll. You should not have any undefined symbol when doing that.
   It's not C++? (C++ makes things more intractable because each virtual
function table is a hidden import of a non function symbol.)
   Also you should be warned of any undefined symbol at link
time. Didn't you get such warnings? What did they say?

--
Francois Gouget         [e-mail]        http://fgouget.free.fr/
           Demander si un ordinateur peut penser revient à demander
                          si un sous-marin peut nager.