问题
I'm using Swift 2.3 in my project. Yesterday, I updated Xcode to version 8.3 but my project can't build successfully any more. I got this error message.
“Swift Language Version” (SWIFT_VERSION) is required to be configured correctly for targets which use Swift. Use the [Edit > Convert > To Current Swift Syntax…] menu to choose a Swift version or use the Build Settings editor to configure the build setting directly.
Please help me! Thanks!
回答1:
It is said in release note clearly that Xcode 8.3 doesn't support swift 2.x any more. You can either choose to use wizard to update your code to swift 3.1, or go back to Xcode 8.2.1.
https://developer.apple.com/library/content/releasenotes/DeveloperTools/RN-Xcode/Chapters/Introduction.html
回答2:
That's true. You have to convert your code to Swift 3. Or try to download a lower version of Xcode.
来源：https://stackoverflow.com/questions/43107179/xcode-8-3-cant-support-swift-2-3