* Re: Linking Ada and DLLs
1999-03-12 0:00 Linking Ada and DLLs J�r�me HAGUET
@ 1999-03-12 0:00 ` Martin C. Carlisle
0 siblings, 0 replies; 2+ messages in thread
From: Martin C. Carlisle @ 1999-03-12 0:00 UTC (permalink / raw)
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In article <01be6cab$bc8e4380$40bd2bc0@pc-internet2>,
J�r�me HAGUET <j.haguet@cadwin.com> wrote:
>I am trying to build an application in ADA linked with C DLLs.
>This DLLs use stdcall calling convention.
>
>I built import library using dll2def and dlltool :
> dll2def imp_dll.dll > imp_dll.def
> dlltool --dllname imp_dll.dll --def imp_dll.def --output imp_dll.a
>
>if I uses import (Stdcall, ada_name, "C_name"), link fails. If I uses
>import (C, ada_name,
>"C_name"), link works but execution fails.
>
>Can someone explain me why I cannot use stdcall ?
As I recall, the problem is that dll2def doesn't create the appropriate
file. I had to manually edit it to add the @8, @12, etc. to the end of
each export name, then add the -k flag to dlltool.
To figure out what extension to add, you can do one of two things:
1) If you already have a .lib file, look in it to see what the names
are.
2) Count up the number of bytes of arguments being passed (usually 4
per argument, unless you have doubles). 3 ints => @12 is the suffix.
--Martin
--
Martin C. Carlisle, Asst Prof of Computer Science, US Air Force Academy
carlislem@acm.org, http://www.usafa.af.mil/dfcs/bios/carlisle.html
DISCLAIMER: This content in no way reflects the opinions, standards or
policy of the US Air Force Academy or the United States Government.
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