[yocto] How to disable SIMD extensions (mmx, sse3, ...)?
Adrian Bunk
bunk at stusta.de
Tue Jun 4 04:45:51 PDT 2019
On Tue, Jun 04, 2019 at 09:08:49AM +0200, Mauro Ziliani wrote:
> Hi all.
Hi Mauro,
> I'm working with a Geode LX800, porting an old application Debian-based into
> Yocto Thud.
I assume you are aware that the Geode LX is should still work with the
latest Debian releases.
> I need to disable some multimedia SIMD extensions for gcc compiler.
Why do you want to also disable MMX?
The AMD Geode LX does support MMX (and 3DNow!).
> Where I can do this?
>
> I suppose I have to disable SIMD extensions in conf/machine/geode_lx800.conf
> file (the machine descriptor file), but I cannot find any document about.
>
> Can you help me?
Passing -march=geode to the compiler should enable exactly the
instructions supported by the CPU.
> MZ
cu
Adrian
--
"Is there not promise of rain?" Ling Tan asked suddenly out
of the darkness. There had been need of rain for many days.
"Only a promise," Lao Er said.
Pearl S. Buck - Dragon Seed
More information about the yocto
mailing list