New answers tagged qt5
There is a little older version on the official repositories: $ sudo apt-get install qt5-default $ sudo apt-get install qtcreator You can also install QtCreator 2.8.1 from here (I'm using this package).
This is a know (annoying) bug. Delete /home/kknd/.config/QtProject/QtCreator.ini and disable the welcome plugin in QtCreator -> About -> Plugins, and it should work. You can also try QtCreator 2.8.1, download the package here.
Your package name has a missing 5, its name is libqt5webkit5 not libqtwebkit5: sudo apt-get install libqt5webkit5 Reading package lists... Done Building dependency tree Reading state information... Done The following packages were automatically installed and are no longer required: xaw3dg xfig-libs Use 'apt-get autoremove' to remove them. The ...
Two things I was missing: After an unsuccessful build, I must remove CMakeCache.txt (or simply clear the build directory); otherwise cmake will report the same error even if the needed package has been installed. The packages which provide the *.cmake configuration files have names of the form qt*5-dev, e.g. for the error in my question, qtcore5-dev.
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