/CMake 3.19


New in version 3.12.

Include file check macros honor CMAKE_REQUIRED_LIBRARIES.

In CMake 3.12 and above, the

now prefer to link the check executable to the libraries listed in the CMAKE_REQUIRED_LIBRARIES variable. This policy provides compatibility with projects that have not been updated to expect this behavior.

The OLD behavior for this policy is to ignore CMAKE_REQUIRED_LIBRARIES in the include file check macros. The NEW behavior of this policy is to honor CMAKE_REQUIRED_LIBRARIES in the include file check macros.

This policy was introduced in CMake version 3.12. CMake version 3.19.0-rc3 warns when the policy is not set and uses OLD behavior. Use the cmake_policy() command to set it to OLD or NEW explicitly.


The OLD behavior of a policy is deprecated by definition and may be removed in a future version of CMake.

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