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Forum Discussion
Swift 5.0.1 build error
I came back to my app to make a change after a few months. Before I could open Xcode, I had to upgrade to release 10.2.1, and I had to update MacOS to 10.14.5. During that time, I also upgraded my iPhone to iOS 12.2.
Since the upgrade, I can't build my project. I'm getting the following error:
Module compiled with Swift 4.2.1 cannot be imported by the Swift 5.0.1 compiler: /Users/rjkinsman/Dropbox/Nvelopes iOS/Nvelopes Project/Nvelopes/Carthage/Build/iOS/SwiftyDropbox.framework/Modules/SwiftyDropbox.swiftmodule/arm64.swiftmodule
So I went back to Xcode 10.1 and I was able to build my project with no problem. However, when I go to test it on my phone, I get the following:
Could not locate device support files. This iPhone... is running iOS 12.2... which may not be supported by this version of Xcode
So I'm caught in the middle. Where do I go from here?
Do you still have Xcode 10.1 installed? Carthage still may be using that to build if so.
In that case, trying using `sudo xcode-select -switch /Applications/Xcode-10.2.app/` (or whatever your new Xcode path is) first to switch to the new one, and then run the Carthage build again.
- Greg-DB
Dropbox Staff
I believe you do need to use at least version 10.2 of Xcode in order to debug on iOS 12.2, so using at least Xcode 10.2 seems necessary (as opposed to Xcode 10.1).
That means you'll need to get your copy of the SwiftyDropbox library working with the Swift 5.0.1 compiler. You should be able to do so by running `carthage update --platform iOS` again. Please make sure you're also getting the latest version of SwiftyDropbox itself, which is current 5.0.0. (Check your Cartfile in case you're specifying a particular version.) Please give that a try and let me know if it helps.
Thanks, Greg. Unfortunately, that didn't work. Here are the messages from carthage:
Rolands-MacBook-Pro:Nvelopes rjkinsman$ carthage update --platform iOS *** Fetching SwiftyDropbox *** Fetching Alamofire *** Checking out Alamofire at "4.8.2" *** Checking out SwiftyDropbox at "5.0.0" *** xcodebuild output can be found in /var/folders/ng/dzf2v52j7mxgfpc7jxpz80tr0000gn/T/carthage-xcodebuild.qEbvj1.log *** Building scheme "Alamofire iOS" in Alamofire.xcworkspace *** Building scheme "SwiftyDropbox iOS" in SwiftyDropbox.xcodeproj
But after running this, I'm still getting the build error.
- Greg-DB
Do you still have Xcode 10.1 installed? Carthage still may be using that to build if so.
In that case, trying using `sudo xcode-select -switch /Applications/Xcode-10.2.app/` (or whatever your new Xcode path is) first to switch to the new one, and then run the Carthage build again.
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