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++ # Copyright (C) 2023 The Qt Company Ltd.
++ # SPDX-License-Identifier: BSD-3-Clause
++
++ # Check whether no unity build is requested where it is disabled by default.
++ function(_qt_internal_validate_no_unity_build prefix)
++ if(${prefix}_NO_UNITY_BUILD OR ${prefix}_NO_UNITY_BUILD_SOURCES)
++ message(WARNING
++ "Unity build is disabled by default for this target, and its sources. "
++ "You may remove the NO_UNITY_BUILD and/or NO_UNITY_BUILD_SOURCES arguments.")
++ endif()
++ endfunction()
++
++ function(qt_update_ignore_unity_build_sources target sources)
++ if(sources)
++ # We need to add the TARGET_DIRECTORY scope for targets that have qt_internal_extend_target
++ # calls in different subdirectories, like in qtgraphs.
++ set(scope_args)
++ if(CMAKE_VERSION VERSION_GREATER_EQUAL "3.18")
++ set(scope_args TARGET_DIRECTORY ${target})
++ endif()
++ set_source_files_properties(${sources} ${scope_args}
++ PROPERTIES SKIP_UNITY_BUILD_INCLUSION ON)
++ endif()
++ endfunction()