RTEMS Tools on 5 release can't be build with modern LLVM

[Christian MAUDERER]

Thanks for having a look at it. I created the ticket and updated 
rtems-tools and rtems-source-builder like described.

Best regards

Christian

Am 17.08.21 um 00:20 schrieb Chris Johns:
> Looks good and thank you for sorting this out.
> 
> Chris
> 
> On 17/8/21 1:17 am, Christian MAUDERER wrote:
>> Am 16.08.21 um 17:12 schrieb Joel Sherrill:
>>> On Mon, Aug 16, 2021 at 10:08 AM Christian MAUDERER
>>> <christian.mauderer at embedded-brains.de> wrote:
>>>>
>>>> Hello Joel,
>>>>
>>>> Am 16.08.21 um 17:03 schrieb Joel Sherrill:
>>>>> On Mon, Aug 16, 2021 at 9:49 AM Christian MAUDERER
>>>>> <christian.mauderer at embedded-brains.de> wrote:
>>>>>>
>>>>>> Hello,
>>>>>>
>>>>>> I noted that I can't build the RTEMS 5 toolchain if I have a modern LLVM
>>>>>> installed using the RTEMS source builder. Therefore I would like to
>>>>>> backport the patch 37ad446d9dce3 ([1]) to the 5 branch. Is that OK? If
>>>>>> someone acknowledges it, I would do the following steps without further
>>>>>> review (but of course with testing):
>>>>>>
>>>>>> 1. Create a ticket for the problem.
>>>>>> 2. In rtems-tools: Cherry pick the patch 37ad446d9dce3 to the 5 branch.
>>>>>> 3. In rtems-source-builder: Backport the patch 91932d0a0 [2] to the 5
>>>>>> branch (or rather re-create it because it will be a different commit and
>>>>>> a different hash).
>>>>>
>>>>> I'm ok with this. I remember doing a patch for the opposite direction.
>>>>> I couldn't
>>>>> build on an older gcc because it assumed a different language version as
>>>>> default. gcc 4.8 as on CentOS 7 assumes C++03. Newer versions assume C++11
>>>>> as the base. Similarly newer gcc's seem to default to C11.
>>>>
>>>> Thanks. I'll wait a bit more before adding the patches in case someone
>>>> else want's to object.
>>>
>>>
>>> Good plan.
>>>
>>>>>
>>>>> I posted a few weeks ago that users should really be careful to always use
>>>>> -std and consciously pick what they want.
>>>>
>>>> In this case, the version of the standard depends quite a lot on the
>>>> LLVM headers. LLVM seems to love using new features.
>>>
>>> Then this is probably not the first time we will face this.
>>
>> Definitively not. It is only a backport of a patch so I had that problem already
>> on another system. I only missed to add it to the 5 branch back then.
>>
>> Best regards
>>
>> Christian
>>
>>>
>>> --joel
>>>
>>>> Best regards
>>>>
>>>> Christian
>>>>
>>>>>
>>>>> --joel
>>>>>
>>>>>>
>>>>>> Best regards
>>>>>>
>>>>>> Christian
>>>>>>
>>>>>> [1]
>>>>>> https://git.rtems.org/rtems-tools/commit/?id=37ad446d9dce3438d6d32e1caf56d3fdccdd2ad0
>>>>>>
>>>>>>
>>>>>> [2]
>>>>>> https://git.rtems.org/rtems-source-builder/commit/?id=91932d0a0c86400366f9c75a62123b6488ff458a
>>>>>>
>>>>>> -- 
>>>>>> --------------------------------------------
>>>>>> embedded brains GmbH
>>>>>> Herr Christian MAUDERER
>>>>>> Dornierstr. 4
>>>>>> 82178 Puchheim
>>>>>> Germany
>>>>>> email: christian.mauderer at embedded-brains.de
>>>>>> phone: +49-89-18 94 741 - 18
>>>>>> fax:   +49-89-18 94 741 - 08
>>>>>>
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>>>>
>>>> -- 
>>>> --------------------------------------------
>>>> embedded brains GmbH
>>>> Herr Christian MAUDERER
>>>> Dornierstr. 4
>>>> 82178 Puchheim
>>>> Germany
>>>> email: christian.mauderer at embedded-brains.de
>>>> phone: +49-89-18 94 741 - 18
>>>> fax:   +49-89-18 94 741 - 08
>>>>
>>>> Registergericht: Amtsgericht München
>>>> Registernummer: HRB 157899
>>>> Vertretungsberechtigte Geschäftsführer: Peter Rasmussen, Thomas Dörfler
>>>> Unsere Datenschutzerklärung finden Sie hier:
>>>> https://embedded-brains.de/datenschutzerklaerung/
>>

-- 
--------------------------------------------
embedded brains GmbH
Herr Christian MAUDERER
Dornierstr. 4
82178 Puchheim
Germany
email: christian.mauderer at embedded-brains.de
phone: +49-89-18 94 741 - 18
fax:   +49-89-18 94 741 - 08

Registergericht: Amtsgericht München
Registernummer: HRB 157899
Vertretungsberechtigte Geschäftsführer: Peter Rasmussen, Thomas Dörfler
Unsere Datenschutzerklärung finden Sie hier:
https://embedded-brains.de/datenschutzerklaerung/