swift-ninja-separate-swiftmodule-edge

• The Ninja Generators gained the Swift_SEPARATE_MODULE_EMISSION target property, initialized by the CMAKE_Swift_SEPARATE_MODULE_EMISSION variable, to control whether importable Swift targets emit .swiftmodule from a dedicated build edge. Policy CMP0215 enables this by default.

• The default Swift_MODULE_NAME now replaces hyphens with underscores, since hyphens are not valid in Swift module identifiers.