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get_filename_component ---------------------- Get a specific component of a full filename. .. versionchanged:: 3.20 This command been superseded by :command:`cmake_path` command, except ``REALPATH`` now offered by :ref:`file(REAL_PATH) <REAL_PATH>` command and ``PROGRAM`` now available in :command:`separate_arguments(PROGRAM)` command. .. code-block:: cmake get_filename_component(<var> <FileName> <mode> [CACHE]) Sets ``<var>`` to a component of ``<FileName>``, where ``<mode>`` is one of: :: DIRECTORY = Directory without file name NAME = File name without directory EXT = File name longest extension (.b.c from d/a.b.c) NAME_WE = File name with neither the directory nor the longest extension LAST_EXT = File name last extension (.c from d/a.b.c) NAME_WLE = File name with neither the directory nor the last extension PATH = Legacy alias for DIRECTORY (use for CMake <= 2.8.11) .. versionadded:: 3.14 Added the ``LAST_EXT`` and ``NAME_WLE`` modes. Paths are returned with forward slashes and have no trailing slashes. If the optional ``CACHE`` argument is specified, the result variable is added to the cache. .. code-block:: cmake get_filename_component(<var> <FileName> <mode> [BASE_DIR <dir>] [CACHE]) .. versionadded:: 3.4 Sets ``<var>`` to the absolute path of ``<FileName>``, where ``<mode>`` is one of: :: ABSOLUTE = Full path to file REALPATH = Full path to existing file with symlinks resolved If the provided ``<FileName>`` is a relative path, it is evaluated relative to the given base directory ``<dir>``. If no base directory is provided, the default base directory will be :variable:`CMAKE_CURRENT_SOURCE_DIR`. Paths are returned with forward slashes and have no trailing slashes. If the optional ``CACHE`` argument is specified, the result variable is added to the cache. .. code-block:: cmake get_filename_component(<var> <FileName> PROGRAM [PROGRAM_ARGS <arg_var>] [CACHE]) The program in ``<FileName>`` will be found in the system search path or left as a full path. If ``PROGRAM_ARGS`` is present with ``PROGRAM``, then any command-line arguments present in the ``<FileName>`` string are split from the program name and stored in ``<arg_var>``. This is used to separate a program name from its arguments in a command line string.