CMAKE_POLICY_VERSION_MINIMUMΒΆ
Added in version 4.0.
Specify a minimum Policy Version for a project without modifying
its calls to cmake_minimum_required(VERSION) and
cmake_policy(VERSION).
This variable should not be set by a project in CMake code as a way to
set its own policy version.  Use cmake_minimum_required(VERSION)
and/or cmake_policy(VERSION) for that.  This variable is meant
to externally set policies for which a project has not itself been updated:
- Users running CMake may set this variable in the cache, e.g., - -DCMAKE_POLICY_VERSION_MINIMUM=3.5, to try configuring a project that has not been updated to set at least that policy version itself.- Alternatively, users may set the - CMAKE_POLICY_VERSION_MINIMUMenvironment variable to initialize the cache entry in new build trees automatically.
- Projects may set this variable before a call to - add_subdirectory()that adds a third-party project in order to set its policy version without modifying third-party code.
See CMAKE_POLICY_DEFAULT_CMP<NNNN> to set individual policies.
