Date: Wed, 7 Mar 2001 12:28:29 +0100 (CET) From: Claude Buisson <ubc@paris.framatome.fr> To: Kris Kennaway <kris@obsecurity.org> Cc: Jordan Hubbard <jkh@osd.bsdi.com>, ohartman@klima.physik.uni-mainz.de, freebsd-stable@FreeBSD.ORG Subject: Re: ARCH flag in new make.conf Message-ID: <Pine.BSF.4.10.10103071224110.85885-100000@eve.framatome.fr> In-Reply-To: <20010307025918.A37732@mollari.cthul.hu>
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On Wed, 7 Mar 2001, Kris Kennaway wrote: > On Wed, Mar 07, 2001 at 11:51:47AM +0100, Claude Buisson wrote: > > Please explain: > > > > If CPUTYPE is potentially dangerous, why make its use automatic ? needing > > a special flag (commented OUT in /etc/default/make.conf) to deny it. > > > > Please, revert the default: do NOT use CPUTYPE optimization in a standard > > build, and let the user ADD it in his /etc/make.conf if he wants to > > (what I do already by tweaking CFLAGS...). > > Okay, you're getting worked up here for nothing. There are a couple > of points: > > * Jordan's warning added to make.conf is under debate, and I think > it's excessive. > > * CPUTYPE does nothing by default unless you set it. Think of it as > just a handy way to add the correct -m<foo> flags to your CFLAGS > setting without having to grep through info pages looking for the > right values. It also does a bit more than this by enabling asm code > in OpenSSL and (soon) some ports, but again, only if you specifically > enable it. > > > Furthermore: > > > > Does the current setting implying the use of CPUTYPE to build releases ? > > (I probably do not want a march=pentiumpro to build software intended > > to run on a 386). > > If you don't set CPUTYPE, your software will continue to run on all > i386-class CPUs. No defaults have changed here, nor will they for as > long as FreeBSD continues to support the 386 CPU. > > Kris > Thanks for the explanation, but I have another question (I know, I am dumb): given that the optimization MUST be activated by a CPUTYPE=XXX in the user's /etc/make.conf, what is the use of NO_CPU_FLAGS ? just needing 2 lines instead of 0 in /etc/make.conf ? Claude Buisson To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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