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From: Niklas Holsti <niklas.holsti@tidorum.invalid>
Newsgroups: comp.lang.ada
Subject: Re: Why couldn't an operating system be written in ada
Date: Wed, 27 Feb 2019 16:23:14 +0200
Organization: Tidorum Ltd
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Date: 2019-02-27T16:23:14+02:00
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On 19-02-27 16:06 , russ lyttle wrote:
> On 2/27/19 3:20 AM, Dmitry A. Kazakov wrote:
>> BTW, nobody sane would ever use POSIX layer on VMS. VMS API were
>> infinitely more advanced and comfortable to use in every possible
>> aspect. The same can be said about Windows....
>>
> Thus my desire for an OS and Ada not dependent on any POSIX layer.

To me this seems like a kind of premature optimization. POSIX is not 
evil in and of itself. Presumably you will not be using VMS, so would no 
be committing the insanity Dmitry warns against.

> Still digging, but it looks to me like gnat depends on a POSIX layer.
> Is that true?

Certainly false for the AdaCore bare-metal runtimes I've seen. Those 
systems don't have any POSIX layer.

-- 
Niklas Holsti
Tidorum Ltd
niklas holsti tidorum fi
       .      @       .