[MinnowBoard] [MinnowBoardMax] gcc flags

[Darren Hart]

Can you explain what you mean by does not work? Are you still getting
illegal instructions? You may also need to set -mtune. This is what we
use for the intel-corei7-64 BSP in the Yocto Project which enables the
Nehalem and Baytrail and later CPUs (including the E3825 on the
MinnowBoard MAX):

-march=corei7 -mtune=corei7 -mfpmath=sse -msse4.2

Thanks,

Darren

On 3/3/15 11:13 AM, Benjamin Schubert wrote:
> Hey, 
> 
> Sorry for the long delay. I tried with -march=corei7 without any
> success. that does not work either.
> 
> Anybody found something else ?
> 
> Thanks a lot
> 
> Le lun. 23 févr. 2015 à 23:00, Darren Hart <dvhart at linux.intel.com
> <mailto:dvhart at linux.intel.com>> a écrit :
> 
>     Native uses your host CPU, if you want something tailored for the
>     MinnowBoard MAX Bay Trail SoC, you should use march=corei7.
>     -- 
>     Darren Hart
>     Intel Open Source Technology Center
> 
>     From: Michael Jarvis <mjarvis.tx.08 at gmail.com
>     <mailto:mjarvis.tx.08 at gmail.com>>
> 
>     Reply-To: MinnowBoard Development and Community Discussion
>     <elinux-minnowboard at lists.elinux.org
>     <mailto:elinux-minnowboard at lists.elinux.org>>
>     Date: Monday, February 23, 2015 at 11:53 AM
> 
>     To: MinnowBoard Development and Community Discussion
>     <elinux-minnowboard at lists.elinux.org
>     <mailto:elinux-minnowboard at lists.elinux.org>>
>     Subject: Re: [MinnowBoard] [MinnowBoardMax] gcc flags
> 
>         I usually use "-mtune=native". Does that not work for you?
> 
> 
> 
>         On Sat, Feb 21, 2015 at 3:58 PM, Benjamin Schubert
>         <ben.c.schubert at gmail.com <mailto:ben.c.schubert at gmail.com>> wrote:
> 
>             Hey everyone !
> 
>             I've been strugling for a while on setting up correct gcc
>             flags for the minnowboard max.
> 
>             I'm using GCC 4.9.2 with CFLAGS="-march=silvermont" and I
>             get illegall instructions on some programs.
> 
>             Has anyone managed to have working CFLAGS that are not
>             -march=native ?
> 
>             Thanks a lot
> 
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> 
> 
> 
> 
>         -- 
>         *Michael Jarvis*
>         McKinney, TX USA
>         http://about.me/michael.a.jarvis
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> 
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-- 
Darren Hart
Intel Open Source Technology Center