Fix `-fmodule-map-file` pointing to non-existent path (#3247)
Fix `-fmodule-map-file` pointing to non-existent path (#3247)


apple/swift-package-manager,apple/swift-package-manager,abertelrud/swift-package-manager,apple/swift-package-manager,apple/swift-package-manager,apple/swift-package-manager,abertelrud/swift-package-manager,abertelrud/swift-package-manager,abertelrud/swift-package-manager,abertelrud/swift-package-manager