problem building libbsd with waf

[Christian Mauderer]

Am 30.08.2017 um 23:32 schrieb Jeff Mayes:
> 
> 
>> -----Original Message-----
>> From: Christian Mauderer [mailto:list at c-mauderer.de]
>> Sent: Wednesday, August 30, 2017 2:38 PM
>> To: Jeff Mayes <Jeff.Mayes at OARcorp.com>; devel at rtems.org
>> Subject: Re: problem building libbsd with waf
>>
>> Am 29.08.2017 um 17:39 schrieb Jeff Mayes:
>>> Hi
>>>
>>>
>>>
>>> I'm trying to build rtems and rtems-libbsd.  It all goes fine until
>>> the waf build fails with this:
>>>
>>> /  Checking for RTEMS CPU options header   : no/
>>>
>>>
>>>
>>> This occurs for both i386 and arm.  Part of the config.log is below.
>>>
>>>
>>>
>>> Any ideas?
>>>
>>> Thanks
>>> Jeff
>>>
>>
>> Hello Jeff,
>>
>> just tried to build the xylinx_zynq_zedboard BSP without any problems.
>> What is really odd from your log is the
>>
>>> err: Assembler messages:
>>>
>>> Fatal error: invalid -march= option: `armv7-a'
>>
>> How did you build your tool chain?
>>
>> For my test, I used one from a slightly outdated (about a month) RSB revision
>> 295c197b51 because I had that one already built. libbsd and RTEMS are about
>> one month old too. Which revision Do you use? On what host system do you
>> work?
>>
>> Kind regards
>>
>> Christian
> 
> I'm using a CentOS 7 VM and I've built it successfully on previous occasions. 
> 
> I built it using RSB which was updated last week, and the pull of rtems and libbsd are from just a couple of days ago.
> 
> Thanks
> Jeff
> 

Hello Jeff,

CentOS 7 should be fine. It's been some time since I built RTEMS on it
but it never made any problems.

I tried to recompile with the latest head of RSB, libbsd and RTEMS on my
OpenSUSE 42.2 machine. No problems here. The versions i tried are:

RSB: 4f364ef763f6c08bf9ba7ac3ede2a4288fdd517c
RTEMS: 3663be53521e29981f3617ef99c7f8e3cec7036d
libbsd: 666a56883ad2ae7757689f28cee2b9b80582bcd6

Could you try to compile a minimal sample program to make sure that you
don't have any problem with the compiler. Something like

    int main (void) {
    	return 0;
    }

and compile it with

    arm-rtems4.12-g++ -march=armv7-a test.c

That should work without any (relevant) errors. I have received a
warning about the linker not finding _start but an a.out has been generated.

Kind Regards

Christian

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