linux-kernel - Re: [PATCH 6/7] kbuild: make source and include paths absolute

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Message-ID: <20080523195222.GA366@uranus.ravnborg.org>
Date:	Fri, 23 May 2008 21:52:22 +0200
From:	Sam Ravnborg <sam@...nborg.org>
To:	Vegard Nossum <vegard.nossum@...il.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Adrian Bunk <bunk@...nel.org>, peter.oberparleiter@...ibm.com,
	linux-kernel@...r.kernel.org, ltp-coverage@...ts.sourceforge.net,
	oberparleiter@...glemail.com
Subject: Re: [PATCH 6/7] kbuild: make source and include paths absolute

> >>
> >> Well I guess that's understandable with O=.
> >>
> >> But I find it rather nasty.  (I guess it'd be less nasty if I were to
> >> get off my butt and work out how to teach rxvt that "/" is a word
> >> separator).
> >>
> >> What do others think?
> >
> > That the gcov tool has a bug if it insist on using absolute paths.
> > And thus we should fix gcov and not workaround it in the kernel.
> 
> IIRC, there was also the slight problem that all uses of __FILE__
> (there are quite a few in the kernel) will also now be absolute and
> increase the size of the vmlinux image by quite a bit.
> 
> Yeah... http://lkml.org/lkml/2006/4/25/40
This is specific to O=.. build kernels.
I recall this is not an issue for the gcov patchset (if O=... is not used).
But I have not checked it.

	Sam
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