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Newsgroups: comp.lang.ada
Date: Thu, 20 Jun 2019 11:29:47 -0700 (PDT)
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Subject: Re: work-in-progress Augusta Ada compiler for LLVM written in Scala
From: Optikos <optikos@verizon.net>
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Xref: reader01.eternal-september.org comp.lang.ada:56695
Date: 2019-06-20T11:29:47-07:00
List-Id: <comp.lang.ada>

On Wednesday, June 19, 2019 at 10:25:22 PM UTC-5, Optikos wrote:
> Why doesn't this work-in-progress unfinished Ada compiler come up in conv=
ersation here on c.l.a more often?  It seems to be in a state of active dev=
elopment with commits in recent months.
>=20
> https://github.com/pchapin/augusta

If Augusta proper (as opposed to the LGPLed SLEM library underneath Augusta=
) turns out to be licensed by a permissive license (or public domain), then=
 the Apache2.0-licensed Scala Native compiler might be a technique to deriv=
e a nonGPL/nonRuntimeLibraryException open-source (or even closed-source) c=
ompetitor to GNAT that targets LLVM (and hence usable on iOS Apple devices =
and likewise hence participate in Microsoft's ever-increasing embrace of Cl=
ang).  One could either:

1) compile Augusta via the Scala Native compiler to avoid being restricted =
to the pugnacious JVM bytecode, or

2) (via the Apache2.0 license on Scala Native, write a tree transducer-base=
d generator of Ada source code equivalent from the Scala source code, as th=
e multistage programming model (i.e., code generator of code generator of c=
ode generator) that curiously recurs in most compilers (including GNAT's GI=
MPLE tree-transducer).

https://github.com/scala-native/scala-native/blob/master/LICENSE.md

Perhaps this means that we should help Peter Chapin out some as co-contribu=
tors (beyond what effort he receives from his CS students, which seems focu=
sed on some of the test-suite source code for Augusta).