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target_compile_features
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-----------------------
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Add expected compiler features to a target.
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::
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target_compile_features(<target> <PRIVATE|PUBLIC|INTERFACE> <feature> [...])
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Specify compiler features required when compiling a given target. If the
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feature is not listed in the :variable:`CMAKE_C_COMPILE_FEATURES` variable
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or :variable:`CMAKE_CXX_COMPILE_FEATURES` variable,
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then an error will be reported by CMake. If the use of the feature requires
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an additional compiler flag, such as ``-std=gnu++11``, the flag will be added
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automatically.
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The ``INTERFACE``, ``PUBLIC`` and ``PRIVATE`` keywords are required to
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specify the scope of the features. ``PRIVATE`` and ``PUBLIC`` items will
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populate the :prop_tgt:`COMPILE_FEATURES` property of ``<target>``.
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``PUBLIC`` and ``INTERFACE`` items will populate the
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:prop_tgt:`INTERFACE_COMPILE_FEATURES` property of ``<target>``. Repeated
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calls for the same ``<target>`` append items.
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The named ``<target>`` must have been created by a command such as
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:command:`add_executable` or :command:`add_library` and must not be
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an ``IMPORTED`` target.
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Arguments to ``target_compile_features`` may use "generator expressions"
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with the syntax ``$<...>``.
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See the :manual:`cmake-generator-expressions(7)` manual for available
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expressions. See the :manual:`cmake-compile-features(7)` manual for
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information on compile features and a list of supported compilers.
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