+
+/* PTY support functions */
+#undef HAVE_GETPT /* glibc's easy pty allocation function */
+#undef HAVE__GETPTY /* SGI's easy pty allocation function */
+#undef HAVE_OPENPTY /* BSD's easy pty allocation function */
+#undef HAVE_GRANTPT /* Unix98 */
+#undef HAVE_UNLOCKPT /* Unix98 */
+#undef HAVE_PTSNAME /* Unix98 */
+#undef HAVE_KILLPG /* BSD */
+#undef HAVE_TCGETPGRP /* Posix 1 */
+#undef HAVE_ISASTREAM /* SysV streams */
+#undef HAVE_PTY_H /* Linux, Tru64 openpty */
+#undef HAVE_LIBUTIL_H /* BSD openpty */
+#undef HAVE_UTIL_H /* NetBSD openpty */
+#undef HAVE_STROPTS_H /* SysV streams */
+#undef HAVE_STRTIO_H /* SysV streams TIOCSIGNAL */
+