Date: Wed, 10 Jan 2007 05:05:57 -0600 From: "Nikolas Britton" <nikolas.britton@gmail.com> To: "Oliver Fromme" <olli@lurza.secnetix.de> Cc: freebsd-questions@freebsd.org Subject: Re: /etc/make.conf CPUTYPE question (nacona vs. pentium4) Message-ID: <ef10de9a0701100305v15e070acsc6d27ff80c230980@mail.gmail.com> In-Reply-To: <200701090946.l099kYd9095511@lurza.secnetix.de> References: <200701090946.l099kYd9095511@lurza.secnetix.de>
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On 1/9/07, Oliver Fromme <olli@lurza.secnetix.de> wrote:
> Hi,
>
> I'm trying to write an appropriate CPUTYPE entry for
> /etc/make.conf for the following machine:
>
> CPU: Intel(R) Pentium(R) 4 CPU 2.80GHz (2799.95-MHz 686-class CPU)
> Origin = "GenuineIntel" Id = 0xf41 Stepping = 1
> Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,
> SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,
> DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
> Features2=0x441d<SSE3,RSVD2,MON,DS_CPL,CNTX-ID,<b14>>
> Logical CPUs per core: 2
>
> I've read the appropriate sections in the make.conf(5)
> manpage, /usr/share/examples/etc/make.conf and even
> /usr/share/mk/bsd.cpu.mk, but they don't really help.
>
> So far I've been using "CPUTYPE=pentium4", but I wonder
> if "nocona" would be better, however I'm not sure if my
> CPU above qualifies as a nocona one. I think the main
> difference is that nocona supports SSE3, and SSE3 is
> indeed listed in the CPU features above, so ...
>
> Does anybody know for sure? Thank you very much in advance!
>
> Best regards
> Oliver
>
nocona I believe added 64-bit extensions to the processor. Does your
processor have 64-bit extensions? A better make.conf would be
something like this though:
CPUTYPE?=pentium3
CFLAGS+= -mtune=nocona
COPTFLAGS+= -mtune=nocona
or
CPUTYPE?=pentium3
CFLAGS+= -mtune=prescott
COPTFLAGS+= -mtune=prescott
then use an if endif block to override system wide settings, such as
with this example:
.if ${.CURDIR:M*/databases/mysql*}
BROKEN=yes
.endif
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