+#ifdef HAVE_LIBUTIL_H
+# include <libutil.h> /* Openpty on FreeBSD at least */
+#endif
+
+#if defined(KRB5) && defined(USE_AFS)
+# include <krb5.h>
+# include <kafs.h>
+#endif
+
+#if defined(HAVE_SYS_SYSLOG_H)
+# include <sys/syslog.h>
+#endif
+
+/*
+ * On HP-UX 11.11, shadow.h and prot.h provide conflicting declarations
+ * of getspnam when _INCLUDE__STDC__ is defined, so we unset it here.
+ */
+#ifdef GETSPNAM_CONFLICTING_DEFS
+# ifdef _INCLUDE__STDC__
+# undef _INCLUDE__STDC__
+# endif
+#endif
+