cdad78a4a4
Change-Id: Ib6bdd3d5ed7dab108b636284ee564d14dbc2d5c8 Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
454 lines
19 KiB
CMake
454 lines
19 KiB
CMake
#
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# Collection of auto detection routines to improve the user experience when
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# building Qt from source.
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#
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# Make sure to not run detection when building standalone tests, because the detection was already
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# done when initially configuring qtbase.
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function(qt_auto_detect_wasm)
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if("${QT_QMAKE_TARGET_MKSPEC}" STREQUAL "wasm-emscripten" AND DEFINED ENV{EMSDK})
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if(NOT DEFINED QT_AUTODETECT_WASM)
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# detect EMSCRIPTEN_ROOT path
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file(READ "$ENV{EMSDK}/.emscripten" ver)
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string(REGEX MATCH "EMSCRIPTEN_ROOT.*$" EMROOT "${ver}")
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string(REGEX MATCH "'([^' ]*)'" EMROOT2 "${EMROOT}")
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string(REPLACE "'" "" EMROOT_PATH "${EMROOT2}")
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# get emscripten version
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if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Windows")
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set (EXECUTE_COMMANDPATH "$ENV{EMSDK}/${EMROOT_PATH}/emcc.bat")
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else()
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set (EXECUTE_COMMANDPATH "$ENV{EMSDK}/${EMROOT_PATH}/emcc")
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endif()
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file(TO_NATIVE_PATH "${EXECUTE_COMMANDPATH}" EXECUTE_COMMAND)
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execute_process(COMMAND ${EXECUTE_COMMAND} --version
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OUTPUT_VARIABLE emOutput
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OUTPUT_STRIP_TRAILING_WHITESPACE
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ERROR_VARIABLE emrun_error
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RESULT_VARIABLE result)
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if(NOT emOutput)
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message(FATAL_ERROR
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"Can't determine Emscripten version! Error: ${emrun_error}")
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endif()
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string(REGEX MATCH "[0-9]+\\.[0-9]+\\.[0-9]+" CMAKE_EMSDK_REGEX_VERSION "${emOutput}")
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set(EMCC_VERSION "${CMAKE_EMSDK_REGEX_VERSION}" CACHE STRING INTERNAL FORCE)
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# find toolchain file
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if(NOT DEFINED CMAKE_TOOLCHAIN_FILE)
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set(wasm_toolchain_file "$ENV{EMSDK}/${EMROOT_PATH}/cmake/Modules/Platform/Emscripten.cmake")
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set(CMAKE_TOOLCHAIN_FILE "${wasm_toolchain_file}" CACHE STRING "" FORCE)
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endif()
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if(EXISTS "${CMAKE_TOOLCHAIN_FILE}")
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message(STATUS "Emscripten ${CMAKE_EMSDK_REGEX_VERSION} toolchain file detected at ${CMAKE_TOOLCHAIN_FILE}")
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else()
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message(FATAL_ERROR "Cannot find the toolchain file Emscripten.cmake. "
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"Please specify the toolchain file with -DCMAKE_TOOLCHAIN_FILE=<file>.")
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endif()
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set(QT_AUTODETECT_WASM TRUE CACHE BOOL "")
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if(NOT DEFINED BUILD_SHARED_LIBS)
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set(BUILD_SHARED_LIBS OFF CACHE BOOL "Build Qt statically or dynamically" FORCE)
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endif()
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if(BUILD_SHARED_LIBS)
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message(FATAL_ERROR
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"Building Qt for ${CMAKE_SYSTEM_NAME} as shared libraries is not supported.")
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endif()
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# this version of Qt needs this version of emscripten
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set(QT_EMCC_RECOMMENDED_VERSION 2.0.14 CACHE STRING INTERNAL FORCE)
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endif()
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endif()
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endfunction()
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function(qt_auto_detect_cmake_generator)
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if(NOT CMAKE_GENERATOR MATCHES "Ninja" AND NOT QT_SILENCE_CMAKE_GENERATOR_WARNING)
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message(WARNING
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"The officially supported CMake generator for building Qt is Ninja. "
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"You are using: '${CMAKE_GENERATOR}' instead. "
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"Thus, you might encounter issues. Use at your own risk.")
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endif()
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endfunction()
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# Peek into CMAKE_TOOLCHAIN_FILE before it is actually loaded.
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#
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# Usage:
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# qt_autodetect_read_toolchain_file(tcf VARIABLES CMAKE_SYSTEM_NAME)
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# if(tcf_CMAKE_SYSTEM_NAME STREQUAL "Android")
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# ...we have detected Android
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# endif()
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#
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function(qt_auto_detect_read_toolchain_file prefix)
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cmake_parse_arguments(arg "" "" "VARIABLES" ${ARGN})
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set(script_path "${CMAKE_CURRENT_LIST_DIR}/QtLoadFilePrintVars.cmake")
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execute_process(
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COMMAND "${CMAKE_COMMAND}" "-DIN_FILE=${CMAKE_TOOLCHAIN_FILE}"
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"-DVARIABLES=${arg_VARIABLES}" -P "${script_path}"
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RESULT_VARIABLE exit_code
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OUTPUT_VARIABLE output
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ERROR_VARIABLE ignore)
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if(NOT exit_code EQUAL 0)
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message(FATAL_ERROR "Executing CMake script ${script_path} failed with code ${exit_code}.")
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endif()
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string(REGEX REPLACE "^.*---QtLoadFilePrintVars---\n" "" output "${output}")
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string(REPLACE ";" "\;" output "${output}")
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string(REPLACE "\n" ";" output "${output}")
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foreach(line IN LISTS output)
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string(REGEX MATCH "-- ([^ ]+) (.*)" m "${line}")
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if(CMAKE_MATCH_1 IN_LIST arg_VARIABLES)
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set(${prefix}_${CMAKE_MATCH_1} "${CMAKE_MATCH_2}" PARENT_SCOPE)
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endif()
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endforeach()
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endfunction()
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function(qt_auto_detect_android)
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# Auto-detect NDK root
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if(NOT DEFINED ANDROID_NDK_ROOT AND DEFINED ANDROID_SDK_ROOT)
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file(GLOB ndk_versions LIST_DIRECTORIES true RELATIVE "${ANDROID_SDK_ROOT}/ndk"
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"${ANDROID_SDK_ROOT}/ndk/*")
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unset(ndk_root)
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if(NOT ndk_versions STREQUAL "")
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# Use the NDK with the highest version number.
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if(CMAKE_VERSION VERSION_LESS 3.18)
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list(SORT ndk_versions)
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list(REVERSE ndk_versions)
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else()
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list(SORT ndk_versions COMPARE NATURAL ORDER DESCENDING)
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endif()
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list(GET ndk_versions 0 ndk_root)
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string(PREPEND ndk_root "${ANDROID_SDK_ROOT}/ndk/")
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else()
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# Fallback: use the deprecated "ndk-bundle" directory within the SDK root.
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set(ndk_root "${ANDROID_SDK_ROOT}/ndk-bundle")
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if(NOT IS_DIRECTORY "${ndk_root}")
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unset(ndk_root)
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endif()
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endif()
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if(DEFINED ndk_root)
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message(STATUS "Android NDK detected: ${ndk_root}")
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set(ANDROID_NDK_ROOT "${ndk_root}" CACHE STRING "")
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endif()
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endif()
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# Auto-detect toolchain file
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if(NOT DEFINED CMAKE_TOOLCHAIN_FILE AND DEFINED ANDROID_NDK_ROOT)
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set(toolchain_file "${ANDROID_NDK_ROOT}/build/cmake/android.toolchain.cmake")
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if(EXISTS "${toolchain_file}")
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message(STATUS "Android toolchain file within NDK detected: ${toolchain_file}")
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set(CMAKE_TOOLCHAIN_FILE "${toolchain_file}" CACHE STRING "")
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else()
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message(FATAL_ERROR "Cannot find the toolchain file '${toolchain_file}'. "
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"Please specify the toolchain file with -DCMAKE_TOOLCHAIN_FILE=<file>.")
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endif()
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endif()
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if("${CMAKE_TOOLCHAIN_FILE}" STREQUAL ""
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AND (DEFINED ANDROID_ABI OR DEFINED ANDROID_NATIVE_API_LEVEL))
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message(FATAL_ERROR "An Android build was requested, but no Android toolchain file was "
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"specified nor detected.")
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endif()
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if(DEFINED CMAKE_TOOLCHAIN_FILE AND NOT DEFINED QT_AUTODETECT_ANDROID)
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qt_auto_detect_read_toolchain_file(tcf VARIABLES CMAKE_SYSTEM_NAME)
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if(tcf_CMAKE_SYSTEM_NAME STREQUAL "Android")
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set(android_detected TRUE)
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else()
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set(android_detected FALSE)
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endif()
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if(android_detected)
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message(STATUS "Android toolchain file detected, checking configuration defaults...")
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if(NOT DEFINED ANDROID_NATIVE_API_LEVEL)
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message(STATUS "ANDROID_NATIVE_API_LEVEL was not specified, using API level 23 as default")
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set(ANDROID_NATIVE_API_LEVEL 23 CACHE STRING "")
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endif()
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if(NOT DEFINED ANDROID_STL)
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set(ANDROID_STL "c++_shared" CACHE STRING "")
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endif()
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endif()
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set(QT_AUTODETECT_ANDROID ${android_detected} CACHE STRING "")
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elseif (QT_AUTODETECT_ANDROID)
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message(STATUS "Android toolchain file detected")
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endif()
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endfunction()
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function(qt_auto_detect_vpckg)
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if(DEFINED ENV{VCPKG_ROOT})
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set(vcpkg_toolchain_file "$ENV{VCPKG_ROOT}/scripts/buildsystems/vcpkg.cmake")
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get_filename_component(vcpkg_toolchain_file "${vcpkg_toolchain_file}" ABSOLUTE)
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if(DEFINED CMAKE_TOOLCHAIN_FILE)
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get_filename_component(supplied_toolchain_file "${CMAKE_TOOLCHAIN_FILE}" ABSOLUTE)
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if(NOT supplied_toolchain_file STREQUAL vcpkg_toolchain_file)
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set(VCPKG_CHAINLOAD_TOOLCHAIN_FILE "${CMAKE_TOOLCHAIN_FILE}" CACHE STRING "")
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endif()
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unset(supplied_toolchain_file)
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endif()
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set(CMAKE_TOOLCHAIN_FILE "${vcpkg_toolchain_file}" CACHE STRING "" FORCE)
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message(STATUS "Using vcpkg from $ENV{VCPKG_ROOT}")
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if(DEFINED ENV{VCPKG_DEFAULT_TRIPLET} AND NOT DEFINED VCPKG_TARGET_TRIPLET)
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set(VCPKG_TARGET_TRIPLET "$ENV{VCPKG_DEFAULT_TRIPLET}" CACHE STRING "")
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message(STATUS "Using vcpkg triplet ${VCPKG_TARGET_TRIPLET}")
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endif()
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unset(vcpkg_toolchain_file)
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message(STATUS "CMAKE_TOOLCHAIN_FILE is: ${CMAKE_TOOLCHAIN_FILE}")
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if(DEFINED VCPKG_CHAINLOAD_TOOLCHAIN_FILE)
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message(STATUS "VCPKG_CHAINLOAD_TOOLCHAIN_FILE is: ${VCPKG_CHAINLOAD_TOOLCHAIN_FILE}")
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endif()
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endif()
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endfunction()
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function(qt_auto_detect_ios)
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if(CMAKE_SYSTEM_NAME STREQUAL iOS
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OR CMAKE_SYSTEM_NAME STREQUAL watchOS
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OR CMAKE_SYSTEM_NAME STREQUAL tvOS)
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message(STATUS "Using internal CMake ${CMAKE_SYSTEM_NAME} toolchain file.")
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# The QT_UIKIT_SDK check simulates the input.sdk condition for simulator_and_device in
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# configure.json.
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# If the variable is explicitly provided, assume simulator_and_device to be off.
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if(QT_UIKIT_SDK)
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set(simulator_and_device OFF)
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else()
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# Default to simulator_and_device when an explicit sdk is not requested.
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# Requires CMake 3.17.0+.
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set(simulator_and_device ON)
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endif()
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message(STATUS "simulator_and_device set to: \"${simulator_and_device}\".")
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# Choose relevant architectures.
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# Using a non xcode generator requires explicit setting of the
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# architectures, otherwise compilation fails with unknown defines.
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if(CMAKE_SYSTEM_NAME STREQUAL iOS)
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if(simulator_and_device)
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set(osx_architectures "arm64;x86_64")
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elseif(QT_UIKIT_SDK STREQUAL "iphoneos")
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set(osx_architectures "arm64")
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elseif(QT_UIKIT_SDK STREQUAL "iphonesimulator")
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set(osx_architectures "x86_64")
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else()
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if(NOT DEFINED QT_UIKIT_SDK)
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message(FATAL_ERROR "Please proviude a value for -DQT_UIKIT_SDK."
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" Possible values: iphoneos, iphonesimulator.")
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else()
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message(FATAL_ERROR
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"Unknown SDK argument given to QT_UIKIT_SDK: ${QT_UIKIT_SDK}.")
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endif()
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endif()
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elseif(CMAKE_SYSTEM_NAME STREQUAL tvOS)
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if(simulator_and_device)
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set(osx_architectures "arm64;x86_64")
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elseif(QT_UIKIT_SDK STREQUAL "appletvos")
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set(osx_architectures "arm64")
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elseif(QT_UIKIT_SDK STREQUAL "appletvsimulator")
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set(osx_architectures "x86_64")
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else()
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if(NOT DEFINED QT_UIKIT_SDK)
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message(FATAL_ERROR "Please proviude a value for -DQT_UIKIT_SDK."
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" Possible values: appletvos, appletvsimulator.")
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else()
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message(FATAL_ERROR
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"Unknown SDK argument given to QT_UIKIT_SDK: ${QT_UIKIT_SDK}.")
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endif()
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endif()
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elseif(CMAKE_SYSTEM_NAME STREQUAL watchOS)
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if(simulator_and_device)
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set(osx_architectures "armv7k;i386")
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elseif(QT_UIKIT_SDK STREQUAL "watchos")
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set(osx_architectures "armv7k")
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elseif(QT_UIKIT_SDK STREQUAL "watchsimulator")
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set(osx_architectures "i386")
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else()
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if(NOT DEFINED QT_UIKIT_SDK)
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message(FATAL_ERROR "Please proviude a value for -DQT_UIKIT_SDK."
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" Possible values: watchos, watchsimulator.")
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else()
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message(FATAL_ERROR
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"Unknown SDK argument given to QT_UIKIT_SDK: ${QT_UIKIT_SDK}.")
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endif()
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endif()
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endif()
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# For non simulator_and_device builds, we need to explicitly set the SYSROOT aka the sdk
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# value.
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if(QT_UIKIT_SDK)
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set(CMAKE_OSX_SYSROOT "${QT_UIKIT_SDK}" CACHE STRING "")
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endif()
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set(CMAKE_OSX_ARCHITECTURES "${osx_architectures}" CACHE STRING "")
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if(NOT DEFINED BUILD_SHARED_LIBS)
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set(BUILD_SHARED_LIBS OFF CACHE BOOL "Build Qt statically or dynamically" FORCE)
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endif()
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if(BUILD_SHARED_LIBS)
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message(FATAL_ERROR
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"Building Qt for ${CMAKE_SYSTEM_NAME} as shared libraries is not supported.")
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endif()
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# Disable qt rpaths for iOS, just like mkspecs/common/uikit.conf does, due to those
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# bundles not being able to use paths outside the app bundle. Not sure this is strictly
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# needed though.
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set(QT_DISABLE_RPATH "OFF" CACHE BOOL "Disable automatic Qt rpath handling." FORCE)
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endif()
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endfunction()
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function(qt_auto_detect_cmake_config)
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if(CMAKE_CONFIGURATION_TYPES)
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# Allow users to specify this option.
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if(NOT QT_MULTI_CONFIG_FIRST_CONFIG)
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list(GET CMAKE_CONFIGURATION_TYPES 0 first_config_type)
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set(QT_MULTI_CONFIG_FIRST_CONFIG "${first_config_type}")
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set(QT_MULTI_CONFIG_FIRST_CONFIG "${first_config_type}" PARENT_SCOPE)
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endif()
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set(CMAKE_TRY_COMPILE_CONFIGURATION "${QT_MULTI_CONFIG_FIRST_CONFIG}" PARENT_SCOPE)
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if(CMAKE_GENERATOR STREQUAL "Ninja Multi-Config")
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# Create build-<config>.ninja files for all specified configurations.
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set(CMAKE_CROSS_CONFIGS "all" CACHE STRING "")
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# The configuration that will be considered the main one (for example when
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# configuring standalone tests with a single-config generator like Ninja).
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set(CMAKE_DEFAULT_BUILD_TYPE "${QT_MULTI_CONFIG_FIRST_CONFIG}" CACHE STRING "")
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# By default when ninja is called without parameters, it will build all configurations.
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set(CMAKE_DEFAULT_CONFIGS "all" CACHE STRING "")
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endif()
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endif()
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endfunction()
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function(qt_auto_detect_cyclic_toolchain)
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if(CMAKE_TOOLCHAIN_FILE AND CMAKE_TOOLCHAIN_FILE MATCHES "/qt.toolchain.cmake$")
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message(FATAL_ERROR
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"Woah there! You can't use the Qt generated qt.toolchain.cmake file to configure "
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"qtbase, because that will create a toolchain file that includes itself!\n"
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"Did you accidentally use qt-cmake to configure qtbase? Make sure to remove the "
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"CMakeCache.txt file, and configure qtbase with 'cmake' instead of 'qt-cmake'.")
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endif()
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endfunction()
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function(qt_internal_get_darwin_sdk_version out_var)
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if(APPLE)
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if(IOS)
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set(sdk_name "iphoneos")
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elseif(TVOS)
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set(sdk_name "appletvos")
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elseif(WATCHOS)
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set(sdk_name "watchos")
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else()
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# Default to macOS
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set(sdk_name "macosx")
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endif()
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set(xcrun_version_arg "--show-sdk-version")
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execute_process(COMMAND /usr/bin/xcrun --sdk ${sdk_name} ${xcrun_version_arg}
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OUTPUT_VARIABLE sdk_version
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ERROR_VARIABLE xcrun_error)
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if(NOT sdk_version)
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message(FATAL_ERROR
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"Can't determine darwin ${sdk_name} SDK version. Error: ${xcrun_error}")
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endif()
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string(STRIP "${sdk_version}" sdk_version)
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set(${out_var} "${sdk_version}" PARENT_SCOPE)
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endif()
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endfunction()
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function(qt_internal_get_xcode_version out_var)
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if(APPLE)
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execute_process(COMMAND /usr/bin/xcrun xcodebuild -version
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OUTPUT_VARIABLE xcode_version
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ERROR_VARIABLE xcrun_error)
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if(NOT xcode_version)
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message(NOTICE "Can't determine Xcode version. Error: ${xcrun_error}")
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endif()
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string(REPLACE "\n" " " xcode_version "${xcode_version}")
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string(STRIP "${xcode_version}" xcode_version)
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set(${out_var} "${xcode_version}" PARENT_SCOPE)
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endif()
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endfunction()
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function(qt_auto_detect_darwin)
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if(APPLE)
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# If no CMAKE_OSX_DEPLOYMENT_TARGET is provided, default to a value that Qt defines.
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# This replicates the behavior in mkspecs/common/macx.conf where
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# QMAKE_MACOSX_DEPLOYMENT_TARGET is set.
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set(description
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"Minimum OS X version to target for deployment (at runtime); newer APIs weak linked. Set to empty string for default value.")
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if(NOT CMAKE_OSX_DEPLOYMENT_TARGET)
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if(NOT CMAKE_SYSTEM_NAME)
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# macOS
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set(version "10.14")
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elseif(CMAKE_SYSTEM_NAME STREQUAL iOS)
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set(version "13.0")
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elseif(CMAKE_SYSTEM_NAME STREQUAL watchOS)
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set(version "6.0")
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elseif(CMAKE_SYSTEM_NAME STREQUAL tvOS)
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set(version "13.0")
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endif()
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if(version)
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set(CMAKE_OSX_DEPLOYMENT_TARGET "${version}" CACHE STRING "${description}")
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endif()
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endif()
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qt_internal_get_darwin_sdk_version(darwin_sdk_version)
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set(QT_MAC_SDK_VERSION "${darwin_sdk_version}" CACHE STRING "Darwin SDK version.")
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qt_internal_get_xcode_version(xcode_version)
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set(QT_MAC_XCODE_VERSION "${xcode_version}" CACHE STRING "Xcode version.")
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set(device_names "iOS" "watchOS" "tvOS")
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list(LENGTH CMAKE_OSX_ARCHITECTURES arch_count)
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if(NOT CMAKE_SYSTEM_NAME IN_LIST device_names AND arch_count GREATER 0)
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foreach(arch ${CMAKE_OSX_ARCHITECTURES})
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if(arch STREQUAL "arm64e")
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message(WARNING "Applications built against an arm64e Qt architecture will "
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"likely fail to run on Apple Silicon. Consider targeting "
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"'arm64' instead.")
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endif()
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endforeach()
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endif()
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endif()
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endfunction()
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function(qt_auto_detect_macos_universal)
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set(device_names "iOS" "watchOS" "tvOS")
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if(APPLE AND NOT CMAKE_SYSTEM_NAME IN_LIST device_names)
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list(LENGTH CMAKE_OSX_ARCHITECTURES arch_count)
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set(is_universal "OFF")
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if(arch_count GREATER 1)
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set(is_universal "ON")
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endif()
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set(QT_IS_MACOS_UNIVERSAL "${is_universal}" CACHE INTERNAL "Build universal Qt for macOS")
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endif()
|
|
endfunction()
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|
|
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function(qt_auto_detect_pch)
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set(default_value "ON")
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|
|
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if(CMAKE_OSX_ARCHITECTURES AND CMAKE_VERSION VERSION_LESS 3.18.0 AND NOT QT_FORCE_PCH)
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list(LENGTH CMAKE_OSX_ARCHITECTURES arch_count)
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|
# CMake versions lower than 3.18 don't support PCH when multiple architectures are set.
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|
# This is the case for simulator_and_device builds.
|
|
if(arch_count GREATER 1)
|
|
set(default_value "OFF")
|
|
message(WARNING "PCH support disabled due to usage of multiple architectures.")
|
|
endif()
|
|
endif()
|
|
|
|
option(BUILD_WITH_PCH "Build Qt using precompiled headers?" "${default_value}")
|
|
endfunction()
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|
|
|
qt_auto_detect_cmake_generator()
|
|
qt_auto_detect_cyclic_toolchain()
|
|
qt_auto_detect_cmake_config()
|
|
qt_auto_detect_darwin()
|
|
qt_auto_detect_macos_universal()
|
|
qt_auto_detect_ios()
|
|
qt_auto_detect_android()
|
|
qt_auto_detect_vpckg()
|
|
qt_auto_detect_pch()
|
|
qt_auto_detect_wasm()
|