link from a dll to another function in another dll?

[Denis Koroskin]

On Sat, 30 Apr 2011 13:47:53 +0400, maarten van damme  
<maartenvd1994 at gmail.com> wrote:

> I've changed this, I think I'm still kinda confused with lib files.  
> They've
> told me you can't do something with them without a .di file
> So I went ahead and made a kernel33.di file. I now import it in  
> kernel32.d
> and my declaration is
> System(C){
> export void * exportedfunctionblablabal(){
>    return exportedfunctionblablablal();
> }
> ...
> }
>
> The file in the directory are:
> kernel32.d : http://dl.dropbox.com/u/15024434/d/kernel32.d
> kernel33.di : http://dl.dropbox.com/u/15024434/d/kernel33.di
> kernel33.lib : http://dl.dropbox.com/u/15024434/d/kernel33.lib
> kernel33.dll : http://dl.dropbox.com/u/15024434/d/kernel33.dll
>
> I've tried to compile using dmd -d kernel32.d kernel33.di kernel33.lib  
> but
> it throws errors like
> "Error 42: Symbol undifined _Dkernel1336_hreadfzpV"
> I have literally no clue why this is the case, can someone help me out or
> look at the files?
>
> 2011/4/27 maarten van damme <maartenvd1994 at gmail.com>
>
>> I'm afraid I've been a little unclear.
>> I've copied kernel32.dll from the windows dir, renamed it to  
>> kernel33.dll
>> and generated a .lib from it using implib.
>> Then I've created a d file with a correct dllmain(stolen from examples)  
>> and
>> between
>>
>> system(C){
>> export void * exportedfunctionfromkernel33.dll();
>> export void * exportedfunction2fromkernel33.dll();
>> ...
>> }
>>
>> But it looks like you can't both declare a function from another lib and
>> export it at the same time.
>>

In your kernel33.di, try making it extern (C) export void* _hread(); etc.  
You functions get D mangling otherwise.

I'd also suggest you to start with a less complex example, e.g. export  
only one function, make sure it works, then add the rest.

If you think your .lib files doesn't do its job, try using .def file  
instead. I find them extremely helpful, and they are a lot easier to  
edit/extend.

Hope that helps.