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CMakeLists.txt
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CMakeLists.txt
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# see https://developer.apple.com/library/archive/documentation/DeveloperTools/Reference/XcodeBuildSettingRef/1-Build_Setting_Reference/build_setting_ref.html
cmake_minimum_required(VERSION 3.28)
project(cpp_swift_bridges LANGUAGES CXX VERSION 1.2)
include(GNUInstallDirs)
set(CMAKE_CXX_STANDARD 20)
if(APPLE)
set(CMAKE_Swift_LANGUAGE_VERSION 5)
find_program(CMAKE_Swift_COMPILER NAMES swiftc REQUIRED)
enable_language(Swift)
# set(CMAKE_XCODE_ATTRIBUTE_TARGETED_DEVICE_FAMILY "1,2")
# if(ENABLE_COVERAGE)
# add_compile_options(-Wextra -ftest-coverage -fprofile-arcs)
# add_link_options(-ftest-coverage -fprofile-arcs)
# endif()
endif()
message(STATUS "Using system: ${CMAKE_SYSTEM_VERSION}")
message(STATUS "Using compiler: ${CMAKE_CXX_COMPILER_ID}")
if(CMAKE_TOOLCHAIN_FILE MATCHES vcpkg.cmake)
message(STATUS "Using vcpkg: ${VCPKG_TARGET_TRIPLET}")
endif()
find_library(BORINGSSL_LIBPATH NAMES boringssl REQUIRED)
message(STATUS "using BoringSSL: ${BORINGSSL_LIBPATH}")
find_program(Protobuf_PROTOC_EXECUTABLE NAMES protoc REQUIRED)
find_package(Protobuf CONFIG REQUIRED)
message(STATUS "Using protoc:")
message(STATUS " ${Protobuf_LIBRARY}")
message(STATUS " ${Protobuf_PROTOC_EXECUTABLE}")
find_path(MetalCpp_INCLUDE_DIR
NAMES "Metal/Metal.hpp"
PATHS ${PROJECT_SOURCE_DIR}/externals/metal-cpp
REQUIRED
)
message(STATUS "using Metal/Metal.hpp: ${MetalCpp_INCLUDE_DIR}")
list(APPEND ifcs
src/Baguette.h
)
# Must be SHARED to keep Swift types' namespace...
# It should be `BaguetteBridge` instead of `baguette_test`
add_library(BaguetteBridge SHARED ${ifcs} ${bridges})
# see https://cmake.org/cmake/help/latest/prop_tgt/FRAMEWORK.html
set_target_properties(BaguetteBridge
PROPERTIES
PUBLIC_HEADER "${ifcs};${bridges}"
FRAMEWORK true
FRAMEWORK_VERSION B
VERSION ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}
XCODE_ATTRIBUTE_ENABLE_TESTABILITY "YES" # for XCTest
# LINKER_LANGUAGE Swift
)
if(DEFINED bridges) # For customized bridging headers
set_target_properties(BaguetteBridge
PROPERTIES
XCODE_ATTRIBUTE_SWIFT_OBJC_BRIDGING_HEADER "${bridges}"
)
endif()
target_include_directories(BaguetteBridge
PUBLIC
${MetalCpp_INCLUDE_DIR}
$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/src>
)
target_link_libraries(BaguetteBridge
PUBLIC
"-framework Foundation"
${BORINGSSL_LIBPATH}
)
target_sources(BaguetteBridge
PRIVATE
src/bridge_apple.cpp
src/swift_crypto.cpp
src/swift_crypto.hpp
src/swift_decoder.cpp
src/swift_decoder.hpp
src/swift_hostinfo.hpp
src/swift_hostinfo.cpp
platform-apple/AsyncRoutines.swift
platform-apple/BaguetteBridge.swift
platform-apple/CryptoRoutines.swift
platform-apple/DecoderRoutines.swift
platform-apple/HostInfo.swift
)
install(TARGETS BaguetteBridge FRAMEWORK DESTINATION ${CMAKE_INSTALL_LIBDIR})
if(NOT BUILD_TESTING)
return()
endif()
enable_testing()
add_executable(baguette_test
test/baguette_test.cpp
)
target_compile_features(baguette_test
PRIVATE
cxx_std_20
)
target_include_directories(baguette_test
PRIVATE
src test
)
target_link_libraries(baguette_test
PRIVATE
"-framework Foundation"
BaguetteBridge
)
install(TARGETS baguette_test RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
add_test(NAME run_baguette_test COMMAND baguette_test WORKING_DIRECTORY ${PROJECT_BINARY_DIR})