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From: dewar@gnat.com (Robert Dewar)
Newsgroups: comp.lang.ada
Subject: Re: The making of compilers
Date: 28 Feb 2002 21:00:21 -0800
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Jeffrey Carter <jeffrey.carter@boeing.com> wrote in message news:<3C7D1B7A.5A17002E@boeing.com>...
> My recollection of a talk by Ichbiah (at the time) was that they wrote
> the Alsys compiler in Ada 83 and wrote a program (presumably in PL/1) to
> translate Ada 83 to PL/1. Once the executable worked well enough, of
> course, they stopped using the translator and just compiled the compiler
> with the compiler.


Yes, that's exactly right, and that's what I meant by a
subset compiler written in PL/1 (converting Ada to another
language is one possible way of writing a compiler for
Ada, even today there are Ada 95 compilers that work by
translating to C).