swift failed with exit code 1 while compiling in Xcode – possibly related to Bridging-Headers

I did the same all answer says but mine issue was not resolved. I did figured out that issue was related to broken function call.

A function syntax was not wrong but its calling mechanism was wrong.

To check the exact error for this issue check following:

Select issue navigator > Click on error will show logs for error > In that select All Messages tab.

This will show all detail logs for this error.

Scroll down and You got logs like, in my case

So, by reading this I figure out that something wrong with function calling. I browse my code and resolved it, Below was correct and wrong code.

Wrong Way:

var region = MKCoordinateRegionMake(self.mapView.userLocation.coordinate, span)
// It will not shown error here but when you build project compiler shows error.

Right Way:

let region = MKCoordinateRegion(center: self.mapView.userLocation.coordinate, span: span)