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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: gnoga build fails on Mac
Date: Sun, 21 Jun 2020 17:46:57 +0100
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"Jeffrey R. Carter" <spam.jrcarter.not@spam.not.acm.org> writes:

> On 6/21/20 9:57 AM, Roger wrote:
>>
>> First problem with -gnat05 flag which I overcame but probably not
>> the correct way.

What problem? No mention of -gnat05 in the gnoga tree?

> Certainly not the correct way. Gnoga is in Ada 12 and should not be
> compiled with an earlier version of the language. Note the --gnat2012
> switch in settings.gpr to ensure this. The same functionality could be
> implemented in earlier versions of Ada, but if you do that, then we
> can't know if your problems are due to your changes or something else.
>
> Compiling Gnoga with --gnat2012 doesn't necessarily mean that you
> can't compile your code with -gnat05, but again, it makes it harder to
> understand any problems you may encounter.

And you can't use GNAT CE 2020 to compile other than with -gnat2012
(which is the default)