cc -pthread -Wall -Wextra -Werror=implicit-function-declaration sys_resource/setpriority.c -o sys_resource/setpriority -D_GNU_SOURCE -D_BSD_SOURCE -D_ALL_SOURCE -D_DEFAULT_SOURCE -lm -lpthread -lrt -lintl -liconv [cc@relibc::platform::sys:590 INFO] TODO: getrlimit(3, 0x7ffffffffbf0): not implemented [cc1@relibc::platform::sys:590 INFO] TODO: getrlimit(3, 0x7ffffffffb00): not implemented [cc1@relibc::platform::sys:590 INFO] TODO: getrlimit(9, 0x7ffffffffad0): not implemented [cc1@relibc::platform::sys:590 INFO] TODO: getrlimit(9, 0x7ffffffffb00): not implemented [cc1@relibc::platform::sys:590 INFO] TODO: getrlimit(5, 0x7ffffffffb00): not implemented [cc1@relibc::platform::sys:590 INFO] TODO: getrlimit(9, 0x7ffffffffad0): not implemented sys_resource/setpriority.c: In function 'main': sys_resource/setpriority.c:16:25: error: 'NZERO' undeclared (first use in this function) 16 | if ( priority < NZERO - 1 ) | ^~~~~ sys_resource/setpriority.c:16:25: note: each undeclared identifier is reported only once for each function it appears in