Runtime: extract a Runtime subdirectory for SPM

Re-organise the "runtime" components (i.e. the Package Manifest runtime)
into a separate directory. Introduce a separate CMake project for the
build of this runtime to allow building the SPM tool with one version of
the Swift runtime and the SPM Manifest Runtime witih a separate Swift
runtime.

Author: compnerd

Sources/CMakeLists.txt

@@ -13,19 +13,16 @@ add_subdirectory(Basics)
 add_subdirectory(BinarySymbols)
 add_subdirectory(Build)
 add_subdirectory(Commands)
-add_subdirectory(CompilerPluginSupport)
 add_subdirectory(CoreCommands)
 add_subdirectory(DriverSupport)
 add_subdirectory(LLBuildManifest)
 add_subdirectory(PackageCollections)
 add_subdirectory(PackageCollectionsModel)
 add_subdirectory(PackageCollectionsSigning)
-add_subdirectory(PackageDescription)
 add_subdirectory(PackageFingerprint)
 add_subdirectory(PackageGraph)
 add_subdirectory(PackageLoading)
 add_subdirectory(PackageModel)
-add_subdirectory(PackagePlugin)
 add_subdirectory(PackageRegistry)
 add_subdirectory(PackageRegistryCommand)
 add_subdirectory(PackageSigning)
@@ -48,3 +45,5 @@ add_subdirectory(Workspace)
 add_subdirectory(XCBuildSupport)
 add_subdirectory(SwiftBuildSupport)
 add_subdirectory(tsan_utils)
+
+add_subdirectory(Runtimes)

Sources/CompilerPluginSupport/CMakeLists.txt

@@ -1 +1 @@
-../PackageDescription/PackageDescriptionSerialization.swift
+S:/SourceCache/swift-project/swift-package-manager/Sources/Runtimes/PackageDescription/PackageDescriptionSerialization.swift

Sources/PackageDescription/CMakeLists.txt

@@ -0,0 +1,43 @@
+# This source file is part of the Swift open source project
+#
+# Copyright (c) 2014 - 2021 Apple Inc. and the Swift project authors
+# Licensed under Apache License v2.0 with Runtime Library Exception
+#
+# See http://swift.org/LICENSE.txt for license information
+# See http://swift.org/CONTRIBUTORS.txt for Swift project authors
+
+cmake_minimum_required(VERSION 3.29)
+
+if(POLICY CMP0157 AND CMAKE_Swift_COMPILER_USE_OLD_DRIVER)
+  cmake_policy(SET CMP0157 OLD)
+endif()
+
+project(SwiftPMRuntime
+  LANGUAGES Swift)
+
+# TODO(compnerd) C is being enabled as a workaround for `GNUInstallDirs` not
+# being aware of Swift-only projects. Remove this once that is updated and we
+# have updated to a newer CMake minimum version.
+enable_language(C)
+include(GNUInstallDirs)
+
+set(CMAKE_INSTALL_NAME_DIR "@rpath")
+set(CMAKE_INSTALL_RPATH "$ORIGIN/../../$<LOWER_CASE:${CMAKE_SYSTEM_NAME}>")
+set(CMAKE_MSVC_RUNTIME_LIBRARY MultiThreadedDLL)
+set(CMAKE_POSITION_INDEPENDENT_CODE ${BUILD_SHARED_LIBS})
+set(CMAKE_Swift_LANGUAGE_VERSION 5)
+set(CMAKE_Swift_COMPILE_OPTIONS_MSVC_RUNTIME_LIBRARY MultiThreadedDLL)
+
+set(SwiftPMRuntime_ENABLE_LIBRARY_EVOLUTION YES)
+add_compile_options(-enable-library-evolution)
+
+add_compile_options(-package-description-version 999.0)
+
+list(APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake/modules)
+include(PlatformInfo)
+include(EmitSwiftInterface)
+include(InstallSwiftInterface)
+
+add_subdirectory(PackageDescription)
+add_subdirectory(CompilerPluginSupport)
+add_subdirectory(PackagePlugin)

Sources/PackageDescription/ContextModel.swift

@@ -0,0 +1,28 @@
+# This source file is part of the Swift open source project
+#
+# Copyright (c) 2023 Apple Inc. and the Swift project authors
+# Licensed under Apache License v2.0 with Runtime Library Exception
+#
+# See http://swift.org/LICENSE.txt for license information
+# See http://swift.org/CONTRIBUTORS.txt for Swift project authors
+
+add_library(CompilerPluginSupport
+  TargetExtensions.swift)
+target_link_libraries(CompilerPluginSupport PRIVATE
+  PackageDescription)
+
+if(APPLE)
+  target_link_options(CompilerPluginSupport PRIVATE
+    "SHELL:-Xlinker -install_name -Xlinker @rpath/CompilerPluginSupport.dylib")
+else()
+  target_link_libraries(CompilerPluginSupport PRIVATE
+    Foundation)
+endif()
+
+install(TARGETS CompilerPluginSupport
+  DESTINATION ${CMAKE_INSTALL_LIBDIR}/swift/pm/ManifestAPI)
+
+set(SwiftPMRuntime_INSTALL_SWIFTMODULEDIR
+  ${CMAKE_INSTALL_LIBDIR}/swift/pm/ManifestAPI)
+emit_swift_interface(CompilerPluginSupport)
+install_swift_interface(CompilerPluginSupport)