Date: Tue, 12 Sep 2006 14:38:57 -0500
From: Brooks Davis <brooks@one-eyed-alien.net>
To: "Marc G. Fournier" <freebsd@hub.org>
Cc: freebsd-stable@freebsd.org
Subject: Re: optimization levels for 6-STABLE build{kernel,world}
Message-ID: <20060912193856.GA49540@lor.one-eyed-alien.net>
In-Reply-To: <20060912161603.R1031@ganymede.hub.org>
References: <20060912161603.R1031@ganymede.hub.org>
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--Dxnq1zWXvFF0Q93v Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Sep 12, 2006 at 04:22:51PM -0300, Marc G. Fournier wrote: >=20 > What are ppl currently using for CFLAGS/COPTFLAGS in /etc/make.conf for= =20 > building kernel/world? I know awhile back it wasn't recommended to go=20 > above -O2, for instance, but suspect that has changed ... ? Nothing above -O2 is supported. Period. If you try another value and something breaks, don't report it unless you can verify it happens with -O or -O2. For many applications, -O2 will perform better than -O3 so you need to benchmark individual applications. For most applications, there's simply no point. -- Brooks --Dxnq1zWXvFF0Q93v Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (FreeBSD) iD8DBQFFBwzQXY6L6fI4GtQRAr+WAJ4rWEsmLHEYk1jkv1om7X+JV716dACfbDDM pdPRE8w9/OqhGdl9fGmAD20= =+UK3 -----END PGP SIGNATURE----- --Dxnq1zWXvFF0Q93v--
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