[CMake] swift-collections → SwiftCollections (#60)

* [CMake] swift-collections → SwiftCollections

This is an integration FIXME for SwiftPM: swiftlang/swift-package-manager#3595 (comment)

* [CMake] Generate exports under cmake/modules/SwiftCollectionsConfig.cmake

Author: lorentey

CMakeLists.txt

@@ -8,7 +8,7 @@ See https://swift.org/LICENSE.txt for license information
 #]]
 
 cmake_minimum_required(VERSION 3.16)
-project(swift-collections
+project(SwiftCollections
   LANGUAGES C Swift)
 
 list(APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake/modules)
@@ -29,9 +29,4 @@ add_subdirectory(Sources)
 # if(BUILD_TESTING)
 #   add_subdirectory(Tests)
 # endif()
-
-get_property(SWIFT_COLLECTIONS_EXPORTS GLOBAL PROPERTY SWIFT_COLLECTIONS_EXPORTS)
-export(TARGETS ${SWIFT_COLLECTIONS_EXPORTS}
-  NAMESPACE SwiftCollections::
-  FILE swift-collections-config.cmake
-  EXPORT_LINK_INTERFACE_LIBRARIES)
+add_subdirectory(cmake/modules)

cmake/modules/CMakeLists.txt

@@ -0,0 +1,19 @@
+#[[
+This source file is part of the Swift Collections Open Source Project
+
+Copyright (c) 2021 Apple Inc. and the Swift project authors
+Licensed under Apache License v2.0 with Runtime Library Exception
+
+See https://swift.org/LICENSE.txt for license information
+#]]
+
+set(SWIFT_COLLECTIONS_EXPORTS_FILE ${CMAKE_CURRENT_BINARY_DIR}/SwiftCollectionsExports.cmake)
+
+configure_file(SwiftCollectionsConfig.cmake.in
+  ${CMAKE_CURRENT_BINARY_DIR}/SwiftCollectionsConfig.cmake)
+
+get_property(SWIFT_COLLECTIONS_EXPORTS GLOBAL PROPERTY SWIFT_COLLECTIONS_EXPORTS)
+export(TARGETS ${SWIFT_COLLECTIONS_EXPORTS}
+  NAMESPACE SwiftCollections::
+  FILE ${SWIFT_COLLECTIONS_EXPORTS_FILE}
+  EXPORT_LINK_INTERFACE_LIBRARIES)

cmake/modules/SwiftCollectionsConfig.cmake.in

@@ -0,0 +1,12 @@
+#[[
+This source file is part of the Swift Collections Open Source Project
+
+Copyright (c) 2021 Apple Inc. and the Swift project authors
+Licensed under Apache License v2.0 with Runtime Library Exception
+
+See https://swift.org/LICENSE.txt for license information
+#]]
+
+if(NOT TARGET SwiftCollections)
+  include(@SWIFT_COLLECTIONS_EXPORTS_FILE@)
+endif()