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cmake_minimum_required(VERSION 3.3)
# NOTE: Force the Release mode configuration as there are some issues with the
# debug information handling on macOS on certain Xcode builds.
if(NOT CMAKE_CONFIGURATION_TYPES)
set(CMAKE_BUILD_TYPE Release CACHE STRING "Choose the type of build" FORCE)
endif()
# NOTE: enable shared libraries by default. Older Xcode releases do not play
# well with static libraries, and Windows does not currently support static
# libraries in Swift.
set(BUILD_SHARED_LIBS YES)
project(SwiftOnly Swift)
if(NOT XCODE_VERSION VERSION_LESS 10.2)
set(CMAKE_Swift_LANGUAGE_VERSION 5.0)
elseif(NOT XCODE_VERSION VERSION_LESS 8.0)
set(CMAKE_Swift_LANGUAGE_VERSION 3.0)
endif()
set(CMAKE_Swift_MODULE_DIRECTORY ${CMAKE_BINARY_DIR}/swift)
add_executable(SwiftOnly main.swift)
add_library(L L.swift)
add_library(M M.swift)
target_link_libraries(M PUBLIC
L)
add_library(N N.swift)
target_link_libraries(N PUBLIC
M)
# Dummy to make sure generation works with such targets.
add_library(SwiftIface INTERFACE)
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