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Date:      Thu, 18 Jan 2001 03:12:00 -0800
From:      Kris Kennaway <kris@FreeBSD.ORG>
To:        Micke Josefsson <mj@isy.liu.se>
Cc:        freebsd-hackers@FreeBSD.ORG
Subject:   Re: Can I do a make world only for PentiumPro?
Message-ID:  <20010118031200.A40720@citusc17.usc.edu>
In-Reply-To: <XFMail.010118091516.mj@isy.liu.se>; from mj@isy.liu.se on Thu, Jan 18, 2001 at 09:15:16AM %2B0100
References:  <XFMail.010118091516.mj@isy.liu.se>

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On Thu, Jan 18, 2001 at 09:15:16AM +0100, Micke Josefsson wrote:

> Is it possible to use my PentiumPro machine to do a 'make buildworld' for=
 a
> target machine that only is a 486? When compiling the kernel I can select=
 to
> omit 386/486-thingies and optimise the binaries for 686. Can I do the sam=
e for
> the 'world'-target?=20

By default the output of 'make world' will run on all platforms from
i386 on up. You have to add special compiler settings to CFLAGS in
/etc/make.conf to make the compiler output code optimized for a
specific CPU.

Kris

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