[Qgis-developer] Building QGIS 2.x with Qt 5.x?

[Matthias Kuhn]

Hi Paolo,

On 09/03/2014 08:16 AM, Paolo Cavallini wrote:
> Hi Matthias, thanks for this. What is your roadmap to move main QGIS 
> to Qt5? All the best. 

This decision is not either/or. We can have a codebase that compiles 
against both (at least for a transition time), my branch is totally 
targeted towards this solution. There is no particular reason I could 
think of to be in a rush to put preasure on distributions to change.

In the beginning Qt4 will be used as default setting and when enough 
water has gone down the Danube river we can change the default to Qt5.

This will let us have a transition time where distros can decide 
themselves what suits their needs better.
Right now there are two parts that I know will need some attention:

  * evis plugin uses an incompatible API (easy change)
  * python bindings need to be tested (maybe just work, maybe hard 
work... don't know)

I would like to merge this after 2.6 has been released so it will be 
possible to build 2.8 against Qt5. That will also allow us to have 
Android nightlies based on master again.

Matthias