From: "M. R. Brown" <mrbrown@0xd6.org>
To: nbecker@fred.net
Cc: linux-kernel@vger.kernel.org
Subject: Re: Why no -march=athlon?
Date: Mon, 17 Dec 2001 11:40:20 -0600 [thread overview]
Message-ID: <20011217174020.GA24772@0xd6.org> (raw)
In-Reply-To: <x88r8ptki37.fsf@rpppc1.hns.com>
In-Reply-To: <x88r8ptki37.fsf@rpppc1.hns.com>
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* nbecker@fred.net <nbecker@fred.net> on Mon, Dec 17, 2001:
> I noticed that linux/arch/i386/Makefile says:
>
> ifdef CONFIG_MK7
> CFLAGS += -march=i686 -malign-functions=4
> endif
>
>
> Why not -march=athlon? Is this just for compatibility with old gcc?
The recommend kernel compiler is gcc 2.95.x, which doesn't support
"-march=athlon".
> If so, can't we fix it with an ifdef?
Can you fix it? You'd have to parse the output of `gcc -v`, I think
kbuild 2.5 does this, so start there first.
M. R.
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next prev parent reply other threads:[~2001-12-17 17:40 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-12-17 14:59 Why no -march=athlon? nbecker
2001-12-17 15:54 ` Dominik Mierzejewski
2001-12-17 17:40 ` M. R. Brown [this message]
2001-12-19 17:46 ` On K7, -march=k6 is good (Was Re: Why no -march=athlon?) Benoit Poulot-Cazajous
2001-12-19 17:56 ` M. R. Brown
2001-12-19 18:39 ` nbecker
2001-12-19 18:47 ` M. R. Brown
2001-12-19 18:52 ` J Sloan
2001-12-19 19:01 ` Josh McKinney
2001-12-19 19:21 ` M. R. Brown
2001-12-19 19:28 ` J Sloan
2001-12-19 19:38 ` Allan Sandfeld
2001-12-19 21:40 ` Benoit Poulot-Cazajous
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