Date: Fri, 9 Jun 2006 15:56:04 -0500 From: "Nikolas Britton" <nikolas.britton@gmail.com> To: freebsd-questions@freebsd.org Subject: Re: Correct CPUTYPE= for Intel Celeron 2.50GHz (2500.10-MHz 686-class CPU) Message-ID: <ef10de9a0606091356w21697b03i9fccd09a6174b153@mail.gmail.com> In-Reply-To: <20060609132040.B3097B825@shodan.nognu.de> References: <20060609132040.B3097B825@shodan.nognu.de>
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On 6/9/06, Frank Steinborn <steinex@nognu.de> wrote: > Hello, > > can someone tell what the right choice for CPUTYPE in /etc/make.conf > is for that CPU? > CPUTYPE?=pentium2 CFLAGS+= -mtune=prescott COPTFLAGS+= -mtune=prescott I find that this produces faster, and safer, code then -march=pentium4, etc. alone. you can view all the gcc flags here: http://gcc.gnu.org/onlinedocs/gcc-3.4.6/gcc/i386-and-x86_002d64-Options.html > And, is it safe to build kernel and world with --march= too? > With the gcc options I gave to you above yes. -- BSD Podcasts @: http://bsdtalk.blogspot.com/ http://freebsdforall.blogspot.com/
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