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target_compile_options
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----------------------
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Add compile options to a target.
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.. code-block:: cmake
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target_compile_options(<target> [BEFORE]
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<INTERFACE|PUBLIC|PRIVATE> [items1...]
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[<INTERFACE|PUBLIC|PRIVATE> [items2...] ...])
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Adds options to the :prop_tgt:`COMPILE_OPTIONS` or
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:prop_tgt:`INTERFACE_COMPILE_OPTIONS` target properties. These options
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are used when compiling the given ``<target>``, which must have been
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created by a command such as :command:`add_executable` or
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:command:`add_library` and must not be an :ref:`ALIAS target <Alias Targets>`.
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.. note::
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These options are not used when linking the target.
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See the :command:`target_link_options` command for that.
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Arguments
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^^^^^^^^^
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If ``BEFORE`` is specified, the content will be prepended to the property
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instead of being appended. See policy :policy:`CMP0101` which affects
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whether ``BEFORE`` will be ignored in certain cases.
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The ``INTERFACE``, ``PUBLIC`` and ``PRIVATE`` keywords are required to
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specify the :ref:`scope <Target Command Scope>` of the following arguments.
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``PRIVATE`` and ``PUBLIC`` items will populate the :prop_tgt:`COMPILE_OPTIONS`
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property of ``<target>``. ``PUBLIC`` and ``INTERFACE`` items will populate the
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:prop_tgt:`INTERFACE_COMPILE_OPTIONS` property of ``<target>``.
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The following arguments specify compile options. Repeated calls for the same
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``<target>`` append items in the order called.
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.. versionadded:: 3.11
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Allow setting ``INTERFACE`` items on :ref:`IMPORTED targets <Imported Targets>`.
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.. |command_name| replace:: ``target_compile_options``
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.. include:: GENEX_NOTE.txt
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.. include:: OPTIONS_SHELL.txt
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See Also
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^^^^^^^^
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* This command can be used to add any options. However, for adding
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preprocessor definitions and include directories it is recommended
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to use the more specific commands :command:`target_compile_definitions`
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and :command:`target_include_directories`.
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* For directory-wide settings, there is the command :command:`add_compile_options`.
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* For file-specific settings, there is the source file property :prop_sf:`COMPILE_OPTIONS`.
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* This command adds compile options for all languages in a target.
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Use the :genex:`COMPILE_LANGUAGE` generator expression to specify
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per-language compile options.
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* :command:`target_compile_features`
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* :command:`target_link_libraries`
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* :command:`target_link_directories`
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* :command:`target_link_options`
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* :command:`target_precompile_headers`
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* :command:`target_sources`
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* :variable:`CMAKE_<LANG>_FLAGS` and :variable:`CMAKE_<LANG>_FLAGS_<CONFIG>`
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add language-wide flags passed to all invocations of the compiler.
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This includes invocations that drive compiling and those that drive linking.
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