[Interest] Qt 5.5 and Red Hat 5

[Nikos Chantziaras]

On 23/03/15 16:10, Thiago Macieira wrote:
> On Monday 23 March 2015 14:18:34 Nikos Chantziaras wrote:
>> On 23/03/15 01:43, Thiago Macieira wrote:
>>> On Sunday 22 March 2015 11:36:37 Nikos Chantziaras wrote:
>>>> On 21/03/15 20:19, Thiago Macieira wrote:
>>>>> RHEL 6.6 comes with glibc 2.12, which isn't affected by these issues.
>>>>> See
>>>>> http://distrowatch.com/table.php?distribution=redhat
>>>>>
>>>>> Again, the problem is RHEL 5, which has glibc 2.5.
>>>>
>>>> How is the C++11 situation here though? I assume RHEL 6 support in Qt
>>>> comes without C++11 due to the ABI incompatibilities between the toolset
>>>> and vanilla RHEL?
>>>
>>> The C++11 situation is dictated by the compiler you choose to use for your
>>> application.
>>
>> Not the library?
>
> What library?
>
> If you're talking about Qt, no, Qt does not force you to choose to use C++11
> or not. You choose and Qt will adapt.
>
> If you're talking about some other library, I can't give you advice.

I mean the standard C++ library. In this case, it's implemented by 
libstdc++.

The RH dev toolset comes with a more recent GCC version compared to 
vanilla RHEL, but does it also include a newer libstdc++? (Compiler and 
standard library need to work in tandem, so one would assume yes?)

There's ABI differences between libstdc++ versions when using C++11, so 
one has to wonder what happens when using C++11 in Qt (which was built 
with the RH dev toolset) and then the resulting application is used on 
vanilla RHEL without the toolset...