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From: David Sauvage <david.sauvage@adalabs.com>
Newsgroups: comp.lang.ada
Subject: Re: Building DLL with GNAT to be used with non-Ada application on
 Windows : some doubts
Date: Thu, 29 Mar 2012 01:00:09 -0700 (PDT)
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Date: 2012-03-29T01:00:09-07:00
List-Id: <comp.lang.ada>

On Mar 28, 5:05=A0pm, J=E9r=F4me Haguet <j.hag...@cadwin.com> wrote:
> Hello
>
> My configuration : GNAT GPL 2011 / Windows 7
>
> Some years ago, I had built a DLL with gnat.
> As it was supposed to be used with non-Ada application, I had to export a=
nd call an initialization routine.
> As detailed in =A7G.11 Gnat UG.
> This was done with a simple makefile, calling gnatmake then gnatdll.
>
> This process is still working with Gnat GPL 2011.
>
> Now, I am trying to do the same with a gpr file.
> I am able to build a DLL to be used with Ada application (in this case us=
ing GNAT shared runtime)
> As detailed in $G.10 in Gnat UG.
> But I am not able to build a DLL exporting its own initialization routine=
.
> When building the library, the linker fails with following message:
> my_ada_lib.o:my_ada_lib.adb:(.text+0x77): undefined reference to `adainit=
'
> my_ada_lib.o:my_ada_lib.adb:(.text+0x87): undefined reference to `adafina=
l'
>
> Is it possible or not ?
> If yes, what is the setting I have omitted ?
>
> My gpr :
>
> library project my_ada_lib is
>
> =A0 =A0for Languages use ("Ada");
>
> =A0 =A0for Library_Name use "my_ada_lib";
> =A0 =A0for Library_Kind use "dynamic";
>
> =A0 =A0for Source_Dirs use (".");
> =A0 =A0for Object_Dir =A0 use "obj";
> =A0 =A0for Library_Dir =A0use "..";
>
> end my_ada_lib;

Would they be my_ada_libinit & my_ada_libfinal in your case ?

Cheers

$ nm libmy_ada_lib.so | grep init