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Date: Wed, 21 May 2003 21:44:57 -0400 (EDT)
From: Daniel Eischen <eischen@pcnet1.pcnet.com>
To: Jeremy Messenger <mezz7@cox.net>
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cc: Jon Lido <jlido@goof.com>
cc: freebsd-current@freebsd.org
Subject: Re: gcc/libm floating-point bug?
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On Wed, 21 May 2003, Jeremy Messenger wrote:
> On Wed, 21 May 2003 18:10:14 -0700, David O'Brien <obrien@FreeBSD.ORG> 
> wrote:

[ snip ]

> > Honest question of you -- I'll assume you're subscribed to
> > freebsd-current@.  How have you missed all the warnings from myself and
> > others not to trust the -march=pentium4 optimizations?  I honestly want
> > to know so we can figure out a better way of getting the word out.
> 
> Perhaps, it should be add in the errata? Also, add the comments in the 
> make.conf.
> 
> Cheers,
> Mezz
> 
> >> I'm not sure how CPUTYPE gets handled, but perhaps p4 should expand to - 
> >> march=pentium3, if possible.
> >
> > I feel some will screem if we take away the ability to use
> > -march=pentium4 in places they know for sure will work.  Unix is about
> > mechanisms, not policy.

Why do we set CPUTYPE by default?  This has bit me before also.
It seems to me that NO_CPU_CFLAGS=yes should be the default.
Even -mpentiumpro caused problems for me.

-- 
Dan Eischen