build: initial support for building with CMake

Add support for building with CMake which is required to get the
toolchain bootstrapped. This partially addresses swiftlang#7.

CMakeLists.txt

@@ -0,0 +1,48 @@
+#[[
+This source file is part of the Swift open source project
+
+Copyright (c) 2014 - 2025 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 3.26...3.29)
+project(SwiftBuild
+  LANGUAGES C CXX Swift)
+
+set(CMAKE_C_VISIBILITY hidden)
+set(CMAKE_CXX_VISIBILITY hidden)
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED YES)
+set(CMAKE_CXX_EXTENSIONS NO)
+set(CMAKE_VISIBILITY_INLINES_HIDDEN YES)
+
+option(SwiftBuild_USE_LLBUILD_FRAMEWORK "Use LLBuild Framework" NO)
+
+add_compile_options("$<$<COMPILE_LANGUAGE:Swift>:SHELL:-package-name SwiftBuild>"
+                    "$<$<AND:$<COMPILE_LANGUAGE:Swift>,$<VERSION_LESS:$<TARGET_PROPERTY:Swift_LANGUAGE_VERSION>,6>>:SHELL:-enable-upcoming-feature ConciseMagicFile>"
+                    "$<$<AND:$<COMPILE_LANGUAGE:Swift>,$<VERSION_LESS:$<TARGET_PROPERTY:Swift_LANGUAGE_VERSION>,6>>:SHELL:-enable-upcoming-feature DeprecateApplicationMain>"
+                    "$<$<AND:$<COMPILE_LANGUAGE:Swift>,$<VERSION_LESS:$<TARGET_PROPERTY:Swift_LANGUAGE_VERSION>,6>>:SHELL:-enable-upcoming-feature DisableOutwardActorInference>"
+                    "$<$<AND:$<COMPILE_LANGUAGE:Swift>,$<VERSION_LESS:$<TARGET_PROPERTY:Swift_LANGUAGE_VERSION>,6>>:SHELL:-enable-upcoming-feature ForwardTrailingClosures>"
+                    "$<$<AND:$<COMPILE_LANGUAGE:Swift>,$<VERSION_LESS:$<TARGET_PROPERTY:Swift_LANGUAGE_VERSION>,6>>:SHELL:-enable-upcoming-feature GlobalConcurrency>"
+                    "$<$<AND:$<COMPILE_LANGUAGE:Swift>,$<VERSION_LESS:$<TARGET_PROPERTY:Swift_LANGUAGE_VERSION>,6>>:SHELL:-enable-upcoming-feature ImplicitOpenExistentials>"
+                    "$<$<AND:$<COMPILE_LANGUAGE:Swift>,$<VERSION_LESS:$<TARGET_PROPERTY:Swift_LANGUAGE_VERSION>,6>>:SHELL:-enable-upcoming-feature ImplicitOpenExistentialsImportObjcForwardDeclarations>"
+                    "$<$<AND:$<COMPILE_LANGUAGE:Swift>,$<VERSION_LESS:$<TARGET_PROPERTY:Swift_LANGUAGE_VERSION>,6>>:SHELL:-enable-upcoming-feature InferSendableFromCaptures>"
+                    "$<$<AND:$<COMPILE_LANGUAGE:Swift>,$<VERSION_LESS:$<TARGET_PROPERTY:Swift_LANGUAGE_VERSION>,6>>:SHELL:-enable-upcoming-feature IsolatedDefaultValues>"
+                    # rdar://137809703
+                    # "$<$<COMPILE_LANGUAGE:Swift>:SHELL:-enable-upcoming-feature RegionBasedIsolation>"
+                    "$<$<COMPILE_LANGUAGE:Swift>:SHELL:-enable-upcoming-feature ExistentialAny>"
+                    "$<$<COMPILE_LANGUAGE:Swift>:SHELL:-enable-upcoming-feature InternalImportsByDefault>")
+
+find_package(ArgumentParser)
+find_package(LLBuild)
+find_package(SwiftDriver)
+find_package(SwiftSystem)
+find_package(TSC)
+# NOTE: these two are required for LLBuild dependencies
+find_package(Threads)
+find_package(SQLite3)
+
+add_subdirectory(Sources)

Sources/CMakeLists.txt

@@ -0,0 +1,29 @@
+#[[
+This source file is part of the Swift open source project
+
+Copyright (c) 2014 - 2025 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_subdirectory(SWBCSupport)
+add_subdirectory(SWBCLibc)
+add_subdirectory(SWBLibc)
+add_subdirectory(SWBUtil)
+add_subdirectory(SWBMacro)
+add_subdirectory(SWBProtocol)
+add_subdirectory(SWBServiceCore)
+add_subdirectory(SWBCAS)
+add_subdirectory(SWBLLBuild)
+add_subdirectory(SWBCore)
+add_subdirectory(SWBTaskConstruction)
+add_subdirectory(SWBTaskExecution)
+add_subdirectory(SWBBuildSystem)
+add_subdirectory(SWBBuildService)
+add_subdirectory(SWBProjectModel)
+add_subdirectory(SwiftBuild)
+
+add_subdirectory(swbuild)
+add_subdirectory(SWBBuildServiceBundle)

Sources/SWBBuildService/CMakeLists.txt

@@ -0,0 +1,32 @@
+#[[
+This source file is part of the Swift open source project
+
+Copyright (c) 2014 - 2025 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(SWBBuildService
+  BuildDependencyInfo.swift
+  BuildOperationMessages.swift
+  BuildService.swift
+  BuildServiceEntryPoint.swift
+  ClientExchangeDelegate.swift
+  DependencyGraphMessages.swift
+  DocumentationInfo.swift
+  LocalizationInfo.swift
+  Messages.swift
+  PlanningOperation.swift
+  PreviewInfo.swift
+  ProjectDescriptor.swift
+  Session.swift
+  Tools.swift)
+set_target_properties(SWBBuildService PROPERTIES
+  Swift_LANGUAGE_VERSION 5)
+target_link_libraries(SWBBuildService PUBLIC
+  SWBBuildSystem
+  SWBServiceCore
+  SWBTaskExecution
+  SwiftSystem::SystemPackage)

Sources/SWBBuildServiceBundle/CMakeLists.txt

@@ -0,0 +1,22 @@
+#[[
+This source file is part of the Swift open source project
+
+Copyright (c) 2014 - 2025 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_executable(SWBBuildServiceBundle
+  main.swift)
+set_target_properties(SWBBuildServiceBundle PROPERTIES
+  Swift_LANGUAGE_VERSION 6)
+target_link_libraries(SWBBuildServiceBundle PRIVATE
+  SWBBuildService
+  SWBBuildSystem
+  SWBServiceCore
+  SWBUtil
+  SWBCore)
+
+install(TARGETS SWBBuildServiceBundle)

Sources/SWBBuildSystem/CMakeLists.txt

@@ -0,0 +1,24 @@
+#[[
+This source file is part of the Swift open source project
+
+Copyright (c) 2014 - 2025 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(SWBBuildSystem
+  BuildManager.swift
+  BuildOperation.swift
+  BuildOperationExtension.swift
+  BuildSystemCache.swift
+  CleanOperation.swift
+  DependencyCycleFormatter.swift
+  SandboxViolations.swift)
+set_target_properties(SWBBuildSystem PROPERTIES
+  Swift_LANGUAGE_VERSION 5)
+target_link_libraries(SWBBuildSystem PUBLIC
+  SWBCore
+  SWBTaskConstruction
+  SWBTaskExecution)

Sources/SWBCAS/CMakeLists.txt

@@ -0,0 +1,21 @@
+#[[
+This source file is part of the Swift open source project
+
+Copyright (c) 2014 - 2025 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(SWBCAS
+  CASFSNode.swift
+  CASProtocol.swift
+  Errors.swift
+  plugin_api_t.swift
+  ToolchainCASPlugin.swift)
+set_target_properties(SWBCAS PROPERTIES
+  Swift_LANGUAGE_VERSION 6)
+target_link_libraries(SWBCAS PUBLIC
+  SWBUtil
+  SWBCSupport)

Sources/SWBCLibc/CMakeLists.txt

@@ -0,0 +1,14 @@
+#[[
+This source file is part of the Swift open source project
+
+Copyright (c) 2014 - 2025 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(SWBCLibc
+  libc.c)
+target_include_directories(SWBCLibc INTERFACE
+  include)

Sources/SWBCSupport/CMakeLists.txt

@@ -0,0 +1,23 @@
+#[[
+This source file is part of the Swift open source project
+
+Copyright (c) 2014 - 2025 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(SWBCSupport STATIC
+  CLibclang.cpp
+  CLibRemarksHelper.c)
+target_compile_definitions(SWBCSupport PRIVATE
+  $<$<PLATFORM_ID:Windows>:_CRT_SECURE_NO_WARNINGS>
+  $<$<PLATFORM_ID:Windows>:_CRT_NONSTDC_NO_WARNINGS>)
+target_compile_options(SWBCSupport PRIVATE
+  -fblocks)
+target_include_directories(SWBCSupport PUBLIC
+  ${CMAKE_CURRENT_SOURCE_DIR})
+# TODO(compnerd) wire this up with `find_package`
+target_link_libraries(SWBCSupport PRIVATE
+  BlocksRuntime)

Sources/SWBCSupport/module.modulemap

@@ -0,0 +1,4 @@
+module SWBCSupport {
+  header "SWBCSupport.h"
+  export *
+}