# CMAKE_POLICY_VERSION_MINIMUM

Added in version 4.0.

This is a CMake Environment Variable. Its initial value is taken from the calling process environment.

The default value for `CMAKE_POLICY_VERSION_MINIMUM` when there is no explicit configuration given on the first run while creating a new build tree. On later runs in an existing build tree the value persists in the cache as `CMAKE_POLICY_VERSION_MINIMUM`.