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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")
# Run platform auto-detection /before/ the first project() call and thus
# before the toolchain file is loaded.
# Don't run auto-detection when doing standalone tests. In that case, the detection
# results are taken from either QtBuildInternals or the qt.toolchain.cmake file.
if(NOT QT_BUILD_STANDALONE_TESTS)
include("${__qt6_qtbase_src_path}/cmake/QtAutoDetect.cmake")
endif()
project(Qt
VERSION "${QT_REPO_MODULE_VERSION}"
DESCRIPTION "Qt Libraries"
HOMEPAGE_URL "https://qt.io/"
LANGUAGES CXX C ASM
)
# Required so we can call ctest from the root build directory
enable_testing()
set(qt_module_prop_prefix "__qt_prop_")
list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
if (NOT QT_BUILD_STANDALONE_TESTS)
list(APPEND CMAKE_MODULE_PATH "${__qt6_qtbase_src_path}/cmake")
list(APPEND CMAKE_MODULE_PATH
"${__qt6_qtbase_src_path}/cmake/3rdparty/extra-cmake-modules/find-modules")
list(APPEND CMAKE_MODULE_PATH "${__qt6_qtbase_src_path}/cmake/3rdparty/kwin")
endif()
include(QtTopLevelHelpers)
include(ECMOptionalAddSubdirectory)
# Also make sure the CMake config files do not recreate the already-existing targets
if (NOT QT_BUILD_STANDALONE_TESTS)
set(QT_NO_CREATE_TARGETS TRUE)
endif()
# Get submodule list if not already defined
if(NOT QT_BUILD_SUBMODULES)
if(DEFINED ENV{QT_BUILD_SUBMODULES})
set(QT_BUILD_SUBMODULES "$ENV{QT_BUILD_SUBMODULES}")
else()
qt_internal_find_modules(QT_BUILD_SUBMODULES)
endif()
endif()
set(QT_BUILD_SUBMODULES "${QT_BUILD_SUBMODULES}" CACHE STRING "Submodules to build")
foreach(module IN LISTS QT_BUILD_SUBMODULES)
if(NOT EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/${module}/CMakeLists.txt)
message(FATAL_ERROR
"Module '${module}' cannot be found. Please double-check the "
"spelling and try again. Or run `./init-repository` to get "
"the submodules.")
endif()
endforeach()
qt_internal_sort_module_dependencies("${QT_BUILD_SUBMODULES}" QT_BUILD_SUBMODULES)
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 '${dep}' was explicitly disabled")
endif()
if(NOT error_reason STREQUAL "")
if(required)
message(FATAL_ERROR "Module '${module}' depends on '${dep}', "
"but ${error_reason}.\n"
"Note: Use '-skip ${module}' to exclude it from the build.")
else()
message(STATUS "Skipping optional dependency '${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("${module}")
if(module STREQUAL "qtbase")
if (NOT QT_BUILD_STANDALONE_TESTS)
list(APPEND CMAKE_PREFIX_PATH "${QtBase_BINARY_DIR}/${INSTALL_LIBDIR}/cmake")
list(APPEND CMAKE_FIND_ROOT_PATH "${QtBase_BINARY_DIR}")
endif()
endif()
endforeach()
if(NOT QT_BUILD_STANDALONE_TESTS)
# Display a summary of everything
include(QtBuildInformation)
include(QtPlatformSupport)
qt_print_feature_summary()
qt_print_build_instructions()
endif()
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