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From: Niklas Holsti <niklas.holsti@tidorum.invalid>
Newsgroups: comp.lang.ada
Subject: Re: ANN: Kickstarter for beginning work on a new open-source Compiler
Date: Sat, 22 Mar 2014 13:41:13 +0100
Organization: Tidorum Ltd
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 <5B1Xu.64246$086.61049@fx18.iad> <lgj880$he5$1@dont-email.me>
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Xref: news.eternal-september.org comp.lang.ada:18920
Date: 2014-03-22T13:41:13+01:00
List-Id: <comp.lang.ada>

On 14-03-22 11:25 , Dirk Craeynest wrote:
> In article <87txaqd28v.fsf@ludovic-brenta.org>,
> Ludovic Brenta  <ludovic@ludovic-brenta.org> wrote:
>> "J-P. Rosen" <rosen@adalog.fr> writes:
>>> FYI, Gnat was always written in Ada, bootstrapped from the Alsys
>>> compiler.
>>
>> Really?  I always thought it was bootstrapped from Ada/Ed?
> 
> Yes, really.  The first successful bootstrap of GNAT, using the Alsys
> Ada 83 compiler, was announced at the Ada-Europe conference in June
> 1993 in Paris (by Robert Dewar, IIRC).
> 
> And no, it wasn't by using Ada/Ed, as that was an interpreter
> and didn't generate any object code or executable. 

The way you worded that suggests that Ada/Ed being an interpreter would
have prevented using it to bootstrap GNAT, but of course that is not so.
As long as *GNAT* was able to generate an executable, one could have
used Ada/Ed to execute GNAT (albeit through interpretation) to compile
the GNAT source code into an executable GNAT.

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