Date: Tue, 12 Sep 2006 15:31:20 -0400
From: Michael Butler <imb@protected-networks.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: <45070B08.6010507@protected-networks.net>
In-Reply-To: <20060912161603.R1031@ganymede.hub.org>
References: <20060912161603.R1031@ganymede.hub.org>
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Marc G. Fournier wrote: > What are ppl currently using for CFLAGS/COPTFLAGS in /etc/make.conf for > building kernel/world? I know awhile back it wasn't recommended to go > above -O2, for instance, but suspect that has changed ... ? CFLAGS=-O2 -pipe -fno-strict-aliasing COPTFLAGS=-O2 -pipe -fno-strict-aliasing CPUTYPE?=prescott .. just works(tm) for an Intel T-2300 dual core ;-) Using -O3 will get you into bother with the amount of inlining the compiler wants to do to the kernel, Michael
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