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34 lines
1.3 KiB
34 lines
1.3 KiB
<LANG>_STANDARD
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---------------
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The variations are:
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* :prop_tgt:`C_STANDARD`
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* :prop_tgt:`CXX_STANDARD`
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* :prop_tgt:`CUDA_STANDARD`
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* :prop_tgt:`HIP_STANDARD`
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* :prop_tgt:`OBJC_STANDARD`
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* :prop_tgt:`OBJCXX_STANDARD`
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These properties specify language standard versions which are requested. When a
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newer standard is specified than is supported by the compiler, then it will
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fallback to the latest supported standard. This "decay" behavior may be
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controlled with the :prop_tgt:`<LANG>_STANDARD_REQUIRED` target property.
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Note that the actual language standard used may be higher than that specified
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by ``<LANG>_STANDARD``, regardless of the value of
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:prop_tgt:`<LANG>_STANDARD_REQUIRED`. In particular,
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:ref:`usage requirements <Target Usage Requirements>` or the use of
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:manual:`compile features <cmake-compile-features(7)>` can raise the required
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language standard above what ``<LANG>_STANDARD`` specifies.
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These properties are initialized by the value of the
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:variable:`CMAKE_<LANG>_STANDARD` variable if it is set when a target is
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created.
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For supported values and CMake versions see the respective pages.
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To control compiler-specific extensions see :prop_tgt:`<LANG>_EXTENSIONS`.
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See the :manual:`cmake-compile-features(7)` manual for information on
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compile features and a list of supported compilers.
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