qtgraphs defines a target in one directory, and then calls qt_internal_extend_target with NO_UNITY_BUILD_SOURCES in another subdirectory scope. That in turn calls set_source_files_properties but only for the latter subdirectory, and not the main target directory. Because CMake has per-directory-scope source file properties, the 'no unity sources' option was effectively ignored. When using CMake 3.18, make sure to specify the TARGET_DIRECTORY option so that the source file properties are added to the scope of the defining target. Pick-to: 6.6 6.5 Change-Id: I4190d4073a2955aa7053b5faaaa57f683bc768a2 Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io> (cherry picked from commit 081e50d768114aeeb8f0d284989986d4debc6ec3) Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
25 lines
1.0 KiB
CMake
25 lines
1.0 KiB
CMake
# Copyright (C) 2023 The Qt Company Ltd.
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# SPDX-License-Identifier: BSD-3-Clause
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# Check whether no unity build is requested where it is disabled by default.
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function(_qt_internal_validate_no_unity_build prefix)
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if(${prefix}_NO_UNITY_BUILD OR ${prefix}_NO_UNITY_BUILD_SOURCES)
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message(WARNING
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"Unity build is disabled by default for this target, and its sources. "
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"You may remove the NO_UNITY_BUILD and/or NO_UNITY_BUILD_SOURCES arguments.")
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endif()
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endfunction()
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function(qt_update_ignore_unity_build_sources target sources)
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if(sources)
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# We need to add the TARGET_DIRECTORY scope for targets that have qt_internal_extend_target
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# calls in different subdirectories, like in qtgraphs.
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set(scope_args)
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if(CMAKE_VERSION VERSION_GREATER_EQUAL "3.18")
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set(scope_args TARGET_DIRECTORY ${target})
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endif()
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set_source_files_properties(${sources} ${scope_args}
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PROPERTIES SKIP_UNITY_BUILD_INCLUSION ON)
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endif()
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endfunction()
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