Installing KF5

[aga]

Sorry for this but am stumbling when trying to build KMM.

I'm getting -
"
cmake .. -DCMAKE_INSTALL_PREFIX=/usr
CMake Warning at /usr/share/ECM/find-modules/FindKF5.cmake:74 
(find_package):
   Could not find a configuration file for package "KF5Holidays" that is
   compatible with requested version "5.2".

The following configuration files were considered but not accepted:
     /usr/lib64/cmake/KF5Holidays/KF5HolidaysConfig.cmake, version: 4.80.0"

I'm not even sure what 'requested version "5.2"' relates to.

I've installed openSUSE Leap 42.1.

Thanks if someone can give a pointer.

Allan