Начнем с компилляции


In file included from whitecat.c:33:
/usr/include/utmp.h:54: error: syntax error before "int32_t"
/usr/include/utmp.h:63: error: syntax error before "int32_t"
whitecat.c:38:21: lastlog.h: No such file or directory
whitecat.c: In function `clear_uwbtmp':
whitecat.c:247: error: structure has no member named `ut_user'
whitecat.c:247: error: structure has no member named `ut_user'
whitecat.c: In function `clear_lastlog':
whitecat.c:289: error: structure has no member named `ll_time'


Это 6.2-STABLE FreeBSD . Тут, как я понимаю, нету библиотеки. Но я могу ошибаться.