| CMAKE_SYSTEM_ENVIRONMENT_ID | |
| --------------------------- | |
| * The :envvar:`CMAKE_SYSTEM_ENVIRONMENT_ID` environment variable was added to | |
| hint to :manual:`cmake(1)` when :cmake-option:`--fresh` may be necessary, | |
| along with :envvar:`CMAKE_SYSTEM_ENVIRONMENT_ACTION` to control what happens | |
| when :envvar:`CMAKE_SYSTEM_ENVIRONMENT_ID` changes. |