iOS8 introduced a new authorization scheme for Location data.
Before retrieving location data, CLLocationManager must request authorization.

There are 2 authorization schemes:

1. Always Authorization (background location updates)
CLLocationManager - requestAlwaysAuthorization

Info.plist must include:
NSLocationAlwaysUsageDescription

2. When in use Authorization
CLLocationManager - requestWhenInUseAuthorization

Info.plist must include:
NSLocationWhenInUseUsageDescription

Without having these methods executed, QtPositioning returns a SourceUnknown error.

Calling either of these methods will show the "Allow app to access location" popup on an iOS8 device.