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# The real minimum version will be checked by the qtbase project.
# 3.16 is the absolute minimum though.
cmake_minimum_required(VERSION 3.16...3.21)
# set QT_SUPERBUILD early, so that qtbase/.cmake.conf can check it
set(QT_SUPERBUILD TRUE)
# Include qtbase's .cmake.conf for access to QT_REPO_MODULE_VERSION
set(__qt6_qtbase_src_path "${CMAKE_CURRENT_SOURCE_DIR}/qtbase")
include("${__qt6_qtbase_src_path}/.cmake.conf")
include("${__qt6_qtbase_src_path}/cmake/QtBaseTopLevelHelpers.cmake")
qt_internal_top_level_setup_autodetect()
project(Qt
VERSION "${QT_REPO_MODULE_VERSION}"
DESCRIPTION "Qt Libraries"
HOMEPAGE_URL "https://qt.io/"
LANGUAGES CXX C ASM
)
qt_internal_top_level_setup_after_project()
list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
qt_internal_top_level_setup_cmake_module_path()
include(QtTopLevelHelpers)
include(ECMOptionalAddSubdirectory)
qt_internal_top_level_before_build_submodules()
qt_internal_find_modules(known_submodules)
# Get submodule list if not already defined
if(NOT QT_BUILD_SUBMODULES)
if(DEFINED ENV{QT_BUILD_SUBMODULES})
set(QT_BUILD_SUBMODULES "$ENV{QT_BUILD_SUBMODULES}")
else()
set(QT_BUILD_SUBMODULES "${known_submodules}")
endif()
endif()
set(QT_BUILD_SUBMODULES "${QT_BUILD_SUBMODULES}" CACHE STRING "Submodules to build")
# Preliminary check if module should be skipped since -skip <module> or BUILD_<module>
# are provided.
set(explicitly_skipped_modules "")
foreach(module IN LISTS known_submodules)
if(DEFINED BUILD_${module} AND NOT BUILD_${module})
list(APPEND explicitly_skipped_modules ${module})
endif()
endforeach()
foreach(module IN LISTS QT_BUILD_SUBMODULES)
if(NOT EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${module}/CMakeLists.txt)
message(FATAL_ERROR
"Module '${module}' cannot be found. Please double-check the "
"spelling and try again. Or run\n"
"`./configure -init-submodules -submodules ${module}` "
"to clone the submodule and its dependencies.")
endif()
endforeach()
qt_internal_sort_module_dependencies("${QT_BUILD_SUBMODULES}" QT_BUILD_SUBMODULES
SKIP_MODULES ${explicitly_skipped_modules})
foreach(module IN LISTS QT_BUILD_SUBMODULES)
# Check for unmet dependencies
if(NOT DEFINED BUILD_${module} OR BUILD_${module})
message(STATUS "Checking dependencies of submodule '${module}'")
get_property(required_deps GLOBAL PROPERTY QT_REQUIRED_DEPS_FOR_${module})
get_property(dependencies GLOBAL PROPERTY QT_DEPS_FOR_${module})
foreach(dep IN LISTS dependencies)
if (dep STREQUAL "qtbase")
# Always available skip
continue()
endif()
set(required FALSE)
if(dep IN_LIST required_deps)
set(required TRUE)
endif()
set(error_reason "")
if(NOT EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/${dep}/CMakeLists.txt")
set(error_reason "${dep}'s CMakeLists.txt couldn't be found")
elseif(DEFINED BUILD_${dep} AND NOT BUILD_${dep})
set(error_reason "building '${dep}' was explicitly disabled")
endif()
if(NOT error_reason STREQUAL "")
if(required)
if(QT_INTERNAL_CALLED_FROM_CONFIGURE)
set(skip_argument "-skip ${module}")
else()
set(skip_argument "-DBUILD_${module}=OFF")
endif()
message(FATAL_ERROR "Module '${module}' depends on '${dep}', "
"but ${error_reason}.\n"
"Note: Use '${skip_argument}' to exclude it from the build.")
else()
message(STATUS "Skipping optional dependency '${dep}' of '${module}', "
"because ${error_reason}.")
endif()
endif()
endforeach()
endif()
endforeach()
if(NOT DEFINED CMAKE_MESSAGE_CONTEXT_SHOW)
set(CMAKE_MESSAGE_CONTEXT_SHOW TRUE)
endif()
foreach(module IN LISTS QT_BUILD_SUBMODULES)
message(STATUS "Configuring submodule '${module}'")
ecm_optional_add_subdirectory("${module}")
qt_internal_top_level_after_add_subdirectory()
endforeach()
qt_internal_top_level_end()
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