[Interest] How do you want to select exactly C++11 with GCC 6+?

[Frédéric Marchal]

On Thursday 09 March 2017 14:13:28 Thiago Macieira wrote:
> This is a straw poll to see if we should change qmake's behaviour for Qt
> 5.9.
> 
> GCC 6 and ICC 17, in the absence of -std= comipler options, default ot
> C++14. So I have two questions:
> 
> 1) is there a need for qmake to provide a way to select *exactly* C++11, not
> a later, available version?
> 
> 2) if the answer is "yes", how would you prefer to do so?
> 	option I:		CONFIG += c++11
> 	option II:	CONFIG -= c++14		(obviously disables later editions 
too)

I'm a bit lost with all that was said in this thread and I think it might be 
important for qmake usability :-)

As a naive user, if I want to use features available in C++11 such as for-
range, auto, lambda… I'll simply add CONFIG+=c++11. That's what is required to 
compile my source code. If it comes with more features, then let it be so.

If I must make sure that I don't accidentally use C++14 (or later) features 
that are not supported by an older compiler, I'll add CONFIG-=c++14.

Could somebody kindly summarize the reasons for adding more options such as 
min_c++ or c++latest or restricting to only one C++ version?

Thanks,

Frederic