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Subject: Re: [OMPI users] Help: OpenMPI Compilation in Raspberry Pi
From: George Bosilca (bosilca_at_[hidden])
Date: 2013-01-10 17:39:40


A little bit of google shows that this is a known issue. ldrex and strex are not included in the default instruction set gcc uses (arm6). One has to add the compile flag "-march=argv6k" to successfully compiles.

  George.

PS: For more info: http://www.raspberrypi.org/phpBB3/viewtopic.php?f=9&t=4256&start=250

On Jan 10, 2013, at 16:20 , Jeff Squyres (jsquyres) <jsquyres_at_[hidden]> wrote:

> Mmmm. Let's rope in our ARM expert here...
>
> Leif, do you know what the issue is here?
>
>
> On Jan 3, 2013, at 4:28 AM, Lee Eric <openlinuxsource_at_[hidden]> wrote:
>
>> Hi,
>>
>> I am going to compile OpenMPI 1.6.3 in Raspberry Pi and encounter following errors.
>>
>> make[2]: Entering directory `/root/openmpi-1.6.3/opal'
>> CC class/opal_bitmap.lo
>> CC class/opal_free_list.lo
>> CC class/opal_hash_table.lo
>> CC class/opal_list.lo
>> CC class/opal_object.lo
>> /tmp/ccniCtj0.s: Assembler messages:
>> /tmp/ccniCtj0.s:83: Error: selected processor does not support ARM mode `ldrex r3,[r1]'
>> /tmp/ccniCtj0.s:86: Error: selected processor does not support ARM mode `strex r4,r0,[r1]'
>> make[2]: *** [class/opal_object.lo] Error 1
>> make[2]: Leaving directory `/root/openmpi-1.6.3/opal'
>> make[1]: *** [all-recursive] Error 1
>> make[1]: Leaving directory `/root/openmpi-1.6.3/opal'
>> make: *** [all-recursive] Error 1
>>
>> Can anyone have any idea to fix that issue?
>>
>> I'm using Fedora 17 rootfs and kernel version is "Linux fedora-arm 3.6.11+ #1 PREEMPT Wed Jan 2 15:14:23 CST 2013 armv6l armv6l armv6l GNU/Linux".
>>
>> Thanks.
>>
>> Eric Lee
>> _______________________________________________
>> users mailing list
>> users_at_[hidden]
>> http://www.open-mpi.org/mailman/listinfo.cgi/users
>
>
> --
> Jeff Squyres
> jsquyres_at_[hidden]
> For corporate legal information go to: http://www.cisco.com/web/about/doing_business/legal/cri/
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>
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