Add Single Module Build Mode to CMake for Foundation

CMakeLists.txt

@@ -33,6 +33,13 @@ if(CMAKE_SYSTEM_NAME STREQUAL Windows OR CMAKE_SYSTEM_NAME STREQUAL Darwin)
   option(BUILD_SHARED_LIBS "Build shared libraries by default" YES)
 endif()
 
+option(COLLECTIONS_SINGLE_MODULE "Build as a single module" NO)
+option(COLLECTIONS_FOUNDATION_TOOLCHAIN_MODULE "Build a module for Foundation in the toolchain" NO)
+
+if(COLLECTIONS_FOUNDATION_TOOLCHAIN_MODULE)
+  set(COLLECTIONS_SINGLE_MODULE YES)
+endif()
+
 include(CTest)
 include(SwiftSupport)
 

Sources/BitCollections/CMakeLists.txt

@@ -7,7 +7,7 @@ Licensed under Apache License v2.0 with Runtime Library Exception
 See https://swift.org/LICENSE.txt for license information
 #]]
 
-add_library(BitCollections
+list(APPEND COLLECTIONS_BIT_SOURCES
   "BitArray/BitArray+BitwiseOperations.swift"
   "BitArray/BitArray+ChunkedBitsIterators.swift"
   "BitArray/BitArray+Codable.swift"
@@ -65,10 +65,16 @@ add_library(BitCollections
   "Shared/UInt+Tricks.swift"
   "Shared/_Word.swift"
   )
-target_link_libraries(BitCollections PRIVATE
-  InternalCollectionsUtilities)
-set_target_properties(BitCollections PROPERTIES
-  INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_Swift_MODULE_DIRECTORY})
+set_property(GLOBAL APPEND PROPERTY COLLECTIONS_BIT_SOURCES ${COLLECTIONS_BIT_SOURCES})
 
-_install_target(BitCollections)
-set_property(GLOBAL APPEND PROPERTY SWIFT_COLLECTIONS_EXPORTS BitCollections)
+if(NOT COLLECTIONS_SINGLE_MODULE)
+  add_library(BitCollections
+    ${COLLECTIONS_BIT_SOURCES})
+  target_link_libraries(BitCollections PRIVATE
+    InternalCollectionsUtilities)
+  set_target_properties(BitCollections PROPERTIES
+    INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_Swift_MODULE_DIRECTORY})
+
+  _install_target(BitCollections)
+  set_property(GLOBAL APPEND PROPERTY SWIFT_COLLECTIONS_EXPORTS BitCollections)
+endif()

Sources/CMakeLists.txt

@@ -8,10 +8,12 @@ See https://swift.org/LICENSE.txt for license information
 #]]
 
 add_subdirectory(BitCollections)
-add_subdirectory(Collections)
 add_subdirectory(DequeModule)
 add_subdirectory(HashTreeCollections)
 add_subdirectory(HeapModule)
 add_subdirectory(OrderedCollections)
 add_subdirectory(RopeModule)
 add_subdirectory(InternalCollectionsUtilities)
+
+# Add Collections last so it can find global properties set by sub directories
+add_subdirectory(Collections)

Sources/Collections/CMakeLists.txt

@@ -7,17 +7,82 @@ Licensed under Apache License v2.0 with Runtime Library Exception
 See https://swift.org/LICENSE.txt for license information
 #]]
 
-add_library(Collections
-  "Collections.swift")
-target_link_libraries(Collections PRIVATE
-  BitCollections
-  DequeModule
-  HeapModule
-  OrderedCollections
-  HashTreeCollections
-  )
-set_target_properties(Collections PROPERTIES
-  INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_Swift_MODULE_DIRECTORY})
-
-_install_target(Collections)
-set_property(GLOBAL APPEND PROPERTY SWIFT_COLLECTIONS_EXPORTS Collections)
+if(COLLECTIONS_SINGLE_MODULE)
+  if (COLLECTIONS_FOUNDATION_TOOLCHAIN_MODULE)
+    set(COLLECTIONS_MODULE_NAME _FoundationCollections)
+    set(COLLECTIONS_MODULE_TYPE STATIC)
+  else()
+    set(COLLECTIONS_MODULE_NAME Collections)
+    set(COLLECTIONS_MODULE_TYPE)
+  endif()
+
+  get_property(COLLECTIONS_UTILITIES_SOURCES GLOBAL PROPERTY COLLECTIONS_UTILITIES_SOURCES)
+  list(TRANSFORM COLLECTIONS_UTILITIES_SOURCES PREPEND "../InternalCollectionsUtilities/")
+  get_property(COLLECTIONS_BIT_SOURCES GLOBAL PROPERTY COLLECTIONS_BIT_SOURCES)
+  list(TRANSFORM COLLECTIONS_BIT_SOURCES PREPEND "../BitCollections/")
+  get_property(COLLECTIONS_DEQUE_SOURCES GLOBAL PROPERTY COLLECTIONS_DEQUE_SOURCES)
+  list(TRANSFORM COLLECTIONS_DEQUE_SOURCES PREPEND "../DequeModule/")
+  get_property(COLLECTIONS_HEAP_SOURCES GLOBAL PROPERTY COLLECTIONS_HEAP_SOURCES)
+  list(TRANSFORM COLLECTIONS_HEAP_SOURCES PREPEND "../HeapModule/")
+  get_property(COLLECTIONS_ORDERED_SOURCES GLOBAL PROPERTY COLLECTIONS_ORDERED_SOURCES)
+  list(TRANSFORM COLLECTIONS_ORDERED_SOURCES PREPEND "../OrderedCollections/")
+  get_property(COLLECTIONS_HASHTREE_SOURCES GLOBAL PROPERTY COLLECTIONS_HASHTREE_SOURCES)
+  list(TRANSFORM COLLECTIONS_HASHTREE_SOURCES PREPEND "../HashTreeCollections/")
+
+  add_library(${COLLECTIONS_MODULE_NAME} ${COLLECTIONS_MODULE_TYPE}
+    "Collections.swift"
+    ${COLLECTIONS_UTILITIES_SOURCES}
+    ${COLLECTIONS_BIT_SOURCES}
+    ${COLLECTIONS_DEQUE_SOURCES}
+    ${COLLECTIONS_HEAP_SOURCES}
+    ${COLLECTIONS_ORDERED_SOURCES}
+    ${COLLECTIONS_HASHTREE_SOURCES})
+
+  if(COLLECTIONS_FOUNDATION_TOOLCHAIN_MODULE)
+    get_property(COLLECTIONS_ROPE_SOURCES GLOBAL PROPERTY COLLECTIONS_ROPE_SOURCES)
+    list(TRANSFORM COLLECTIONS_ROPE_SOURCES PREPEND "../RopeModule/")
+    target_sources(${COLLECTIONS_MODULE_NAME} PRIVATE
+      ${COLLECTIONS_ROPE_SOURCES})
+    target_compile_options(${COLLECTIONS_MODULE_NAME} PRIVATE
+      "SHELL:$<$<COMPILE_LANGUAGE:Swift>:-Xfrontend -allowable-client -Xfrontend FoundationEssentials>")
+  endif()
+
+  target_compile_definitions(${COLLECTIONS_MODULE_NAME} PRIVATE COLLECTIONS_SINGLE_MODULE)
+  set_target_properties(${COLLECTIONS_MODULE_NAME} PROPERTIES
+    INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_Swift_MODULE_DIRECTORY})
+
+  if(COLLECTIONS_FOUNDATION_TOOLCHAIN_MODULE)
+    # Install only the swift module and not the library
+    if(BUILD_SHARED_LIBS)
+      set(swift swift)
+    else()
+      set(swift swift_static)
+    endif()
+    get_swift_host_os(swift_os)
+    get_swift_host_arch(swift_arch)
+    install(FILES $<TARGET_PROPERTY:${COLLECTIONS_MODULE_NAME},Swift_MODULE_DIRECTORY>/${COLLECTIONS_MODULE_NAME}.swiftdoc
+      DESTINATION lib/${swift}/${swift_os}/${COLLECTIONS_MODULE_NAME}.swiftmodule
+      RENAME ${swift_arch}.swiftdoc)
+    install(FILES $<TARGET_PROPERTY:${COLLECTIONS_MODULE_NAME},Swift_MODULE_DIRECTORY>/${COLLECTIONS_MODULE_NAME}.swiftmodule
+      DESTINATION lib/${swift}/${swift_os}/${COLLECTIONS_MODULE_NAME}.swiftmodule
+      RENAME ${swift_arch}.swiftmodule)
+  else()
+    _install_target(${COLLECTIONS_MODULE_NAME})
+  endif()
+  set_property(GLOBAL APPEND PROPERTY SWIFT_COLLECTIONS_EXPORTS ${COLLECTIONS_MODULE_NAME})
+else()
+  add_library(Collections
+    "Collections.swift")
+  target_link_libraries(Collections PRIVATE
+    BitCollections
+    DequeModule
+    HeapModule
+    OrderedCollections
+    HashTreeCollections
+    )
+  set_target_properties(Collections PROPERTIES
+    INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_Swift_MODULE_DIRECTORY})
+
+  _install_target(Collections)
+  set_property(GLOBAL APPEND PROPERTY SWIFT_COLLECTIONS_EXPORTS Collections)
+endif()

Sources/DequeModule/CMakeLists.txt

@@ -7,7 +7,7 @@ Licensed under Apache License v2.0 with Runtime Library Exception
 See https://swift.org/LICENSE.txt for license information
 #]]
 
-add_library(DequeModule
+list(APPEND COLLECTIONS_DEQUE_SOURCES
   "Deque+Codable.swift"
   "Deque+Collection.swift"
   "Deque+CustomReflectable.swift"
@@ -26,10 +26,16 @@ add_library(DequeModule
   "_DequeSlot.swift"
   "_UnsafeWrappedBuffer.swift"
   )
-target_link_libraries(DequeModule PRIVATE
-  InternalCollectionsUtilities)
-set_target_properties(DequeModule PROPERTIES
-  INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_Swift_MODULE_DIRECTORY})
+set_property(GLOBAL APPEND PROPERTY COLLECTIONS_DEQUE_SOURCES ${COLLECTIONS_DEQUE_SOURCES})
 
-_install_target(DequeModule)
-set_property(GLOBAL APPEND PROPERTY SWIFT_COLLECTIONS_EXPORTS DequeModule)
+if(NOT COLLECTIONS_SINGLE_MODULE)
+  add_library(DequeModule
+    ${COLLECTIONS_DEQUE_SOURCES})
+  target_link_libraries(DequeModule PRIVATE
+    InternalCollectionsUtilities)
+  set_target_properties(DequeModule PROPERTIES
+    INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_Swift_MODULE_DIRECTORY})
+
+  _install_target(DequeModule)
+  set_property(GLOBAL APPEND PROPERTY SWIFT_COLLECTIONS_EXPORTS DequeModule)
+endif()

Sources/HashTreeCollections/CMakeLists.txt

@@ -7,7 +7,7 @@ Licensed under Apache License v2.0 with Runtime Library Exception
 See https://swift.org/LICENSE.txt for license information
 #]]
 
-add_library(HashTreeCollections
+list(APPEND COLLECTIONS_HASHTREE_SOURCES
   "HashNode/_AncestorHashSlots.swift"
   "HashNode/_Bitmap.swift"
   "HashNode/_Bucket.swift"
@@ -94,10 +94,16 @@ add_library(HashTreeCollections
   "TreeSet/TreeSet+SetAlgebra union.swift"
   "TreeSet/TreeSet.swift"
   )
-target_link_libraries(HashTreeCollections PRIVATE
-  InternalCollectionsUtilities)
-set_target_properties(HashTreeCollections PROPERTIES
-  INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_Swift_MODULE_DIRECTORY})
+set_property(GLOBAL APPEND PROPERTY COLLECTIONS_HASHTREE_SOURCES ${COLLECTIONS_HASHTREE_SOURCES})
 
-_install_target(HashTreeCollections)
-set_property(GLOBAL APPEND PROPERTY SWIFT_COLLECTIONS_EXPORTS HashTreeCollections)
+if(NOT COLLECTIONS_SINGLE_MODULE)
+  add_library(HashTreeCollections
+    ${COLLECTIONS_HASHTREE_SOURCES})
+  target_link_libraries(HashTreeCollections PRIVATE
+    InternalCollectionsUtilities)
+  set_target_properties(HashTreeCollections PROPERTIES
+    INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_Swift_MODULE_DIRECTORY})
+
+  _install_target(HashTreeCollections)
+  set_property(GLOBAL APPEND PROPERTY SWIFT_COLLECTIONS_EXPORTS HashTreeCollections)
+endif()

Sources/HeapModule/CMakeLists.txt

@@ -7,17 +7,23 @@ Licensed under Apache License v2.0 with Runtime Library Exception
 See https://swift.org/LICENSE.txt for license information
 #]]
 
-add_library(HeapModule
+list(APPEND COLLECTIONS_HEAP_SOURCES
   "_HeapNode.swift"
   "Heap.swift"
   "Heap+Descriptions.swift"
   "Heap+ExpressibleByArrayLiteral.swift"
   "Heap+Invariants.swift"
   "Heap+UnsafeHandle.swift")
-target_link_libraries(HeapModule PRIVATE
-  InternalCollectionsUtilities)
-set_target_properties(HeapModule PROPERTIES
-  INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_Swift_MODULE_DIRECTORY})
+set_property(GLOBAL APPEND PROPERTY COLLECTIONS_HEAP_SOURCES ${COLLECTIONS_HEAP_SOURCES})
 
-_install_target(HeapModule)
-set_property(GLOBAL APPEND PROPERTY SWIFT_COLLECTIONS_EXPORTS HeapModule)
+if(NOT COLLECTIONS_SINGLE_MODULE)
+  add_library(HeapModule
+    ${COLLECTIONS_HEAP_SOURCES})
+  target_link_libraries(HeapModule PRIVATE
+    InternalCollectionsUtilities)
+  set_target_properties(HeapModule PROPERTIES
+    INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_Swift_MODULE_DIRECTORY})
+
+  _install_target(HeapModule)
+  set_property(GLOBAL APPEND PROPERTY SWIFT_COLLECTIONS_EXPORTS HeapModule)
+endif()

Sources/InternalCollectionsUtilities/CMakeLists.txt

@@ -7,7 +7,7 @@ Licensed under Apache License v2.0 with Runtime Library Exception
 See https://swift.org/LICENSE.txt for license information
 #]]
 
-add_library(InternalCollectionsUtilities
+list(APPEND COLLECTIONS_UTILITIES_SOURCES
   "autogenerated/Debugging.swift"
   "autogenerated/Descriptions.swift"
   "autogenerated/RandomAccessCollection+Offsets.swift"
@@ -27,8 +27,14 @@ add_library(InternalCollectionsUtilities
   "_SortedCollection.swift"
   "_UniqueCollection.swift"
   )
-set_target_properties(InternalCollectionsUtilities PROPERTIES
-  INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_Swift_MODULE_DIRECTORY})
+set_property(GLOBAL APPEND PROPERTY COLLECTIONS_UTILITIES_SOURCES ${COLLECTIONS_UTILITIES_SOURCES})
 
-_install_target(InternalCollectionsUtilities)
-set_property(GLOBAL APPEND PROPERTY SWIFT_COLLECTIONS_EXPORTS InternalCollectionsUtilities)
+if(NOT COLLECTIONS_SINGLE_MODULE)
+  add_library(InternalCollectionsUtilities
+    ${COLLECTIONS_UTILITIES_SOURCES})
+  set_target_properties(InternalCollectionsUtilities PROPERTIES
+    INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_Swift_MODULE_DIRECTORY})
+
+  _install_target(InternalCollectionsUtilities)
+  set_property(GLOBAL APPEND PROPERTY SWIFT_COLLECTIONS_EXPORTS InternalCollectionsUtilities)
+endif()

Sources/OrderedCollections/CMakeLists.txt

@@ -7,7 +7,7 @@ Licensed under Apache License v2.0 with Runtime Library Exception
 See https://swift.org/LICENSE.txt for license information
 #]]
 
-add_library(OrderedCollections
+list(APPEND COLLECTIONS_ORDERED_SOURCES
   "HashTable/_HashTable.swift"
   "HashTable/_HashTable+Bucket.swift"
   "HashTable/_HashTable+BucketIterator.swift"
@@ -71,10 +71,16 @@ add_library(OrderedCollections
   "OrderedSet/OrderedSet.swift"
   "Utilities/_UnsafeBitset.swift"
   )
-target_link_libraries(OrderedCollections PRIVATE
-  InternalCollectionsUtilities)
-set_target_properties(OrderedCollections PROPERTIES
-  INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_Swift_MODULE_DIRECTORY})
+set_property(GLOBAL APPEND PROPERTY COLLECTIONS_ORDERED_SOURCES ${COLLECTIONS_ORDERED_SOURCES})
 
-_install_target(OrderedCollections)
-set_property(GLOBAL APPEND PROPERTY SWIFT_COLLECTIONS_EXPORTS OrderedCollections)
+if(NOT COLLECTIONS_SINGLE_MODULE)
+  add_library(OrderedCollections
+    ${COLLECTIONS_ORDERED_SOURCES})
+  target_link_libraries(OrderedCollections PRIVATE
+    InternalCollectionsUtilities)
+  set_target_properties(OrderedCollections PROPERTIES
+    INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_Swift_MODULE_DIRECTORY})
+
+  _install_target(OrderedCollections)
+  set_property(GLOBAL APPEND PROPERTY SWIFT_COLLECTIONS_EXPORTS OrderedCollections)
+endif()

Sources/RopeModule/CMakeLists.txt

@@ -7,7 +7,7 @@ Licensed under Apache License v2.0 with Runtime Library Exception
 See https://swift.org/LICENSE.txt for license information
 #]]
 
-add_library(_RopeModule
+list(APPEND COLLECTIONS_ROPE_SOURCES
   "BigString/Basics/BigString+Metrics.swift"
   "BigString/Basics/BigString+Index.swift"
   "BigString/Basics/BigString+Summary.swift"
@@ -85,10 +85,16 @@ add_library(_RopeModule
   "Utilities/String.Index+ABI.swift"
   "Utilities/Optional Utilities.swift"
   )
-target_link_libraries(_RopeModule PRIVATE
-  InternalCollectionsUtilities)
-set_target_properties(_RopeModule PROPERTIES
-  INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_Swift_MODULE_DIRECTORY})
+set_property(GLOBAL APPEND PROPERTY COLLECTIONS_ROPE_SOURCES ${COLLECTIONS_ROPE_SOURCES})
 
-_install_target(_RopeModule)
-set_property(GLOBAL APPEND PROPERTY SWIFT_COLLECTIONS_EXPORTS _RopeModule)
+if(NOT COLLECTIONS_SINGLE_MODULE)
+  add_library(_RopeModule
+    ${COLLECTIONS_ROPE_SOURCES})
+  target_link_libraries(_RopeModule PRIVATE
+    InternalCollectionsUtilities)
+  set_target_properties(_RopeModule PROPERTIES
+    INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_Swift_MODULE_DIRECTORY})
+
+  _install_target(_RopeModule)
+  set_property(GLOBAL APPEND PROPERTY SWIFT_COLLECTIONS_EXPORTS _RopeModule)
+endif()