Xcode 10.2 no longer supports Swift 3 causing compiler test to fail (#18871) · Issues · CMake / CMake · GitLab

Xcode 10.2 no longer supports Swift 3 causing compiler test to fail

Xcode 10.2 comes with Swift 5.\ The test build project generated defaults to Swift 3.0.\ This cannot be override by `-DCMAKE_XCODE_ATTRIBUTE_SWIFT_VERSION=5.0` or `export SWIFT_VERSION=5.0`. Links:\ [Swift 5 Release Notes](https://developer.apple.com/documentation/xcode_release_notes/xcode_10_2_beta_release_notes/swift_5_release_notes_for_xcode_10_2_beta?language=objc)

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