#ifdef HAVE_SYS_STRTIO_H
#include <sys/strtio.h> /* for TIOCCBRK on HP-UX */
#endif
+#if defined(HAVE_SYS_PTMS_H) && defined(HAVE_DEV_PTMX)
+#include <sys/ptms.h> /* for grantpt() and friends */
+#endif
#include <netinet/in_systm.h> /* For typedefs */
#include <netinet/in.h> /* For IPv6 macros */