CXX_MODULE_SET_ --------------------- .. versionadded:: 3.28 Semicolon-separated list of files in the target's ```` C++ module set, which has the set type ``CXX_MODULES``. If any of the paths are relative, they are computed relative to the target's source directory. 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_SET` for the list of files in the default C++ module set. See :prop_tgt:`CXX_MODULE_SETS` for the file set names of all C++ module sets.