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Diffstat (limited to 'share/cmake-3.18/Help/policy/CMP0067.rst')
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diff --git a/share/cmake-3.18/Help/policy/CMP0067.rst b/share/cmake-3.18/Help/policy/CMP0067.rst new file mode 100644 index 0000000..f802787 --- /dev/null +++ b/share/cmake-3.18/Help/policy/CMP0067.rst @@ -0,0 +1,37 @@ +CMP0067 +------- + +Honor language standard in :command:`try_compile` source-file signature. + +The :command:`try_compile` source file signature is intended to allow +callers to check whether they will be able to compile a given source file +with the current toolchain. In order to match compiler behavior, any +language standard mode should match. However, CMake 3.7 and below did not +do this. CMake 3.8 and above prefer to honor the language standard settings +for ``C``, ``CXX`` (C++), and ``CUDA`` using the values of the variables: + +* :variable:`CMAKE_C_STANDARD` +* :variable:`CMAKE_C_STANDARD_REQUIRED` +* :variable:`CMAKE_C_EXTENSIONS` +* :variable:`CMAKE_CXX_STANDARD` +* :variable:`CMAKE_CXX_STANDARD_REQUIRED` +* :variable:`CMAKE_CXX_EXTENSIONS` +* :variable:`CMAKE_CUDA_STANDARD` +* :variable:`CMAKE_CUDA_STANDARD_REQUIRED` +* :variable:`CMAKE_CUDA_EXTENSIONS` + +This policy provides compatibility for projects that do not expect +the language standard settings to be used automatically. + +The ``OLD`` behavior of this policy is to ignore language standard +setting variables when generating the ``try_compile`` test project. +The ``NEW`` behavior of this policy is to honor language standard +setting variables. + +This policy was introduced in CMake version 3.8. Unlike most policies, +CMake version |release| does *not* warn by default when this policy +is not set and simply uses ``OLD`` behavior. See documentation of the +:variable:`CMAKE_POLICY_WARNING_CMP0067 <CMAKE_POLICY_WARNING_CMP<NNNN>>` +variable to control the warning. + +.. include:: DEPRECATED.txt |