From Get docs
Cmake/docs/3.21/command/get source file property


Get a property for a source file.

get_source_file_property(<variable> <file>
                         [DIRECTORY <dir> | TARGET_DIRECTORY <target>]

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 define_property()). Non-inherited properties will set variable to NOTFOUND, whereas inherited properties will search the relevant parent scope as described for the 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.

New in version 3.18: Directory scope can be overridden with one of the following sub-options:

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 add_subdirectory() or <dir> being the top level source directory. Relative paths are treated as relative to the current source directory.
The source file property will be read from the directory scope in which <target> was created (<target> must therefore already exist).

Use 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 LOCATION.

See also the more general get_property() command.


The GENERATED source file property may be globally visible. See its documentation for details.

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