Building DLL with GNAT to be used with non-Ada application on Windows : some doubts

[Jérôme Haguet]

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 and call an initialization routine.
As detailed in §G.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 using 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 `adafinal'

Is it possible or not ?
If yes, what is the setting I have omitted ?

My gpr :

library project my_ada_lib is

for Languages use ("Ada");

for Library_Name use "my_ada_lib";
for Library_Kind use "dynamic";

for Source_Dirs use (".");
for Object_Dir use "obj";
for Library_Dir use "..";

end my_ada_lib;

[David Sauvage]

Would they be my_ada_libinit & my_ada_libfinal in your case ?

Cheers

$ nm libmy_ada_lib.so | grep init

[Jérôme Haguet]

I got it ...

Solution was in chapter "1.5.3 Stand-alone Library Projects" of GPRbuild user's guide :

I just add :
for Library_Interface use ("my_ada_lib");
and everything is working fine ...