$ cat A.swift @available(*, introduced: 1) public func funcA() { print("funcA") } $ cat B.swift public func funcB() { print("funcB") funcA() } $ cat C.swift public func funcC() { print("funcC") } $ cat output.json { "A.swift": { "object": "Derived/A.o", "swiftmodule": "Derived/A~partial.swiftmodule", "swift-dependencies": "Derived/A.swiftdeps", }, "B.swift": { "object": "Derived/B.o", "swiftmodule": "Derived/B~partial.swiftmodule", "swift-dependencies": "Derived/B.swiftdeps", }, "C.swift": { "object": "Derived/C.o", "swiftmodule": "Derived/C~partial.swiftmodule", "swift-dependencies": "Derived/C.swiftdeps", }, "": { "swift-dependencies": "Derived/buildrecord.swiftdeps" } } $ mkdir -p Derived な状態から、 $ xcrun swiftc -v -incremental -output-file-map output.json A.swift B.swift C.swift -module-name MyModule -emit-library -emit-module -o Derived/MyModule.dylib でとりあえずクリーンビルドして、Derived ディレクトリの中身見たり、A.swiftの@available消して同コマンド実行して何が起こってるか確認したりすると面白いです。 (edited)
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