From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: Porting to mips64el
Date: Wed, 20 Feb 2013 12:40:45 +0100
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References: <8738yvnslh.fsf@karetnikov.org> <87ehgcz1lb.fsf@gnu.org>
	<201302191920.21591.andreas@enge.fr>
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In-Reply-To: <201302201030.24076.andreas@enge.fr> (Andreas Enge's message of
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To: Andreas Enge <andreas@enge.fr>
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Andreas Enge <andreas@enge.fr> skribis:

> Am Dienstag, 19. Februar 2013 schrieb Andreas Enge:
>> I think it might be enough to add the following configure flags:
>>    --with-arch=3Dmips64 -with-abi=3D64
>
> Unfortunately, it failed after some compilation time with

[...]

> checking how to run the C preprocessor... /lib/cpp
> configure: error: in `/tmp/nix-build-gcc-cross-
> boot0-4.7.2.drv-0/build/mips64el-guix-linux-gnu/libgcc':
> configure: error: C preprocessor "/lib/cpp" fails sanity check
> See `config.log' for more details.

Can you try to get the config.log file?  It tries /lib/cpp as a last
resort because =E2=80=9Cxgcc -E=E2=80=9D didn=E2=80=99t work, so we need to=
 find out why it
didn=E2=80=99t work.

How exactly did you modify gcc-boot0?

> Strangely, a new run of "guix-build hello" starts by building linux-libre-
> headers instead of gcc-cross-boot0.

Since linux-libre-headers doesn=E2=80=99t depend on gcc-cross-boot0, that=
=E2=80=99s a
valid choice.

Ludo=E2=80=99.