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get_source_file_property
------------------------
Get a property for a source file.
.. code-block:: cmake
get_source_file_property(<variable> <file>
[DIRECTORY <dir> | TARGET_DIRECTORY <target>]
<property>)
Gets a property from a source file. The value of the property is
stored in the specified ``<variable>``. If the source property is not found,
the behavior depends on whether it has been defined to be an ``INHERITED``
property or not (see :command:`define_property`). Non-inherited properties
will set ``variable`` to ``NOTFOUND``, whereas inherited properties will search
the relevant parent scope as described for the :command:`define_property`
command and if still unable to find the property, ``variable`` will be set to
an empty string.
By default, the source file's property will be read from the current source
directory's scope.
.. versionadded:: 3.18
Directory scope can be overridden with one of the following sub-options:
``DIRECTORY <dir>``
The source file property will be read from the ``<dir>`` directory's
scope. CMake must already know about that source directory, either by
having added it through a call to :command:`add_subdirectory` or ``<dir>``
being the top level source directory. Relative paths are treated as
relative to the current source directory.
``TARGET_DIRECTORY <target>``
The source file property will be read from the directory scope in which
``<target>`` was created (``<target>`` must therefore already exist).
Use :command:`set_source_files_properties` to set property values. Source
file properties usually control how the file is built. One property that is
always there is :prop_sf:`LOCATION`.
See also the more general :command:`get_property` command.
.. note::
The :prop_sf:`GENERATED` source file property may be globally visible.
See its documentation for details.