linux-kernel - Re: [PATCH 1/3]: Replace kernel/timeconst.pl with kernel/timeconst.sh

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Message-Id: <1231172280.3326.138.camel@gimli.at.home>
Date:	Mon, 05 Jan 2009 17:18:00 +0100
From:	Bernd Petrovitsch <bernd@...mix.at>
To:	Jamie Lokier <jamie@...reable.org>
Cc:	Rob Landley <rob@...dley.net>, Valdis.Kletnieks@...edu,
	Ingo Oeser <ioe-lkml@...eria.de>,
	Embedded Linux mailing list <linux-embedded@...r.kernel.org>,
	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	"H. Peter Anvin" <hpa@...or.com>, Sam Ravnborg <sam@...nborg.org>
Subject: Re: [PATCH 1/3]: Replace kernel/timeconst.pl with
	kernel/timeconst.sh

On Mon, 2009-01-05 at 15:01 +0000, Jamie Lokier wrote:
> Bernd Petrovitsch wrote:
> > I assume that the NFS-mounted root filesystem is a real distribution.
> 
> Not unless you call uClinux (MMU-less) a real distribution, no.

Not really.

> > > (* - No MMU on some ARMs, but I'm working on ARM FDPIC-ELF to add
> > >      proper shared libs.  Feel free to fund this :-)
> > 
> > The above mentioned ARMs have a MMU. Without MMU, it would be truly
> > insane IMHO.
> 
> We have similar cross-build issues without MMUs... I.e. that a lot of

Of course.

> useful packages don't cross-build properly (including many which use
> Autoconf), and it might be easier to make a native build environment

Tell me about it - AC_TRY_RUN() is the culprit.
And `pkg-config` supports cross-compilation only since 18 months or so.
Before one had to rewrite the generated .pc files.

[...]
> You mentioned ARM Debian.  According to
> http://wiki.debian.org/ArmEabiPort one recommended method of
> bootstrapping it is building natively on an emulated ARM, because
> cross-building is fragile.

That's of course the other solution - if qemu supports your
$EMBEDDED_CPU good enough.

	Bernd
-- 
Firmix Software GmbH                   http://www.firmix.at/
mobil: +43 664 4416156                 fax: +43 1 7890849-55
          Embedded Linux Development and Services

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