Re: GNAT Project Files?

[Ludovic Brenta <ludovic.brenta@insalien.org>]

Pascal Obry writes:
> Jacob Sparre Andersen writes:
>
>> -----
>> with "/usr/share/ada/adainclude/xmlada.gpr";
>> project AWS is
>>    for Source_Dirs use ("/usr/share/ada/adainclude/aws");
>>    for Object_Dir use "/usr/lib/ada/adalib/aws";
>>    Ada_Switches := "-laws";
>>    package Linker is
>>       for Default_Switches ("Ada") use (Ada_Switches);
>>    end Linker;
>> end AWS;
>> -----
>
> This project is not a library project and not a project file coming
> from the AWS project. So with this project you need to pass the
> library option to the linker yourself. Please have a look at the
> Library Project file and how this is handled in AWS. AWS has also
> Library Project to support external libraries like the one for
> OpenSSL. Which such an achitecture you just need to add into your
> own project file:
>
>    with "aws";
>
> And that's all. If you want SSL support you can use :
>
>    with "aws_ssl";
>
> Pascal.

Pascal, you are correct.  The project file that I supply as part of
libaws (2.0p) is not a library project file.  The reason for this is
that GNAT 3.15p does not support library project files.  Hence, Jacob
needs to specify a linker option in his project file, like so:

with "/usr/share/ada/adainclude/aws";
with "/usr/share/ada/adainclude/charles";
with "/home/sparre/Ada/Pakker/Strenge/string_arrays";
with "/home/sparre/Ada/Programmer/CGI/Ordlisten/get_random_words";

project Test_Word_Buffer is
   for Object_Dir use ".";
   for Exec_Dir use ".";
   for Main use ("test_word_buffer");
   package Linker is
      for Default_Switches ("Ada") use
         (AWS.Ada_Switches, Charles.Ada_Switches,
          -- linker switches from String_Arrays and Get_Random_Words
         );
   end Linker;
end Test_Word_Buffer;

This is explained in the comments in aws.gpr, which Jacob mistakenly
omitted to read, it seems:

        --  Ada Web Server project file for use with GNAT 3.15p
        --  Copyright (c) 2004 Ludovic Brenta <ludovic.brenta@insalien.org>
        --
        --  This program is free software; you can redistribute it and/or modify
        --  it under the terms of the GNU General Public License as published by
        --  the Free Software Foundation; either version 2 of the License, or
        --  (at your option) any later version.
        --
        --  This program is distributed in the hope that it will be useful,
        --  but WITHOUT ANY WARRANTY; without even the implied warranty of
        --  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        --  GNU General Public License for more details.
        --
        --  This project file is designed to help build applications that use
        --  Ada Web Server.  Here is an example of how to use this project file:
        --
        --  with "/usr/share/ada/adainclude/aws";
        --  project Example is
        --     for Object_Dir use "obj";
        --     for Exec_Dir use ".";
        --     for Main use ("example");
        --     package Linker renames AWS.Linker;
        --     --  Alternatively, if you need additional switches:
        --     --  package Linker is
        --     --     for Default_Switches ("Ada") use (AWS.Ada_Switches & ...)
        --     --  end Linker;
        --  end Example;

        with "/usr/share/ada/adainclude/xmlada.gpr";
        project AWS is
           for Source_Dirs use ("/usr/share/ada/adainclude/aws");
           for Object_Dir use "/usr/lib/ada/adalib/aws";
           Ada_Switches := "-laws";
           package Linker is
              for Default_Switches ("Ada") use (Ada_Switches);
           end Linker;
        end AWS;

This is also explained in the Debian Policy for Ada:

http://www.ada-france.org/debian/debian-ada-policy.html

-- 
Ludovic Brenta.