From owner-cvs-all Wed Mar 7 3:11:15 2001 Delivered-To: cvs-all@freebsd.org Received: from mobile.wemm.org (c1315225-a.plstn1.sfba.home.com [65.0.135.147]) by hub.freebsd.org (Postfix) with ESMTP id C6AA137B719; Wed, 7 Mar 2001 03:11:10 -0800 (PST) (envelope-from peter@netplex.com.au) Received: from netplex.com.au (localhost [127.0.0.1]) by mobile.wemm.org (8.11.1/8.11.1) with ESMTP id f27BB3h75683; Wed, 7 Mar 2001 03:11:03 -0800 (PST) (envelope-from peter@netplex.com.au) Message-Id: <200103071111.f27BB3h75683@mobile.wemm.org> X-Mailer: exmh version 2.2 06/23/2000 with nmh-1.0.4 To: Kris Kennaway Cc: Jordan Hubbard , jkh@FreeBSD.org, cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: -march considered harmful? (Re: cvs commit: src/etc/defaults make.conf) In-Reply-To: <20010307015756.A36829@mollari.cthul.hu> Date: Wed, 07 Mar 2001 03:11:03 -0800 From: Peter Wemm Sender: owner-cvs-all@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Kris Kennaway wrote: > I still think that putting a warning saying, in effect, "NEVER USE > THIS!!" on the basis of one report claimed to be the result of using > -march=i686 is a huge dose of FUD and flies in the face of the body of > experience suggesting that -march is, in fact, quite safe to use > universally. I just read the warning text, and IMHO it goes *way* over the top. There is no corresponding warning about using -O2 in CFLAGS, for example, and we *know* that -O2 does break things. I'd be a lot happier with something like: WARNING! Some folks suspect there may be problems with some CPUTYPE settings on the i386 family. If you are experiencing problems, please try turning any CPUTYPE optimizations off to eliminate it as a possibility. Cheers, -Peter -- Peter Wemm - peter@FreeBSD.org; peter@yahoo-inc.com; peter@netplex.com.au "All of this is for nothing if we don't go to the stars" - JMS/B5 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message