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Subject: [bug#32624] [PATCH] gnu: perl: Add support for cross-compilation
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References: <87bm9er7rv.fsf@posteo.net> <878t4iuuaf.fsf@gnu.org>
From: =?UTF-8?Q?Rapha=C3=ABl_?= =?UTF-8?Q?M=C3=A9lotte?=
	<raphael.melotte@gmail.com>
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Date: Tue, 04 Sep 2018 12:13:10 +0200
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To: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@gnu.org>
Cc: 32624@debbugs.gnu.org


Ludovic Court=C3=A8s writes:

> I tested a variant of this patch with --target=3Darm-linux-gnueabihf.
> During the =E2=80=98configure=E2=80=99 phase, I see:
>
> --8<---------------cut here---------------start------------->8---
> Checking for cross-compile
> No targethost for running compiler tests against defined, running locally
> --8<---------------cut here---------------end--------------->8---
>
> Then the build completes but the result is a set of x86_64 (native)
> binaries.
>
> So I suppose some more work in needed to really cross-compile.  Maybe we
> need to pass specific configure flags?

Ok, thanks for checking.
After some web searching and according to the following page, cross-compili=
ng perl isn't an easy
task:
https://arsv.github.io/perl-cross/index.html

Do you think it would be a good idea to package perl-cross and use it
when cross-compiling ?

The other option (giving -Dtargethost to the configure script) seems to req=
uire
a target host to be available with an ssh
server running.


> (BTW, I think I already wrote this but you don=E2=80=99t need to cross-co=
mpile
> if all you want is 32-bit binaries.  Simply use =E2=80=9C-s i686-linux=E2=
=80=9D for
> that.)

Yes you mentioned it a few month ago, and that helped me a lot back
then :-)
I wanted to come back to trying to cross-compile some packages because
I find it interesting (the idea of remotely building packages for other arc=
hitectures
is so cool).


Thanks,

Rapha=C3=ABl.