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Subject: [bug#40767] [PATCH] gnu: Add maradns.
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From: Mathieu Othacehe <m.othacehe@gmail.com>
References: <20200422132922.9539-1-arunisaac@systemreboot.net>
Date: Wed, 22 Apr 2020 15:49:32 +0200
In-Reply-To: <20200422132922.9539-1-arunisaac@systemreboot.net> (Arun Isaac's
 message of "Wed, 22 Apr 2020 18:59:22 +0530")
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To: Arun Isaac <arunisaac@systemreboot.net>
Cc: 40767@debbugs.gnu.org


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