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

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Message-Id: <20080523111707.89df9f67.akpm@linux-foundation.org>
Date:	Fri, 23 May 2008 11:17:07 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Adrian Bunk <bunk@...nel.org>
Cc:	peter.oberparleiter@...ibm.com, linux-kernel@...r.kernel.org,
	ltp-coverage@...ts.sourceforge.net, sam@...nborg.org,
	oberparleiter@...glemail.com
Subject: Re: [PATCH 6/7] kbuild: make source and include paths absolute

On Fri, 23 May 2008 20:18:40 +0300
Adrian Bunk <bunk@...nel.org> wrote:

> On Thu, May 22, 2008 at 08:17:24PM -0700, Andrew Morton wrote:
> > On Mon, 19 May 2008 10:44:56 +0200 Peter Oberparleiter <peter.oberparleiter@...ibm.com> wrote:
> > 
> > > From: Peter Oberparleiter <peter.oberparleiter@...ibm.com>
> > > 
> > > Change all source and include paths to absolute form when
> > > CONFIG_GCOV_PROFILE is enabled.
> > > 
> > > Example:
> > > 
> > >   gcc -Idir1 -c a.c -o a.o
> > > 
> > > will become
> > > 
> > >   gcc -I/path/to/dir1 -c /path/to/a.c -o a.o
> > > 
> > > Required by the gcov profiling infrastructure: when compiling with
> > > option -fprofile-arcs, gcc stores file names inside object files.
> > > Relative paths prevent the gcov tool from finding corresponding source
> > > files.
> > 
> > I don't like this.  It converts the compiler error messages from
> > relative paths to absolute paths which is rather obnoxious when
> > all kernel developent is (or should be) base-directory-agnostic.
> 
> The compiler error messages are already absolute paths when using O=
> (see e.g. all error messages sent by me in recent years).
> 

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?
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