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AUTOGEN_ORIGIN_DEPENDS
----------------------
.. versionadded:: 3.14
Switch for forwarding origin target dependencies to the corresponding
:ref:`<ORIGIN>_autogen` target.
.. note::
If Qt 5.15 or later is used and the generator is either :generator:`Ninja`
or :ref:`Makefile Generators`, origin target dependencies are forwarded to
the :ref:`<ORIGIN>_autogen_timestamp_deps` target instead of
:ref:`<ORIGIN>_autogen`
Targets which have their :prop_tgt:`AUTOMOC` or :prop_tgt:`AUTOUIC` property
``ON`` have a corresponding :ref:`<ORIGIN>_autogen` target which generates
``moc`` and ``uic`` files. As this :ref:`<ORIGIN>_autogen` target is created at
generate-time, it is not possible to define dependencies of it using
e.g. :command:`add_dependencies`. Instead the ``AUTOGEN_ORIGIN_DEPENDS``
target property decides whether the origin target dependencies should be
forwarded to the :ref:`<ORIGIN>_autogen` target or not.
By default ``AUTOGEN_ORIGIN_DEPENDS`` is initialized from
:variable:`CMAKE_AUTOGEN_ORIGIN_DEPENDS` which is ``ON`` by default.
In total the dependencies of the :ref:`<ORIGIN>_autogen` target are composed
from
- forwarded origin target dependencies
(enabled by default via ``AUTOGEN_ORIGIN_DEPENDS``)
- additional user defined dependencies from :prop_tgt:`AUTOGEN_TARGET_DEPENDS`
See the :manual:`cmake-qt(7)` manual for more information on using CMake
with Qt.
.. note::
Disabling ``AUTOGEN_ORIGIN_DEPENDS`` is useful to avoid building of
origin target dependencies when building the :ref:`<ORIGIN>_autogen` target
only. This is especially interesting when a
:variable:`global autogen target <CMAKE_GLOBAL_AUTOGEN_TARGET>` is enabled.
When the :ref:`<ORIGIN>_autogen` target doesn't require all the origin target's
dependencies, and ``AUTOGEN_ORIGIN_DEPENDS`` is disabled, it might be
necessary to extend :prop_tgt:`AUTOGEN_TARGET_DEPENDS` to add missing
dependencies.
|
