#ifdef GETLOADAVG_PRIVILEGED
#ifdef POSIX
+
/* Hopefully if a system says it's POSIX.1 and has the setuid and setgid
functions, they work as POSIX.1 says. Some systems (Alpha OSF/1 1.2,
for example) which claim to be POSIX.1 also have the BSD setreuid and
#if defined (HAVE_SETREGID) && defined (HAVE_SETGID)
#undef HAVE_SETREGID
#endif
-#endif
+
+#else /* Not POSIX. */
+
+/* Some POSIX.1 systems have the seteuid and setegid functions. In a
+ POSIX-like system, they are the best thing to use. However, some
+ non-POSIX systems have them too but they do not work in the POSIX style
+ and we must use setreuid and setregid instead. */
+
+#undef HAVE_SETEUID
+#undef HAVE_SETEGID
+
+#endif /* POSIX. */
#ifndef HAVE_UNISTD_H
extern int getuid (), getgid (), geteuid (), getegid ();