Date: 27 Mar 2001 05:35:29 +0400 From: Ilya Martynov <m_ilya@agava.com> To: Eric M Logan <ericmlogan@mediaone.net> Cc: FreeBSD Questions <freebsd-questions@freebsd.org>, FreeBSD stable <freebsd-stable@freebsd.org> Subject: Re: make.conf.... Message-ID: <867l1cf0ym.fsf@juil.domain> In-Reply-To: <3ABFEA7A.14086477@mediaone.net> References: <3ABFEA7A.14086477@mediaone.net>
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>>>>> "EML" == Eric M Logan <ericmlogan@mediaone.net> writes:
EML> Perhaps somebody can shed some light on this. Doing a "man
EML> gcc", I see that the "march=" variable supports i386, i486,
EML> pentium, and pentiumpro. I'm trying to build for a k6-2 and
EML> a k6-3 cpu. I would, and can only, use march=pentium right?
EML> I ask because I've seen some people specify march=k6 but
EML> looking through the man pages, I see nothing about the k6*.
EML> Any help would be great, thanks.
EML> PS and yes, I've searched throughly through the list archives w/o
EML> success about this topic so that's not an option. Thanks.
Did you 'info gcc'? man is outdated.
This is from 'info gcc':
`-mcpu=CPU TYPE'
Assume the defaults for the machine type CPU TYPE when scheduling
instructions. The choices for CPU TYPE are:
`i386' `i486' `i586' `i686'
`pentium' `pentiumpro' `k6'
While picking a specific CPU TYPE will schedule things
appropriately for that particular chip, the compiler will not
generate any code that does not run on the i386 without the
`-march=CPU TYPE' option being used. `i586' is equivalent to
`pentium' and `i686' is equivalent to `pentiumpro'. `k6' is the
AMD chip as opposed to the Intel ones.
--
Ilya Martynov
AGAVA Software Company, http://www.agava.com
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