$ make
[  2%] Built target plasma_applet_bluemarble
[  4%] Built target plasma_applet_ebn
[  7%] Built target plasma_applet_dict
[ 10%] Built target plasma_applet_fileWatcher
[ 14%] Built target plasma_applet_frame
[ 15%] Built target plasma_applet_kolourpicker
make[2]: *** No rule to make target `/usr/local/share/dbus-1/interfaces/org.freedesktop.ScreenSaver.xml', needed by `applets/lancelot/app/src/screensaver_interface.cpp'.  Stop.
make[1]: *** [applets/lancelot/app/src/CMakeFiles/lancelot.dir/all] Error 2
make: *** [all] Error 2