From owner-freebsd-questions Thu Jul 6 17:52:14 2000 Delivered-To: freebsd-questions@freebsd.org Received: from eagle.prod.itd.earthlink.net (eagle.prod.itd.earthlink.net [207.217.120.24]) by hub.freebsd.org (Postfix) with ESMTP id 4401B37BADC for ; Thu, 6 Jul 2000 17:52:12 -0700 (PDT) (envelope-from eogren@earthlink.net) Received: from rod.darktech.org (ip143.cambridge2.ma.pub-ip.psi.net [38.32.112.143]) by eagle.prod.itd.earthlink.net (8.9.3-EL_1_3/8.9.3) with ESMTP id RAA04695; Thu, 6 Jul 2000 17:52:08 -0700 (PDT) Received: (from eogren@localhost) by rod.darktech.org (8.10.1/8.10.1) id e670pkc01406; Thu, 6 Jul 2000 20:51:46 -0400 (EDT) Date: Thu, 6 Jul 2000 20:51:46 -0400 From: Eric Ogren To: Siegbert Baude Cc: "freebsd-questions@freebsd.org" Subject: Re: compilation options for -make world- Message-ID: <20000706205146.A270@earthlink.net> References: <3961E085.115D4A96@gmx.de> <20000705215634.A2261@earthlink.net> <396428E8.5FC5455E@gmx.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 1.0i In-Reply-To: <396428E8.5FC5455E@gmx.de>; from siegbert.baude@gmx.de on Thu, Jul 06, 2000 at 08:36:24AM +0200 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Well, the biggest example is that make world may blow up in weird places when you're using different CFLAGS (or possibly even die with weird signals). I suppose that other weird behavior in system binaries compiled with non-standard optimizations could occur as well, although I haven't seen this reported on the mailing lists. Eric On Thu, Jul 06, 2000 at 08:36:24AM +0200, Siegbert Baude wrote: > > > Look into man cc, what flags are possible. You would like -march=i686 > > > and maybe -O3 for some optimization. > > Eric Ogren wrote: > > > > ..Of course if you do this and things start breaking, you will get no > > support from the lists. We only support using CFLAGS="-O -pipe". > > I didn't know this. Under which circumstances are there problems to be > expected? > What about the option -mpentiumpro? Is it possibly dangerous, too? > > Ciao > Siegbert > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message