文件操作 - OBJCXX_STANDARD_REQUIRED.rst
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文件: /usr/share/cmake3/Help/prop_tgt/OBJCXX_STANDARD_REQUIRED.rst
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OBJCXX_STANDARD_REQUIRED ------------------------ Boolean describing whether the value of :prop_tgt:`OBJCXX_STANDARD` is a requirement. If this property is set to ``ON``, then the value of the :prop_tgt:`OBJCXX_STANDARD` target property is treated as a requirement. If this property is ``OFF`` or unset, the :prop_tgt:`OBJCXX_STANDARD` target property is treated as optional and may "decay" to a previous standard if the requested is not available. If the property is not set, and the project has set the :prop_tgt:`CXX_STANDARD_REQUIRED`, the value of :prop_tgt:`CXX_STANDARD_REQUIRED` is set for :prop_tgt:`OBJCXX_STANDARD_REQUIRED`. See the :manual:`cmake-compile-features(7)` manual for information on compile features and a list of supported compilers. This property is initialized by the value of the :variable:`CMAKE_OBJCXX_STANDARD_REQUIRED` variable if it is set when a target is created.
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