6fec7eae31
Our only way to detect whether the user requests an Android build of Qt was to peek into the CMake toolchain file if it is specified. If the toolchain file contains a certain magic string, we decide that we're building for Android. This approach is fragile and bound to break should the Android toolchain file's magic string ever change. Now, we assume an Android build if any of our ANDROID_* cache variables is set. In that case, we do not peek into the toolchain file. Pick-to: 6.2 Fixes: QTBUG-94955 Change-Id: Ie2f0ac0963f90f09805e311111bb6912d4325ada Reviewed-by: Alexandru Croitor <alexandru.croitor@qt.io>
446 lines
19 KiB
CMake
446 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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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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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 ${android_detected} CACHE STRING "")
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elseif (QT_AUTODETECT_ANDROID)
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message(STATUS "Android build detected")
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endif()
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endfunction()
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function(qt_auto_detect_vcpkg)
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if(DEFINED ENV{VCPKG_ROOT})
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set(vcpkg_toolchain_file "$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()
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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)
|
|
# CMake versions lower than 3.18 don't support PCH when multiple architectures are set.
|
|
# 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?" "${default_value}")
|
|
endfunction()
|
|
|
|
function(qt_auto_detect_win32_arm)
|
|
if("${QT_QMAKE_TARGET_MKSPEC}" STREQUAL "win32-arm64-msvc")
|
|
set(CMAKE_SYSTEM_NAME "Windows" CACHE STRING "")
|
|
set(CMAKE_SYSTEM_VERSION "10" CACHE STRING "")
|
|
set(CMAKE_SYSTEM_PROCESSOR "arm64" CACHE STRING "")
|
|
endif()
|
|
endfunction()
|
|
|
|
|
|
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_vcpkg()
|
|
qt_auto_detect_pch()
|
|
qt_auto_detect_wasm()
|
|
qt_auto_detect_win32_arm()
|