linux-kernel - Re: [tip:perfcounters/core] perf_counter tools: Build with native optimization

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Message-ID: <18984.28387.116533.597438@cargo.ozlabs.ibm.com>
Date:	Fri, 5 Jun 2009 11:03:31 +1000
From:	Paul Mackerras <paulus@...ba.org>
To:	mingo@...hat.com
Cc:	hpa@...or.com, acme@...hat.com, linux-kernel@...r.kernel.org,
	a.p.zijlstra@...llo.nl, efault@....de, mtosatti@...hat.com,
	tglx@...utronix.de, cjashfor@...ux.vnet.ibm.com
Subject: Re: [tip:perfcounters/core] perf_counter tools: Build with native optimization

tip-bot for Ingo Molnar writes:

> perf_counter tools: Build with native optimization
> 
> Build the tools with -march=native by default.

On powerpc (RHEL5.2 on POWER5+, gcc 4.1.2), I get:

    CC perf.o
cc1: error: unrecognized command line option "-march=native"
make: *** [perf.o] Error 1

Is there a way to make the default CFLAGS depend on the architecture?
We need -m64 on powerpc as well.

Paul.
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