CMP0216

Added in version 4.4.

Swift targets have a default project name.

CMake 4.3 and below did not compile Swift targets with -package-name. The package name is useful because Swift package access control makes types, functions, and properties visible to other libraries within the same package, but not from sources outside of the package. CMake 4.4 and above prefer to pass -package-name by default using the PROJECT_NAME variable value. This policy provides compatibility for projects that have not been updated to expect a package name.

Note

Package access control was added in Swift 5.8 and Xcode 15. This policy has no effect when using an earlier version of Swift or Xcode.

The OLD behavior for this policy is to build Swift source files without passing a package-name. The NEW behavior for this policy is to build Swift source files with a default package name from PROJECT_NAME.

Regardless of whether this policy is set, the Swift_PACKAGE_NAME target property may be set to explicitly specify or suppress a package name.

This policy was introduced in CMake version 4.4. It may be set by cmake_policy() or cmake_minimum_required(). If it is not set, CMake does not warn, and uses OLD behavior.

Note

The OLD behavior of a policy is deprecated by definition and may be removed in a future version of CMake.