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- 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
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