CXX_MODULE_DIRS --------------- .. versionadded:: 3.25 .. note :: Experimental. Gated by ``CMAKE_EXPERIMENTAL_CXX_MODULE_CMAKE_API`` Semicolon-separated list of base directories of the target's default C++ module set (i.e. the file set with name and type ``CXX_MODULES``). 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:`CXX_MODULE_DIRS_` for the list of base directories in other C++ module sets.