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April 08, 2004
Module Woes
I'm having a problem.  

I have the following files:

========mtest.d===========
module mtest;

int c;

static this()
{
c = 3;
}

int add(int x, int y)
{
return x + y;
}

void compile(char[] pattern, char[] attributes)
{

}

===========add.d============
import mtest;

int main()
{
int a = add(1, 2);
return 0;
}


when I compile it, I get this in the console:
D:\dmd\test>..\bin\dmd add.d
D:\dmd\bin\..\..\dm\bin\link.exe add,,,user32+kernel32/noi;
OPTLINK (R) for Win32  Release 7.50B1
Copyright (C) Digital Mars 1989 - 2001  All Rights Reserved

add.obj(add)
Error 42: Symbol Undefined _D5mtest3addFiiZi
--- errorlevel 1

it doesn't matter what symbols I'm using, it always comes up as Error 42: Symbol
Undefined if it's from a module.

Does anyone have any insights?

Thanks
-Deja
April 08, 2004
Re: Module Woes
> when I compile it, I get this in the console:
> D:\dmd\test>..\bin\dmd add.d

Your problem is here  ^^^^^^^

> D:\dmd\bin\..\..\dm\bin\link.exe add,,,user32+kernel32/noi;

or here                            ^^^^

> OPTLINK (R) for Win32  Release 7.50B1
> Copyright (C) Digital Mars 1989 - 2001  All Rights Reserved
> 
> add.obj(add)
> Error 42: Symbol Undefined _D5mtest3addFiiZi
> --- errorlevel 1
> 
> it doesn't matter what symbols I'm using, it always comes up as Error 42: Symbol
> Undefined if it's from a module.
> 
> Does anyone have any insights?
> 

You _don't_ compile the mtest module!
If you want to compile your project just run

"dmd add.d mtest.d"

The mtest module is only virtually imported. Unlike in C or C++ includes 
the compiler does not compile code in imported modules. You have to 
compile and link imported modules, too.

Stephan
April 08, 2004
Re: Module Woes
In article <c548k4$2534$1@digitaldaemon.com>, Stephan Wienczny says...
>
>
>> when I compile it, I get this in the console:
>> D:\dmd\test>..\bin\dmd add.d
>
>Your problem is here  ^^^^^^^
>
>> D:\dmd\bin\..\..\dm\bin\link.exe add,,,user32+kernel32/noi;
>
>or here                            ^^^^
>
>> OPTLINK (R) for Win32  Release 7.50B1
>> Copyright (C) Digital Mars 1989 - 2001  All Rights Reserved
>> 
>> add.obj(add)
>> Error 42: Symbol Undefined _D5mtest3addFiiZi
>> --- errorlevel 1
>> 
>> it doesn't matter what symbols I'm using, it always comes up as Error 42: Symbol
>> Undefined if it's from a module.
>> 
>> Does anyone have any insights?
>> 
>
>You _don't_ compile the mtest module!
>If you want to compile your project just run
>
>"dmd add.d mtest.d"
>
>The mtest module is only virtually imported. Unlike in C or C++ includes 
>the compiler does not compile code in imported modules. You have to 
>compile and link imported modules, too.
>
>Stephan


D'OH!!  Thanks ;)
April 09, 2004
Re: Module Woes
Hey don't feel bad, I came to D after a few years of working almost
entirely with Java... I /still/ forget this sometimes.  One of the
reasons I started using a build utility... its hard to mess up a
commandline that I don't even have to type.  :)

-C. Sauls
-Invironz

Deja Augustine wrote:
> In article <c548k4$2534$1@digitaldaemon.com>, Stephan Wienczny says...
> 
>>
>>>when I compile it, I get this in the console:
>>>D:\dmd\test>..\bin\dmd add.d
>>
>>Your problem is here  ^^^^^^^
>>
>>
>>>D:\dmd\bin\..\..\dm\bin\link.exe add,,,user32+kernel32/noi;
>>
>>or here                            ^^^^
>>
>>
>>>OPTLINK (R) for Win32  Release 7.50B1
>>>Copyright (C) Digital Mars 1989 - 2001  All Rights Reserved
>>>
>>>add.obj(add)
>>>Error 42: Symbol Undefined _D5mtest3addFiiZi
>>>--- errorlevel 1
>>>
>>>it doesn't matter what symbols I'm using, it always comes up as Error 42: Symbol
>>>Undefined if it's from a module.
>>>
>>>Does anyone have any insights?
>>>
>>
>>You _don't_ compile the mtest module!
>>If you want to compile your project just run
>>
>>"dmd add.d mtest.d"
>>
>>The mtest module is only virtually imported. Unlike in C or C++ includes 
>>the compiler does not compile code in imported modules. You have to 
>>compile and link imported modules, too.
>>
>>Stephan
> 
> 
> 
> D'OH!!  Thanks ;)
> 
>
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