CXX_MODULE_HEADER_UNIT_SETS
---------------------------

.. note ::

  Experimental. Gated by ``CMAKE_EXPERIMENTAL_CXX_MODULE_CMAKE_API``

Read-only list of the target's ``PRIVATE`` and ``PUBLIC`` C++ module header
sets (i.e. all file sets with the type ``CXX_MODULE_HEADER_UNITS``). Files
listed in these file sets are treated as source files for the purpose of IDE
integration.

C++ module header sets may be defined using the :command:`target_sources`
command ``FILE_SET`` option with type ``CXX_MODULE_HEADER_UNITS``.

See also :prop_tgt:`CXX_MODULE_HEADER_UNIT_SET_<NAME>`,
:prop_tgt:`CXX_MODULE_HEADER_UNIT_SET` and
:prop_tgt:`INTERFACE_CXX_MODULE_HEADER_UNIT_SETS`.
