qt5base-lts/cmake/QtBaseGlobalTargets.cmake
Alexandru Croitor 72aab8b487 CMake: Bump the minimum required CMake version to build Qt to 3.18
Add a new function that returns the minimum CMake version required to
build Qt. Pass that value to cmake_minimum_required() when building
qtbase and its standalone tests.

The minimum supported CMake version is read from qtbase/.cmake.conf
and its value should be updated when the need arises. It's the main
source of truth for all repos.

Provide a way to lower the minimum CMake version at configure time by
passing a value via QT_FORCE_MIN_CMAKE_VERSION.
This is not an officially supported way of building Qt. If the
specified version is lower than Qt's supported minimum, show a
warning.

Nevertheless the option is useful for testing how Qt builds with a
different minimum CMake version due to different policies being
enabled by default.

Issue warnings for CMake versions that are higher than the minimum
version but are known to cause issues when building Qt.

A counterpart change is needed in qt5 to ensure the minimum CMake
version is set at the proper time for top-level builds.

Ideally we would use the same 'check the CMake minimum version` code
in all our repositories, but that will cause lots of duplication because
we can't really find_package() the code and doing something like
include(../qtbase/foo.cmake) hardcodes assumptions about repo
locations.

So for now we don't bump the minimum version in child repo
cmake_minimum_required calls (qtsvg, qtdeclarative, etc).
Instead we record both the minimum supported version and the computed
minimum version (in case a different version was forced) in
QtBuildInternalsExtra.cmake.
Then we require qtbase's computed min version in
qt_build_repo_begin().

This won't set policies as cmake_minimum_required would, but at least
it propagates what minimum CMake version should be used for child
repos.

We might still have to bump the versions in child repos at some point.

Task-number: QTBUG-88086
Change-Id: Ida1c0d5d3e0fbb15d2aee9b68abab7a1648774b9
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Cristian Adam <cristian.adam@qt.io>
2020-11-03 13:06:14 +01:00

244 lines
10 KiB
CMake

set(__GlobalConfig_path_suffix "${INSTALL_CMAKE_NAMESPACE}")
qt_path_join(__GlobalConfig_build_dir ${QT_CONFIG_BUILD_DIR} ${__GlobalConfig_path_suffix})
qt_path_join(__GlobalConfig_install_dir ${QT_CONFIG_INSTALL_DIR} ${__GlobalConfig_path_suffix})
set(__GlobalConfig_install_dir_absolute "${__GlobalConfig_install_dir}")
set(__qt_bin_dir_absolute "${QT_INSTALL_DIR}/${INSTALL_BINDIR}")
if(QT_WILL_INSTALL)
# Need to prepend the install prefix when doing prefix builds, because the config install dir
# is relative then.
qt_path_join(__GlobalConfig_install_dir_absolute
${QT_BUILD_INTERNALS_RELOCATABLE_INSTALL_PREFIX}
${__GlobalConfig_install_dir_absolute})
qt_path_join(__qt_bin_dir_absolute
${QT_BUILD_INTERNALS_RELOCATABLE_INSTALL_PREFIX} ${__qt_bin_dir_absolute})
endif()
# Compute relative path from $qt_prefix/bin dir to global CMake config install dir, to use in the
# unix-y qt-cmake shell script, to make it work even if the installed Qt is relocated.
file(RELATIVE_PATH
__GlobalConfig_relative_path_from_bin_dir_to_cmake_config_dir
${__qt_bin_dir_absolute} ${__GlobalConfig_install_dir_absolute})
# Generate and install Qt6 config file.
configure_package_config_file(
"${PROJECT_SOURCE_DIR}/cmake/QtConfig.cmake.in"
"${__GlobalConfig_build_dir}/${INSTALL_CMAKE_NAMESPACE}Config.cmake"
INSTALL_DESTINATION "${__GlobalConfig_install_dir}"
)
write_basic_package_version_file(
${__GlobalConfig_build_dir}/${INSTALL_CMAKE_NAMESPACE}ConfigVersion.cmake
VERSION ${PROJECT_VERSION}
COMPATIBILITY AnyNewerVersion
)
qt_install(FILES
"${__GlobalConfig_build_dir}/${INSTALL_CMAKE_NAMESPACE}Config.cmake"
"${__GlobalConfig_build_dir}/${INSTALL_CMAKE_NAMESPACE}ConfigVersion.cmake"
DESTINATION "${__GlobalConfig_install_dir}"
COMPONENT Devel
)
# Configure and install the QtBuildInternals package.
set(__build_internals_path_suffix "${INSTALL_CMAKE_NAMESPACE}BuildInternals")
qt_path_join(__build_internals_build_dir ${QT_CONFIG_BUILD_DIR} ${__build_internals_path_suffix})
qt_path_join(__build_internals_install_dir ${QT_CONFIG_INSTALL_DIR}
${__build_internals_path_suffix})
set(__build_internals_standalone_test_template_dir "QtStandaloneTestTemplateProject")
configure_file(
"${CMAKE_CURRENT_SOURCE_DIR}/cmake/QtBuildInternals/QtBuildInternalsConfig.cmake"
"${__build_internals_build_dir}/${INSTALL_CMAKE_NAMESPACE}BuildInternalsConfig.cmake"
@ONLY
)
qt_install(FILES
"${__build_internals_build_dir}/${INSTALL_CMAKE_NAMESPACE}BuildInternalsConfig.cmake"
"${__build_internals_build_dir}/QtBuildInternalsExtra.cmake"
DESTINATION "${__build_internals_install_dir}"
COMPONENT Devel
)
qt_copy_or_install(
FILES
"${CMAKE_CURRENT_SOURCE_DIR}/cmake/QtBuildInternals/QtBuildInternalsAndroid.cmake"
DESTINATION "${__build_internals_install_dir}")
qt_copy_or_install(
DIRECTORY
"${CMAKE_CURRENT_SOURCE_DIR}/cmake/QtBuildInternals/${__build_internals_standalone_test_template_dir}"
DESTINATION "${__build_internals_install_dir}")
set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS
"${CMAKE_CURRENT_SOURCE_DIR}/cmake/QtBuildInternals/${__build_internals_standalone_test_template_dir}/CMakeLists.txt")
include(QtToolchainHelpers)
qt_internal_create_toolchain_file()
include(QtWrapperScriptHelpers)
qt_internal_create_wrapper_scripts()
## Library to hold global features:
## These features are stored and accessed via Qt::GlobalConfig, but the
## files always lived in Qt::Core, so we keep it that way
add_library(GlobalConfig INTERFACE)
target_include_directories(GlobalConfig INTERFACE
$<BUILD_INTERFACE:${PROJECT_BINARY_DIR}/include>
$<BUILD_INTERFACE:${PROJECT_BINARY_DIR}/include/QtCore>
$<INSTALL_INTERFACE:${INSTALL_INCLUDEDIR}>
$<INSTALL_INTERFACE:${INSTALL_INCLUDEDIR}/QtCore>
)
qt_feature_module_begin(NO_MODULE
PUBLIC_FILE src/corelib/global/qconfig.h
PRIVATE_FILE src/corelib/global/qconfig_p.h
)
include("${CMAKE_CURRENT_SOURCE_DIR}/configure.cmake")
# Do what mkspecs/features/uikit/default_pre.prf does, aka enable sse2 for
# simulator_and_device_builds.
if(UIKIT AND NOT QT_UIKIT_SDK)
set(__QtFeature_custom_enabled_cache_variables
TEST_subarch_sse2
FEATURE_sse2
QT_FEATURE_sse2)
endif()
qt_feature_module_end(GlobalConfig OUT_VAR_PREFIX "__GlobalConfig_")
qt_generate_global_config_pri_file()
qt_generate_global_module_pri_file()
qt_generate_global_device_pri_file()
qt_generate_qmake_wrapper_for_target()
add_library(Qt::GlobalConfig ALIAS GlobalConfig)
add_library(GlobalConfigPrivate INTERFACE)
target_link_libraries(GlobalConfigPrivate INTERFACE GlobalConfig)
target_include_directories(GlobalConfigPrivate INTERFACE
$<BUILD_INTERFACE:${PROJECT_BINARY_DIR}/include/QtCore/${PROJECT_VERSION}>
$<BUILD_INTERFACE:${PROJECT_BINARY_DIR}/include/QtCore/${PROJECT_VERSION}/QtCore>
$<INSTALL_INTERFACE:${INSTALL_INCLUDEDIR}/QtCore/${PROJECT_VERSION}>
$<INSTALL_INTERFACE:${INSTALL_INCLUDEDIR}/QtCore/${PROJECT_VERSION}/QtCore>
)
add_library(Qt::GlobalConfigPrivate ALIAS GlobalConfigPrivate)
include(QtPublicTargetsHelpers)
qt_internal_setup_public_platform_target()
# defines PlatformCommonInternal PlatformModuleInternal PlatformPluginInternal PlatformToolInternal
include(QtInternalTargets)
set(__export_targets Platform
GlobalConfig
GlobalConfigPrivate
PlatformCommonInternal
PlatformModuleInternal
PlatformPluginInternal
PlatformAppInternal
PlatformToolInternal)
set(__export_name "${INSTALL_CMAKE_NAMESPACE}Targets")
qt_install(TARGETS ${__export_targets} EXPORT "${__export_name}")
qt_install(EXPORT ${__export_name}
NAMESPACE ${QT_CMAKE_EXPORT_NAMESPACE}::
DESTINATION "${__GlobalConfig_install_dir}")
qt_internal_export_modern_cmake_config_targets_file(TARGETS ${__export_targets}
EXPORT_NAME_PREFIX ${INSTALL_CMAKE_NAMESPACE}
CONFIG_INSTALL_DIR
${__GlobalConfig_install_dir})
## Install some QtBase specific CMake files:
qt_copy_or_install(FILES
cmake/ModuleDescription.json.in
cmake/Qt3rdPartyLibraryConfig.cmake.in
cmake/Qt3rdPartyLibraryHelpers.cmake
cmake/QtAppHelpers.cmake
cmake/QtAutogenHelpers.cmake
cmake/QtBuild.cmake
cmake/QtBuildInformation.cmake
cmake/QtCMakeHelpers.cmake
cmake/QtCMakeVersionHelpers.cmake
cmake/QtCompatibilityHelpers.cmake
cmake/QtCompilerFlags.cmake
cmake/QtCompilerOptimization.cmake
cmake/QtConfigDependencies.cmake.in
cmake/QtDeferredDependenciesHelpers.cmake
cmake/QtDbusHelpers.cmake
cmake/QtDocsHelpers.cmake
cmake/QtExecutableHelpers.cmake
cmake/QtFeature.cmake
cmake/QtFeatureCommon.cmake
cmake/QtFileConfigure.txt.in
cmake/QtFindPackageHelpers.cmake
cmake/QtFindWrapConfigExtra.cmake.in
cmake/QtFindWrapHelper.cmake
cmake/QtFinishPrlFile.cmake
cmake/QtFlagHandlingHelpers.cmake
cmake/QtFrameworkHelpers.cmake
cmake/QtGenerateExtPri.cmake
cmake/QtGenerateLibHelpers.cmake
cmake/QtGenerateLibPri.cmake
cmake/QtGlobalStateHelpers.cmake
cmake/QtHeadersClean.cmake
cmake/QtInstallHelpers.cmake
cmake/QtJavaHelpers.cmake
cmake/QtLalrHelpers.cmake
cmake/QtModuleConfig.cmake.in
cmake/QtModuleDependencies.cmake.in
cmake/QtModuleHelpers.cmake
cmake/QtModuleToolsConfig.cmake.in
cmake/QtModuleToolsDependencies.cmake.in
cmake/QtModuleToolsVersionlessTargets.cmake.in
cmake/QtNoLinkTargetHelpers.cmake
cmake/QtPlatformAndroid.cmake
cmake/QtPlatformSupport.cmake
cmake/QtPluginConfig.cmake.in
cmake/QtPluginDependencies.cmake.in
cmake/QtPluginHelpers.cmake
cmake/QtPlugins.cmake.in
cmake/QtPostProcess.cmake
cmake/QtPostProcessHelpers.cmake
cmake/QtPrecompiledHeadersHelpers.cmake
cmake/QtPriHelpers.cmake
cmake/QtPrlHelpers.cmake
cmake/QtPublicTargetsHelpers.cmake
cmake/QtProcessConfigureArgs.cmake
cmake/QtQmakeHelpers.cmake
cmake/QtResourceHelpers.cmake
cmake/QtRpathHelpers.cmake
cmake/QtSanitizerHelpers.cmake
cmake/QtScopeFinalizerHelpers.cmake
cmake/QtSeparateDebugInfo.Info.plist.in
cmake/QtSeparateDebugInfo.cmake
cmake/QtSetup.cmake
cmake/QtSimdHelpers.cmake
cmake/QtStartupHelpers.cmake
cmake/QtStandaloneTestsConfig.cmake.in
cmake/QtSyncQtHelpers.cmake
cmake/QtTargetHelpers.cmake
cmake/QtTestHelpers.cmake
cmake/QtToolchainHelpers.cmake
cmake/QtToolHelpers.cmake
cmake/QtWrapperScriptHelpers.cmake
cmake/QtWriteArgsFile.cmake
DESTINATION "${__GlobalConfig_install_dir}"
)
file(COPY cmake/QtFeature.cmake DESTINATION "${__GlobalConfig_build_dir}")
# TODO: Check whether this is the right place to install these
qt_copy_or_install(DIRECTORY cmake/3rdparty DESTINATION "${__GlobalConfig_install_dir}")
# Install our custom Find modules, which will be used by the find_dependency() calls
# inside the generated ModuleDependencies cmake files.
qt_copy_or_install(DIRECTORY cmake/
DESTINATION "${__GlobalConfig_install_dir}"
FILES_MATCHING PATTERN "Find*.cmake"
PATTERN "tests" EXCLUDE
PATTERN "3rdparty" EXCLUDE
)
if(MACOS)
qt_copy_or_install(FILES
cmake/macos/MacOSXBundleInfo.plist.in
DESTINATION "${__GlobalConfig_install_dir}/macos"
)
endif()