CMAKE_POLICY_VERSION_MINIMUM

在 4.0 版被加入.

這是一個 CMake 環境變數。其初始值取自呼叫的進程環境。

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.