Wenn building iOS applications with CMake, it is necessary to set some CMake variables
When not setting these variables, running the application e.g. in the simulator "just fails" without a sensible error message.
- adding these variables with dummy values to the application templates
- creating warnings in the Issues pane if they are not set
- finding out where the warning message comes from that Xcode shows when trying to run the project in the simulator, and show these too