Warnings such as:
```
CMake Warning at /usr/lib/x86_64-linux-gnu/cmake/KF5SysGuard/KF5SysGuardConfig.cmake:37 (me
ssage):
The KF5:: namespace for KSysGuard targets is deprecated. Please use
KSysGuard as namespace.
Call Stack (most recent call first):
/usr/share/ECM/find-modules/FindKF5.cmake:74 (find_package)
CMakeLists.txt:55 (find_package)
```