cmake-mark_as_advanced

mark_as_advanced: Mark cmake cached variables as advanced.

  mark_as_advanced([CLEAR|FORCE] VAR VAR2 VAR...)

标记已命名的缓冲变量为 advanced.  advanced 变量 不会在cmake 图形界面中显示 除非 advanced 选项开启. 若是第一个参数是 CLEAR  advanced 变量变为unadvanced. 若是 FORCE 是第一个参数, 变量变为 advanced. 若是 FORCE 和 CLEAR 都未选定, 新变量标记为 advanced, 可是若是变量已经是 advanced/non-advanced 状态, 就不会发生变化.