[bug#40767] [PATCH] gnu: Add maradns.

[Mathieu Othacehe <m.othacehe@gmail.com>]

Hello,

> +       #:make-flags (list "CC=gcc"
> +                          (string-append "PREFIX=" %output)
> +                          (string-append "RPM_BUILD_ROOT=" %output))

Hard-coding CC variable this way prevents cross-compilation. If you run:

--8<---------------cut here---------------start------------->8---
./pre-inst-env guix build maradns --target=aarch64-linux-gnu --target=aarch64-linux-gnu
--8<---------------cut here---------------end--------------->8---

you will obtain a native version of the binaries. Something like that
would work better:

--8<---------------cut here---------------start------------->8---
(string-append "CC=" (if target
                          (string-append (assoc-ref %build-inputs "cross-gcc")
                                         "/bin/" target "-gcc")
                          "gcc"))
--8<---------------cut here---------------end--------------->8---

As this is a recurrent problem we may need to put this snippet into a
gnu-build-system function?

Thanks,

Mathieu