--- /dev/null
+/* Definitions for running gdb on a host machine running any flavor of SVR4.
+ Copyright (C) 1991, Free Software Foundation, Inc.
+ Written by Fred Fish at Cygnus Support (fnf@cygint)
+
+This file is part of GDB.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+/* SVR4 has /proc support, so use it instead of ptrace. */
+
+#define USE_PROC_FS
+
+/* SVR4 has termio facilities. */
+
+#define HAVE_TERMIO
+
+/* TIOCGETC and TIOCGLTC are picked up somewhere, but struct tchars
+ and struct ltchars are not. This makes problems for inflow.c.
+ It is unknown at this time if this is a generic SVR4 problem or
+ one just limited to the initial SVR4 port host machine. */
+
+#define TIOCGETC_BROKEN
+#define TIOCGLTC_BROKEN
+
+/* SVR4 is a derivative of System V Release 3 (USG) */
+
+#define USG
+
+/* Get rid of any system-imposed stack limit if possible. */
+
+/* #define SET_STACK_LIMIT_HUGE */
+
+/* SVR4 machines can easily do attach and detach via /proc (procfs.c)
+ support */
+
+#define ATTACH_DETACH
+
+/* If we are using SVR4 /proc instead of ptrace, use CREATE_INFERIOR_HOOK
+ to do internal /proc initialization. */
+
+#ifdef USE_PROC_FS
+#define CREATE_INFERIOR_HOOK(pid) inferior_proc_init(pid)
+#endif
+