Get a property of
get_directory_property(<variable> [DIRECTORY <dir>] <prop-name>)
Stores a property of directory scope in the named
DIRECTORY argument specifies another directory from which
to retrieve the property value instead of the current directory.
Relative paths are treated as relative to the
current source directory. CMake must already know about the directory,
either by having added it through a call to
or being the top level directory.
New in version 3.19:
<dir> may reference a binary directory.
If the property is not defined for the nominated directory scope,
an empty string is returned. In the case of
if the property is not found for the nominated directory scope,
the search will chain to a parent scope as described for the
get_directory_property(<variable> [DIRECTORY <dir>] DEFINITION <var-name>)
Get a variable definition from a directory. This form is useful to get a variable definition from another directory.