qt5base-lts/cmake/QtAutoDetect.cmake

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# Copyright (C) 2022 The Qt Company Ltd.
# SPDX-License-Identifier: BSD-3-Clause
#
# Collection of auto detection routines to improve the user experience when
# building Qt from source.
#
Make standalone tests build via top level repo project Previously repo/tests/CMakeLists.txt was a standalone project on which CMake could be called. This was useful for Coin to be able to build and package only tests, but was a bit troublesome because that means having to specify the usual boilerplate like minimum CMake version, which packages to find in every tests.pro project. Instead of having a separate standalone project, modify the top level project and associated CMake code to allow passing a special QT_BUILD_STANDALONE_TESTS variable, which causes the top level project to build only tests, and find Qt in the previously installed qt location. This also means that when building a repo, we generate a ${repo_name}TestsConfig.cmake file which does find_package on all the modules that have been built as part of that repo. So that when standalone tests bare built for that repo, the modules are automatically found. qt_set_up_standalone_tests_build() is modified to be a no-op because it is not needed anymore. Its usage should be removed from all the other repos, and then removed from qtbase. Non-adjusted tests/CMakeLists.txt projects in other repositories should still be buildable with the current code, until they are updated to the new format. Adjust the Coin build instructions to build the standalone tests in a separate directory. Adjust pro2cmake to generate new structure for the tests/tests.pro projects. Adjust the qtbase tests project. Fixes: QTBUG-79239 Change-Id: Ib4b66bc772d8876cdcbae1e90ce5a5a5234fa675 Reviewed-by: Qt CMake Build Bot Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
2019-11-01 10:48:23 +00:00
# Make sure to not run detection when building standalone tests, because the detection was already
# done when initially configuring qtbase.
function(qt_internal_ensure_static_qt_config)
if(NOT DEFINED BUILD_SHARED_LIBS)
set(BUILD_SHARED_LIBS OFF CACHE BOOL "Build Qt statically or dynamically" FORCE)
endif()
if(BUILD_SHARED_LIBS)
message(FATAL_ERROR
"Building Qt for ${CMAKE_SYSTEM_NAME} as shared libraries is not supported.")
endif()
endfunction()
include("${CMAKE_CURRENT_LIST_DIR}/QtPublicWasmToolchainHelpers.cmake")
function(qt_auto_detect_wasm)
if("${QT_QMAKE_TARGET_MKSPEC}" STREQUAL "wasm-emscripten" OR "${QT_QMAKE_TARGET_MKSPEC}" STREQUAL "wasm-emscripten-64")
if (NOT DEFINED ENV{EMSDK})
message(FATAL_ERROR
"Can't find an Emscripten SDK! Make sure the EMSDK environment variable is "
"available by activating and sourcing the emscripten sdk. Also ensure emcc is in "
"your path.")
endif()
if(NOT DEFINED QT_AUTODETECT_WASM_IS_DONE)
message(STATUS "Extracting Emscripten SDK info from EMSDK env var: $ENV{EMSDK}")
__qt_internal_get_emroot_path_suffix_from_emsdk_env(EMROOT_PATH)
__qt_internal_query_emsdk_version("${EMROOT_PATH}" TRUE CMAKE_EMSDK_REGEX_VERSION)
set(EMCC_VERSION "${CMAKE_EMSDK_REGEX_VERSION}" CACHE STRING INTERNAL FORCE)
if(NOT DEFINED BUILD_SHARED_LIBS)
qt_internal_ensure_static_qt_config()
endif()
# Find toolchain file
if(NOT DEFINED CMAKE_TOOLCHAIN_FILE)
__qt_internal_get_emscripten_cmake_toolchain_file_path_from_emsdk_env(
"${EMROOT_PATH}" wasm_toolchain_file)
set(CMAKE_TOOLCHAIN_FILE "${wasm_toolchain_file}" CACHE STRING "" FORCE)
endif()
if(EXISTS "${CMAKE_TOOLCHAIN_FILE}")
message(STATUS
"Emscripten ${EMCC_VERSION} toolchain file detected at ${CMAKE_TOOLCHAIN_FILE}")
else()
__qt_internal_show_error_no_emscripten_toolchain_file_found_when_building_qt()
endif()
__qt_internal_get_emcc_recommended_version(recommended_version)
set(QT_EMCC_RECOMMENDED_VERSION "${recommended_version}" CACHE STRING INTERNAL FORCE)
set(QT_AUTODETECT_WASM_IS_DONE TRUE CACHE BOOL "")
else()
message(STATUS
"Reusing cached Emscripten ${EMCC_VERSION} toolchain file detected at "
"${CMAKE_TOOLCHAIN_FILE}")
endif()
endif()
endfunction()
function(qt_auto_detect_cmake_generator)
if(NOT CMAKE_GENERATOR MATCHES "Ninja" AND NOT QT_SILENCE_CMAKE_GENERATOR_WARNING)
message(WARNING
"The officially supported CMake generator for building Qt is Ninja. "
"You are using: '${CMAKE_GENERATOR}' instead. "
"Thus, you might encounter issues. Use at your own risk.")
endif()
endfunction()
function(qt_auto_detect_android)
# We assume an Android build if any of the ANDROID_* cache variables are set.
if(DEFINED ANDROID_SDK_ROOT
OR DEFINED ANDROID_NDK_ROOT
OR DEFINED ANDROID_ABI
OR DEFINED ANDROID_NATIVE_ABI_LEVEL
OR DEFINED ANDROID_STL)
set(android_detected TRUE)
else()
set(android_detected FALSE)
endif()
# Auto-detect NDK root
if(NOT DEFINED ANDROID_NDK_ROOT AND DEFINED ANDROID_SDK_ROOT)
file(GLOB ndk_versions LIST_DIRECTORIES true RELATIVE "${ANDROID_SDK_ROOT}/ndk"
"${ANDROID_SDK_ROOT}/ndk/*")
unset(ndk_root)
if(NOT ndk_versions STREQUAL "")
# Use the NDK with the highest version number.
if(CMAKE_VERSION VERSION_LESS 3.18)
list(SORT ndk_versions)
list(REVERSE ndk_versions)
else()
list(SORT ndk_versions COMPARE NATURAL ORDER DESCENDING)
endif()
list(GET ndk_versions 0 ndk_root)
string(PREPEND ndk_root "${ANDROID_SDK_ROOT}/ndk/")
else()
# Fallback: use the deprecated "ndk-bundle" directory within the SDK root.
set(ndk_root "${ANDROID_SDK_ROOT}/ndk-bundle")
if(NOT IS_DIRECTORY "${ndk_root}")
unset(ndk_root)
endif()
endif()
if(DEFINED ndk_root)
message(STATUS "Android NDK detected: ${ndk_root}")
set(ANDROID_NDK_ROOT "${ndk_root}" CACHE STRING "")
endif()
endif()
# Auto-detect toolchain file
if(NOT DEFINED CMAKE_TOOLCHAIN_FILE AND DEFINED ANDROID_NDK_ROOT)
set(toolchain_file "${ANDROID_NDK_ROOT}/build/cmake/android.toolchain.cmake")
if(EXISTS "${toolchain_file}")
message(STATUS "Android toolchain file within NDK detected: ${toolchain_file}")
set(CMAKE_TOOLCHAIN_FILE "${toolchain_file}" CACHE STRING "")
else()
message(FATAL_ERROR "Cannot find the toolchain file '${toolchain_file}'. "
"Please specify the toolchain file with -DCMAKE_TOOLCHAIN_FILE=<file>.")
endif()
endif()
if(NOT DEFINED CMAKE_TOOLCHAIN_FILE AND android_detected)
message(FATAL_ERROR "An Android build was requested, but no Android toolchain file was "
"specified nor detected.")
endif()
if(DEFINED CMAKE_TOOLCHAIN_FILE AND NOT DEFINED QT_AUTODETECT_ANDROID)
# Peek into the toolchain file and check if it looks like an Android one.
if(NOT android_detected)
file(READ ${CMAKE_TOOLCHAIN_FILE} toolchain_file_content OFFSET 0 LIMIT 80)
string(FIND "${toolchain_file_content}" "The Android Open Source Project"
find_result REVERSE)
if(NOT ${find_result} EQUAL -1)
set(android_detected TRUE)
endif()
endif()
if(android_detected)
message(STATUS "Android build detected, checking configuration defaults...")
# ANDROID_NATIVE_API_LEVEL is an just an alias to ANDROID_PLATFORM, check for both
if(NOT DEFINED ANDROID_PLATFORM AND NOT DEFINED ANDROID_NATIVE_API_LEVEL)
message(STATUS "Neither ANDROID_PLATFORM nor ANDROID_NATIVE_API_LEVEL were specified, using API level 23 as default")
set(ANDROID_PLATFORM "android-23" CACHE STRING "")
set(ANDROID_NATIVE_API_LEVEL 23 CACHE STRING "")
endif()
if(NOT DEFINED ANDROID_STL)
set(ANDROID_STL "c++_shared" CACHE STRING "")
endif()
endif()
set(QT_AUTODETECT_ANDROID ${android_detected} CACHE STRING "")
elseif (QT_AUTODETECT_ANDROID)
message(STATUS "Android build detected")
endif()
endfunction()
function(qt_auto_detect_vcpkg)
if(DEFINED ENV{VCPKG_ROOT})
set(vcpkg_toolchain_file "$ENV{VCPKG_ROOT}/scripts/buildsystems/vcpkg.cmake")
get_filename_component(vcpkg_toolchain_file "${vcpkg_toolchain_file}" ABSOLUTE)
if(DEFINED CMAKE_TOOLCHAIN_FILE)
get_filename_component(supplied_toolchain_file "${CMAKE_TOOLCHAIN_FILE}" ABSOLUTE)
if(NOT supplied_toolchain_file STREQUAL vcpkg_toolchain_file)
set(VCPKG_CHAINLOAD_TOOLCHAIN_FILE "${CMAKE_TOOLCHAIN_FILE}" CACHE STRING "")
endif()
unset(supplied_toolchain_file)
endif()
set(CMAKE_TOOLCHAIN_FILE "${vcpkg_toolchain_file}" CACHE STRING "" FORCE)
message(STATUS "Using vcpkg from $ENV{VCPKG_ROOT}")
if(DEFINED ENV{VCPKG_DEFAULT_TRIPLET} AND NOT DEFINED VCPKG_TARGET_TRIPLET)
set(VCPKG_TARGET_TRIPLET "$ENV{VCPKG_DEFAULT_TRIPLET}" CACHE STRING "")
message(STATUS "Using vcpkg triplet ${VCPKG_TARGET_TRIPLET}")
endif()
unset(vcpkg_toolchain_file)
Make standalone tests build via top level repo project Previously repo/tests/CMakeLists.txt was a standalone project on which CMake could be called. This was useful for Coin to be able to build and package only tests, but was a bit troublesome because that means having to specify the usual boilerplate like minimum CMake version, which packages to find in every tests.pro project. Instead of having a separate standalone project, modify the top level project and associated CMake code to allow passing a special QT_BUILD_STANDALONE_TESTS variable, which causes the top level project to build only tests, and find Qt in the previously installed qt location. This also means that when building a repo, we generate a ${repo_name}TestsConfig.cmake file which does find_package on all the modules that have been built as part of that repo. So that when standalone tests bare built for that repo, the modules are automatically found. qt_set_up_standalone_tests_build() is modified to be a no-op because it is not needed anymore. Its usage should be removed from all the other repos, and then removed from qtbase. Non-adjusted tests/CMakeLists.txt projects in other repositories should still be buildable with the current code, until they are updated to the new format. Adjust the Coin build instructions to build the standalone tests in a separate directory. Adjust pro2cmake to generate new structure for the tests/tests.pro projects. Adjust the qtbase tests project. Fixes: QTBUG-79239 Change-Id: Ib4b66bc772d8876cdcbae1e90ce5a5a5234fa675 Reviewed-by: Qt CMake Build Bot Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
2019-11-01 10:48:23 +00:00
message(STATUS "CMAKE_TOOLCHAIN_FILE is: ${CMAKE_TOOLCHAIN_FILE}")
if(DEFINED VCPKG_CHAINLOAD_TOOLCHAIN_FILE)
message(STATUS "VCPKG_CHAINLOAD_TOOLCHAIN_FILE is: ${VCPKG_CHAINLOAD_TOOLCHAIN_FILE}")
endif()
endif()
endfunction()
function(qt_auto_detect_ios)
if(CMAKE_SYSTEM_NAME STREQUAL iOS)
message(STATUS "Using internal CMake ${CMAKE_SYSTEM_NAME} toolchain file.")
# The QT_UIKIT_SDK check simulates the input.sdk condition for simulator_and_device in
# configure.json.
# If the variable is explicitly provided, assume simulator_and_device to be off.
if(QT_UIKIT_SDK)
set(simulator_and_device OFF)
else()
# Default to simulator_and_device when an explicit sdk is not requested.
# Requires CMake 3.17.0+.
set(simulator_and_device ON)
endif()
message(STATUS "simulator_and_device set to: \"${simulator_and_device}\".")
# Choose relevant architectures.
# Using a non Xcode generator requires explicit setting of the
# architectures, otherwise compilation fails with unknown defines.
if(simulator_and_device)
set(osx_architectures "arm64;x86_64")
elseif(QT_UIKIT_SDK STREQUAL "iphoneos")
set(osx_architectures "arm64")
elseif(QT_UIKIT_SDK STREQUAL "iphonesimulator")
set(osx_architectures "x86_64")
else()
if(NOT DEFINED QT_UIKIT_SDK)
message(FATAL_ERROR "Please provide a value for -DQT_UIKIT_SDK."
" Possible values: iphoneos, iphonesimulator.")
else()
message(FATAL_ERROR
"Unknown SDK argument given to QT_UIKIT_SDK: ${QT_UIKIT_SDK}.")
endif()
endif()
# For non simulator_and_device builds, we need to explicitly set the SYSROOT aka the sdk
# value.
if(QT_UIKIT_SDK)
set(CMAKE_OSX_SYSROOT "${QT_UIKIT_SDK}" CACHE STRING "")
endif()
set(CMAKE_OSX_ARCHITECTURES "${osx_architectures}" CACHE STRING "")
qt_internal_ensure_static_qt_config()
CMake: Handle automatic rpath embedding correctly Instead of using CMAKE_INSTALL_RPATH to embed an absolute path to prefix/libdir into all targets, use the more sophisticated aproach that qmake does. For certain targets (modules, plugins, tools) use relative rpaths. Otherwise embed absolute paths (examples, regular binaries). Installed tests currently have no rpaths. On certain platforms rpaths are not used (Windows, Android, iOS / uikit). Frameworks, app bundles and shallow bundles should also be handled correctly. Additional rpaths can be provided via QT_EXTRA_RPATHS variable (similar to the -R option that configure takes). Automatic embedding can be disabled either via QT_FEATURE_rpath=OFF or QT_DISABLE_RPATH=ON. Note that installed examples are not relocatable at the moment (due to always having an absolute path rpath), so this is a missing feature compared to qmake. This is due to missing information on where examples will be installed, so a relative rpath can not be computed. By default a Qt installation is relocatable, so there is no need to pass -DQT_EXTRA_RPATHS=. like Coin used to do with qmake e.g. -R . Relative rpaths will have the appropriate 'relative base' prefixed to them (e.g $ORIGIN on linux and @loader_path on darwin platforms). There is currently no support for other platforms that might have a different 'relative base' than the ones mentioned above. Any extra rpaths are saved to BuildInternalsExtra which are re-used when building other repositories. configurejson2cmake modified to include correct conditions for the rpath feature. It's very likely that we will need a new qt_add_internal_app() function for gui apps that are to be installed to prefix/bin. For example for Assistant from qttools. Currently such apps use qt_add_executable(). The distinction is necessary to make sure that relative rpaths are embedded into apps, but not executables (which tests are part of). Amends e835a6853b9c0fb7af32798ed8965de3adf0e15b Task-number: QTBUG-83497 Change-Id: I3510f63c0a59489741116cc8ec3ef6a0a7704f25 Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2020-04-15 16:48:26 +00:00
# Disable qt rpaths for iOS, just like mkspecs/common/uikit.conf does, due to those
# bundles not being able to use paths outside the app bundle. Not sure this is strictly
# needed though.
set(QT_DISABLE_RPATH "OFF" CACHE BOOL "Disable automatic Qt rpath handling." FORCE)
endif()
endfunction()
Add initial support for CMake "Ninja Multi-Config" generator This allows doing debug_and_release builds with Ninja on all platforms. The "Ninja Multi-Config generator" is available starting with CMake 3.17. Desired configurations can be set via CMAKE_CONFIGURATION_TYPES. Possible values: "Release, Debug, RelWithDebInfo, MinRelSize". For example -DCMAKE_CONFIGURATION_TYPES="Release;Debug". The first configuration is the 'default' configuration which is built when calling ninja with no arguments. To build all targets of a certain configuration use "ninja all:Release" or "ninja all:Debug". To build all targets in all configurations use "ninja all:all". Note that the first configuration influences which configuration of tools will be used when building the libraries for all configurations. In simple terms, when configured with -DCMAKE_CONFIGURATION_TYPES="Release;Debug" the release version of moc is used by AUTOMOC. When configured with -DCMAKE_CONFIGURATION_TYPES="Debug;Release" the debug version of moc is used by AUTOMOC. Framework builds and Ninja Multi-Config don't currently work together due to multiple bugs in CMake, which ends up generating an invalid ninja file with duplicate rules. There are also issues with placement of the debug artifacts. This will be handled in a follow up patch after CMake is fixed. Task-number: QTBUG-76899 Change-Id: If224adc0b71b7d1d6606738101536146aa866cd7 Reviewed-by: Qt CMake Build Bot Reviewed-by: Leander Beernaert <leander.beernaert@qt.io> Reviewed-by: Cristian Adam <cristian.adam@qt.io>
2019-12-06 14:12:17 +00:00
function(qt_auto_detect_cmake_config)
if(CMAKE_CONFIGURATION_TYPES)
# Allow users to specify this option.
if(NOT QT_MULTI_CONFIG_FIRST_CONFIG)
list(GET CMAKE_CONFIGURATION_TYPES 0 first_config_type)
set(QT_MULTI_CONFIG_FIRST_CONFIG "${first_config_type}")
set(QT_MULTI_CONFIG_FIRST_CONFIG "${first_config_type}" PARENT_SCOPE)
endif()
set(CMAKE_TRY_COMPILE_CONFIGURATION "${QT_MULTI_CONFIG_FIRST_CONFIG}" PARENT_SCOPE)
if(CMAKE_GENERATOR STREQUAL "Ninja Multi-Config")
# Create build-<config>.ninja files for all specified configurations.
set(CMAKE_CROSS_CONFIGS "all" CACHE STRING "")
# The configuration that will be considered the main one (for example when
# configuring standalone tests with a single-config generator like Ninja).
set(CMAKE_DEFAULT_BUILD_TYPE "${QT_MULTI_CONFIG_FIRST_CONFIG}" CACHE STRING "")
# By default when ninja is called without parameters, it will build all configurations.
set(CMAKE_DEFAULT_CONFIGS "all" CACHE STRING "")
Add initial support for CMake "Ninja Multi-Config" generator This allows doing debug_and_release builds with Ninja on all platforms. The "Ninja Multi-Config generator" is available starting with CMake 3.17. Desired configurations can be set via CMAKE_CONFIGURATION_TYPES. Possible values: "Release, Debug, RelWithDebInfo, MinRelSize". For example -DCMAKE_CONFIGURATION_TYPES="Release;Debug". The first configuration is the 'default' configuration which is built when calling ninja with no arguments. To build all targets of a certain configuration use "ninja all:Release" or "ninja all:Debug". To build all targets in all configurations use "ninja all:all". Note that the first configuration influences which configuration of tools will be used when building the libraries for all configurations. In simple terms, when configured with -DCMAKE_CONFIGURATION_TYPES="Release;Debug" the release version of moc is used by AUTOMOC. When configured with -DCMAKE_CONFIGURATION_TYPES="Debug;Release" the debug version of moc is used by AUTOMOC. Framework builds and Ninja Multi-Config don't currently work together due to multiple bugs in CMake, which ends up generating an invalid ninja file with duplicate rules. There are also issues with placement of the debug artifacts. This will be handled in a follow up patch after CMake is fixed. Task-number: QTBUG-76899 Change-Id: If224adc0b71b7d1d6606738101536146aa866cd7 Reviewed-by: Qt CMake Build Bot Reviewed-by: Leander Beernaert <leander.beernaert@qt.io> Reviewed-by: Cristian Adam <cristian.adam@qt.io>
2019-12-06 14:12:17 +00:00
endif()
endif()
endfunction()
function(qt_auto_detect_cyclic_toolchain)
if(CMAKE_TOOLCHAIN_FILE AND CMAKE_TOOLCHAIN_FILE MATCHES "/qt.toolchain.cmake$")
message(FATAL_ERROR
"Woah there! You can't use the Qt generated qt.toolchain.cmake file to configure "
"qtbase, because that will create a toolchain file that includes itself!\n"
"Did you accidentally use qt-cmake to configure qtbase? Make sure to remove the "
"CMakeCache.txt file, and configure qtbase with 'cmake' instead of 'qt-cmake'.")
endif()
endfunction()
function(qt_internal_get_darwin_sdk_version out_var)
if(APPLE)
if(CMAKE_SYSTEM_NAME STREQUAL iOS)
set(sdk_name "iphoneos")
else()
# Default to macOS
set(sdk_name "macosx")
endif()
set(xcrun_version_arg "--show-sdk-version")
execute_process(COMMAND /usr/bin/xcrun --sdk ${sdk_name} ${xcrun_version_arg}
OUTPUT_VARIABLE sdk_version
ERROR_VARIABLE xcrun_error)
if(NOT sdk_version)
message(FATAL_ERROR
"Can't determine darwin ${sdk_name} SDK version. Error: ${xcrun_error}")
endif()
string(STRIP "${sdk_version}" sdk_version)
set(${out_var} "${sdk_version}" PARENT_SCOPE)
endif()
endfunction()
function(qt_internal_get_xcode_version out_var)
if(APPLE)
execute_process(COMMAND /usr/bin/xcrun xcodebuild -version
OUTPUT_VARIABLE xcode_version
ERROR_VARIABLE xcrun_error)
string(REPLACE "\n" " " xcode_version "${xcode_version}")
string(STRIP "${xcode_version}" xcode_version)
set(${out_var} "${xcode_version}" PARENT_SCOPE)
endif()
endfunction()
function(qt_auto_detect_darwin)
if(APPLE)
# If no CMAKE_OSX_DEPLOYMENT_TARGET is provided, default to a value that Qt defines.
# This replicates the behavior in mkspecs/common/macx.conf where
# QMAKE_MACOSX_DEPLOYMENT_TARGET is set.
set(description
"Minimum OS X version to target for deployment (at runtime); newer APIs weak linked. Set to empty string for default value.")
if(NOT CMAKE_OSX_DEPLOYMENT_TARGET)
if(NOT CMAKE_SYSTEM_NAME)
# macOS
set(version "11.0")
elseif(CMAKE_SYSTEM_NAME STREQUAL iOS)
set(version "14.0")
endif()
if(version)
set(CMAKE_OSX_DEPLOYMENT_TARGET "${version}" CACHE STRING "${description}")
endif()
endif()
qt_internal_get_darwin_sdk_version(darwin_sdk_version)
set(QT_MAC_SDK_VERSION "${darwin_sdk_version}" CACHE STRING "Darwin SDK version.")
qt_internal_get_xcode_version(xcode_version)
set(QT_MAC_XCODE_VERSION "${xcode_version}" CACHE STRING "Xcode version.")
CMake: Fix building multi-arch universal macOS Qt Use the same approach we use for iOS, which is to set multiple CMAKE_OSX_ARCHITECTURES values and let the clang front end deal with lipo-ing the final libraries. For now, Qt can be configured to build universal macOS libraries by passing 2 architectures to CMake, either via: -DCMAKE_OSX_ARCHITECTURES="x86_64;arm64" or -DCMAKE_OSX_ARCHITECTURES="arm64;x86_64" Currently we recommend specifying the intel x86_64 arch as the first one, to get an intel slice configuration that is comparable to a non-universal intel build. Specifying the arm64 slice first could pessimize optimizations and reduce the feature set for the intel slice due to the limitation that we run configure tests only once. The first specified architecture is the one used to do all the configure tests. It 'mostly' defines the common feature set of both architecture slices, with the excepion of some special handling for sse2 and neon instructions. In the future we might want to run at least the Qt architecture config test for all specified architectures, so that we can extract all the supported sub-arches and instruction sets in a reliable way. For now, we use the same sse2 hack as for iOS simulator_and_device builds, otherwise QtGui fails to link due to missing qt_memfill32_sse2 and other symbols. The hack is somewhat augmented to ensure that reconfiguration still succeeds (same issue happened with iOS). Previously the sse2 feature condition was broken due to force setting the feature to be ON. Now the condition also checks for a special QT_FORCE_FEATURE_sse2 variable which we set internally. Note that we shouldn't build for arm64e, because the binaries get killed when running on AS with the following message: kernel: exec_mach_imgact: not running binary built against preview arm64e ABI. Aslo, by default, we disable the arm64 slice for qt sql plugins, mostly because the CI provisioned sql libraries that we depend on only contain x86_64 slices, and trying to build the sql plugins for both slices will fail with linker errors. This behavior can be disabled for all targets marked by qt_internal_force_macos_intel_arch, by setting the QT_FORCE_MACOS_ALL_ARCHES CMake option to ON. To disble it per-target one can set QT_FORCE_MACOS_ALL_ARCHES_${target} to ON. Task-number: QTBUG-85447 Change-Id: Iccb5dfcc1a21a8a8292bd3817df0ea46c3445f75 Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
2021-03-24 15:03:35 +00:00
list(LENGTH CMAKE_OSX_ARCHITECTURES arch_count)
if(NOT CMAKE_SYSTEM_NAME STREQUAL iOS AND arch_count GREATER 0)
CMake: Fix building multi-arch universal macOS Qt Use the same approach we use for iOS, which is to set multiple CMAKE_OSX_ARCHITECTURES values and let the clang front end deal with lipo-ing the final libraries. For now, Qt can be configured to build universal macOS libraries by passing 2 architectures to CMake, either via: -DCMAKE_OSX_ARCHITECTURES="x86_64;arm64" or -DCMAKE_OSX_ARCHITECTURES="arm64;x86_64" Currently we recommend specifying the intel x86_64 arch as the first one, to get an intel slice configuration that is comparable to a non-universal intel build. Specifying the arm64 slice first could pessimize optimizations and reduce the feature set for the intel slice due to the limitation that we run configure tests only once. The first specified architecture is the one used to do all the configure tests. It 'mostly' defines the common feature set of both architecture slices, with the excepion of some special handling for sse2 and neon instructions. In the future we might want to run at least the Qt architecture config test for all specified architectures, so that we can extract all the supported sub-arches and instruction sets in a reliable way. For now, we use the same sse2 hack as for iOS simulator_and_device builds, otherwise QtGui fails to link due to missing qt_memfill32_sse2 and other symbols. The hack is somewhat augmented to ensure that reconfiguration still succeeds (same issue happened with iOS). Previously the sse2 feature condition was broken due to force setting the feature to be ON. Now the condition also checks for a special QT_FORCE_FEATURE_sse2 variable which we set internally. Note that we shouldn't build for arm64e, because the binaries get killed when running on AS with the following message: kernel: exec_mach_imgact: not running binary built against preview arm64e ABI. Aslo, by default, we disable the arm64 slice for qt sql plugins, mostly because the CI provisioned sql libraries that we depend on only contain x86_64 slices, and trying to build the sql plugins for both slices will fail with linker errors. This behavior can be disabled for all targets marked by qt_internal_force_macos_intel_arch, by setting the QT_FORCE_MACOS_ALL_ARCHES CMake option to ON. To disble it per-target one can set QT_FORCE_MACOS_ALL_ARCHES_${target} to ON. Task-number: QTBUG-85447 Change-Id: Iccb5dfcc1a21a8a8292bd3817df0ea46c3445f75 Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
2021-03-24 15:03:35 +00:00
foreach(arch ${CMAKE_OSX_ARCHITECTURES})
if(arch STREQUAL "arm64e")
message(WARNING "Applications built against an arm64e Qt architecture will "
"likely fail to run on Apple Silicon. Consider targeting "
"'arm64' instead.")
endif()
endforeach()
endif()
endif()
endfunction()
function(qt_auto_detect_macos_universal)
if(APPLE AND NOT CMAKE_SYSTEM_NAME STREQUAL iOS)
CMake: Fix building multi-arch universal macOS Qt Use the same approach we use for iOS, which is to set multiple CMAKE_OSX_ARCHITECTURES values and let the clang front end deal with lipo-ing the final libraries. For now, Qt can be configured to build universal macOS libraries by passing 2 architectures to CMake, either via: -DCMAKE_OSX_ARCHITECTURES="x86_64;arm64" or -DCMAKE_OSX_ARCHITECTURES="arm64;x86_64" Currently we recommend specifying the intel x86_64 arch as the first one, to get an intel slice configuration that is comparable to a non-universal intel build. Specifying the arm64 slice first could pessimize optimizations and reduce the feature set for the intel slice due to the limitation that we run configure tests only once. The first specified architecture is the one used to do all the configure tests. It 'mostly' defines the common feature set of both architecture slices, with the excepion of some special handling for sse2 and neon instructions. In the future we might want to run at least the Qt architecture config test for all specified architectures, so that we can extract all the supported sub-arches and instruction sets in a reliable way. For now, we use the same sse2 hack as for iOS simulator_and_device builds, otherwise QtGui fails to link due to missing qt_memfill32_sse2 and other symbols. The hack is somewhat augmented to ensure that reconfiguration still succeeds (same issue happened with iOS). Previously the sse2 feature condition was broken due to force setting the feature to be ON. Now the condition also checks for a special QT_FORCE_FEATURE_sse2 variable which we set internally. Note that we shouldn't build for arm64e, because the binaries get killed when running on AS with the following message: kernel: exec_mach_imgact: not running binary built against preview arm64e ABI. Aslo, by default, we disable the arm64 slice for qt sql plugins, mostly because the CI provisioned sql libraries that we depend on only contain x86_64 slices, and trying to build the sql plugins for both slices will fail with linker errors. This behavior can be disabled for all targets marked by qt_internal_force_macos_intel_arch, by setting the QT_FORCE_MACOS_ALL_ARCHES CMake option to ON. To disble it per-target one can set QT_FORCE_MACOS_ALL_ARCHES_${target} to ON. Task-number: QTBUG-85447 Change-Id: Iccb5dfcc1a21a8a8292bd3817df0ea46c3445f75 Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
2021-03-24 15:03:35 +00:00
list(LENGTH CMAKE_OSX_ARCHITECTURES arch_count)
set(is_universal "OFF")
if(arch_count GREATER 1)
set(is_universal "ON")
endif()
set(QT_IS_MACOS_UNIVERSAL "${is_universal}" CACHE INTERNAL "Build universal Qt for macOS")
endif()
endfunction()
function(qt_auto_detect_pch)
set(default_value "ON")
if(CMAKE_OSX_ARCHITECTURES AND CMAKE_VERSION VERSION_LESS 3.18.0 AND NOT QT_FORCE_PCH)
list(LENGTH CMAKE_OSX_ARCHITECTURES arch_count)
# CMake versions lower than 3.18 don't support PCH when multiple architectures are set.
# This is the case for simulator_and_device builds.
if(arch_count GREATER 1)
set(default_value "OFF")
message(WARNING "PCH support disabled due to usage of multiple architectures.")
endif()
endif()
option(BUILD_WITH_PCH "Build Qt using precompiled headers?" "${default_value}")
endfunction()
function(qt_auto_detect_win32_arm)
if("${QT_QMAKE_TARGET_MKSPEC}" STREQUAL "win32-arm64-msvc")
set(CMAKE_SYSTEM_NAME "Windows" CACHE STRING "")
set(CMAKE_SYSTEM_VERSION "10" CACHE STRING "")
set(CMAKE_SYSTEM_PROCESSOR "arm64" CACHE STRING "")
endif()
endfunction()
function(qt_auto_detect_linux_x86)
if("${QT_QMAKE_TARGET_MKSPEC}" STREQUAL "linux-g++-32" AND NOT QT_NO_AUTO_DETECT_LINUX_X86)
# Add flag to ensure code is compiled for 32bit x86 ABI aka i386 or its flavors.
set(__qt_toolchain_common_flags_init "-m32")
if(NOT QT_NO_OVERRIDE_LANG_FLAGS_INIT)
set(CMAKE_C_FLAGS_INIT "${__qt_toolchain_common_flags_init}" PARENT_SCOPE)
set(CMAKE_CXX_FLAGS_INIT "${__qt_toolchain_common_flags_init}" PARENT_SCOPE)
set(CMAKE_ASM_FLAGS_INIT "${__qt_toolchain_common_flags_init}" PARENT_SCOPE)
endif()
# Each distro places arch-specific libraries according to its own file system layout.
#
# https://wiki.debian.org/Multiarch/TheCaseForMultiarch
# https://wiki.ubuntu.com/MultiarchSpec
# https://wiki.gentoo.org/wiki/Project:AMD64/Multilib_layout
# https://wiki.archlinux.org/title/official_repositories#multilib
# https://documentation.suse.com/sles/15-SP3/html/SLES-all/cha-64bit.html
# https://pilotlogic.com/sitejoom/index.php/wiki?id=398
# https://unix.stackexchange.com/questions/458069/multilib-and-multiarch
#
# CMake can usually find 32 bit libraries just fine on its own.
# find_library will use prefixes from CMAKE_PREFIX_PATH / CMAKE_SYSTEM_PREFIX_PATH
# and add arch-specific lib folders like 'lib/i386-linux-gnu' on debian based systems
# or lib32/lib64 on other distros.
# The problem is that if no 32 bit library is found, a 64 bit one might get picked up.
# That's why we need to specify additional ignore paths.
#
# The paths used in the code below are Ubuntu specific.
# You can opt out of using them if you are using a different distro, but then you need to
# specify appropriate paths yourself in your own CMake toolchain file.
#
# Note that to absolutely ensure no x86_64 library is picked up on a multiarch /
# multilib-enabled system, you might need to specify extra directories in
# CMAKE_INGORE_PATH for each sub-directory containing a library.
#
# For example to exclude /usr/lib/x86_64-linux-gnu/mit-krb5/libgssapi_krb5.so
# you need to add /usr/lib/x86_64-linux-gnu/mit-krb5 explicitly to CMAKE_IGNORE_PATH.
# Adding just /usr/lib/x86_64-linux-gnu to either CMAKE_IGNORE_PATH or
# CMAKE_IGNORE_PREFIX_PATH is not enough.
#
# Another consideration are results returned by CMake's pkg_check_modules which uses
# pkg-config.
# CMAKE_IGNORE_PATH is not read by pkg_check_modules, but CMAKE_PREFIX_PATH
# values are passed as additional prefixes to look for .pc files, IN ADDITION to the default
# prefixes searched by pkg-config of each specific distro.
# For example on Ubuntu, the default searched paths on an x86_64 host are:
# /usr/local/lib/x86_64-linux-gnu/pkgconfig
# /usr/local/lib/pkgconfig
# /usr/local/share/pkgconfig
# /usr/lib/x86_64-linux-gnu/pkgconfig
# /usr/lib/pkgconfig
# /usr/share/pkgconfig
# To ensure the x86_64 packages are not picked up, the PKG_CONFIG_LIBDIR environment
# variable can be overridden with an explicit list of prefixes.
# Again, the paths below are Ubuntu specific.
if(NOT QT_NO_OVERRIDE_CMAKE_IGNORE_PATH)
set(linux_x86_ignore_path "/usr/lib/x86_64-linux-gnu;/lib/x86_64-linux-gnu")
set(CMAKE_IGNORE_PATH "${linux_x86_ignore_path}" PARENT_SCOPE)
set_property(GLOBAL PROPERTY
_qt_internal_linux_x86_ignore_path "${linux_x86_ignore_path}")
endif()
if(NOT QT_NO_OVERRIDE_PKG_CONFIG_LIBDIR)
set(pc_config_libdir "")
list(APPEND pc_config_libdir "/usr/local/lib/i386-linux-gnu/pkgconfig")
list(APPEND pc_config_libdir "/usr/local/lib/pkgconfig")
list(APPEND pc_config_libdir "/usr/local/share/pkgconfig")
list(APPEND pc_config_libdir "/usr/lib/i386-linux-gnu/pkgconfig")
list(APPEND pc_config_libdir "/usr/lib/pkgconfig")
list(APPEND pc_config_libdir "/usr/share/pkgconfig")
list(JOIN pc_config_libdir ":" pc_config_libdir)
set_property(GLOBAL PROPERTY
_qt_internal_linux_x86_pc_config_libdir "${pc_config_libdir}")
# Overrides the default prefix list.
set(ENV{PKG_CONFIG_LIBDIR} "${pc_config_libdir}")
# Overrides the additional prefixes list.
set(ENV{PKG_CONFIG_DIR} "")
endif()
endif()
endfunction()
function(qt_auto_detect_integrity)
if(
# Qt's custom CMake toolchain file sets this value.
CMAKE_SYSTEM_NAME STREQUAL "Integrity" OR
# Upstream CMake expects this name, but we don't currently use it in Qt.
CMAKE_SYSTEM_NAME STREQUAL "GHS-MULTI"
)
qt_internal_ensure_static_qt_config()
endif()
endfunction()
# Let CMake load our custom platform modules.
# CMake-provided platform modules take precedence.
if(NOT QT_AVOID_CUSTOM_PLATFORM_MODULES)
list(PREPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/platforms")
endif()
qt_auto_detect_cmake_generator()
qt_auto_detect_cyclic_toolchain()
Add initial support for CMake "Ninja Multi-Config" generator This allows doing debug_and_release builds with Ninja on all platforms. The "Ninja Multi-Config generator" is available starting with CMake 3.17. Desired configurations can be set via CMAKE_CONFIGURATION_TYPES. Possible values: "Release, Debug, RelWithDebInfo, MinRelSize". For example -DCMAKE_CONFIGURATION_TYPES="Release;Debug". The first configuration is the 'default' configuration which is built when calling ninja with no arguments. To build all targets of a certain configuration use "ninja all:Release" or "ninja all:Debug". To build all targets in all configurations use "ninja all:all". Note that the first configuration influences which configuration of tools will be used when building the libraries for all configurations. In simple terms, when configured with -DCMAKE_CONFIGURATION_TYPES="Release;Debug" the release version of moc is used by AUTOMOC. When configured with -DCMAKE_CONFIGURATION_TYPES="Debug;Release" the debug version of moc is used by AUTOMOC. Framework builds and Ninja Multi-Config don't currently work together due to multiple bugs in CMake, which ends up generating an invalid ninja file with duplicate rules. There are also issues with placement of the debug artifacts. This will be handled in a follow up patch after CMake is fixed. Task-number: QTBUG-76899 Change-Id: If224adc0b71b7d1d6606738101536146aa866cd7 Reviewed-by: Qt CMake Build Bot Reviewed-by: Leander Beernaert <leander.beernaert@qt.io> Reviewed-by: Cristian Adam <cristian.adam@qt.io>
2019-12-06 14:12:17 +00:00
qt_auto_detect_cmake_config()
qt_auto_detect_darwin()
CMake: Fix building multi-arch universal macOS Qt Use the same approach we use for iOS, which is to set multiple CMAKE_OSX_ARCHITECTURES values and let the clang front end deal with lipo-ing the final libraries. For now, Qt can be configured to build universal macOS libraries by passing 2 architectures to CMake, either via: -DCMAKE_OSX_ARCHITECTURES="x86_64;arm64" or -DCMAKE_OSX_ARCHITECTURES="arm64;x86_64" Currently we recommend specifying the intel x86_64 arch as the first one, to get an intel slice configuration that is comparable to a non-universal intel build. Specifying the arm64 slice first could pessimize optimizations and reduce the feature set for the intel slice due to the limitation that we run configure tests only once. The first specified architecture is the one used to do all the configure tests. It 'mostly' defines the common feature set of both architecture slices, with the excepion of some special handling for sse2 and neon instructions. In the future we might want to run at least the Qt architecture config test for all specified architectures, so that we can extract all the supported sub-arches and instruction sets in a reliable way. For now, we use the same sse2 hack as for iOS simulator_and_device builds, otherwise QtGui fails to link due to missing qt_memfill32_sse2 and other symbols. The hack is somewhat augmented to ensure that reconfiguration still succeeds (same issue happened with iOS). Previously the sse2 feature condition was broken due to force setting the feature to be ON. Now the condition also checks for a special QT_FORCE_FEATURE_sse2 variable which we set internally. Note that we shouldn't build for arm64e, because the binaries get killed when running on AS with the following message: kernel: exec_mach_imgact: not running binary built against preview arm64e ABI. Aslo, by default, we disable the arm64 slice for qt sql plugins, mostly because the CI provisioned sql libraries that we depend on only contain x86_64 slices, and trying to build the sql plugins for both slices will fail with linker errors. This behavior can be disabled for all targets marked by qt_internal_force_macos_intel_arch, by setting the QT_FORCE_MACOS_ALL_ARCHES CMake option to ON. To disble it per-target one can set QT_FORCE_MACOS_ALL_ARCHES_${target} to ON. Task-number: QTBUG-85447 Change-Id: Iccb5dfcc1a21a8a8292bd3817df0ea46c3445f75 Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
2021-03-24 15:03:35 +00:00
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()
qt_auto_detect_linux_x86()
qt_auto_detect_integrity()