if() IN_LIST operator.
CMake 3.3 adds support for the new IN_LIST operator.
OLD behavior for this policy is to ignore the IN_LIST operator. The
NEW behavior is to interpret the IN_LIST operator.
This policy was introduced in CMake version 3.3. CMake version 3.9.0 warns when the policy is not set and uses
OLD behavior. Use the
cmake_policy() command to set it to
OLD behavior of a policy is
deprecated by definition and may be removed in a future version of CMake.
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Licensed under the BSD 3-clause License.