CMake/Help/policy/CMP0160.rst

CMP0160
-------

.. versionadded:: 3.29

More read-only target properties now error when trying to set them.

The :command:`set_target_properties` and :command:`set_property` commands
are intended to error out on all read-only properties. However, CMake 3.28 and
below only did this for the following properties:

* :prop_tgt:`HEADER_SETS`
* :prop_tgt:`INTERFACE_HEADER_SETS`
* :prop_tgt:`IMPORTED_GLOBAL`
* :prop_tgt:`MANUALLY_ADDED_DEPENDENCIES`
* :prop_tgt:`NAME`
* :prop_tgt:`TYPE`

This policy enforces the read-only nature of the following target properties:

* :prop_tgt:`ALIAS_GLOBAL`
* :prop_tgt:`BINARY_DIR`
* :prop_tgt:`CXX_MODULE_SETS`
* :prop_tgt:`IMPORTED`
* :prop_tgt:`INTERFACE_CXX_MODULE_SETS`
* :prop_tgt:`LOCATION`
* :prop_tgt:`LOCATION_<CONFIG>`
* :prop_tgt:`SOURCE_DIR`

The ``OLD`` behavior for this policy is to only error out for the properties
:prop_tgt:`MANUALLY_ADDED_DEPENDENCIES`, :prop_tgt:`NAME`, and :prop_tgt:`TYPE`.
The ``NEW`` behavior for this policy is to error out on all target properties
that are documented as read-only.

.. |INTRODUCED_IN_CMAKE_VERSION| replace:: 3.29
.. |WARNS_OR_DOES_NOT_WARN| replace:: warns
.. include:: include/STANDARD_ADVICE.rst

.. include:: include/DEPRECATED.rst