linux-kernel - Re: [PATCH] perf tools: Fix build error on read only source.

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Message-ID: <20100818165642.GF9410@ghostprotocols.net>
Date:	Wed, 18 Aug 2010 13:56:42 -0300
From:	Arnaldo Carvalho de Melo <acme@...radead.org>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Kusanagi Kouichi <slash@...auone-net.jp>,
	Bernd Petrovitsch <bernd@...prog.at>,
	Paul Mackerras <paulus@...ba.org>, Ingo Molnar <mingo@...e.hu>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] perf tools: Fix build error on read only source.

Em Wed, Aug 18, 2010 at 04:27:45PM +0200, Peter Zijlstra escreveu:
> On Wed, 2010-08-18 at 11:16 -0300, Arnaldo Carvalho de Melo wrote:
> > rm -rf ~/build
> > make O=~/build
> > 
> > and have everything work? Saving some keystrokes 8)
> 
> The turn side is that if you typo the output dir you'll probably not
> ever find it again.. and you could have typed: rm -rf ~/build/* instead.

Not something I'll argue too much :)

I'll apply the patch as it fixes a bug and later make the perf Makefile
complain about the output dir not existing, i.e. providing a message
similar to what the kernel proper does instead of the cryptic message we
get today.

If Kouichi-san or Bernd could provide that patch for perf/core, even
better! ;-)

- Arnaldo
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