Im trying to create a DLL, Ill just run through a quick example.  Given the file FX.d

import std.c.stdio;

class Foo{

	this() {}
	void doCrap() { puts("HERE"); }
}

I compile and create the object file , I then use Burtons omfListExports to create the definition file


EXPORTS
D2FX3Foo5_ctorFZC2FX3Foo
D2FX3Foo6doCrapFZv


, which works great except when trying to link to the lib i get this error

foo.obj(foo)
 Error 42: Symbol Undefined __Class_2FX3Foo

Where foo is just a class that instaitaes Foo and tries the method.  I try adding this definition to the .def file but get

OPTLINK : Error 180: No Match Found for Export/ENTRY -  : __Class_2FX3Foo
OPTLINK : Error 81: Cannot EXPORT : __Class_2FX3Foo

I try prepending it with D2 , but same error.

How should I proceed ?

Thanks,
Charlie

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A tad more info

file FX.d is linked with FX_dll_main.d ( and the .def file ) which reads

import std.c.windows.windows;

extern (C) void gc_init();
extern (C) void gc_term();
extern (C) void _minit();
extern (C) void _moduleCtor();
extern (C) void _moduleUnitTests();

extern(Windows)
BOOL DllMain(HINSTANCE hinst, ULONG reason, LPVOID reserved)
{
    switch (reason)
    {
        case DLL_PROCESS_ATTACH:
            gc_init ();
            _minit ();
            _moduleCtor ();
            _moduleUnitTests ();
            break;

        case DLL_PROCESS_DETACH:
            gc_term ();
            break;
    }

    return true;
}

I get this __Class not defined error if I use digc directly or my own rolled version.


C

On Fri, 26 Mar 2004 23:41:33 -0800, C <dont@respond.com> wrote:

> Im trying to create a DLL, Ill just run through a quick example.  Given the file FX.d
>
> import std.c.stdio;
>
> class Foo{
>
> 	this() {}
> 	void doCrap() { puts("HERE"); }
> }
>
> I compile and create the object file , I then use Burtons omfListExports to create the definition file
>
>
> EXPORTS
> D2FX3Foo5_ctorFZC2FX3Foo
> D2FX3Foo6doCrapFZv
>
>
> , which works great except when trying to link to the lib i get this error
>
> foo.obj(foo)
>   Error 42: Symbol Undefined __Class_2FX3Foo
>
> Where foo is just a class that instaitaes Foo and tries the method.  I try adding this definition to the .def file but get
>
> OPTLINK : Error 180: No Match Found for Export/ENTRY -  : __Class_2FX3Foo
> OPTLINK : Error 81: Cannot EXPORT : __Class_2FX3Foo
>
> I try prepending it with D2 , but same error.
>
> How should I proceed ?
>
> Thanks,
> Charlie
>



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I had a problem with this awhile back, and came to no conclusion. But just now, I finally got it to link, but the program causes an access violation.

I don't think export is working on classes, but it does work on member functions. To get it to export the class, I had to do what you tried in the dll exports in the def file, but remove one leading underscore:
_Class_2FX3Foo
I then created the dll, and used implib -a on it (to put the underscore back on) and it linked.

-- 
Christopher E. Miller

Vathix wrote:
> I had a problem with this awhile back, and came to no conclusion. But just now, I finally got it to link, but the program causes an access violation.
> 
> I don't think export is working on classes, but it does work on member functions. To get it to export the class, I had to do what you tried in the dll exports in the def file, but remove one leading underscore:
> _Class_2FX3Foo
> I then created the dll, and used implib -a on it (to put the underscore back on) and it linked.
> 

implib -a is for borland, for digital mars it's implib /s


-- 
Christopher E. Miller

Yea that links alright , then using the -L/IMPLIB:FX.lib linker flag i get

The procedure entry point _Class_2FX3Foo coud not be located in the dll FX.dll

for foo.exe ( thats linked against FX.lib ).

Using implib /s FX.lib FX.dll

I then try to link to fx.lib and get

__Class undefined for foo.obj.

Seems an issue that needs some attention ?

Charles

On Sun, 28 Mar 2004 00:59:46 -0500, Vathix <vathix@dprogramming.com> wrote:

> Vathix wrote:
>> I had a problem with this awhile back, and came to no conclusion. But just now, I finally got it to link, but the program causes an access violation.
>>
>> I don't think export is working on classes, but it does work on member functions. To get it to export the class, I had to do what you tried in the dll exports in the def file, but remove one leading underscore:
>> _Class_2FX3Foo
>> I then created the dll, and used implib -a on it (to put the underscore back on) and it linked.
>>
>
> implib -a is for borland, for digital mars it's implib /s
>
>



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