gistfile1.c

static gboolean
wtmp_helper_start (void)
{
#if defined(UTXDB_LOG)
                if (setutxdb (UTXDB_LOG, NULL) != 0) {
                        return FALSE;
                }
#elif defined(WTMPX_FILENAME)
                if (utmpxname (WTMPX_FILENAME) != 0) {
                        return FALSE;
                }

                setutxent ();
#else
#error You have utmpx.h, but no known way to use it for wtmp entries
#endif

                return TRUE;
}