[bug#54235] [PATCH v2 2/3] gnu: Add ck.

[Maxim Cournoyer <maxim.cournoyer@gmail.com>]

Hi,

Maxime Devos <maximedevos@telenet.be> writes:

> Maxim Cournoyer schreef op ma 07-03-2022 om 23:38 [-0500]:
>> +              (define (gnu-triplet->machine target)
>> +                (letrec-syntax
>> +                    ((matches (syntax-rules (=>)
>> +                                ((_ (target-prefix => machine) rest ...)
>> +                                 (if (string-prefix? target-prefix target)
>> +                                     machine
>> +                                     (matches rest ...)))
>> +                                ((_)
>> +                                 (error "unsupported target" target)))))
>> +                  ;; This basically reproduces the logic handling the
>> +                  ;; PLATFORM variable in the configure script.
>> +                  (matches ("x86_64"      => "x86_64")
>> +                           ("i586"        => "x86")
>> +                           ("i686"        => "x86")
>> +                           ("aarch64"     => "aarch64")
>> +                           ("arm"         => "arm")
>> +                           ("ppc64"       => "ppc64")
>> +                           ("ppc"         => "ppc")
>> +                           ("s390x"       => "s390x")
>> +                           ("sparc64"     => "sparcv9"))))
>
> I would move this outside the build code, such that new targets can be
> added without having to rebuild ck and dependents.

Done!

> Also, there are a few 'target-foo?' procedures in (guix utils) that can be used here (if
> it were moved outisde the build code).

I left the code as-is, as it seemed more uniform this way.

Thanks,

Maxim