error: ‘CLOCK_VIRTUAL’ was not declared in this scope,该如何处理
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error: ‘CLOCK_VIRTUAL’ was not declared in this scope 编译一个程序报错 error: ‘CLOCK_VIRTUAL’ was not declared in this scope ,google了一下 CLOCK_VIRTUAL 是在sys/time.h中定义的,但是我看了sys/time.h 中没有这个定义??是不是少安装了啥东西?