Date: Sun, 11 Nov 2007 16:30:49 +0100
From: Sam Ravnborg <sam@ravnborg.org>
To: Guillaume Chazarain <guichaz@yahoo.fr>
Cc: Adrian Bunk <bunk@kernel.org>, LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] kconfig: use $K64BIT to set 64BIT with all*config targets
Message-ID: <20071111153049.GA9561@uranus.ravnborg.org>
References: <20071110204038.GA13140@uranus.ravnborg.org> <11947274093185-git-send-email-sam@ravnborg.org> <11947274091127-git-send-email-sam@ravnborg.org> <3d8471ca0711101255m1647e27cm241f358cc49a9921@mail.gmail.com> <20071111051408.GC21669@stusta.de> <3d8471ca0711110443v46084714m709b2b713a536b19@mail.gmail.com> <20071111130714.GN21669@stusta.de> <3d8471ca0711110659w20b6dd8epfa49cd3fcb814d0e@mail.gmail.com>
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On Sun, Nov 11, 2007 at 03:59:54PM +0100, Guillaume Chazarain wrote:
> > I'm wondering why you don't use two different O= output directories
> > instead?
> >
> > Depending on the CONFIG_ option in question this might even greatly
> > reduce your compile times.
> 
> /me is filled with wonder at the discovery that .config is saved in the O=
> directory. Thanks a lot Adrian for this time saver. So it's not strictly an
> output directory, more a build directory.
The opposite....
All output is placed there - including the configuration generated by
the *config frontends.
It is not limited to kernel-build output.

One of the use cases for "make O=.." is a setup where the kernel source
is located in a RO location (CDROM, restricted permissions etc).

	Sam
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