* sysdep-sysv4.h: New file for SVR4.

* configure.in (*-*-sysv4*):  Use sysdep-sysv4.h.

	* configure.in (*-*-ultrix2):  Add triplet from Michael Rendell
	(michael@mercury.cs.mun.ca)

readline/.Sanitize

@@ -48,6 +48,7 @@ sysdep-irix.h
 sysdep-norm.h
 sysdep-obsd.h
 sysdep-sco.h
+sysdep-sysv4.h
 vi_keymap.c
 vi_mode.c
 

readline/ChangeLog

@@ -1,3 +1,11 @@
+Tue Mar  2 21:25:36 1993  Fred Fish  (fnf@cygnus.com)
+
+	* sysdep-sysv4.h:  New file for SVR4.
+	* configure.in (*-*-sysv4*):  Use sysdep-sysv4.h.
+
+	* configure.in (*-*-ultrix2):  Add triplet from Michael Rendell
+	(michael@mercury.cs.mun.ca)
+
 Tue Dec 15 12:38:16 1992  Ian Lance Taylor  (ian@cygnus.com)
 
 	* configure.in (i[34]86-*-sco3.2v4*): use mh-sco4.

readline/sysdep-sysv4.h

@@ -0,0 +1,26 @@
+/* System-dependent stuff, for SVR4 systems */
+
+#ifdef __GNUC__
+#define alloca __builtin_alloca
+#else
+#if defined (sparc) && defined (sun)
+#include <alloca.h>
+#endif
+#ifndef alloca				/* May be a macro, with args. */
+extern char *alloca ();
+#endif
+#endif
+
+#include <sys/types.h>			/* Needed by dirent.h */
+#include <sys/stream.h>
+#include <sys/ptem.h>
+#include <dirent.h>
+typedef struct dirent dirent;
+
+/* SVR4 systems should use <termios.h> rather than <termio.h>. */
+#define _POSIX_VERSION
+
+/* SVR4 systems need _POSIX_SOURCE defined to suppress 'struct winsize'
+   definition in <termios.h>, since it's unconditionally defined in
+   <sys/ptem.h>. */
+#define _POSIX_SOURCE