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

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Date:	Mon, 5 Jan 2009 15:01:56 +0000
From:	Jamie Lokier <jamie@...reable.org>
To:	Bernd Petrovitsch <bernd@...mix.at>
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

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.

> > (* - 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
useful packages don't cross-build properly (including many which use
Autoconf), and it might be easier to make a native build environment
than to debug and patch all the broken-for-cross-build packages.
Especially as sometimes they build, but fail at run-time in some
conditions.

But you're right it's probably insane to try.  I haven't dared as I
suspect GCC and/or Binutils would break too :-)

I'm sticking instead with "oh well cross-build a few packages by hand
and just don't even _try_ to use most of the handy software out there".

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.

-- Jamie
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