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cmake_minimum_required(VERSION 3.3)
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if(POLICY CMP0126)
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cmake_policy(SET CMP0126 NEW)
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endif()
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# NOTE: Force the Release mode configuration as there are some issues with the
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# debug information handling on macOS on certain Xcode builds.
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if(NOT CMAKE_CONFIGURATION_TYPES)
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set(CMAKE_BUILD_TYPE Release CACHE STRING "Choose the type of build" FORCE)
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endif()
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# NOTE: enable shared libraries by default. Older Xcode releases do not play
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# well with static libraries, and Windows does not currently support static
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# libraries in Swift.
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set(BUILD_SHARED_LIBS YES)
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project(SwiftOnly Swift)
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if(NOT XCODE_VERSION VERSION_LESS 10.2)
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set(CMAKE_Swift_LANGUAGE_VERSION 5.0)
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elseif(NOT XCODE_VERSION VERSION_LESS 8.0)
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set(CMAKE_Swift_LANGUAGE_VERSION 3.0)
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endif()
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add_subdirectory(SubA)
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add_subdirectory(SubB)
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set(CMAKE_Swift_MODULE_DIRECTORY ${CMAKE_BINARY_DIR}/swift)
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add_executable(SwiftOnly main.swift)
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target_compile_definitions(SwiftOnly PRIVATE SWIFTONLY)
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add_library(L L.swift)
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add_library(M M.swift)
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|
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target_link_libraries(M PUBLIC
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|
|
L)
|
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add_library(N N.swift)
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target_link_libraries(N PUBLIC
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|
M)
|
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|
# Dummy to make sure generation works with such targets.
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|
|
add_library(SwiftIface INTERFACE)
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|
|
target_link_libraries(SwiftOnly PRIVATE SwiftIface)
|
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|
# @_alwaysEmitIntoClient ensures that the function body is inserted into the
|
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|
|
# swiftmodule instead of as a symbol in the binary itself. I'm doing this to
|
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|
|
# avoid having to link the executable. There are some flags required in order to
|
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|
|
# link an executable into a library that I didn't see CMake emitting for Swift
|
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|
|
# on macOS. AEIC is the easiest workaround that still tests this functionality.
|
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|
|
# Unfortunately, AEIC was only added recently (~Swift 5.2), so we need to check
|
|
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|
|
# that it is available before using it.
|
|
|
|
|
if(CMAKE_Swift_COMPILER_VERSION VERSION_GREATER_EQUAL 5.2)
|
|
|
|
|
add_subdirectory("SwiftPlugin")
|
|
|
|
|
endif()
|
