This week end I started to implement a script which allows to convert old connect api to new qt5 connect api (see http://qt-project.org/wiki/New_Signal_Slot_Syntax)
So it’s still in progress and it’s not perfect.
It will search variable from ui file, look at current class from .h file and parses connect line.
It will convert to new api.
But after that you need to verify if it compiles.
It will failed when slot is protected, or when there is “overloads”
I was able to port a lot of connect in kdepim*.
I will continue to improve this script. There is still a lot of work to do