linux-kernel - Re: [patch] perf build questions

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Date:	Tue, 06 Oct 2009 20:02:48 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Randy Dunlap <randy.dunlap@...cle.com>
Cc:	lkml <linux-kernel@...r.kernel.org>,
	Paul Mackerras <paulus@...ba.org>, Ingo Molnar <mingo@...e.hu>
Subject: Re: [patch] perf build questions

On Tue, 2009-10-06 at 10:26 -0700, Randy Dunlap wrote:
> On Tue, 06 Oct 2009 10:48:59 +0200 Peter Zijlstra wrote:
> 
> > On Mon, 2009-10-05 at 13:17 -0700, Randy Dunlap wrote:
> > > Hi,
> > > 
> > > How do I build 'perf' for an i386 target when running on x86_64?
> > 
> > make NO_64BIT=1
> 
> $ make NO_64BIT=1 all
> $ file perf
> perf: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), for GNU/Linux 2.6.4, dynamically linked (uses shared libs), not stripped
> 
> 
> Shouldn't that be a 32-bit executable for i386?
> Am I confused?  (you don't have to answer that)

# uname -a
Linux twins 2.6.31-tip #212 SMP PREEMPT Tue Sep 22 12:02:22 CEST 2009
x86_64 GNU/Linux
# rm perf
# make NO_64BIT=1 perf
# file perf
perf: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV),
dynamically linked (uses shared libs), for GNU/Linux 2.6.15, not
stripped


seems to work for me...



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