Date: Fri, 31 Aug 2007 16:31:37 +0200 From: Kris Kennaway <kris@FreeBSD.org> To: obrien@freebsd.org, Stefan Lambrev <stefan.lambrev@moneybookers.com>, Roman Divacky <rdivacky@freebsd.org>, pluknet <pluknet@gmail.com>, freebsd-current@freebsd.org, Bj?rn K?nig <bkoenig@cs.tu-berlin.de> Subject: Re: Adding k9 and k10 to bsd.cpu.mk Message-ID: <46D82649.20804@FreeBSD.org> In-Reply-To: <20070831142458.GE79097@dragon.NUXI.org> References: <-3502020561049594852@unknownmsgid> <a31046fc0708291203s3e71d603ka7b34cc320a8166a@mail.gmail.com> <20070829191310.GA50909@freebsd.org> <46D66F83.2050208@moneybookers.com> <20070831142458.GE79097@dragon.NUXI.org>
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David O'Brien wrote: > On Thu, Aug 30, 2007 at 10:19:31AM +0300, Stefan Lambrev wrote: >> k8-sse3, opteron-sse3, athlon64-sse3 > > Yeah, I guess I should add those... though bsd.cpu.mk was architected > with some amount of guessing of what might in the future be useful. > > Is there anything in /usr/src or /usr/ports that actually does anything > with the information? > > . elif ${CPUTYPE} == "prescott" > MACHINE_CPU = sse3 sse2 sse i686 mmx i586 i486 i386 > > . elif ${CPUTYPE} == "nocona" > MACHINE_CPU = sse3 > > for instance. > MACHINE_CPU is supposed to be a complete list of relevant CPU features that ports can use to enable e.g. SSE2 asm optimizations if the CPUTYPE supports it. A number of them exist that do this. Kris
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