dcaab5eb8d
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>