linux-kernel - Re: UML dead with current -git?

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Message-Id: <20070919085032.dd5c1732.randy.dunlap@oracle.com>
Date:	Wed, 19 Sep 2007 08:50:32 -0700
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Philipp Marek <philipp@...ek.priv.at>
Cc:	Jeff Dike <jdike@...toit.com>, Sam Ravnborg <sam@...nborg.org>,
	linux-kernel@...r.kernel.org
Subject: Re: UML dead with current -git?

On Wed, 19 Sep 2007 14:43:23 +0200 Philipp Marek wrote:

> On Wednesday 19 September 2007 Jeff Dike wrote:
> > On Tue, Sep 18, 2007 at 07:55:13PM +0200, Sam Ravnborg wrote:
> > > Sounds to me like a known issue by you. Can you give a few more details
> > > so we maybe can get it fixed?
> > I believe what happened here is an x86_64 build followed by a
> > UML/x86_64 build with no intervening mrproper.
> Yes, after a "make mrproper" it compiles fine.
> However, the .config is gone afterwards ...
> 
> > I've always considered this to be a "don't do that" sort of thing.
> > However, maybe we could stick the arch of the current build somewhere
> > in the tree, check that before any serious part of a subsequent
> > build, and error out if $ARCH is different.
> Well, on this line it may be nice to be able to put the target architecture 
> somewhere ...
> 	make mrproper
> 	make menuconfig ARCH=um
> 	make ARCH=um
> ... some tweaking
> 	make menuconfig
> and the .config is overwritten with the "wrong" architecture.
> (I know about .config.bak and so on ... just a small wish)

Yes, I've tried to coerce the top-level Makefile into honoring/using
the include/asm symlink if it exists, i.e., taking ARCH from
readlink include/asm && sed -e 's/include-asm//', but sadly my
makefile foo was not good enough.

---
~Randy
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