error: ‘PRIO_PROCESS’ undeclared

问题：

udev/udevd.c:1356:14: error: ‘PRIO_PROCESS’ undeclared (first use in this function)1356 |  setpriority(PRIO_PROCESS, 0, UDEVD_PRIORITY);

解决办法：

在报错的文件中，增加以下include即可。

#include <sys/resource.h>

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