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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: gnoga build fails on Mac
Date: Mon, 22 Jun 2020 07:56:15 +0200
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On 22/06/2020 05:15, Roger wrote:
> In reply to Sunday, June 21, 2020 at 11:28:18 PM UTC+10, Dmitry A. Kazakov wrote:
> 
> Thanks, that worked. A similar problem occurred with Gnoga.Gui.View.adb.
> Additional problems:
> demo/db_maker/movies.adb
> "equality operator must be declared before type "Movie_Info" is frozen (RM 4.5.2 (9.8)) (Ada 2012)"
> I couldn't figure out how to fix this so I removed this demo from the build.

That looks like a compiler bug to me. But what happens when you do 
declarations first. E.g. replace

type Movie_Info is record
    Title       : Strng;
    Year        : Strng;
    Director    : Strng;
    Writer      : Strng;
    Male_Lead   : Strng;
    Female_Lead : Strng;
end record;

function "=" (Left : Movie_Info; Right : Movie_Info) return Boolean is
    ...
end "=";

function "<" (Left : Movie_Info; Right : Movie_Info) return Boolean is
    ...
end "<";

...

with


type Movie_Info is record
    Title       : Strng;
    Year        : Strng;
    Director    : Strng;
    Writer      : Strng;
    Male_Lead   : Strng;
    Female_Lead : Strng;
end record;

-- Declarations first
function "=" (Left : Movie_Info; Right : Movie_Info) return Boolean;
function "<" (Left : Movie_Info; Right : Movie_Info) return Boolean;
...

-- All bodies
function "=" (Left : Movie_Info; Right : Movie_Info) return Boolean is
    ...
end "=";

function "<" (Left : Movie_Info; Right : Movie_Info) return Boolean is
    ...
end "<";
...

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de