SOURCE_DIRS_ ------------------ .. versionadded:: 4.4 Semicolon-separated list of base directories of the target's ```` source set, which has the set type ``SOURCES``. The property supports :manual:`generator expressions `. This property is normally only set by :command:`target_sources(FILE_SET)` rather than being manipulated directly. See :prop_tgt:`SOURCE_DIRS` for the list of base directories in the default source set. See :prop_tgt:`SOURCE_SETS` for the file set names of all source sets.