b3f27f75b6
Vcpkg detection is enabled by default, but we did not have a flag to disable it, and it was not showing up in config.summary either. By adding a -vcpkg flag, we get to use `-no-vcpkg` when necessary, as well as adding an entry to config summary indicating whether vcpkg is in use or not. Besides `-no-vcpkg`, one can pass `-DQT_USE_VCPKG=OFF` to cmake command in order to disable the automatic vcpkg detection/integration. [ChangeLog][configure] vcpkg detection, and integration can be disabled by passing the -no-vcpkg flag to the configure command, or by passing `-DQT_USE_VCPKG=OFF` to the cmake command. Pick-to: 6.6 Change-Id: Ide8da70a7b473ec23995104d162356e75e6d1240 Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
510 lines
22 KiB
CMake
510 lines
22 KiB
CMake
# Copyright (C) 2022 The Qt Company Ltd.
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# SPDX-License-Identifier: BSD-3-Clause
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#
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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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# This needs to be here because QtAutoDetect loads before any other modules
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option(QT_USE_VCPKG "Enable the use of vcpkg" ON)
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function(qt_internal_ensure_static_qt_config)
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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 ${CMAKE_SYSTEM_NAME} as shared libraries is not supported.")
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endif()
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endfunction()
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include("${CMAKE_CURRENT_LIST_DIR}/QtPublicWasmToolchainHelpers.cmake")
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function(qt_auto_detect_wasm)
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if("${QT_QMAKE_TARGET_MKSPEC}" STREQUAL "wasm-emscripten" OR "${QT_QMAKE_TARGET_MKSPEC}" STREQUAL "wasm-emscripten-64")
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if (NOT DEFINED ENV{EMSDK})
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message(FATAL_ERROR
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"Can't find an Emscripten SDK! Make sure the EMSDK environment variable is "
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"available by activating and sourcing the emscripten sdk. Also ensure emcc is in "
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"your path.")
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endif()
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if(NOT DEFINED QT_AUTODETECT_WASM_IS_DONE)
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message(STATUS "Extracting Emscripten SDK info from EMSDK env var: $ENV{EMSDK}")
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__qt_internal_get_emroot_path_suffix_from_emsdk_env(EMROOT_PATH)
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__qt_internal_query_emsdk_version("${EMROOT_PATH}" TRUE CMAKE_EMSDK_REGEX_VERSION)
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set(EMCC_VERSION "${CMAKE_EMSDK_REGEX_VERSION}" CACHE STRING INTERNAL FORCE)
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if(NOT DEFINED BUILD_SHARED_LIBS)
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qt_internal_ensure_static_qt_config()
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endif()
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# Find toolchain file
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if(NOT DEFINED CMAKE_TOOLCHAIN_FILE)
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__qt_internal_get_emscripten_cmake_toolchain_file_path_from_emsdk_env(
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"${EMROOT_PATH}" wasm_toolchain_file)
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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
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"Emscripten ${EMCC_VERSION} toolchain file detected at ${CMAKE_TOOLCHAIN_FILE}")
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else()
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__qt_internal_show_error_no_emscripten_toolchain_file_found_when_building_qt()
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endif()
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__qt_internal_get_emcc_recommended_version(recommended_version)
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set(QT_EMCC_RECOMMENDED_VERSION "${recommended_version}" CACHE STRING INTERNAL FORCE)
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set(QT_AUTODETECT_WASM_IS_DONE TRUE CACHE BOOL "")
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else()
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message(STATUS
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"Reusing cached Emscripten ${EMCC_VERSION} toolchain file detected at "
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"${CMAKE_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_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: '${CMAKE_GENERATOR}' instead. "
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"Thus, you might encounter issues. Use at your own risk.")
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endif()
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endfunction()
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function(qt_auto_detect_android)
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# We assume an Android build if any of the ANDROID_* cache variables are set.
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if(DEFINED ANDROID_SDK_ROOT
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OR DEFINED ANDROID_NDK_ROOT
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OR DEFINED ANDROID_ABI
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OR DEFINED ANDROID_NATIVE_ABI_LEVEL
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OR DEFINED ANDROID_STL)
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set(android_detected TRUE)
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else()
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set(android_detected FALSE)
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endif()
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# Auto-detect NDK root
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if(NOT DEFINED ANDROID_NDK_ROOT AND DEFINED ANDROID_SDK_ROOT)
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file(GLOB ndk_versions LIST_DIRECTORIES true RELATIVE "${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(NOT DEFINED CMAKE_TOOLCHAIN_FILE AND android_detected)
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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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# Peek into the toolchain file and check if it looks like an Android one.
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if(NOT android_detected)
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file(READ ${CMAKE_TOOLCHAIN_FILE} toolchain_file_content OFFSET 0 LIMIT 80)
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string(FIND "${toolchain_file_content}" "The Android Open Source Project"
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find_result REVERSE)
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if(NOT ${find_result} EQUAL -1)
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set(android_detected TRUE)
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endif()
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endif()
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if(android_detected)
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message(STATUS "Android build detected, checking configuration defaults...")
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# ANDROID_NATIVE_API_LEVEL is an just an alias to ANDROID_PLATFORM, check for both
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if(NOT DEFINED ANDROID_PLATFORM AND NOT DEFINED ANDROID_NATIVE_API_LEVEL)
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message(STATUS "Neither ANDROID_PLATFORM nor ANDROID_NATIVE_API_LEVEL were specified, using API level 23 as default")
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set(ANDROID_PLATFORM "android-23" CACHE STRING "")
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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 ${android_detected} CACHE STRING "")
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elseif (QT_AUTODETECT_ANDROID)
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message(STATUS "Android build detected")
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endif()
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endfunction()
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function(qt_auto_detect_vcpkg)
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if(QT_USE_VCPKG AND DEFINED ENV{VCPKG_ROOT})
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set(vcpkg_toolchain_file "$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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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(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 provide 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: ${QT_UIKIT_SDK}.")
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endif()
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endif()
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# For non simulator_and_device builds, we need to explicitly set the SYSROOT aka the sdk
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# value.
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if(QT_UIKIT_SDK)
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set(CMAKE_OSX_SYSROOT "${QT_UIKIT_SDK}" CACHE STRING "")
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endif()
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set(CMAKE_OSX_ARCHITECTURES "${osx_architectures}" CACHE STRING "")
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if(NOT DEFINED BUILD_SHARED_LIBS)
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qt_internal_ensure_static_qt_config()
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endif()
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# Disable qt rpaths for iOS, just like mkspecs/common/uikit.conf does, due to those
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# bundles not being able to use paths outside the app bundle. Not sure this is strictly
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# needed though.
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set(QT_DISABLE_RPATH "OFF" CACHE BOOL "Disable automatic Qt rpath handling." FORCE)
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endif()
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endfunction()
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function(qt_auto_detect_cmake_config)
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if(CMAKE_CONFIGURATION_TYPES)
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# Allow users to specify this option.
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if(NOT QT_MULTI_CONFIG_FIRST_CONFIG)
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list(GET CMAKE_CONFIGURATION_TYPES 0 first_config_type)
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set(QT_MULTI_CONFIG_FIRST_CONFIG "${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(CMAKE_SYSTEM_NAME STREQUAL iOS)
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set(sdk_name "iphoneos")
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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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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 "11.0")
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elseif(CMAKE_SYSTEM_NAME STREQUAL iOS)
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set(version "14.0")
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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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list(LENGTH CMAKE_OSX_ARCHITECTURES arch_count)
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if(NOT CMAKE_SYSTEM_NAME STREQUAL iOS AND arch_count GREATER 0)
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foreach(arch ${CMAKE_OSX_ARCHITECTURES})
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if(arch STREQUAL "arm64e")
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message(WARNING "Applications built against an arm64e Qt architecture will "
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"likely fail to run on Apple Silicon. Consider targeting "
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"'arm64' instead.")
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endif()
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endforeach()
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endif()
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endif()
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endfunction()
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function(qt_auto_detect_macos_universal)
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if(APPLE AND NOT CMAKE_SYSTEM_NAME STREQUAL iOS)
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list(LENGTH CMAKE_OSX_ARCHITECTURES arch_count)
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set(is_universal "OFF")
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if(arch_count GREATER 1)
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set(is_universal "ON")
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endif()
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set(QT_IS_MACOS_UNIVERSAL "${is_universal}" CACHE INTERNAL "Build universal Qt for macOS")
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endif()
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endfunction()
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function(qt_auto_detect_pch)
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set(default_value "ON")
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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.
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if(arch_count GREATER 1)
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set(default_value "OFF")
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message(WARNING "PCH support disabled due to usage of multiple architectures.")
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endif()
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endif()
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option(BUILD_WITH_PCH "Build Qt using precompiled headers?" "${default_value}")
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endfunction()
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function(qt_auto_detect_win32_arm)
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if("${QT_QMAKE_TARGET_MKSPEC}" STREQUAL "win32-arm64-msvc")
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set(CMAKE_SYSTEM_NAME "Windows" CACHE STRING "")
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set(CMAKE_SYSTEM_VERSION "10" CACHE STRING "")
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set(CMAKE_SYSTEM_PROCESSOR "arm64" CACHE STRING "")
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endif()
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endfunction()
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function(qt_auto_detect_linux_x86)
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if("${QT_QMAKE_TARGET_MKSPEC}" STREQUAL "linux-g++-32" AND NOT QT_NO_AUTO_DETECT_LINUX_X86)
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# Add flag to ensure code is compiled for 32bit x86 ABI aka i386 or its flavors.
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set(__qt_toolchain_common_flags_init "-m32")
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if(NOT QT_NO_OVERRIDE_LANG_FLAGS_INIT)
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set(CMAKE_C_FLAGS_INIT "${__qt_toolchain_common_flags_init}" PARENT_SCOPE)
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set(CMAKE_CXX_FLAGS_INIT "${__qt_toolchain_common_flags_init}" PARENT_SCOPE)
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set(CMAKE_ASM_FLAGS_INIT "${__qt_toolchain_common_flags_init}" PARENT_SCOPE)
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endif()
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# Each distro places arch-specific libraries according to its own file system layout.
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#
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# https://wiki.debian.org/Multiarch/TheCaseForMultiarch
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# https://wiki.ubuntu.com/MultiarchSpec
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# https://wiki.gentoo.org/wiki/Project:AMD64/Multilib_layout
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# https://wiki.archlinux.org/title/official_repositories#multilib
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# https://documentation.suse.com/sles/15-SP3/html/SLES-all/cha-64bit.html
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# https://pilotlogic.com/sitejoom/index.php/wiki?id=398
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# https://unix.stackexchange.com/questions/458069/multilib-and-multiarch
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#
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# CMake can usually find 32 bit libraries just fine on its own.
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# find_library will use prefixes from CMAKE_PREFIX_PATH / CMAKE_SYSTEM_PREFIX_PATH
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# and add arch-specific lib folders like 'lib/i386-linux-gnu' on debian based systems
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# or lib32/lib64 on other distros.
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# The problem is that if no 32 bit library is found, a 64 bit one might get picked up.
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# That's why we need to specify additional ignore paths.
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#
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# The paths used in the code below are Ubuntu specific.
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# You can opt out of using them if you are using a different distro, but then you need to
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# specify appropriate paths yourself in your own CMake toolchain file.
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#
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# Note that to absolutely ensure no x86_64 library is picked up on a multiarch /
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# multilib-enabled system, you might need to specify extra directories in
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# CMAKE_INGORE_PATH for each sub-directory containing a library.
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#
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# For example to exclude /usr/lib/x86_64-linux-gnu/mit-krb5/libgssapi_krb5.so
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# you need to add /usr/lib/x86_64-linux-gnu/mit-krb5 explicitly to CMAKE_IGNORE_PATH.
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# Adding just /usr/lib/x86_64-linux-gnu to either CMAKE_IGNORE_PATH or
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# CMAKE_IGNORE_PREFIX_PATH is not enough.
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#
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# Another consideration are results returned by CMake's pkg_check_modules which uses
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# pkg-config.
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# CMAKE_IGNORE_PATH is not read by pkg_check_modules, but CMAKE_PREFIX_PATH
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# values are passed as additional prefixes to look for .pc files, IN ADDITION to the default
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# prefixes searched by pkg-config of each specific distro.
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# For example on Ubuntu, the default searched paths on an x86_64 host are:
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# /usr/local/lib/x86_64-linux-gnu/pkgconfig
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# /usr/local/lib/pkgconfig
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# /usr/local/share/pkgconfig
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# /usr/lib/x86_64-linux-gnu/pkgconfig
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# /usr/lib/pkgconfig
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# /usr/share/pkgconfig
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# To ensure the x86_64 packages are not picked up, the PKG_CONFIG_LIBDIR environment
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# variable can be overridden with an explicit list of prefixes.
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# Again, the paths below are Ubuntu specific.
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if(NOT QT_NO_OVERRIDE_CMAKE_IGNORE_PATH)
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set(linux_x86_ignore_path "/usr/lib/x86_64-linux-gnu;/lib/x86_64-linux-gnu")
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set(CMAKE_IGNORE_PATH "${linux_x86_ignore_path}" PARENT_SCOPE)
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set_property(GLOBAL PROPERTY
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_qt_internal_linux_x86_ignore_path "${linux_x86_ignore_path}")
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endif()
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if(NOT QT_NO_OVERRIDE_PKG_CONFIG_LIBDIR)
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set(pc_config_libdir "")
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list(APPEND pc_config_libdir "/usr/local/lib/i386-linux-gnu/pkgconfig")
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list(APPEND pc_config_libdir "/usr/local/lib/pkgconfig")
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list(APPEND pc_config_libdir "/usr/local/share/pkgconfig")
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list(APPEND pc_config_libdir "/usr/lib/i386-linux-gnu/pkgconfig")
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list(APPEND pc_config_libdir "/usr/lib/pkgconfig")
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list(APPEND pc_config_libdir "/usr/share/pkgconfig")
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list(JOIN pc_config_libdir ":" pc_config_libdir)
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set_property(GLOBAL PROPERTY
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_qt_internal_linux_x86_pc_config_libdir "${pc_config_libdir}")
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# Overrides the default prefix list.
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set(ENV{PKG_CONFIG_LIBDIR} "${pc_config_libdir}")
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# Overrides the additional prefixes list.
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set(ENV{PKG_CONFIG_DIR} "")
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endif()
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endif()
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endfunction()
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function(qt_auto_detect_integrity)
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if(
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# Qt's custom CMake toolchain file sets this value.
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CMAKE_SYSTEM_NAME STREQUAL "Integrity" OR
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# Upstream CMake expects this name, but we don't currently use it in Qt.
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CMAKE_SYSTEM_NAME STREQUAL "GHS-MULTI"
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)
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qt_internal_ensure_static_qt_config()
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endif()
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endfunction()
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# Save the build type before project() might set one.
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# This allows us to determine if the user has set an explicit build type that we should use.
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function(qt_auto_detect_cmake_build_type)
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set(__qt_auto_detect_cmake_build_type_before_project_call "${CMAKE_BUILD_TYPE}" PARENT_SCOPE)
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endfunction()
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# Let CMake load our custom platform modules.
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# CMake-provided platform modules take precedence.
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if(NOT QT_AVOID_CUSTOM_PLATFORM_MODULES)
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list(PREPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/platforms")
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endif()
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qt_auto_detect_cmake_generator()
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qt_auto_detect_cyclic_toolchain()
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qt_auto_detect_cmake_config()
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qt_auto_detect_darwin()
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qt_auto_detect_macos_universal()
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qt_auto_detect_ios()
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qt_auto_detect_android()
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qt_auto_detect_vcpkg()
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qt_auto_detect_pch()
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qt_auto_detect_wasm()
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qt_auto_detect_win32_arm()
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qt_auto_detect_linux_x86()
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qt_auto_detect_integrity()
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qt_auto_detect_cmake_build_type()
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