Explicitly enable or disable the warning when CMake Policy CMP<NNNN>
has not been set explicitly by cmake_policy() or implicitly
by cmake_minimum_required(). This is meaningful
only for the policies that do not warn by default:
CMAKE_POLICY_WARNING_CMP0025 controlled the warning for
policy CMP0025 in CMake versions before 4.0.
CMAKE_POLICY_WARNING_CMP0047 controlled the warning for
policy CMP0047 in CMake versions before 4.0.
CMAKE_POLICY_WARNING_CMP0056 controlled the warning for
policy CMP0056 in CMake versions before 4.0.
CMAKE_POLICY_WARNING_CMP0060 controlled the warning for
policy CMP0060 in CMake versions before 4.0.
CMAKE_POLICY_WARNING_CMP0065 controlled the warning for
policy CMP0065 in CMake versions before 4.0.
CMAKE_POLICY_WARNING_CMP0066 controls the warning for
policy CMP0066.
CMAKE_POLICY_WARNING_CMP0067 controls the warning for
policy CMP0067.
CMAKE_POLICY_WARNING_CMP0082 controls the warning for
policy CMP0082.
CMAKE_POLICY_WARNING_CMP0089 controls the warning for
policy CMP0089.
CMAKE_POLICY_WARNING_CMP0102 controls the warning for
policy CMP0102.
CMAKE_POLICY_WARNING_CMP0112 controls the warning for
policy CMP0112.
CMAKE_POLICY_WARNING_CMP0116 controls the warning for
policy CMP0116.
CMAKE_POLICY_WARNING_CMP0126 controls the warning for
policy CMP0126.
CMAKE_POLICY_WARNING_CMP0128 controls the warning for
policy CMP0128.
CMAKE_POLICY_WARNING_CMP0129 controls the warning for
policy CMP0129.
CMAKE_POLICY_WARNING_CMP0133 controls the warning for
policy CMP0133.
CMAKE_POLICY_WARNING_CMP0172 controls the warning for
policy CMP0172.
This variable should not be set by a project in CMake code. Project
developers running CMake may set this variable in their cache to
enable the warning (e.g. -DCMAKE_POLICY_WARNING_CMP<NNNN>=ON).
Alternatively, running cmake(1) with the
--debug-output,
--trace, or
--trace-expand option will also
enable the warning.