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Date: Wed, 24 Jun 2020 12:06:01 -0700 (PDT)
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Subject: Re: Ada on Apple's new procesors
From: Optikos <ZUERCHER_Andreas@outlook.com>
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Xref: reader01.eternal-september.org comp.lang.ada:59207
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On Wednesday, June 24, 2020 at 11:35:09 AM UTC-5, Simon Wright wrote:
> "Luke A. Guest" writes:
>=20
> > My options are:
> >
> > 1) Write and Ada compiler.
> > 2) Develop my own language without Ada or GNAT's baggage.
> > 3) Find another language.
>=20
> Isn't there an option 0, carry on using GCC?

Yes, option 0 would support only Apple's Intel-based products (and perhaps =
still support PowerPC-based defunct products), not the new ARM-based Mac, w=
hich is the entire point of OP.  Without GNAT-LLVM, no Ada compiler from an=
y vendor on the new ARM-based Mac nor on iOS/iPadOS devices.  So that is wh=
y 2 prior authors omitted option 0:  because it is effectively a degenerate=
 inferior not-quite-a-full-option.

> As a side note, the README.md in gnat-llvm says "This is a
> work-in-progress research project that=E2=80=99s not meant for and should=
n=E2=80=99t be
> used for industrial purposes. It=E2=80=99s meant to show the feasibility =
of
> generating LLVM bitcode for Ada and to open the LLVM ecosystem to Ada,
> including tools such as KLEE."

It is because of this warning, that I cannot place much trust in AdaCore fi=
rmly disclaiming the legal matter of generated executables or DLLs (that li=
nk to the runtime) ending up pure GPLed under some usages of LLVM opt, espe=
cially certain plug-ins, plus perhaps some other complicating Compilation P=
rocess that violates a subtle obligatory term in meeting the stricter Ellig=
ibile Compilation Process in the RLE.