From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: Cross-compilation, Guix "system", and GNU "triplet"
Date: Tue, 28 Nov 2017 17:05:00 +0100
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In-Reply-To: <87374zuep7.fsf@gmail.com> (Chris Marusich's message of "Mon, 27
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To: Chris Marusich <cmmarusich@gmail.com>
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Chris Marusich <cmmarusich@gmail.com> skribis:

> ludo@gnu.org (Ludovic Court=C3=A8s) writes:
>
>> The ABI and file format are entirely (or almost entirely) the
>> responsibility of user-land software (how you configure the toolchain
>> determines what ABI you use, for instance.)  Thus they=E2=80=99re necess=
arily
>> captured by the dependency graph; no need to store that information
>> elsewhere.
>>
>> ...
>>=20
>> It=E2=80=99s the toolchain that shows up in the graph that determines wh=
at ABI
>> is targeted.
>
> The Guix manual makes it sound like the Guix system string can identify
> more than just the CPU architecture and kernel.  Specifically, in the
> section titled "GNU Distribution", it says the following:
>
> =E2=80=98armhf-linux=E2=80=99
>      ARMv7-A architecture with hard float, Thumb-2 and NEON, using the
>      EABI hard-float application binary interface (ABI), and Linux-Libre
>      kernel.
>
> =E2=80=98aarch64-linux=E2=80=99
>      little-endian 64-bit ARMv8-A processors, Linux-Libre kernel.  This
>      is currently in an experimental stage, with limited support.  *Note
>      Contributing::, for how to help!
>
> =E2=80=98mips64el-linux=E2=80=99
>      little-endian 64-bit MIPS processors, specifically the Loongson
>      series, n32 ABI, and Linux-Libre kernel.
>
>
> Is this langugae too specific?

I think so, yes.

Then again we could use different system strings to different ABIs, but
we don=E2=80=99t have to.

Ludo=E2=80=99.