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# Copyright (C) 2023 The Qt Company Ltd.
# SPDX-License-Identifier: BSD-3-Clause
cmake_minimum_required(VERSION 3.26)
project(helloswift LANGUAGES CXX Swift)
# --------------- Qt ----------------
find_package(Qt6 REQUIRED COMPONENTS Core Quick)
qt_standard_project_setup(REQUIRES 6.5)
if(NOT DEFINED INSTALL_EXAMPLESDIR)
set(INSTALL_EXAMPLESDIR "examples")
endif()
set(INSTALL_EXAMPLEDIR "${INSTALL_EXAMPLESDIR}/quick/helloswift")
qt_add_executable(helloswift WIN32 MACOSX_BUNDLE
main.cpp
)
target_include_directories(helloswift PRIVATE
${CMAKE_CURRENT_BINARY_DIR}
)
target_link_libraries(helloswift PRIVATE
Qt6::Quick
)
qt_add_qml_module(helloswift
URI helloswift
QML_FILES
"main.qml"
)
install(TARGETS helloswift
RUNTIME DESTINATION "${INSTALL_EXAMPLEDIR}"
BUNDLE DESTINATION "${INSTALL_EXAMPLEDIR}"
LIBRARY DESTINATION "${INSTALL_EXAMPLEDIR}"
)
# ------------- Swift ---------------
# Verify that we have a new enough compiler
if("${CMAKE_Swift_COMPILER_VERSION}" VERSION_LESS 5.9)
message(FATAL_ERROR "Swift 5.9 required for C++ interoperability")
endif()
set(CMAKE_OSX_DEPLOYMENT_TARGET 13.0)
set(CMAKE_CXX_STANDARD 17)
get_target_property(QT_CORE_INCLUDES Qt6::Core INTERFACE_INCLUDE_DIRECTORIES)
# Swift library
set(SWIFT_SOURCES "${CMAKE_CURRENT_SOURCE_DIR}/hello.swift")
add_library(hello-swift STATIC ${SWIFT_SOURCES})
set_target_properties(hello-swift PROPERTIES Swift_MODULE_NAME "HelloSwift")
target_include_directories(hello-swift PUBLIC
"${CMAKE_CURRENT_SOURCE_DIR}"
"${QT_CORE_INCLUDES}"
)
target_compile_options(hello-swift PUBLIC
$<$<COMPILE_LANGUAGE:Swift>:-cxx-interoperability-mode=default>
$<$<COMPILE_LANGUAGE:Swift>:-Xcc -std=c++17>)
# Swift to C++ bridging header
set(SWIFT_BRIDGING_HEADER "${CMAKE_CURRENT_BINARY_DIR}/hello-swift.h")
list(TRANSFORM QT_CORE_INCLUDES PREPEND "-I")
add_custom_command(
COMMAND
${CMAKE_Swift_COMPILER} -frontend -typecheck
${SWIFT_SOURCES}
-I ${CMAKE_CURRENT_SOURCE_DIR}
${QT_CORE_INCLUDES}
-sdk ${CMAKE_OSX_SYSROOT}
-module-name HelloSwift
-cxx-interoperability-mode=default
-Xcc -std=c++17
-emit-clang-header-path "${SWIFT_BRIDGING_HEADER}"
OUTPUT
"${SWIFT_BRIDGING_HEADER}"
DEPENDS
${SWIFT_SOURCES}
)
add_custom_target(swift-bridging-header
DEPENDS
"${SWIFT_BRIDGING_HEADER}"
)
add_dependencies(hello-swift swift-bridging-header)
# Tie everything together
target_link_libraries(helloswift PRIVATE
hello-swift
)
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