Using Xcode 4.5.1. Our project has been building fine for the last three months, but suddenly, when I try to build, it says "Build failed", but does not show any errors on the triangle exclamation mark tab, nor does it give a reason when it pops up build failed.
We have not changed the bundle identifier, or any other project properties. I tried a clean, then build, but no luck.
What may be causing the problem?
Similar to this question, but none of the solutions apply.
You can see reasons for failure on Report Navigator present in Navigator window.
Hide/Show Navigator button present in top-left side of Xcode.
Report Navigator by pressing last button present on list of buttons in Navigator window.
Here you can view reasons either By Group or By Time
Click the last icon in the top bar of the left most panel in your Xcode window to reveal the secret Archive build errors.
It will likely be something related to code signing if you are able to build and run the app, but not Archive. Further googling of your error message should resolve that now that it has been revealed.
This happened to me while I was writing in Swift 4.1 in XCode 9.3. I use RxSwift also. It never happened while I was writing in Objective C. There were no any logs in Report Navigator too. Project just compiled without errors, then failed. Couldn't figure out why.
In my case what I did and it helped:
After this project tried to compile and showed errors. The error was here:
do {
let jsonData = try JSONSerialization.data(withJSONObject: timingsDict, options: .prettyPrinted)
let decoder = JSONDecoder()
let pTiming = try decoder.decode(PTiming.self, from: jsonData)
observer.onNext(timing)
observer.onCompleted()
} catch {
print(error.localizedDescription)
observer.onError(error)
}
I passed wrong variable name in observer.onNext(timing). It should have been pTiming.
Other answers helped me find the Report Navigator. The only error displayed was:
Build operation failed without specifying any errors. Individual build tasks may have failed for unknown reasons. One possible cause is if there are too many (possibly zombie) processes; in this case, rebooting may fix the problem.
I fixed this by closing the Simulator.
