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build: add a CMake based build system (apple#42)
Add a CMake based build system to enable bootstrapping the toolchain with the ability to use Swift Collections in SPM.
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‎CMakeLists.txt‎

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#[[
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This source file is part of the Swift Collections Open Source Project
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Copyright (c) 2021 Apple Inc. and the Swift project authors
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Licensed under Apache License v2.0 with Runtime Library Exception
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See https://swift.org/LICENSE.txt for license information
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#]]
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cmake_minimum_required(VERSION 3.16)
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project(swift-collections
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LANGUAGES C Swift)
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list(APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake/modules)
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set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
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set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
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set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
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set(CMAKE_Swift_MODULE_DIRECTORY ${CMAKE_BINARY_DIR}/swift)
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if(CMAKE_SYSTEM_NAME STREQUAL Windows OR CMAKE_SYSTEM_NAME STREQUAL Darwin)
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option(BUILD_SHARED_LIBS "Build shared libraries by default" YES)
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endif()
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include(CTest)
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include(SwiftSupport)
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add_subdirectory(Sources)
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# if(BUILD_TESTING)
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# add_subdirectory(Tests)
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# endif()
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get_property(SWIFT_COLLECTIONS_EXPORTS GLOBAL PROPERTY SWIFT_COLLECTIONS_EXPORTS)
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export(TARGETS ${SWIFT_COLLECTIONS_EXPORTS}
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NAMESPACE SwiftCollections::
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FILE swift-collections-config.cmake
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EXPORT_LINK_INTERFACE_LIBRARIES)

‎Sources/CMakeLists.txt‎

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#[[
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This source file is part of the Swift Collections Open Source Project
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Copyright (c) 2021 Apple Inc. and the Swift project authors
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Licensed under Apache License v2.0 with Runtime Library Exception
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See https://swift.org/LICENSE.txt for license information
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#]]
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add_subdirectory(Collections)
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add_subdirectory(DequeModule)
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add_subdirectory(OrderedCollections)

‎Sources/Collections/CMakeLists.txt‎

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#[[
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This source file is part of the Swift Collections Open Source Project
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Copyright (c) 2021 Apple Inc. and the Swift project authors
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Licensed under Apache License v2.0 with Runtime Library Exception
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See https://swift.org/LICENSE.txt for license information
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#]]
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add_library(Collections
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Collections.swift)
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target_link_libraries(Collections PRIVATE
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DequeModule
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OrderedCollections)
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set_target_properties(Collections PROPERTIES
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INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_Swift_MODULE_DIRECTORY})
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_install_target(Collections)
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set_property(GLOBAL APPEND PROPERTY SWIFT_COLLECTIONS_EXPORTS Collections)

‎Sources/DequeModule/CMakeLists.txt‎

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#[[
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This source file is part of the Swift Collections Open Source Project
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Copyright (c) 2021 Apple Inc. and the Swift project authors
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Licensed under Apache License v2.0 with Runtime Library Exception
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See https://swift.org/LICENSE.txt for license information
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#]]
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add_library(DequeModule
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_DequeBuffer.swift
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_DequeBufferHeader.swift
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_DequeSlot.swift
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_UnsafeWrappedBuffer.swift
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Deque._Storage.swift
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Deque._UnsafeHandle.swift
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Deque.swift
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Deque+Codable.swift
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Deque+CustomDebugStringConvertible.swift
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Deque+CustomReflectable.swift
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Deque+CustomStringConvertible.swift
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Deque+Equatable.swift
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Deque+ExpressibleByArrayLiteral.swift
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Deque+Extras.swift
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Deque+Hashable.swift
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Deque+MutableCollection.swift
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Deque+RandomAccessCollection.swift
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Deque+RangeReplaceableCollection.swift
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Deque+Sequence.swift
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Deque+Testing.swift
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UnsafeMutableBufferPointer+Utilities.swift)
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set_target_properties(DequeModule PROPERTIES
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INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_Swift_MODULE_DIRECTORY})
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_install_target(DequeModule)
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set_property(GLOBAL APPEND PROPERTY SWIFT_COLLECTIONS_EXPORTS DequeModule)

‎Sources/OrderedCollections/CMakeLists.txt‎

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#[[
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This source file is part of the Swift Collections Open Source Project
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Copyright (c) 2021 Apple Inc. and the Swift project authors
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Licensed under Apache License v2.0 with Runtime Library Exception
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See https://swift.org/LICENSE.txt for license information
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#]]
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add_library(OrderedCollections
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"HashTable/_HashTable+Bucket.swift"
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"HashTable/_HashTable+BucketIterator.swift"
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"HashTable/_HashTable+Constants.swift"
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"HashTable/_HashTable+CustomStringConvertible.swift"
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"HashTable/_Hashtable+Header.swift"
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"HashTable/_HashTable+Testing.swift"
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"HashTable/_HashTable+UnsafeHandle.swift"
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"HashTable/_HashTable.swift"
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"OrderedDictionary/OrderedDictionary+Codable.swift"
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"OrderedDictionary/OrderedDictionary+CustomDebugStringConvertible.swift"
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"OrderedDictionary/OrderedDictionary+CustomReflectable.swift"
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"OrderedDictionary/OrderedDictionary+CustomStringConvertible.swift"
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"OrderedDictionary/OrderedDictionary+Elements+SubSequence.swift"
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"OrderedDictionary/OrderedDictionary+Elements.swift"
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"OrderedDictionary/OrderedDictionary+Equatable.swift"
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"OrderedDictionary/OrderedDictionary+ExpressibleByDictionaryLiteral.swift"
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"OrderedDictionary/OrderedDictionary+Hashable.swift"
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"OrderedDictionary/OrderedDictionary+Initializers.swift"
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"OrderedDictionary/OrderedDictionary+Invariants.swift"
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"OrderedDictionary/OrderedDictionary+Partial MutableCollection.swift"
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"OrderedDictionary/OrderedDictionary+Partial RangeReplaceableCollection.swift"
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"OrderedDictionary/OrderedDictionary+Sequence.swift"
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"OrderedDictionary/OrderedDictionary+Values.swift"
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"OrderedDictionary/OrderedDictionary.swift"
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"OrderedSet/OrderedSet+Codable.swift"
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"OrderedSet/OrderedSet+CustomDebugStringConvertible.swift"
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"OrderedSet/OrderedSet+CustomReflectable.swift"
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"OrderedSet/OrderedSet+CustomStringConvertible.swift"
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"OrderedSet/OrderedSet+Diffing.swift"
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"OrderedSet/OrderedSet+Equatable.swift"
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"OrderedSet/OrderedSet+ExpressibleByArrayLiteral.swift"
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"OrderedSet/OrderedSet+Hashable.swift"
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"OrderedSet/OrderedSet+Initializers.swift"
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"OrderedSet/OrderedSet+Insertions.swift"
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"OrderedSet/OrderedSet+Invariants.swift"
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"OrderedSet/OrderedSet+Partial MutableCollection.swift"
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"OrderedSet/OrderedSet+Partial RangeReplaceableCollection.swift"
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"OrderedSet/OrderedSet+Partial SetAlgebra+Basics.swift"
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"OrderedSet/OrderedSet+Partial SetAlgebra+Operations.swift"
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"OrderedSet/OrderedSet+Partial SetAlgebra+Predicates.swift"
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"OrderedSet/OrderedSet+RandomAccessCollection.swift"
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"OrderedSet/OrderedSet+ReserveCapacity.swift"
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"OrderedSet/OrderedSet+SubSequence.swift"
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"OrderedSet/OrderedSet+Testing.swift"
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"OrderedSet/OrderedSet+UnorderedView.swift"
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"OrderedSet/OrderedSet+UnstableInternals.swift"
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"OrderedSet/OrderedSet.swift"
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"Utilities/_UnsafeBitset.swift"
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"Utilities/RandomAccessCollection+Offsets.swift")
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set_target_properties(OrderedCollections PROPERTIES
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INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_Swift_MODULE_DIRECTORY})
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_install_target(OrderedCollections)
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set_property(GLOBAL APPEND PROPERTY SWIFT_COLLECTIONS_EXPORTS OrderedCollections)

‎cmake/modules/SwiftSupport.cmake‎

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#[[
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This source file is part of the Swift Collections Open Source Project
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Copyright (c) 2021 Apple Inc. and the Swift project authors
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Licensed under Apache License v2.0 with Runtime Library Exception
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See https://swift.org/LICENSE.txt for license information
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#]]
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# Returns the architecture name in a variable
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#
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# Usage:
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# get_swift_host_arch(result_var_name)
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#
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# Sets ${result_var_name} with the converted architecture name derived from
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# CMAKE_SYSTEM_PROCESSOR.
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function(get_swift_host_arch result_var_name)
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if("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "x86_64")
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set("${result_var_name}" "x86_64" PARENT_SCOPE)
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elseif("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "aarch64")
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set("${result_var_name}" "aarch64" PARENT_SCOPE)
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elseif("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "ppc64")
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set("${result_var_name}" "powerpc64" PARENT_SCOPE)
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elseif("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "ppc64le")
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set("${result_var_name}" "powerpc64le" PARENT_SCOPE)
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elseif("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "s390x")
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set("${result_var_name}" "s390x" PARENT_SCOPE)
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elseif("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "armv6l")
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set("${result_var_name}" "armv6" PARENT_SCOPE)
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elseif("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "armv7l")
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set("${result_var_name}" "armv7" PARENT_SCOPE)
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elseif("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "armv7-a")
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set("${result_var_name}" "armv7" PARENT_SCOPE)
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elseif("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "AMD64")
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set("${result_var_name}" "x86_64" PARENT_SCOPE)
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elseif("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "IA64")
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set("${result_var_name}" "itanium" PARENT_SCOPE)
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elseif("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "x86")
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set("${result_var_name}" "i686" PARENT_SCOPE)
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elseif("${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "i686")
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set("${result_var_name}" "i686" PARENT_SCOPE)
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else()
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message(FATAL_ERROR "Unrecognized architecture on host system: ${CMAKE_SYSTEM_PROCESSOR}")
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endif()
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endfunction()
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# Returns the os name in a variable
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#
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# Usage:
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# get_swift_host_os(result_var_name)
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#
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#
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# Sets ${result_var_name} with the converted OS name derived from
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# CMAKE_SYSTEM_NAME.
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function(get_swift_host_os result_var_name)
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if(CMAKE_SYSTEM_NAME STREQUAL Darwin)
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set(${result_var_name} macosx PARENT_SCOPE)
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else()
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string(TOLOWER ${CMAKE_SYSTEM_NAME} cmake_system_name_lc)
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set(${result_var_name} ${cmake_system_name_lc} PARENT_SCOPE)
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endif()
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endfunction()
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function(_install_target module)
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get_swift_host_os(swift_os)
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get_target_property(type ${module} TYPE)
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if(type STREQUAL STATIC_LIBRARY)
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set(swift swift_static)
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else()
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set(swift swift)
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endif()
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install(TARGETS ${module}
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ARCHIVE DESTINATION lib/${swift}/${swift_os}
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LIBRARY DESTINATION lib/${swift}/${swift_os}
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RUNTIME DESTINATION bin)
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if(type STREQUAL EXECUTABLE)
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return()
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endif()
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get_swift_host_arch(swift_arch)
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get_target_property(module_name ${module} Swift_MODULE_NAME)
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if(NOT module_name)
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set(module_name ${module})
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endif()
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install(FILES $<TARGET_PROPERTY:${module},Swift_MODULE_DIRECTORY>/${module_name}.swiftdoc
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DESTINATION lib/${swift}/${swift_os}/${module_name}.swiftmodule
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RENAME ${swift_arch}.swiftdoc)
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install(FILES $<TARGET_PROPERTY:${module},Swift_MODULE_DIRECTORY>/${module_name}.swiftmodule
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DESTINATION lib/${swift}/${swift_os}/${module_name}.swiftmodule
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RENAME ${swift_arch}.swiftmodule)
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endfunction()

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