Re: [PATCH 05/10] Remove __need macros from errno.h (__need_Emath, __need_error_t).

[Florian Weimer <fweimer@redhat.com>]

On 05/15/2017 10:11 AM, Andreas Schwab wrote:
> On Mai 12 2017, Florian Weimer <fweimer@redhat.com> wrote:
> 
>> On 05/11/2017 07:25 PM, Andreas Schwab wrote:
>>> On Mai 11 2017, Florian Weimer <fweimer@redhat.com> wrote:
>>>
>>>> On 05/11/2017 05:42 PM, Andreas Schwab wrote:
>>>>> On Mai 11 2017, Joseph Myers <joseph@codesourcery.com> wrote:
>>>>>
>>>>>> * Requiring GCC 5 as minimum GCC version for building glibc on the basis
>>>>>> of what's maintained upstream (though that's more aggressive than we've
>>>>>> previously been on increasing GCC version requirements).  (Versions before
>>>>>> 4.9 don't work with build-many-glibcs.py anyway.)
>>>>>
>>>>> openSUSE Leap 42.2 (aka SLE 12) has gcc 4.8 as the system compiler.
>>>>
>>>> Is it possible to use the Toolchain Module to get a newer GCC version?
>>>
>>> Both Leap and the toolchain module offer gcc5 and gcc6.  But what you
>>> call as gcc will remain 4.8.
>>
>> Do you think that results in a major inconvenience?
> 
> You have to remember to point both CC and CXX to the newer compiler.

Sure, but that doesn't answer my question.  I think it's just a minor 
burden which isn't much of a problem and should not block bumping the 
minimum GCC requirement.

Do you agree?

Is the toolchain module GCC available on PATH?  Maybe we could add some 
fallback detection logic for a suitable compiler, similar to how a 
Bourne shell is located on Solaris.

Thanks,
Florian