I am trying to use ausearch_set_param, but the same when used along with proper arguments, doesn't compile and gives an undefined reference. Is there some particular library which is to be included to use ausearch_set_param ? Eg code : ausearch_set_param(au, "auid", "=", "500", AUSEARCH_STOP_EVENT)) Error is : /tmp/cciCPMs9.o: In function `main': parselib.c:(.text+0x61): undefined reference to `ausearch_set_param' collect2: ld returned 1 exit status Please help, Thanking you, Mukul Khullar