CMAKE_CXX_STANDARD_REQUIRED

Default value for CXX_STANDARD_REQUIRED property of targets.

This variable is used to initialize the CXX_STANDARD_REQUIRED property on all targets. See that target property for additional information.

See the cmake-compile-features(7) manual for information on compile features and a list of supported compilers.

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Licensed under the BSD 3-clause License.
https://cmake.org/cmake/help/v3.5/variable/CMAKE_CXX_STANDARD_REQUIRED.html