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