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Date: Sat, 27 Jan 2007 00:24:29 -0500
From: Kris Kennaway <kris@obsecurity.org>
To: "Chris H." <chris#@1command.com>
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Cc: freebsd-stable@freebsd.org
Subject: Re: Why does FBSD always assume it's on an 8080 CPU?
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On Fri, Jan 26, 2007 at 08:45:15PM -0800, Chris H. wrote:
> Hello and thank you for your response...
>=20
> Quoting Mike Jakubik <mikej@rogers.com>:
>=20
> >Chris H. wrote:
> >>
> >>CPU: AMD Athlon(tm) XP (1102.51-MHz 686-class CPU)
> >>Origin =3D "AuthenticAMD"  Id =3D 0x680  Stepping =3D 0
> >>Features=3D0x383fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,P=
GE,MCA,CMOV,PAT,PSE36,MMX,FXSR,SSE> AMD=20
> >>Features=3D0xc0400800<SYSCALL,MMX+,3DNow+,3DNow>
> >>
> >>That I simply build world/kernel with an clean (empty) make.conf
> >>and add the following during port(s) building to attain optimum results
> >>given my CPU for this current biuld?
> >>
> >>CPUTYPE?=3Dpentium4
> >>
> >>COPTFLAGS=3D -march=3Dpentium4 -mmmx -m3dnow -m3dnow+ -msse -msse2
> >
> >Why are you using "pentium4" with an Athlon XP CPU? use "athlonxp"=20
> >instead. Also, don't modify the COPTFLAGS.
> >
>=20
> Ooops. I've changed it to:
>=20
> CPUTYPE?=3Dathlon-4
> CFLAGS+=3D -march=3Dathlon-4 -mmmx -m3dnow -m3dnow+ -msse -msse2
>=20
> Look a little better? :)

No, the CFLAGS is still entirely superfluous.  Just setting CPUTYPE
will DTRT.

Kris

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