CMAKE_Swift_LANGUAGE_VERSION

CMAKE_Swift_LANGUAGE_VERSION

.. versionadded:: 3.7

Set to the Swift language version number. If not set, the oldest legacy version known to be available in the host Xcode version is assumed:

• Swift 4.0 for Xcode 10.2 and above.
• Swift 3.0 for Xcode 8.3 and above.
• Swift 2.3 for Xcode 8.2 and below.