73 lines
2.6 KiB
ReStructuredText
73 lines
2.6 KiB
ReStructuredText
get_filename_component
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----------------------
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Get a specific component of a full filename.
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.. versionchanged:: 3.20
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This command has been superseded by the :command:`cmake_path` command, except
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for ``REALPATH``, which is now offered by :command:`file(REAL_PATH)`, and
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``PROGRAM``, now available in :command:`separate_arguments(PROGRAM)`.
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.. versionchanged:: 3.24
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The undocumented feature offering the capability to query the ``Windows``
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registry is superseded by
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:ref:`cmake_host_system_information(QUERY WINDOWS_REGISTRY)<Query Windows registry>`
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command.
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.. code-block:: cmake
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get_filename_component(<var> <FileName> <mode> [CACHE])
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Sets ``<var>`` to a component of ``<FileName>``, where ``<mode>`` is one of:
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* ``DIRECTORY`` - directory without file name.
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* ``NAME`` - file name without directory.
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* ``EXT`` - file name longest extension (``.b.c`` from ``d/a.b.c``).
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* ``NAME_WE`` - file name with neither the directory nor the longest extension.
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* ``LAST_EXT`` - file name last extension (``.c`` from ``d/a.b.c``).
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* ``NAME_WLE`` - file name with neither the directory nor the last extension.
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* ``PATH`` - legacy alias for ``DIRECTORY`` (use for CMake <= 2.8.11).
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.. versionadded:: 3.14
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Added the ``LAST_EXT`` and ``NAME_WLE`` modes.
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Paths are returned with forward slashes and have no trailing slashes.
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If the optional ``CACHE`` argument is specified, the result variable is
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added to the cache.
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.. code-block:: cmake
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get_filename_component(<var> <FileName> <mode> [BASE_DIR <dir>] [CACHE])
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.. versionadded:: 3.4
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Sets ``<var>`` to the absolute path of ``<FileName>``, where ``<mode>`` is one
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of:
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* ``ABSOLUTE`` - full path to file.
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* ``REALPATH`` - full path to existing file with symlinks resolved.
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If the provided ``<FileName>`` is a relative path, it is evaluated relative
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to the given base directory ``<dir>``. If no base directory is
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provided, the default base directory will be
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:variable:`CMAKE_CURRENT_SOURCE_DIR`.
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Paths are returned with forward slashes and have no trailing slashes. If the
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optional ``CACHE`` argument is specified, the result variable is added to the
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cache.
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.. code-block:: cmake
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get_filename_component(<var> <FileName> PROGRAM [PROGRAM_ARGS <arg_var>] [CACHE])
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The program in ``<FileName>`` will be found in the system search path or
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left as a full path. If ``PROGRAM_ARGS`` is present with ``PROGRAM``, then
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any command-line arguments present in the ``<FileName>`` string are split
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from the program name and stored in ``<arg_var>``. This is used to
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separate a program name from its arguments in a command line string.
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See Also
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^^^^^^^^
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* :command:`cmake_path`
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