“Use Legacy Swift Language Version” (SWIFT_VERSION) is required to be configured correctly for targets which use Swift."

Question

Ever since I\'ve updated to Xcode 8.2 (GM seed, from the App Store), I have been stuck at the following error:

Use Legacy Swift Language Version” (SWIFT_V

Answer 1

The phantom No answer will work. The real reason XCode is broken is because Apples XCode "use legacy setting" is really a Swift Version number. In XCode 8.1 'No' translated to 3.0.1, in XCode 8.2 'No' translates to 3.0. So you need to switch the version to Swift 3.0 . Which makes sense. Was a bug in XCode 8.1 I guess.

My git diff:

--- a/ios/myapp.xcodeproj/project.pbxproj
+++ b/ios/myapp.xcodeproj/project.pbxproj
@@ -1757,7 +1757,7 @@
                                SDKROOT = iphoneos;
                                SKIP_INSTALL = YES;
                                SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-                               SWIFT_VERSION = 3.0.1;
+                               SWIFT_VERSION = 3.0;
                                TARGETED_DEVICE_FAMILY = "1,2";
                        };
                        name = Debug;

I see a comment above that has the same answer just think it needs to stand out more.