Different features on different CPU cores?!

[Zhihao Yuan]

On Wed, May 30, 2012 at 9:43 AM, Olivier Smedts <olivier at gid0.org> wrote:
> 2012/5/30 Zhihao Yuan <lichray at gmail.com>:
>> OK... I see what happened:
>>
>> ~> cc a.c
>> ~> gcc46 a.c
>> In file included from a.c:1:0:
>> /usr/local/lib/gcc46/gcc/x86_64-portbld-freebsd8.3/4.6.3/include/pmmintrin.h:32:3:
>> error: #error "SSE3 instruction set not enabled"
>> ~> clang a.c
>> In file included from a.c:1:
>> /usr/local/bin/../lib/clang/3.1/include/pmmintrin.h:28:2: error: "SSE3
>>      instruction set not enabled"
>> #error "SSE3 instruction set not enabled"
>>  ^
>> 1 error generated.
>> ~> gcc46 -msse3 a.c
>> ~> clang -msse3 a.c
>> ~>
>>
>> So the chromium port does not define -msse3/-mssse3 explicitly, so it
>> does not work with gcc46/clang.
>
> Isn't it /usr/share/mk/bsd.cpu.mk's job ?
> # make -V CPUTYPE
> core2
> # make -V MACHINE_CPU
> ssse3 sse3 amd64 sse2 sse mmx
>
> I don't know if that's for the base system solely or if it works for
> ports too, but at least on this computer I can compile chromium
> 19.0.1084.52. Maybe you use CPUTYPE?=native, which is unsupported by
> bsd.cpu.mk.

Err, I put nothing on CPUTYPE. Long time ago, this variable only
affects base. Thanks.

>
> --
> Olivier Smedts                                                 _
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-- 
Zhihao Yuan, nickname lichray
The best way to predict the future is to invent it.
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