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Newsgroups: comp.lang.ada
Date: Fri, 1 Nov 2019 15:10:04 -0700 (PDT)
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Subject: Re: How to write gpr files from scratch , example 1,
 build only one package
From: Alain De Vos <devosalain71@gmail.com>
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Xref: reader01.eternal-september.org comp.lang.ada:57432
Date: 2019-11-01T15:10:04-07:00
List-Id: <comp.lang.ada>

On Friday, November 1, 2019 at 11:04:07 PM UTC+1, Alain De Vos wrote:
> https://docs.adacore.com/gprbuild-docs/html/gprbuild_ug/gnat_project_manager.html
> 
> I have a file buttonhandler.adb containing :
> -- TEST : Connecting via the On_* procedures first method
> with GTk...stuff...;
> package body buttonhandler is
>    procedure On_Button_Click (Button : access Gtk_Button_Record'Class) is
>    begin
>       Put_line ("Hallo");
>    end On_Button_Click;
> end buttonhandler;
> --------------------------------------------
> > Now I write  : my_buttonhandler.gpr contents (as there is no main entry),                                              
> with "gtkada.gpr";
> project My_buttonhandler is
> end My_buttonhandler;
> ------------------------------------------
> Executing :
> gprbuild -Pmy_buttonhandler.gpr returns :
> Compile
>    [Ada]          buttonhandler.adb
> buttonhandler.adb:19:14: file "buttonhandler.ads" not found

In C language you just compile all the object files and link them together but here it is bit different ...