Date: Mon, 13 Jun 2005 14:24:20 -0500 From: Jonathan Noack <noackjr@alumni.rice.edu> To: =?ISO-8859-1?Q?K=F6vesd=E1n_G=E1bor?= <gabor.kovesdan@t-hosting.hu> Cc: Mike Jakubik <mikej@rogers.com>, stable@freebsd.org Subject: Re: CPUTYPE for Sempron Message-ID: <42ADDD64.4070901@alumni.rice.edu> In-Reply-To: <42ADD87E.5010405@t-hosting.hu> References: <3502.172.16.0.199.1118688995.squirrel@172.16.0.1> <42ADD87E.5010405@t-hosting.hu>
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On 06/13/05 14:03, K=F6vesd=E1n G=E1bor wrote:
> use CFLAGS=3D-march=3Datlhlon-xp. CPUTYPE overrides CFLAGS, so it doesn=
't=20
> provide You such sophisticated optimizations.
> If You plan to make buildworld, use:
> CFLAGS=3D-O2 -pipe -march=3Dathlon-xp
> Anyway, if You just use ports collection, and don't make buildworld
> CFLAGS=3D-O3 -pipe -march=3Dathlon-xp
> is also reliable, but it might make some trouble when making buildworld=
=2E
CPUTYPE doesn't override CFLAGS. Read /usr/share/mk/bsd.cpu.mk.=20
Specifically, the second to last line:
CFLAGS +=3D ${_CPUCFLAGS}
Earlier in the file you see:
_CPUCFLAGS =3D -march=3D${CPUTYPE}
So in effect what is happening:
CFLAGS +=3D -march=3Dathlon-xp
I use the following with no issues on 5.x and CURRENT:
CPUTYPE ?=3D athlon-xp
CFLAGS =3D -O2 -fno-strict-aliasing -pipe
COPTFLAGS =3D -O2 -fno-strict-aliasing -pipe
> Mike Jakubik wrote:
>> Which CPUTYPE should be used for the AMD Sempron CPU? I'm assuming=20
>> this is
>> similiar to an athlon-xp. Perhaps an alias or a new entry should be
>> created for this CPU?
>>
>> ---
>> CPU: AMD Sempron(tm) Processor 3000+ (1799.81-MHz 686-class CPU)
>> Origin =3D "AuthenticAMD" Id =3D 0x10fc0 Stepping =3D 0
>> Features=3D0x78bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR=
,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2>=20
>>
>> AMD Features=3D0xc0500000<NX,AMIE,DSP,3DNow!>
--=20
Jonathan Noack | noackjr@alumni.rice.edu | OpenPGP: 0x991D8195
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