--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/s/irix4-0.h	Mon Aug 13 08:45:50 2007 +0200
@@ -0,0 +1,60 @@
+/* Synched up with: FSF 19.31. */
+
+#include "irix3-3.h"
+
+#define USG5_3
+#define IRIX4
+
+#define HAVE_ALLOCA
+#ifndef NOT_C_CODE
+#include <alloca.h>
+#endif
+
+#undef NEED_SIOCTL
+
+/* Make process_send_signal work by "typing" a signal character on the pty.  */
+#define SIGNALS_VIA_CHARACTERS
+
+/* use K&R C */
+/* XEmacs change -- use ANSI, not K&R */
+#ifndef __GNUC__
+#define C_SWITCH_SYSTEM -xansi
+#endif
+
+/* SGI has all the fancy wait stuff, but we can't include sys/wait.h
+   because it defines BIG_ENDIAN and LITTLE_ENDIAN (ugh!.)  Instead
+   we'll just define WNOHANG right here.
+   (An implicit decl is good enough for wait3.)  */
+/* [XEmacs: Now that we don't use BIG_ENDIAN/LITTLE_ENDIAN, it's safe
+   to include wait.h.  Should something change here?] */
+
+#define WNOHANG		0x1
+
+/* No need to use sprintf to get the tty name--we get that from _getpty.  */
+#undef PTY_TTY_NAME_SPRINTF
+#define PTY_TTY_NAME_SPRINTF
+/* No need to get the pty name at all.  */
+#define PTY_NAME_SPRINTF
+/* We need only try once to open a pty.  */
+#define PTY_ITERATION
+/* Here is how to do it.  */
+/* It is necessary to prevent SIGCHLD signals within _getpty.
+   So we block them. */
+#define PTY_OPEN						\
+{								\
+  char *name;							\
+  EMACS_BLOCK_SIGCHLD;						\
+  name = _getpty (&fd, O_RDWR | O_NDELAY, 0600, 0);		\
+  EMACS_UNBLOCK_SIGCHLD;					\
+  if (name == 0)						\
+    return -1;							\
+  if (fd < 0)							\
+    return -1;							\
+  if (fstat (fd, &stb) < 0)					\
+    return -1;							\
+  strcpy (pty_name, name);					\
+}
+
+/* jpff@maths.bath.ac.uk reports `struct exception' is not defined
+   on this system, so inhibit use of matherr.  */
+#define NO_MATHERR