>________________________________________
> Lähettäjä: development-bounces+tuukka.turunen=theqtcompany....@qt-project.org
> <development-bounces+tuukka.turunen=theqtcompany.com@qt-
> project.org> käyttäjän puolestaRafael Roquetto <[email protected]>
> Lähetetty: 19. helmikuuta 2015 17:03
> Vastaanottaja: Björn Breitmeyer
> Kopio: [email protected]
> Aihe: Re: [Development] Proposal: Deprecating platforms in Qt 5.6 that don't
> support lambda
>
> On Thu, Feb 19, 2015 at 03:11:05PM +0100, Björn Breitmeyer wrote:
> <snip>
> > So long point short, i would like to dicuss this for a move to Qt6 because
> > of
> > this and the points Andre mentioned already.
> +1
I think we should be able to address deprecation of old platform and compiler
version also during the lifespan of Qt 5.x. I also do not think that time is
yet right to make Qt 6, even though we are approaching the final Qt 4 releases
:)
In Qt 5.5 we are dropping quite many older platform and compiler versions in
order to be able to support new, so doing same in Qt 5.6 is completely
reasonable to consider.
Stating this, I am not yet taking stand whether we need to go "all-in" with
C++11 in Qt 5.6, but we should at least properly consider the pros and cons. We
already see that Qt WebEngine benefits from newer compilers and there are also
other things to be gained by being able to better leveraging capabilities
provided by C++11.
What comes to supporting older compilers and OS versions, that is of course a
significant item to consider as well. The typical options there are to support
only a subset of Qt functionality in these platforms as well as case by case
leveraging back porting to bring features from new Qt versions on top of an
older one. One extreme approach is also to make a special version of Qt for
these platforms, if the need is big enough. And a rather commonly used approach
is to have an extended support agreement to cover the needed product lifespan,
therefore reducing the need of moving to a new version.
Yours,
Tuukka
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