Re: [boost] [EXTERNAL] Clang Darwin trunk Cray 8.0 and max_digits10 support - problem in config?

Subject: Re: [boost] [EXTERNAL] Clang Darwin trunk Cray 8.0 and max_digits10 support - problem in config?
From: Belcourt, Kenneth (kbelco_at_[hidden])
Date: 2012-07-10 00:34:00

On Jul 9, 2012, at 4:56 PM, Paul A. Bristow wrote:

>> -----Original Message-----
>> From: boost-bounces_at_[hidden] [mailto:boost-bounces_at_[hidden]] On Behalf Of Belcourt,
>> Kenneth
>> Sent: Monday, July 09, 2012 11:21 PM
>> To: <boost_at_[hidden]>
>> Subject: Re: [boost] [EXTERNAL] Clang Darwin trunk Cray 8.0 and max_digits10 support - problem in
>> config?
>> 
>> 
>> On Jul 9, 2012, at 10:03 AM, Paul A. Bristow wrote:
>> 
>>>> -----Original Message-----
>>>> From: boost-bounces_at_[hidden]
>>>> [mailto:boost-bounces_at_[hidden]] On Behalf Of Michel
>>> Morin
>>>> Sent: Monday, July 09, 2012 3:52 PM
>>>> To: boost_at_[hidden]
>>>> Subject: Re: [boost] Clang Darwin trunk Cray 8.0 and max_digits10 support - problem in config?
>>>> 
>>>> Paul A. Bristow wrote:
>>>>> for Clang the messages are
>>>>> 
>>>>> In file included from ../libs/math/test/zztest_max_digits10.cpp:27:
>>>>> In file included from ../boost/config.hpp:40:
>>>>> ../boost/config/select_stdlib_config.hpp:18:12: fatal error: 'cstddef'
>>>>> file not found #  include <cstddef>
>>>>> 
>>>>> In file included from ../libs/math/test/ztest_max_digits10.cpp:27:
>>>>> In file included from ../boost/config.hpp:40:
>>>>> ../boost/config/select_stdlib_config.hpp:18:12: fatal error: 'cstddef'
>>>>> file not found
>>>> 
>>>> boost/config/select_stdlib_config.hpp includes <cstddef> to determine
>>>> which stdlib is used. It
>>> seems that,
>>>> due to some misconfiguration in the test runner, clang cannot find <cstddef>.
>>>> In my system (Mac OS X 10.7, clang trunk, libc++ and boost trunk), the two tests run fine.
>>> 
>>> Well, that's reassuring :-)
>>> 
>>> Is there anything else I should do to alert the test runners that very
>>> many tests will now fail on their platforms until this is corrected?
>> 
>> 
>> This is, I'm afraid, out of the test runners hands.  The issue is that clang (the same binary)
> works fine on
>> these platforms if we disable c++11, not sure why enabling c++11 triggers missing cstddef header
>> problems.  We may need to followup with the clang developers to see if this behavior is known /
> expected
>> or considered a bug.
> 
> Well - I fear it will prevent any useful Boost.Test results on this configuration until it is
> resolved.  If really, really necessary, I could revert this change for a short time until that is
> done.

Michel has sent some very helpful instructions that should help me make progress.  Please leave you change for now while I try to get clang c++11 support going.

> (Does the fact the Cray test runner has the same problem give any clues?)

They are an entirely separate entity so no clues there.

-- Noel