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qt5base-lts/cmake/QtBuildInternals/QtBuildInternalsConfig.cmake
Alexandru Croitor d1a17d9655 CMake: Fix reconfiguration when -no-opengl is specified 
In a previous change, we ensured that all INPUT_foo cache variables are
unset at the end of configuration, so they don't influence feature
re-evaluation in case if a command line flag like -no-gui is not
specified upon second reconfiguration and a FEATURE_foo is manually
toggled in the CMakeCache.txt, effectively getting rid of
stale INPUT_foo values.

Unfortunately that causes an issue when configuring with -no-opengl
and then trying to reconfigure with 'cmake .'

Specifically various feature options like ENABLE / DISABLE use
INPUT_foo variables in their expressions.
qt_configure_add_report_entry CONDITIONs also use them.

These expect the INPUT_foo variables to be persisted, and if they are
removed, the expressions might be re-evaluated to a different value,
and cause re-configuration to fail or unexpectedly toggle features.

To support both cases described above, instead of removing all INPUT
variables when configuration ends, only unset those INPUT variables
whose corresponding FEATURE_foo variable has been manually toggled in
CMakeCache.txt or via an IDE.

Toggling a FEATURE_foo manually is intentional, which means the
INPUT_foo value should be discarded. Whereas pre-existing INPUT_bar
variables will persist, thus not breaking cases like the -no-opengl
report CONDITION.

Amends 2799391703

Pick-to: 6.6
Fixes: QTBUG-116973
Task-number: QTBUG-112957
Change-Id: I5851255bfa41a9a1d116630a5d9f7b9a74aa93ed
Reviewed-by: Alexey Edelev <alexey.edelev@qt.io>
2023-09-13 20:09:19 +02:00

1584 lines
67 KiB
CMake
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# Copyright (C) 2022 The Qt Company Ltd.
# SPDX-License-Identifier: BSD-3-Clause
# These values should be kept in sync with those in qtbase/.cmake.conf
cmake_minimum_required(VERSION 3.16...3.21)
###############################################
#
# Macros and functions for building Qt modules
#
###############################################
# Recursively reads the dependencies section from dependencies.yaml in ${repo_dir} and returns the
# list of dependencies, including transitive ones, in out_var.
#
# The returned dependencies are topologically sorted.
#
# Example output for qtdeclarative:
# qtbase;qtimageformats;qtlanguageserver;qtshadertools;qtsvg
#
function(qt_internal_read_repo_dependencies out_var repo_dir)
set(seen ${ARGN})
set(dependencies "")
set(in_dependencies_section FALSE)
set(dependencies_file "${repo_dir}/dependencies.yaml")
if(EXISTS "${dependencies_file}")
file(STRINGS "${dependencies_file}" lines)
foreach(line IN LISTS lines)
if(line MATCHES "^([^ ]+):")
if(CMAKE_MATCH_1 STREQUAL "dependencies")
set(in_dependencies_section TRUE)
else()
set(in_dependencies_section FALSE)
endif()
elseif(in_dependencies_section AND line MATCHES "^ (.+):$")
set(dependency "${CMAKE_MATCH_1}")
set(dependency_repo_dir "${repo_dir}/${dependency}")
string(REGEX MATCH "[^/]+$" dependency "${dependency}")
if(NOT dependency IN_LIST seen)
qt_internal_read_repo_dependencies(subdeps "${dependency_repo_dir}"
${seen} ${dependency})
list(APPEND dependencies ${subdeps} ${dependency})
endif()
endif()
endforeach()
list(REMOVE_DUPLICATES dependencies)
endif()
set(${out_var} "${dependencies}" PARENT_SCOPE)
endfunction()
set(QT_BACKUP_CMAKE_INSTALL_PREFIX_BEFORE_EXTRA_INCLUDE "${CMAKE_INSTALL_PREFIX}")
if(EXISTS "${CMAKE_CURRENT_LIST_DIR}/QtBuildInternalsExtra.cmake")
include(${CMAKE_CURRENT_LIST_DIR}/QtBuildInternalsExtra.cmake)
endif()
# The variables might have already been set in QtBuildInternalsExtra.cmake if the file is included
# while building a new module and not QtBase. In that case, stop overriding the value.
if(NOT INSTALL_CMAKE_NAMESPACE)
set(INSTALL_CMAKE_NAMESPACE "Qt${PROJECT_VERSION_MAJOR}"
CACHE STRING "CMake namespace [Qt${PROJECT_VERSION_MAJOR}]")
endif()
if(NOT QT_CMAKE_EXPORT_NAMESPACE)
set(QT_CMAKE_EXPORT_NAMESPACE "Qt${PROJECT_VERSION_MAJOR}"
CACHE STRING "CMake namespace used when exporting targets [Qt${PROJECT_VERSION_MAJOR}]")
endif()
macro(qt_set_up_build_internals_paths)
# Set up the paths for the cmake modules located in the prefix dir. Prepend, so the paths are
# least important compared to the source dir ones, but more important than command line
# provided ones.
set(QT_CMAKE_MODULE_PATH "${QT_BUILD_INTERNALS_PATH}/../${QT_CMAKE_EXPORT_NAMESPACE}")
list(PREPEND CMAKE_MODULE_PATH "${QT_CMAKE_MODULE_PATH}")
# Prepend the qtbase source cmake directory to CMAKE_MODULE_PATH,
# so that if a change is done in cmake/QtBuild.cmake, it gets automatically picked up when
# building qtdeclarative, rather than having to build qtbase first (which will copy
# QtBuild.cmake to the build dir). This is similar to qmake non-prefix builds, where the
# source qtbase/mkspecs directory is used.
# TODO: Clean this up, together with qt_internal_try_compile_binary_for_strip to only use the
# the qtbase sources when building qtbase. And perhaps also when doing a non-prefix
# developer-build.
if(EXISTS "${QT_SOURCE_TREE}/cmake")
list(PREPEND CMAKE_MODULE_PATH "${QT_SOURCE_TREE}/cmake")
endif()
# If the repo has its own cmake modules, include those in the module path.
if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
list(PREPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
endif()
# Find the cmake files when doing a standalone tests build.
if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/../cmake")
list(PREPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/../cmake")
endif()
endmacro()
# Set up the build internal paths unless explicitly requested not to.
if(NOT QT_BUILD_INTERNALS_SKIP_CMAKE_MODULE_PATH_ADDITION)
qt_set_up_build_internals_paths()
endif()
# Define some constants to check for certain platforms, etc.
# Needs to be loaded before qt_repo_build() to handle require() clauses before even starting a repo
# build.
include(QtPlatformSupport)
# Set FEATURE_${feature} if INPUT_${feature} is set in certain circumstances.
# Set FEATURE_${feature}_computed_from_input to TRUE or FALSE depending on whether the
# INPUT_${feature} value has overridden the FEATURE_${feature} variable.
#
# Needs to be in QtBuildInternalsConfig.cmake instead of QtFeature.cmake because it's used in
# qt_build_internals_disable_pkg_config_if_needed.
function(qt_internal_compute_feature_value_from_possible_input feature)
# If FEATURE_ is not defined try to use the INPUT_ variable to enable/disable feature.
# If FEATURE_ is defined and the configure script is being used (so
# QT_INTERNAL_CALLED_FROM_CONFIGURE is TRUE), ignore the FEATURE_ variable, and take into
# account the INPUT_ variable instead, because a command line argument takes priority over
# a pre-cached FEATURE_ variable.
if((NOT DEFINED FEATURE_${feature} OR QT_INTERNAL_CALLED_FROM_CONFIGURE)
AND DEFINED INPUT_${feature}
AND NOT "${INPUT_${feature}}" STREQUAL "undefined"
AND NOT "${INPUT_${feature}}" STREQUAL "")
if(INPUT_${feature})
set(FEATURE_${feature} ON)
else()
set(FEATURE_${feature} OFF)
endif()
set(FEATURE_${feature} "${FEATURE_${feature}}" PARENT_SCOPE)
set(FEATURE_${feature}_computed_from_input TRUE PARENT_SCOPE)
else()
set(FEATURE_${feature}_computed_from_input FALSE PARENT_SCOPE)
endif()
endfunction()
function(qt_build_internals_disable_pkg_config_if_needed)
# pkg-config should not be used by default on Darwin and Windows platforms (and QNX), as defined
# in the qtbase/configure.json. Unfortunately by the time the feature is evaluated there are
# already a few find_package() calls that try to use the FindPkgConfig module.
# Thus, we have to duplicate the condition logic here and disable pkg-config for those platforms
# by default.
# We also need to check if the pkg-config executable exists, to mirror the condition test in
# configure.json. We do that by trying to find the executable ourselves, and not delegating to
# the FindPkgConfig module because that has more unwanted side-effects.
#
# Note that on macOS, if the pkg-config feature is enabled by the user explicitly, we will also
# tell CMake to consider paths like /usr/local (Homebrew) as system paths when looking for
# packages.
# We have to do that because disabling these paths but keeping pkg-config
# enabled won't enable finding all system libraries via pkg-config alone, many libraries can
# only be found via FooConfig.cmake files which means /usr/local should be in the system prefix
# path.
set(pkg_config_enabled ON)
qt_build_internals_find_pkg_config_executable()
if(APPLE OR WIN32 OR QNX OR ANDROID OR WASM OR (NOT PKG_CONFIG_EXECUTABLE))
set(pkg_config_enabled OFF)
endif()
# Features won't have been evaluated yet if this is the first run, have to evaluate this here
qt_internal_compute_feature_value_from_possible_input(pkg_config)
# If user explicitly specified a value for the feature, honor it, even if it might break
# the build.
if(DEFINED FEATURE_pkg_config)
if(FEATURE_pkg_config)
set(pkg_config_enabled ON)
else()
set(pkg_config_enabled OFF)
endif()
endif()
set(FEATURE_pkg_config "${pkg_config_enabled}" CACHE STRING "Using pkg-config")
if(NOT pkg_config_enabled)
qt_build_internals_disable_pkg_config()
else()
unset(PKG_CONFIG_EXECUTABLE CACHE)
endif()
endfunction()
# This is a copy of the first few lines in FindPkgConfig.cmake.
function(qt_build_internals_find_pkg_config_executable)
# find pkg-config, use PKG_CONFIG if set
if((NOT PKG_CONFIG_EXECUTABLE) AND (NOT "$ENV{PKG_CONFIG}" STREQUAL ""))
set(PKG_CONFIG_EXECUTABLE "$ENV{PKG_CONFIG}" CACHE FILEPATH "pkg-config executable")
endif()
find_program(PKG_CONFIG_EXECUTABLE NAMES pkg-config DOC "pkg-config executable")
mark_as_advanced(PKG_CONFIG_EXECUTABLE)
endfunction()
function(qt_build_internals_disable_pkg_config)
# Disable pkg-config by setting an empty executable path. There's no documented way to
# mark the package as not found, but we can force all pkg_check_modules calls to do nothing
# by setting the variable to an empty value.
set(PKG_CONFIG_EXECUTABLE "" CACHE STRING "Disabled pkg-config usage." FORCE)
endfunction()
if(NOT QT_BUILD_INTERNALS_SKIP_PKG_CONFIG_ADJUSTMENT)
qt_build_internals_disable_pkg_config_if_needed()
endif()
macro(qt_build_internals_find_pkg_config)
# Find package config once before any system prefix modifications.
find_package(PkgConfig QUIET)
endmacro()
if(NOT QT_BUILD_INTERNALS_SKIP_FIND_PKG_CONFIG)
qt_build_internals_find_pkg_config()
endif()
function(qt_build_internals_set_up_system_prefixes)
if(APPLE AND NOT FEATURE_pkg_config)
# Remove /usr/local and other paths like that which CMake considers as system prefixes on
# darwin platforms. CMake considers them as system prefixes, but in qmake / Qt land we only
# consider the SDK path as a system prefix.
# 3rd party libraries in these locations should not be picked up when building Qt,
# unless opted-in via the pkg-config feature, which in turn will disable this behavior.
#
# Note that we can't remove /usr as a system prefix path, because many programs won't be
# found then (e.g. perl).
set(QT_CMAKE_SYSTEM_PREFIX_PATH_BACKUP "${CMAKE_SYSTEM_PREFIX_PATH}" PARENT_SCOPE)
set(QT_CMAKE_SYSTEM_FRAMEWORK_PATH_BACKUP "${CMAKE_SYSTEM_FRAMEWORK_PATH}" PARENT_SCOPE)
list(REMOVE_ITEM CMAKE_SYSTEM_PREFIX_PATH
"/usr/local" # Homebrew
"/opt/homebrew" # Apple Silicon Homebrew
"/usr/X11R6"
"/usr/pkg"
"/opt"
"/sw" # Fink
"/opt/local" # MacPorts
)
if(_CMAKE_INSTALL_DIR)
list(REMOVE_ITEM CMAKE_SYSTEM_PREFIX_PATH "${_CMAKE_INSTALL_DIR}")
endif()
list(REMOVE_ITEM CMAKE_SYSTEM_FRAMEWORK_PATH "~/Library/Frameworks")
set(CMAKE_SYSTEM_PREFIX_PATH "${CMAKE_SYSTEM_PREFIX_PATH}" PARENT_SCOPE)
set(CMAKE_SYSTEM_FRAMEWORK_PATH "${CMAKE_SYSTEM_FRAMEWORK_PATH}" PARENT_SCOPE)
# Also tell qt_find_package() not to use PATH when looking for packages.
# We can't simply set CMAKE_FIND_USE_SYSTEM_ENVIRONMENT_PATH to OFF because that will break
# find_program(), and for instance ccache won't be found.
# That's why we set a different variable which is used by qt_find_package.
set(QT_NO_USE_FIND_PACKAGE_SYSTEM_ENVIRONMENT_PATH "ON" PARENT_SCOPE)
endif()
endfunction()
if(NOT QT_BUILD_INTERNALS_SKIP_SYSTEM_PREFIX_ADJUSTMENT)
qt_build_internals_set_up_system_prefixes()
endif()
# The macro sets all the necessary pre-conditions and setup consistent environment for building
# the Qt repository. It has to be called right after the find_package(Qt6 COMPONENTS BuildInternals)
# call. Otherwise we cannot make sure that all the required policies will be applied to the Qt
# components that are involved in build procedure.
macro(qt_internal_project_setup)
# Check for the minimum CMake version.
include(QtCMakeVersionHelpers)
qt_internal_require_suitable_cmake_version()
qt_internal_upgrade_cmake_policies()
endmacro()
macro(qt_build_internals_set_up_private_api)
# TODO: this call needs to be removed once all repositories got the qtbase update
qt_internal_project_setup()
# Qt specific setup common for all modules:
include(QtSetup)
include(FeatureSummary)
# Optionally include a repo specific Setup module.
include(${PROJECT_NAME}Setup OPTIONAL)
include(QtRepoSetup OPTIONAL)
# Find Apple frameworks if needed.
qt_find_apple_system_frameworks()
# Decide whether tools will be built.
qt_check_if_tools_will_be_built()
endmacro()
# find all targets defined in $subdir by recursing through all added subdirectories
# populates $qt_repo_targets with a ;-list of non-UTILITY targets
macro(qt_build_internals_get_repo_targets subdir)
get_directory_property(_targets DIRECTORY "${subdir}" BUILDSYSTEM_TARGETS)
if(_targets)
foreach(_target IN LISTS _targets)
get_target_property(_type ${_target} TYPE)
if(NOT ${_type} STREQUAL "UTILITY")
list(APPEND qt_repo_targets "${_target}")
endif()
endforeach()
endif()
get_directory_property(_directories DIRECTORY "${subdir}" SUBDIRECTORIES)
if (_directories)
foreach(_directory IN LISTS _directories)
qt_build_internals_get_repo_targets("${_directory}")
endforeach()
endif()
endmacro()
# add toplevel targets for each subdirectory, e.g. qtbase_src
function(qt_build_internals_add_toplevel_targets)
set(qt_repo_target_all "")
get_directory_property(directories DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}" SUBDIRECTORIES)
foreach(directory IN LISTS directories)
set(qt_repo_targets "")
get_filename_component(qt_repo_target_basename ${directory} NAME)
qt_build_internals_get_repo_targets("${directory}")
if (qt_repo_targets)
set(qt_repo_target_name "${qt_repo_targets_name}_${qt_repo_target_basename}")
message(DEBUG "${qt_repo_target_name} depends on ${qt_repo_targets}")
add_custom_target("${qt_repo_target_name}"
COMMENT "Building everything in ${qt_repo_targets_name}/${qt_repo_target_basename}")
add_dependencies("${qt_repo_target_name}" ${qt_repo_targets})
list(APPEND qt_repo_target_all "${qt_repo_target_name}")
# Create special dependency target for External Project examples excluding targets
# marked as skipped.
if(qt_repo_target_basename STREQUAL "src")
set(qt_repo_target_name
"${qt_repo_targets_name}_${qt_repo_target_basename}_for_examples")
add_custom_target("${qt_repo_target_name}")
set(unskipped_targets "")
foreach(target IN LISTS qt_repo_targets)
if(TARGET "${target}")
qt_internal_is_target_skipped_for_examples("${target}" is_skipped)
if(NOT is_skipped)
list(APPEND unskipped_targets "${target}")
endif()
endif()
endforeach()
if(unskipped_targets)
add_dependencies("${qt_repo_target_name}" ${unskipped_targets})
endif()
endif()
endif()
endforeach()
if (qt_repo_target_all)
# Note qt_repo_targets_name is different from qt_repo_target_name that is used above.
add_custom_target("${qt_repo_targets_name}"
COMMENT "Building everything in ${qt_repo_targets_name}")
add_dependencies("${qt_repo_targets_name}" ${qt_repo_target_all})
message(DEBUG "${qt_repo_targets_name} depends on ${qt_repo_target_all}")
endif()
endfunction()
macro(qt_enable_cmake_languages)
set(__qt_required_language_list C CXX)
set(__qt_platform_required_language_list )
if(APPLE)
list(APPEND __qt_platform_required_language_list OBJC OBJCXX)
endif()
foreach(__qt_lang ${__qt_required_language_list})
enable_language(${__qt_lang})
endforeach()
foreach(__qt_lang ${__qt_platform_required_language_list})
enable_language(${__qt_lang})
endforeach()
# The qtbase call is handled in qtbase/CMakeLists.txt.
# This call is used for projects other than qtbase, including for other project's standalone
# tests.
# Because the function uses QT_FEATURE_foo values, it's important that find_package(Qt6Core) is
# called before this function. but that's usually the case for Qt repos.
if(NOT PROJECT_NAME STREQUAL "QtBase")
qt_internal_set_up_config_optimizations_like_in_qmake()
endif()
endmacro()
# Minimum setup required to have any CMakeList.txt build as as a standalone
# project after importing BuildInternals
macro(qt_prepare_standalone_project)
qt_set_up_build_internals_paths()
qt_build_internals_set_up_private_api()
qt_enable_cmake_languages()
endmacro()
# Define a repo target set, and store accompanying information.
#
# A repo target set is a subset of targets in a Qt module repository. To build a repo target set,
# set QT_BUILD_SINGLE_REPO_TARGET_SET to the name of the repo target set.
#
# This function is to be called in the top-level project file of a repository,
# before qt_internal_prepare_single_repo_target_set_build()
#
# This function stores information in variables of the parent scope.
#
# Positional Arguments:
# name - The name of this repo target set.
#
# Named Arguments:
# DEPENDS - List of Qt6 COMPONENTS that are build dependencies of this repo target set.
function(qt_internal_define_repo_target_set name)
set(oneValueArgs DEPENDS)
set(prefix QT_REPO_TARGET_SET_)
cmake_parse_arguments(${prefix}${name} "" ${oneValueArgs} "" ${ARGN})
foreach(arg IN LISTS oneValueArgs)
set(${prefix}${name}_${arg} ${${prefix}${name}_${arg}} PARENT_SCOPE)
endforeach()
set(QT_REPO_KNOWN_TARGET_SETS "${QT_REPO_KNOWN_TARGET_SETS};${name}" PARENT_SCOPE)
endfunction()
# Setup a single repo target set build if QT_BUILD_SINGLE_REPO_TARGET_SET is defined.
#
# This macro must be called in the top-level project file of the repository after all repo target
# sets have been defined.
macro(qt_internal_prepare_single_repo_target_set_build)
if(DEFINED QT_BUILD_SINGLE_REPO_TARGET_SET)
if(NOT QT_BUILD_SINGLE_REPO_TARGET_SET IN_LIST QT_REPO_KNOWN_TARGET_SETS)
message(FATAL_ERROR
"Repo target set '${QT_BUILD_SINGLE_REPO_TARGET_SET}' is undefined.")
endif()
message(STATUS
"Preparing single repo target set build of ${QT_BUILD_SINGLE_REPO_TARGET_SET}")
if (NOT "${QT_REPO_TARGET_SET_${QT_BUILD_SINGLE_REPO_TARGET_SET}_DEPENDS}" STREQUAL "")
find_package(${INSTALL_CMAKE_NAMESPACE} ${PROJECT_VERSION} CONFIG REQUIRED
COMPONENTS ${QT_REPO_TARGET_SET_${QT_BUILD_SINGLE_REPO_TARGET_SET}_DEPENDS})
endif()
endif()
endmacro()
macro(qt_build_repo_begin)
set(QT_INTERNAL_REPO_POST_PROCESS_CALLED FALSE)
list(APPEND CMAKE_MESSAGE_CONTEXT "${PROJECT_NAME}")
qt_build_internals_set_up_private_api()
# Prevent installation in non-prefix builds.
# We need to associate targets with export names, and that is only possible to do with the
# install(TARGETS) command. But in a non-prefix build, we don't want to install anything.
# To make sure that developers don't accidentally run make install, add bail out code to
# cmake_install.cmake.
if(NOT QT_WILL_INSTALL)
# In a top-level build, print a message only in qtbase, which is the first repository.
if(NOT QT_SUPERBUILD OR (PROJECT_NAME STREQUAL "QtBase"))
install(CODE [[message(FATAL_ERROR
"Qt was configured as non-prefix build. "
"Installation is not supported for this arrangement.")]])
endif()
install(CODE [[return()]])
endif()
qt_enable_cmake_languages()
qt_internal_generate_binary_strip_wrapper()
# Add global docs targets that will work both for per-repo builds, and super builds.
if(NOT TARGET docs)
add_custom_target(docs)
add_custom_target(prepare_docs)
add_custom_target(generate_docs)
add_custom_target(html_docs)
add_custom_target(qch_docs)
add_custom_target(install_html_docs)
add_custom_target(install_qch_docs)
add_custom_target(install_docs)
add_dependencies(html_docs generate_docs)
add_dependencies(docs html_docs qch_docs)
add_dependencies(install_docs install_html_docs install_qch_docs)
endif()
if(NOT TARGET sync_headers)
add_custom_target(sync_headers)
endif()
# The special target that we use to sync 3rd-party headers before the gn run when building
# qtwebengine in top-level builds.
if(NOT TARGET thirdparty_sync_headers)
add_custom_target(thirdparty_sync_headers)
endif()
# Add global qt_plugins, qpa_plugins and qpa_default_plugins convenience custom targets.
# Internal executables will add a dependency on the qpa_default_plugins target,
# so that building and running a test ensures it won't fail at runtime due to a missing qpa
# plugin.
if(NOT TARGET qt_plugins)
add_custom_target(qt_plugins)
add_custom_target(qpa_plugins)
add_custom_target(qpa_default_plugins)
endif()
string(TOLOWER ${PROJECT_NAME} project_name_lower)
# Target to build all plugins that are part of the current repo.
set(qt_repo_plugins "qt_plugins_${project_name_lower}")
if(NOT TARGET ${qt_repo_plugins})
add_custom_target(${qt_repo_plugins})
endif()
# Target to build all plugins that are part of the current repo and the current repo's
# dependencies plugins. Used for external project example dependencies.
set(qt_repo_plugins_recursive "${qt_repo_plugins}_recursive")
if(NOT TARGET ${qt_repo_plugins_recursive})
add_custom_target(${qt_repo_plugins_recursive})
add_dependencies(${qt_repo_plugins_recursive} "${qt_repo_plugins}")
endif()
qt_internal_read_repo_dependencies(qt_repo_deps "${PROJECT_SOURCE_DIR}")
if(qt_repo_deps)
foreach(qt_repo_dep IN LISTS qt_repo_deps)
if(TARGET qt_plugins_${qt_repo_dep})
message(DEBUG
"${qt_repo_plugins_recursive} depends on qt_plugins_${qt_repo_dep}")
add_dependencies(${qt_repo_plugins_recursive} "qt_plugins_${qt_repo_dep}")
endif()
endforeach()
endif()
set(qt_repo_targets_name ${project_name_lower})
set(qt_docs_target_name docs_${project_name_lower})
set(qt_docs_prepare_target_name prepare_docs_${project_name_lower})
set(qt_docs_generate_target_name generate_docs_${project_name_lower})
set(qt_docs_html_target_name html_docs_${project_name_lower})
set(qt_docs_qch_target_name qch_docs_${project_name_lower})
set(qt_docs_install_html_target_name install_html_docs_${project_name_lower})
set(qt_docs_install_qch_target_name install_qch_docs_${project_name_lower})
set(qt_docs_install_target_name install_docs_${project_name_lower})
add_custom_target(${qt_docs_target_name})
add_custom_target(${qt_docs_prepare_target_name})
add_custom_target(${qt_docs_generate_target_name})
add_custom_target(${qt_docs_qch_target_name})
add_custom_target(${qt_docs_html_target_name})
add_custom_target(${qt_docs_install_html_target_name})
add_custom_target(${qt_docs_install_qch_target_name})
add_custom_target(${qt_docs_install_target_name})
add_dependencies(${qt_docs_generate_target_name} ${qt_docs_prepare_target_name})
add_dependencies(${qt_docs_html_target_name} ${qt_docs_generate_target_name})
add_dependencies(${qt_docs_target_name} ${qt_docs_html_target_name} ${qt_docs_qch_target_name})
add_dependencies(${qt_docs_install_target_name} ${qt_docs_install_html_target_name} ${qt_docs_install_qch_target_name})
# Make top-level prepare_docs target depend on the repository-level prepare_docs_<repo> target.
add_dependencies(prepare_docs ${qt_docs_prepare_target_name})
# Make top-level install_*_docs targets depend on the repository-level install_*_docs targets.
add_dependencies(install_html_docs ${qt_docs_install_html_target_name})
add_dependencies(install_qch_docs ${qt_docs_install_qch_target_name})
# Add host_tools meta target, so that developrs can easily build only tools and their
# dependencies when working in qtbase.
if(NOT TARGET host_tools)
add_custom_target(host_tools)
add_custom_target(bootstrap_tools)
endif()
# Add benchmark meta target. It's collection of all benchmarks added/registered by
# 'qt_internal_add_benchmark' helper.
if(NOT TARGET benchmark)
add_custom_target(benchmark)
endif()
if(QT_INTERNAL_SYNCED_MODULES)
set_property(GLOBAL PROPERTY _qt_synced_modules ${QT_INTERNAL_SYNCED_MODULES})
endif()
endmacro()
# Runs delayed actions on some of the Qt targets.
# Can be called either explicitly or as part of qt_build_repo_end().
macro(qt_build_repo_post_process)
if(NOT QT_INTERNAL_REPO_POST_PROCESS_CALLED)
set(QT_INTERNAL_REPO_POST_PROCESS_CALLED TRUE)
if(NOT QT_BUILD_STANDALONE_TESTS)
include(QtPostProcess)
endif()
endif()
endmacro()
macro(qt_build_repo_end)
if(NOT QT_BUILD_STANDALONE_TESTS)
qt_build_repo_post_process()
# Install the repo-specific cmake find modules.
qt_path_join(__qt_repo_install_dir ${QT_CONFIG_INSTALL_DIR} ${INSTALL_CMAKE_NAMESPACE})
qt_path_join(__qt_repo_build_dir ${QT_CONFIG_BUILD_DIR} ${INSTALL_CMAKE_NAMESPACE})
if(NOT PROJECT_NAME STREQUAL "QtBase")
if(IS_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
qt_copy_or_install(DIRECTORY cmake/
DESTINATION "${__qt_repo_install_dir}"
FILES_MATCHING PATTERN "Find*.cmake"
)
if(QT_SUPERBUILD AND QT_WILL_INSTALL)
file(COPY cmake/
DESTINATION "${__qt_repo_build_dir}"
FILES_MATCHING PATTERN "Find*.cmake"
)
endif()
endif()
endif()
if(NOT QT_SUPERBUILD)
qt_print_feature_summary()
endif()
endif()
qt_build_internals_add_toplevel_targets()
if(NOT QT_SUPERBUILD)
qt_print_build_instructions()
endif()
get_property(synced_modules GLOBAL PROPERTY _qt_synced_modules)
if(synced_modules)
set(QT_INTERNAL_SYNCED_MODULES ${synced_modules} CACHE INTERNAL
"List of the synced modules. Prevents running syncqt.cpp after the first configuring.")
endif()
if(NOT QT_SUPERBUILD)
qt_internal_save_previously_visited_packages()
endif()
if(QT_INTERNAL_FRESH_REQUESTED)
set(QT_INTERNAL_FRESH_REQUESTED "FALSE" CACHE INTERNAL "")
endif()
if(NOT QT_SUPERBUILD)
qt_internal_qt_configure_end()
endif()
list(POP_BACK CMAKE_MESSAGE_CONTEXT)
endmacro()
# Function called either at the end of per-repo configuration, or at the end of configuration of
# a super build.
# At the moment it is called before examples are configured in a per-repo build. We might want
# to change that at some point if needed.
function(qt_internal_qt_configure_end)
# If Qt is configued via the configure script, remove the marker variable, so that any future
# reconfigurations that are done by calling cmake directly don't trigger configure specific
# logic.
unset(QT_INTERNAL_CALLED_FROM_CONFIGURE CACHE)
endfunction()
macro(qt_build_repo)
qt_build_repo_begin(${ARGN})
qt_build_repo_impl_find_package_tests()
qt_build_repo_impl_src()
qt_build_repo_impl_tools()
qt_build_repo_post_process()
qt_build_repo_impl_tests()
qt_build_repo_end()
qt_build_repo_impl_examples()
endmacro()
macro(qt_build_repo_impl_find_package_tests)
# If testing is enabled, try to find the qtbase Test package.
# Do this before adding src, because there might be test related conditions
# in source.
if (QT_BUILD_TESTS AND NOT QT_BUILD_STANDALONE_TESTS)
# When looking for the Test package, do it using the Qt6 package version, in case if
# PROJECT_VERSION is following a different versioning scheme.
if(Qt6_VERSION)
set(_qt_build_repo_impl_find_package_tests_version "${Qt6_VERSION}")
else()
set(_qt_build_repo_impl_find_package_tests_version "${PROJECT_VERSION}")
endif()
find_package(Qt6
"${_qt_build_repo_impl_find_package_tests_version}"
CONFIG REQUIRED COMPONENTS Test)
unset(_qt_build_repo_impl_find_package_tests_version)
endif()
endmacro()
macro(qt_build_repo_impl_src)
if(NOT QT_BUILD_STANDALONE_TESTS)
if (EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/src/CMakeLists.txt")
add_subdirectory(src)
endif()
endif()
if(QT_FEATURE_lttng AND NOT TARGET LTTng::UST)
qt_find_package(LTTngUST PROVIDED_TARGETS LTTng::UST
MODULE_NAME global QMAKE_LIB lttng-ust)
endif()
endmacro()
macro(qt_build_repo_impl_tools)
if(NOT QT_BUILD_STANDALONE_TESTS)
if (EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/tools/CMakeLists.txt")
add_subdirectory(tools)
endif()
endif()
endmacro()
macro(qt_build_repo_impl_tests)
if (QT_BUILD_TESTS AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/tests/CMakeLists.txt")
add_subdirectory(tests)
if(NOT QT_BUILD_TESTS_BY_DEFAULT)
set_property(DIRECTORY tests PROPERTY EXCLUDE_FROM_ALL TRUE)
endif()
endif()
endmacro()
macro(qt_build_repo_impl_examples)
if(QT_BUILD_EXAMPLES
AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/examples/CMakeLists.txt"
AND NOT QT_BUILD_STANDALONE_TESTS)
message(STATUS "Configuring examples.")
add_subdirectory(examples)
endif()
endmacro()
macro(qt_set_up_standalone_tests_build)
# Remove this macro once all usages of it have been removed.
# Standalone tests are not handled via the main repo project and qt_build_tests.
endmacro()
function(qt_get_standalone_tests_config_files_path out_var)
set(path "${QT_CONFIG_INSTALL_DIR}/${INSTALL_CMAKE_NAMESPACE}BuildInternals/StandaloneTests")
# QT_CONFIG_INSTALL_DIR is relative in prefix builds.
if(QT_WILL_INSTALL)
if(DEFINED CMAKE_STAGING_PREFIX)
qt_path_join(path "${CMAKE_STAGING_PREFIX}" "${path}")
else()
qt_path_join(path "${CMAKE_INSTALL_PREFIX}" "${path}")
endif()
endif()
set("${out_var}" "${path}" PARENT_SCOPE)
endfunction()
function(qt_internal_get_standalone_tests_config_file_name out_var)
# When doing a "single repo target set" build (like in qtscxqml) ensure we use a unique tests
# config file for each repo target set. Using the PROJECT_NAME only is not enough because
# the same file will be overridden with different content on each repo set install.
set(tests_config_file_name "${PROJECT_NAME}")
if(QT_BUILD_SINGLE_REPO_TARGET_SET)
string(APPEND tests_config_file_name "RepoSet${QT_BUILD_SINGLE_REPO_TARGET_SET}")
endif()
string(APPEND tests_config_file_name "TestsConfig.cmake")
set(${out_var} "${tests_config_file_name}" PARENT_SCOPE)
endfunction()
macro(qt_build_tests)
set(CMAKE_UNITY_BUILD OFF)
# Prepending to QT_BUILD_CMAKE_PREFIX_PATH helps find components of Qt6, because those
# find_package calls use NO_DEFAULT_PATH, and thus CMAKE_PREFIX_PATH is ignored.
list(PREPEND CMAKE_FIND_ROOT_PATH "${QT_BUILD_DIR}")
list(PREPEND QT_BUILD_CMAKE_PREFIX_PATH "${QT_BUILD_DIR}/${INSTALL_LIBDIR}/cmake")
if(QT_BUILD_STANDALONE_TESTS)
# Find location of TestsConfig.cmake. These contain the modules that need to be
# find_package'd when testing.
qt_get_standalone_tests_config_files_path(_qt_build_tests_install_prefix)
qt_internal_get_standalone_tests_config_file_name(_qt_tests_config_file_name)
set(_qt_standalone_tests_config_file_path
"${_qt_build_tests_install_prefix}/${_qt_tests_config_file_name}")
include("${_qt_standalone_tests_config_file_path}"
OPTIONAL
RESULT_VARIABLE _qt_standalone_tests_included)
if(NOT _qt_standalone_tests_included)
message(DEBUG
"Standalone tests config file not included because it does not exist: "
"${_qt_standalone_tests_config_file_path}"
)
else()
message(DEBUG
"Standalone tests config file included successfully: "
"${_qt_standalone_tests_config_file_path}"
)
endif()
unset(_qt_standalone_tests_config_file_path)
unset(_qt_standalone_tests_included)
unset(_qt_tests_config_file_name)
# Of course we always need the test module as well.
# When looking for the Test package, do it using the Qt6 package version, in case if
# PROJECT_VERSION is following a different versioning scheme.
if(Qt6_VERSION)
set(_qt_build_tests_package_version "${Qt6_VERSION}")
else()
set(_qt_build_tests_package_version "${PROJECT_VERSION}")
endif()
find_package(Qt6 "${_qt_build_tests_package_version}" CONFIG REQUIRED COMPONENTS Test)
unset(_qt_build_tests_package_version)
# Set language standards after finding Core, because that's when the relevant
# feature variables are available, and the call in QtSetup is too early when building
# standalone tests, because Core was not find_package()'d yet.
qt_set_language_standards()
if(NOT QT_SUPERBUILD)
# Set up fake standalone tests install prefix, so we don't pollute the Qt install
# prefix. For super builds it needs to be done in qt5/CMakeLists.txt.
qt_set_up_fake_standalone_tests_install_prefix()
endif()
else()
if(ANDROID)
# When building in-tree tests we need to specify the QT_ANDROID_ABIS list. Since we
# build Qt for the single ABI, build tests for this ABI only.
set(QT_ANDROID_ABIS "${CMAKE_ANDROID_ARCH_ABI}")
endif()
endif()
if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/auto/CMakeLists.txt")
add_subdirectory(auto)
endif()
if(NOT QT_BUILD_MINIMAL_STATIC_TESTS AND NOT QT_BUILD_MINIMAL_ANDROID_MULTI_ABI_TESTS)
if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/baseline/CMakeLists.txt")
add_subdirectory(baseline)
endif()
if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/benchmarks/CMakeLists.txt" AND QT_BUILD_BENCHMARKS)
add_subdirectory(benchmarks)
endif()
if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/manual/CMakeLists.txt" AND QT_BUILD_MANUAL_TESTS)
add_subdirectory(manual)
endif()
endif()
set(CMAKE_UNITY_BUILD ${QT_UNITY_BUILD})
endmacro()
function(qt_compute_relative_path_from_cmake_config_dir_to_prefix)
# Compute the reverse relative path from the CMake config dir to the install prefix.
# This is used in QtBuildInternalsExtras to create a relocatable relative install prefix path.
# This path is used for finding syncqt and other things, regardless of initial install prefix
# (e.g installed Qt was archived and unpacked to a different path on a different machine).
#
# This is meant to be called only once when configuring qtbase.
#
# Similar code exists in Qt6CoreConfigExtras.cmake.in and src/corelib/CMakeLists.txt which
# might not be needed anymore.
if(CMAKE_STAGING_PREFIX)
set(__qt_prefix "${CMAKE_STAGING_PREFIX}")
else()
set(__qt_prefix "${CMAKE_INSTALL_PREFIX}")
endif()
if(QT_WILL_INSTALL)
get_filename_component(clean_config_prefix
"${__qt_prefix}/${QT_CONFIG_INSTALL_DIR}" ABSOLUTE)
else()
get_filename_component(clean_config_prefix "${QT_CONFIG_BUILD_DIR}" ABSOLUTE)
endif()
file(RELATIVE_PATH
qt_path_from_cmake_config_dir_to_prefix
"${clean_config_prefix}" "${__qt_prefix}")
set(qt_path_from_cmake_config_dir_to_prefix "${qt_path_from_cmake_config_dir_to_prefix}"
PARENT_SCOPE)
endfunction()
function(qt_get_relocatable_install_prefix out_var)
# We need to compute it only once while building qtbase. Afterwards it's loaded from
# QtBuildInternalsExtras.cmake.
if(QT_BUILD_INTERNALS_RELOCATABLE_INSTALL_PREFIX)
return()
endif()
# The QtBuildInternalsExtras value is dynamically computed, whereas the initial qtbase
# configuration uses an absolute path.
set(${out_var} "${CMAKE_INSTALL_PREFIX}" PARENT_SCOPE)
endfunction()
function(qt_set_up_fake_standalone_tests_install_prefix)
# Set a fake local (non-cache) CMAKE_INSTALL_PREFIX.
# Needed for standalone tests, we don't want to accidentally install a test into the Qt prefix.
# Allow opt-out, if a user knows what they're doing.
if(QT_NO_FAKE_STANDALONE_TESTS_INSTALL_PREFIX)
return()
endif()
set(new_install_prefix "${CMAKE_BINARY_DIR}/fake_prefix")
# It's IMPORTANT that this is not a cache variable. Otherwise
# qt_get_standalone_tests_confg_files_path() will not work on re-configuration.
message(STATUS
"Setting local standalone test install prefix (non-cached) to '${new_install_prefix}'.")
set(CMAKE_INSTALL_PREFIX "${new_install_prefix}" PARENT_SCOPE)
# We also need to clear the staging prefix if it's set, otherwise CMake will modify any computed
# rpaths containing the staging prefix to point to the new fake prefix, which is not what we
# want. This replacement is done in cmComputeLinkInformation::GetRPath().
#
# By clearing the staging prefix for the standalone tests, any detected link time
# rpaths will be embedded as-is, which will point to the place where Qt was installed (aka
# the staging prefix).
if(DEFINED CMAKE_STAGING_PREFIX)
message(STATUS "Clearing local standalone test staging prefix (non-cached).")
set(CMAKE_STAGING_PREFIX "" PARENT_SCOPE)
endif()
endfunction()
# Mean to be called when configuring examples as part of the main build tree, as well as for CMake
# tests (tests that call CMake to try and build CMake applications).
macro(qt_internal_set_up_build_dir_package_paths)
list(PREPEND CMAKE_PREFIX_PATH "${QT_BUILD_DIR}/${INSTALL_LIBDIR}/cmake")
# Make sure the CMake config files do not recreate the already-existing targets
set(QT_NO_CREATE_TARGETS TRUE)
endmacro()
macro(qt_examples_build_begin)
set(options EXTERNAL_BUILD)
set(singleOpts "")
set(multiOpts DEPENDS)
cmake_parse_arguments(arg "${options}" "${singleOpts}" "${multiOpts}" ${ARGN})
set(CMAKE_UNITY_BUILD OFF)
# Use by qt_internal_add_example.
set(QT_EXAMPLE_BASE_DIR "${CMAKE_CURRENT_SOURCE_DIR}")
if(arg_EXTERNAL_BUILD AND QT_BUILD_EXAMPLES_AS_EXTERNAL)
# Examples will be built using ExternalProject.
# We depend on all plugins built as part of the current repo as well as current repo's
# dependencies plugins, to prevent opportunities for
# weird errors associated with loading out-of-date plugins from
# unrelated Qt modules.
# We also depend on all targets from this repo's src and tools subdirectories
# to ensure that we've built anything that a find_package() call within
# an example might use. Projects can add further dependencies if needed,
# but that should rarely be necessary.
set(QT_EXAMPLE_DEPENDENCIES ${qt_repo_plugins_recursive} ${arg_DEPENDS})
if(TARGET ${qt_repo_targets_name}_src)
list(APPEND QT_EXAMPLE_DEPENDENCIES ${qt_repo_targets_name}_src_for_examples)
endif()
if(TARGET ${qt_repo_targets_name}_tools)
list(APPEND QT_EXAMPLE_DEPENDENCIES ${qt_repo_targets_name}_tools)
endif()
set(QT_IS_EXTERNAL_EXAMPLES_BUILD TRUE)
string(TOLOWER ${PROJECT_NAME} project_name_lower)
if(NOT TARGET examples)
if(QT_BUILD_EXAMPLES_BY_DEFAULT)
add_custom_target(examples ALL)
else()
add_custom_target(examples)
endif()
endif()
if(NOT TARGET examples_${project_name_lower})
add_custom_target(examples_${project_name_lower})
add_dependencies(examples examples_${project_name_lower})
endif()
include(ExternalProject)
else()
# This repo has not yet been updated to build examples in a separate
# build from this main build, or we can't use that arrangement yet.
# Build them directly as part of the main build instead for backward
# compatibility.
if(NOT BUILD_SHARED_LIBS)
# Ordinarily, it would be an error to call return() from within a
# macro(), but in this case we specifically want to return from the
# caller's scope if we are doing a static build and the project
# isn't building examples in a separate build from the main build.
# Configuring static builds requires tools that are not available
# until build time.
return()
endif()
if(NOT QT_BUILD_EXAMPLES_BY_DEFAULT)
set_directory_properties(PROPERTIES EXCLUDE_FROM_ALL TRUE)
endif()
endif()
# TODO: Change this to TRUE when all examples in all repos are ported to use
# qt_internal_add_example.
# We shouldn't need to call qt_internal_set_up_build_dir_package_paths when
# QT_IS_EXTERNAL_EXAMPLES_BUILD is TRUE.
# Due to not all examples being ported, if we don't
# call qt_internal_set_up_build_dir_package_paths -> set(QT_NO_CREATE_TARGETS TRUE) we'll get
# CMake configuration errors saying we redefine Qt targets because we both build them and find
# them as part of find_package.
set(__qt_all_examples_ported_to_external_projects FALSE)
# Examples that are built as part of the Qt build need to use the CMake config files from the
# build dir, because they are not installed yet in a prefix build.
# Prepending to CMAKE_PREFIX_PATH helps find the initial Qt6Config.cmake.
# Prepending to QT_BUILD_CMAKE_PREFIX_PATH helps find components of Qt6, because those
# find_package calls use NO_DEFAULT_PATH, and thus CMAKE_PREFIX_PATH is ignored.
# Prepending to CMAKE_FIND_ROOT_PATH ensures the components are found while cross-compiling
# without setting CMAKE_FIND_ROOT_PATH_MODE_PACKAGE to BOTH.
if(NOT QT_IS_EXTERNAL_EXAMPLES_BUILD OR NOT __qt_all_examples_ported_to_external_projects)
qt_internal_set_up_build_dir_package_paths()
list(PREPEND CMAKE_FIND_ROOT_PATH "${QT_BUILD_DIR}")
list(PREPEND QT_BUILD_CMAKE_PREFIX_PATH "${QT_BUILD_DIR}/${INSTALL_LIBDIR}/cmake")
endif()
# Because CMAKE_INSTALL_RPATH is empty by default in the repo project, examples need to have
# it set here, so they can run when installed.
# This means that installed examples are not relocatable at the moment. We would need to
# annotate where each example is installed to, to be able to derive a relative rpath, and it
# seems there's no way to query such information from CMake itself.
set(CMAKE_INSTALL_RPATH "${_default_install_rpath}")
install(CODE "
# Backup CMAKE_INSTALL_PREFIX because we're going to change it in each example subdirectory
# and restore it after all examples are processed so that QtFooToolsAdditionalTargetInfo.cmake
# files are installed into the original install prefix.
set(_qt_internal_examples_cmake_install_prefix_backup \"\${CMAKE_INSTALL_PREFIX}\")
")
endmacro()
macro(qt_examples_build_end)
# We use AUTOMOC/UIC/RCC in the examples. When the examples are part of the
# main build rather than being built in their own separate project, make
# sure we do not fail on a fresh Qt build (e.g. the moc binary won't exist
# yet because it is created at build time).
# This function gets all targets below this directory (excluding custom targets and aliases)
function(get_all_targets _result _dir)
get_property(_subdirs DIRECTORY "${_dir}" PROPERTY SUBDIRECTORIES)
foreach(_subdir IN LISTS _subdirs)
get_all_targets(${_result} "${_subdir}")
endforeach()
get_property(_sub_targets DIRECTORY "${_dir}" PROPERTY BUILDSYSTEM_TARGETS)
set(_real_targets "")
if(_sub_targets)
foreach(__target IN LISTS _sub_targets)
get_target_property(target_type ${__target} TYPE)
if(NOT target_type STREQUAL "UTILITY" AND NOT target_type STREQUAL "ALIAS")
list(APPEND _real_targets ${__target})
endif()
endforeach()
endif()
set(${_result} ${${_result}} ${_real_targets} PARENT_SCOPE)
endfunction()
get_all_targets(targets "${CMAKE_CURRENT_SOURCE_DIR}")
foreach(target ${targets})
qt_autogen_tools(${target} ENABLE_AUTOGEN_TOOLS "moc" "rcc")
if(TARGET Qt::Widgets)
qt_autogen_tools(${target} ENABLE_AUTOGEN_TOOLS "uic")
endif()
set_target_properties(${target} PROPERTIES UNITY_BUILD OFF)
endforeach()
install(CODE "
# Restore backed up CMAKE_INSTALL_PREFIX.
set(CMAKE_INSTALL_PREFIX \"\${_qt_internal_examples_cmake_install_prefix_backup}\")
")
set(CMAKE_UNITY_BUILD ${QT_UNITY_BUILD})
endmacro()
# Allows building an example either as an ExternalProject or in-tree with the Qt build.
# Also allows installing the example sources.
function(qt_internal_add_example subdir)
# Pre-compute unique example name based on the subdir, in case of target name clashes.
qt_internal_get_example_unique_name(unique_example_name "${subdir}")
# QT_INTERNAL_NO_CONFIGURE_EXAMPLES is not meant to be used by Qt builders, it's here for faster
# testing of the source installation code path for build system engineers.
if(NOT QT_INTERNAL_NO_CONFIGURE_EXAMPLES)
if(NOT QT_IS_EXTERNAL_EXAMPLES_BUILD)
qt_internal_add_example_in_tree("${subdir}")
else()
qt_internal_add_example_external_project("${subdir}"
NAME "${unique_example_name}")
endif()
endif()
if(QT_INSTALL_EXAMPLES_SOURCES)
string(TOLOWER ${PROJECT_NAME} project_name_lower)
qt_internal_install_example_sources("${subdir}"
NAME "${unique_example_name}"
REPO_NAME "${project_name_lower}")
endif()
endfunction()
# Gets the install prefix where an example should be installed.
# Used for computing the final installation path.
function(qt_internal_get_example_install_prefix out_var)
# Allow customizing the installation path of the examples. Will be used in CI.
if(QT_INTERNAL_EXAMPLES_INSTALL_PREFIX)
set(qt_example_install_prefix "${QT_INTERNAL_EXAMPLES_INSTALL_PREFIX}")
else()
set(qt_example_install_prefix "${CMAKE_INSTALL_PREFIX}/${INSTALL_EXAMPLESDIR}")
endif()
file(TO_CMAKE_PATH "${qt_example_install_prefix}" qt_example_install_prefix)
set(${out_var} "${qt_example_install_prefix}" PARENT_SCOPE)
endfunction()
# Gets the install prefix where an example's sources should be installed.
# Used for computing the final installation path.
function(qt_internal_get_examples_sources_install_prefix out_var)
# Allow customizing the installation path of the examples source specifically.
if(QT_INTERNAL_EXAMPLES_SOURCES_INSTALL_PREFIX)
set(qt_example_install_prefix "${QT_INTERNAL_EXAMPLES_SOURCES_INSTALL_PREFIX}")
else()
qt_internal_get_example_install_prefix(qt_example_install_prefix)
endif()
file(TO_CMAKE_PATH "${qt_example_install_prefix}" qt_example_install_prefix)
set(${out_var} "${qt_example_install_prefix}" PARENT_SCOPE)
endfunction()
# Gets the relative path of an example, relative to the current repo's examples source dir.
# QT_EXAMPLE_BASE_DIR is meant to be already set in a parent scope.
function(qt_internal_get_example_rel_path out_var subdir)
file(RELATIVE_PATH example_rel_path
"${QT_EXAMPLE_BASE_DIR}" "${CMAKE_CURRENT_SOURCE_DIR}/${subdir}")
set(${out_var} "${example_rel_path}" PARENT_SCOPE)
endfunction()
# Gets the install path where an example should be installed.
function(qt_internal_get_example_install_path out_var subdir)
qt_internal_get_example_install_prefix(qt_example_install_prefix)
qt_internal_get_example_rel_path(example_rel_path "${subdir}")
set(example_install_path "${qt_example_install_prefix}/${example_rel_path}")
set(${out_var} "${example_install_path}" PARENT_SCOPE)
endfunction()
# Gets the install path where an example's sources should be installed.
function(qt_internal_get_examples_sources_install_path out_var subdir)
qt_internal_get_examples_sources_install_prefix(qt_example_install_prefix)
qt_internal_get_example_rel_path(example_rel_path "${subdir}")
set(example_install_path "${qt_example_install_prefix}/${example_rel_path}")
set(${out_var} "${example_install_path}" PARENT_SCOPE)
endfunction()
# Get the unique name of an example project based on its subdir or explicitly given name.
# Makes the name unique by appending a short sha1 hash of the relative path of the example
# if a target of the same name already exist.
function(qt_internal_get_example_unique_name out_var subdir)
qt_internal_get_example_rel_path(example_rel_path "${subdir}")
set(name "${subdir}")
# qtdeclarative has calls like qt_internal_add_example(imagine/automotive)
# so passing a nested subdirectory. Custom targets (and thus ExternalProjects) can't contain
# slashes, so extract the last part of the path to be used as a name.
if(name MATCHES "/")
string(REPLACE "/" ";" exploded_path "${name}")
list(POP_BACK exploded_path last_dir)
if(NOT last_dir)
message(FATAL_ERROR "Example subdirectory must have a name.")
else()
set(name "${last_dir}")
endif()
endif()
# Likely a clash with an example subdir ExternalProject custom target of the same name in a
# top-level build.
if(TARGET "${name}")
string(SHA1 rel_path_hash "${example_rel_path}")
string(SUBSTRING "${rel_path_hash}" 0 4 short_hash)
set(name "${name}-${short_hash}")
endif()
set(${out_var} "${name}" PARENT_SCOPE)
endfunction()
# Use old non-ExternalProject approach, aka build in-tree with the Qt build.
function(qt_internal_add_example_in_tree subdir)
# Unset the default CMAKE_INSTALL_PREFIX that's generated in
# ${CMAKE_CURRENT_BINARY_DIR}/cmake_install.cmake
# so we can override it with a different value in
# ${CMAKE_CURRENT_BINARY_DIR}/${subdir}/cmake_install.cmake
#
install(CODE "
# Unset the CMAKE_INSTALL_PREFIX in the current cmake_install.cmake file so that it can be
# overridden in the included add_subdirectory-specific cmake_install.cmake files instead.
unset(CMAKE_INSTALL_PREFIX)
")
# Override the install prefix in the subdir cmake_install.cmake, so that
# relative install(TARGETS DESTINATION) calls in example projects install where we tell them to.
qt_internal_get_example_install_path(example_install_path "${subdir}")
set(CMAKE_INSTALL_PREFIX "${example_install_path}")
# Make sure unclean example projects have their INSTALL_EXAMPLEDIR set to "."
# Won't have any effect on example projects that don't use INSTALL_EXAMPLEDIR.
# This plus the install prefix above takes care of installing examples where we want them to
# be installed, while allowing us to remove INSTALL_EXAMPLEDIR code in each example
# incrementally.
# TODO: Remove once all repositories use qt_internal_add_example instead of add_subdirectory.
set(QT_INTERNAL_SET_EXAMPLE_INSTALL_DIR_TO_DOT ON)
add_subdirectory(${subdir})
endfunction()
function(qt_internal_add_example_external_project subdir)
set(options "")
set(singleOpts NAME)
set(multiOpts "")
cmake_parse_arguments(PARSE_ARGV 1 arg "${options}" "${singleOpts}" "${multiOpts}")
_qt_internal_get_build_vars_for_external_projects(
CMAKE_DIR_VAR qt_cmake_dir
PREFIXES_VAR qt_prefixes
ADDITIONAL_PACKAGES_PREFIXES_VAR qt_additional_packages_prefixes
)
list(APPEND QT_ADDITIONAL_PACKAGES_PREFIX_PATH "${qt_additional_packages_prefixes}")
set(vars_to_pass_if_defined)
set(var_defs)
if(QT_HOST_PATH OR CMAKE_CROSSCOMPILING)
list(APPEND var_defs
-DCMAKE_TOOLCHAIN_FILE:FILEPATH=${qt_cmake_dir}/qt.toolchain.cmake
)
else()
list(PREPEND CMAKE_PREFIX_PATH ${qt_prefixes})
# Setting CMAKE_SYSTEM_NAME affects CMAKE_CROSSCOMPILING, even if it is
# set to the same as the host, so it should only be set if it is different.
# See https://gitlab.kitware.com/cmake/cmake/-/issues/21744
if(NOT DEFINED CMAKE_TOOLCHAIN_FILE AND
NOT CMAKE_SYSTEM_NAME STREQUAL CMAKE_HOST_SYSTEM_NAME)
list(APPEND vars_to_pass_if_defined CMAKE_SYSTEM_NAME:STRING)
endif()
endif()
# In multi-config mode by default we exclude building tools for configs other than the main one.
# Trying to build an example in a non-default config using the non-installed
# QtFooConfig.cmake files would error out saying moc is not found.
# Make sure to build examples only with the main config.
# When users build an example against an installed Qt they won't have this problem because
# the generated non-main QtFooTargets-$<CONFIG>.cmake file is empty and doesn't advertise
# a tool that is not there.
if(QT_GENERATOR_IS_MULTI_CONFIG)
set(CMAKE_CONFIGURATION_TYPES "${QT_MULTI_CONFIG_FIRST_CONFIG}")
endif()
# We need to pass the modified CXX flags of the parent project so that using sccache works
# properly and doesn't error out due to concurrent access to the pdb files.
# See qt_internal_set_up_config_optimizations_like_in_qmake, "/Zi" "/Z7".
if(MSVC AND QT_FEATURE_msvc_obj_debug_info)
qt_internal_get_enabled_languages_for_flag_manipulation(enabled_languages)
set(configs RELWITHDEBINFO DEBUG)
foreach(lang ${enabled_languages})
foreach(config ${configs})
set(flag_var_name "CMAKE_${lang}_FLAGS_${config}")
list(APPEND vars_to_pass_if_defined "${flag_var_name}:STRING")
endforeach()
endforeach()
endif()
# When cross-compiling for a qemu target in our CI, we source an environment script
# that sets environment variables like CC and CXX. These are parsed by CMake on initial
# configuration to populate the cache vars CMAKE_${lang}_COMPILER.
# If the environment variable specified not only the compiler path, but also a list of flags
# to pass to the compiler, CMake parses those out into a separate CMAKE_${lang}_COMPILER_ARG1
# cache variable. In such a case, we want to ensure that the external project also sees those
# flags.
# Unfortunately we can't do that by simply forwarding CMAKE_${lang}_COMPILER_ARG1 to the EP
# because it breaks the compiler identification try_compile call, it simply doesn't consider
# the cache var. From what I could gather, it's a limitation of try_compile and the list
# of variables it considers for forwarding.
# To fix this case, we ensure not to pass either cache variable, and let the external project
# and its compiler identification try_compile project pick up the compiler and the flags
# from the environment variables instead.
foreach(lang_as_env_var CC CXX OBJC OBJCXX)
if(lang_as_env_var STREQUAL "CC")
set(lang_as_cache_var "C")
else()
set(lang_as_cache_var "${lang_as_env_var}")
endif()
set(lang_env_value "$ENV{${lang_as_env_var}}")
if(lang_env_value
AND CMAKE_${lang_as_cache_var}_COMPILER
AND CMAKE_${lang_as_cache_var}_COMPILER_ARG1)
# The compiler environment variable is set and specifies a list of extra flags, don't
# forward the compiler cache vars and rely on the environment variable to be picked up
# instead.
else()
list(APPEND vars_to_pass_if_defined "CMAKE_${lang_as_cache_var}_COMPILER:STRING")
endif()
endforeach()
unset(lang_as_env_var)
unset(lang_as_cache_var)
unset(lang_env_value)
list(APPEND vars_to_pass_if_defined
CMAKE_BUILD_TYPE:STRING
CMAKE_CONFIGURATION_TYPES:STRING
CMAKE_PREFIX_PATH:STRING
QT_BUILD_CMAKE_PREFIX_PATH:STRING
QT_ADDITIONAL_PACKAGES_PREFIX_PATH:STRING
CMAKE_FIND_ROOT_PATH:STRING
BUILD_SHARED_LIBS:BOOL
CMAKE_OSX_ARCHITECTURES:STRING
CMAKE_OSX_DEPLOYMENT_TARGET:STRING
CMAKE_XCODE_ATTRIBUTE_CODE_SIGNING_ALLOWED:BOOL
CMAKE_XCODE_ATTRIBUTE_ONLY_ACTIVE_ARCH:BOOL
CMAKE_C_COMPILER_LAUNCHER:STRING
CMAKE_CXX_COMPILER_LAUNCHER:STRING
CMAKE_OBJC_COMPILER_LAUNCHER:STRING
CMAKE_OBJCXX_COMPILER_LAUNCHER:STRING
)
foreach(var_with_type IN LISTS vars_to_pass_if_defined)
string(REPLACE ":" ";" key_as_list "${var_with_type}")
list(GET key_as_list 0 var)
if(NOT DEFINED ${var})
continue()
endif()
# Preserve lists
string(REPLACE ";" "$<SEMICOLON>" varForGenex "${${var}}")
list(APPEND var_defs -D${var_with_type}=${varForGenex})
endforeach()
if(QT_INTERNAL_VERBOSE_EXAMPLES)
list(APPEND var_defs -DCMAKE_MESSAGE_LOG_LEVEL:STRING=DEBUG)
list(APPEND var_defs -DCMAKE_AUTOGEN_VERBOSE:BOOL=TRUE)
endif()
set(deps "")
list(REMOVE_DUPLICATES QT_EXAMPLE_DEPENDENCIES)
foreach(dep IN LISTS QT_EXAMPLE_DEPENDENCIES)
if(TARGET ${dep})
list(APPEND deps ${dep})
endif()
endforeach()
set(independent_args)
cmake_policy(PUSH)
if(POLICY CMP0114)
set(independent_args INDEPENDENT TRUE)
cmake_policy(SET CMP0114 NEW)
endif()
# The USES_TERMINAL_BUILD setting forces the build step to the console pool
# when using Ninja. This has two benefits:
#
# - You see build output as it is generated instead of at the end of the
# build step.
# - Only one task can use the console pool at a time, so it effectively
# serializes all example build steps, thereby preventing CPU
# over-commitment.
#
# If the loss of interactivity is not so important, one can allow CPU
# over-commitment for Ninja builds. This may result in better throughput,
# but is not allowed by default because it can make a machine almost
# unusable while a compilation is running.
set(terminal_args USES_TERMINAL_BUILD TRUE)
if(CMAKE_GENERATOR MATCHES "Ninja")
option(QT_BUILD_EXAMPLES_WITH_CPU_OVERCOMMIT
"Allow CPU over-commitment when building examples (Ninja only)"
)
if(QT_BUILD_EXAMPLES_WITH_CPU_OVERCOMMIT)
set(terminal_args)
endif()
endif()
# QT_EXAMPLE_INSTALL_MARKER
# The goal is to install each example project into a directory that keeps the example source dir
# hierarchy, without polluting the example projects with dirty INSTALL_EXAMPLEDIR and
# INSTALL_EXAMPLESDIR usage.
# E.g. ensure qtbase/examples/widgets/widgets/wiggly is installed to
# $qt_example_install_prefix/examples/widgets/widgets/wiggly/wiggly.exe
# $qt_example_install_prefix defaults to ${CMAKE_INSTALL_PREFIX}/${INSTALL_EXAMPLEDIR}
# but can also be set to a custom location.
# This needs to work both:
# - when using ExternalProject to build examples
# - when examples are built in-tree as part of Qt (no ExternalProject).
# The reason we want to support the latter is for nicer IDE integration: a can developer can
# work with a Qt repo and its examples using the same build dir.
#
# In both case we have to ensure examples are not accidentally installed to $qt_prefix/bin or
# similar.
#
# Example projects installation matrix.
# 1) ExternalProject + unclean example install rules (INSTALL_EXAMPLEDIR is set) =>
# use _qt_internal_override_example_install_dir_to_dot + ExternalProject_Add's INSTALL_DIR
# using relative_dir from QT_EXAMPLE_BASE_DIR to example_source_dir
#
# 2) ExternalProject + clean example install rules =>
# use ExternalProject_Add's INSTALL_DIR using relative_dir from QT_EXAMPLE_BASE_DIR to
# example_source_dir, _qt_internal_override_example_install_dir_to_dot would be a no-op
#
# 3) in-tree + unclean example install rules (INSTALL_EXAMPLEDIR is set)
# +
# 4) in-tree + clean example install rules =>
# ensure CMAKE_INSTALL_PREFIX is unset in parent cmake_install.cmake file, set non-cache
# CMAKE_INSTALL_PREFIX using relative_dir from QT_EXAMPLE_BASE_DIR to
# example_source_dir, use _qt_internal_override_example_install_dir_to_dot to ensure
# INSTALL_EXAMPLEDIR does not interfere.
qt_internal_get_example_install_path(example_install_path "${subdir}")
set(ep_binary_dir "${CMAKE_CURRENT_BINARY_DIR}/${subdir}")
set(build_command "")
if(QT_INTERNAL_VERBOSE_EXAMPLES AND CMAKE_GENERATOR MATCHES "Ninja")
set(build_command BUILD_COMMAND "${CMAKE_COMMAND}" --build "." -- -v)
endif()
ExternalProject_Add(${arg_NAME}
EXCLUDE_FROM_ALL TRUE
SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/${subdir}"
PREFIX "${CMAKE_CURRENT_BINARY_DIR}/${subdir}-ep"
STAMP_DIR "${CMAKE_CURRENT_BINARY_DIR}/${subdir}-ep/stamp"
BINARY_DIR "${ep_binary_dir}"
INSTALL_DIR "${example_install_path}"
INSTALL_COMMAND ""
${build_command}
TEST_COMMAND ""
DEPENDS ${deps}
CMAKE_CACHE_ARGS ${var_defs}
-DCMAKE_INSTALL_PREFIX:STRING=<INSTALL_DIR>
-DQT_INTERNAL_SET_EXAMPLE_INSTALL_DIR_TO_DOT:BOOL=TRUE
${terminal_args}
)
# Install the examples when the the user runs 'make install', and not at build time (which is
# the default for ExternalProjects).
install(CODE "\
# Install example from inside ExternalProject into the main build's install prefix.
execute_process(
COMMAND
\"${CMAKE_COMMAND}\" --build \"${ep_binary_dir}\" --target install
)
")
# Force configure step to re-run after we configure the main project
set(reconfigure_check_file ${CMAKE_CURRENT_BINARY_DIR}/reconfigure_${arg_NAME}.txt)
file(TOUCH ${reconfigure_check_file})
ExternalProject_Add_Step(${arg_NAME} reconfigure-check
DEPENDERS configure
DEPENDS ${reconfigure_check_file}
${independent_args}
)
# Create an apk external project step and custom target that invokes the apk target
# within the external project.
# Make the global apk target depend on that custom target.
if(ANDROID)
ExternalProject_Add_Step(${arg_NAME} apk
COMMAND ${CMAKE_COMMAND} --build <BINARY_DIR> --target apk
DEPENDEES configure
EXCLUDE_FROM_MAIN YES
${terminal_args}
)
ExternalProject_Add_StepTargets(${arg_NAME} apk)
if(TARGET apk)
add_dependencies(apk ${arg_NAME}-apk)
endif()
endif()
cmake_policy(POP)
string(TOLOWER ${PROJECT_NAME} project_name_lower)
add_dependencies(examples_${project_name_lower} ${arg_NAME})
endfunction()
function(qt_internal_install_example_sources subdir)
set(options "")
set(single_args NAME REPO_NAME)
set(multi_args "")
cmake_parse_arguments(PARSE_ARGV 1 arg "${options}" "${single_args}" "${multi_args}")
qt_internal_get_examples_sources_install_path(example_install_path "${subdir}")
# The trailing slash is important to avoid duplicate nested directory names.
set(example_source_dir "${subdir}/")
# Allow controlling whether sources should be part of the default install target.
if(QT_INSTALL_EXAMPLES_SOURCES_BY_DEFAULT)
set(exclude_from_all "")
else()
set(exclude_from_all "EXCLUDE_FROM_ALL")
endif()
# Create an install component for all example sources. Can also be part of the default
# install target if EXCLUDE_FROM_ALL is not passed.
install(
DIRECTORY "${example_source_dir}"
DESTINATION "${example_install_path}"
COMPONENT "examples_sources"
USE_SOURCE_PERMISSIONS
${exclude_from_all}
)
# Also create a specific install component just for this repo's examples.
install(
DIRECTORY "${example_source_dir}"
DESTINATION "${example_install_path}"
COMPONENT "examples_sources_${arg_REPO_NAME}"
USE_SOURCE_PERMISSIONS
EXCLUDE_FROM_ALL
)
# Also create a specific install component just for the current example's sources.
install(
DIRECTORY "${example_source_dir}"
DESTINATION "${example_install_path}"
COMPONENT "examples_sources_${arg_NAME}"
USE_SOURCE_PERMISSIONS
EXCLUDE_FROM_ALL
)
endfunction()
if ("STANDALONE_TEST" IN_LIST Qt6BuildInternals_FIND_COMPONENTS)
include(${CMAKE_CURRENT_LIST_DIR}/QtStandaloneTestTemplateProject/Main.cmake)
if (NOT PROJECT_VERSION_MAJOR)
get_property(_qt_major_version TARGET ${QT_CMAKE_EXPORT_NAMESPACE}::Core PROPERTY INTERFACE_QT_MAJOR_VERSION)
set(PROJECT_VERSION ${Qt${_qt_major_version}Core_VERSION})
string(REPLACE "." ";" _qt_core_version_list ${PROJECT_VERSION})
list(GET _qt_core_version_list 0 PROJECT_VERSION_MAJOR)
list(GET _qt_core_version_list 1 PROJECT_VERSION_MINOR)
list(GET _qt_core_version_list 2 PROJECT_VERSION_PATCH)
endif()
endif()
function(qt_internal_static_link_order_test)
# The CMake versions greater than 3.21 take care about the resource object files order in a
# linker line, it's expected that all object files are located at the beginning of the linker
# line.
# No need to run the test.
if(CMAKE_VERSION VERSION_LESS 3.21)
__qt_internal_check_link_order_matters(link_order_matters)
if(link_order_matters)
set(summary_message "no")
else()
set(summary_message "yes")
endif()
else()
set(summary_message "yes")
endif()
qt_configure_add_summary_entry(TYPE "message"
ARGS "Linker can resolve circular dependencies"
MESSAGE "${summary_message}"
)
endfunction()
function(qt_internal_check_cmp0099_available)
# Don't care about CMP0099 in CMake versions greater than or equal to 3.21
if(CMAKE_VERSION VERSION_GREATER_EQUAL 3.21)
return()
endif()
__qt_internal_check_cmp0099_available(result)
if(result)
set(summary_message "yes")
else()
set(summary_message "no")
endif()
qt_configure_add_summary_entry(TYPE "message"
ARGS "CMake policy CMP0099 is supported"
MESSAGE "${summary_message}"
)
endfunction()
function(qt_internal_run_common_config_tests)
qt_configure_add_summary_section(NAME "Common build options")
qt_internal_static_link_order_test()
qt_internal_check_cmp0099_available()
qt_configure_end_summary_section()
endfunction()
# It is used in QtWebEngine to replace the REALPATH with ABSOLUTE path, which is
# useful for building Qt in Homebrew.
function(qt_internal_get_filename_path_mode out_var)
set(mode REALPATH)
if(APPLE AND QT_ALLOW_SYMLINK_IN_PATHS)
set(mode ABSOLUTE)
endif()
set(${out_var} ${mode} PARENT_SCOPE)
endfunction()
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