linux-kernel - Re: [PATCH 2/4] Core support for --combine -fwhole-program

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Message-Id: <1156498643.2984.28.camel@pmac.infradead.org>
Date:	Fri, 25 Aug 2006 10:37:23 +0100
From:	David Woodhouse <dwmw2@...radead.org>
To:	Adrian Bunk <bunk@...sta.de>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/4] Core support for --combine -fwhole-program

On Thu, 2006-08-24 at 23:33 +0200, Adrian Bunk wrote:
> If a "build everything except for assembler files at once" approach is 
> possible, it should be possible to revert this and get even further 
> savings.

Only if we build _everything_ at once, which may take an insane amount
of RAM. Doing it a directory at a time makes a certain amount of sense,
and tends to combine the most incestuous code -- although maybe
combinations like building arch/$ARCH/kernel/ with kernel/ (and likewise
mm) could be an interesting experiment.

I suspected that most of the 'further savings' to which you refer above
could be achieved more easily with -ffunction-sections -fdata-sections
--gc-sections

-- 
dwmw2

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