This is a public service announcement: the frameworks-scratch branch in kde-workspace is no more and has been merged into master. This means master depends on Qt 5 and KDE Frameworks 5!
If you used to build from master you will need these dependencies now. In case you don’t have Qt 5 or KF 5, it will obviously end in a CMake error. Please be aware that kde-workspace on Qt 5 is still pre-alpha quality and probably not suited for everyday usage. If you used to build kde-workspace from master for everyday usage, you want to switch to KDE/4.11 branch, which is kept alive for a longer time.
We are sorry for any inconvenience this change might cause you. Happy Hacking!