This is basically an optional flag.
这是一个可选择的标志。
The difference is subtle: running the test without the optional flag helps you understand the total time, even in the case of a failure.
区别很微妙:在一个失败的样例中,不带可选标志运行测试可以帮您了解运行总时间。
For instance, the configure script used for Angband (a Roguelike game) has an optional flag, — enable-gtk, to tell it to build with GTK support.
例如,用于Angband(一个Roguelike游戏)的configure脚本有一个可选的标记——enable - gtk,以告诉脚本在编译时启用gtk支持。
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