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Message-Id: <199906231500.KAA00598@mercury.xraylith.wisc.edu>
To: Emanuele ALIBERTI <ealiberti@hotmail.com>
cc: cygwin@sourceware.cygnus.com
Subject: Re: Dlls @n symbols 
In-Reply-To: Your message of "Wed, 23 Jun 1999 00:09:26 PDT."
             <19990623070926.36354.qmail@hotmail.com> 
Date: Wed, 23 Jun 1999 10:00:40 -0500
From: Mumit Khan <khan@xraylith.wisc.EDU>

Emanuele ALIBERTI <ealiberti@hotmail.com> writes:
> I had to face the same problem. But could not solve it completely yet. There 
> is also a mistake in the dlltool documentation, where it is told the figure 
> after @ is the function's ordinal number: it is actually the stack size the 
> exported function will add to the ESP on return (that's STDCALL).
> To make a clean exports table, now I use explicit aliasing in the .DEF file:

I'll take a look at the doc. I believe the docs refer the number "1" below
as the ordinal, not the @<n> number in foo@0.
  
  EXPORTS
    foo = foo@0 @ 1	; 1 is the ordinal number.

> ----------
> LIBRARY sample
> EXPORTS
> Bar=Bar@0
> Foo=Foo@24

It turns out that Suhaib's problem is very different than yours.

What you're telling the dll tools is that you want to link with Bar@0, but 
have the DLL export Bar; similarly with Foo. One way to get both in the
export list is the following:

 LIBRARY sample
 EXPORTS
 Bar@0
 Bar=Bar@0
 Foo@24
 Foo=Foo@24

> ----------
> but still fail to generate an import library which makes the application 
> dynamically link correctly. In the context of the previous example .DEF, I 
> get errors like "Loader could not find Foo@24 in sample.dll" (in fact 
> sample.dll exports now "Foo", not "Foo@24").

Now sample.dll exports both Foo and Foo@24.

dllwrap and dlltool both provide --add-stdcall-alias option just for this
so you don't have to do this manually. See my dllhelpers examples for more
info at http://www.xraylith.wisc.edu/pub/khan/gnu-win32/dllhelpers.html.

Regards,
Mumit


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