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/* Definitions file for GNU Emacs running on AT&T's System V Release 4
Copyright (C) 1987, 1990, 1999-2012 Free Software Foundation, Inc.
Written by James Van Artsdalen of Dell Computer Corp. james@bigtex.cactus.org.
Subsequently improved for Dell 2.2 by Eric S. Raymond <esr@snark.thyrsus.com>.
This file is part of GNU Emacs.
GNU Emacs 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 3 of the License, or
(at your option) any later version.
GNU Emacs 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 GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
/* Use the SysVr3 file for at least base configuration. */
#define USG /* System III, System V, etc */
#define USG5
#define USG5_4
/* SYSTEM_TYPE should indicate the kind of system you are using.
It sets the Lisp variable system-type. */
#define SYSTEM_TYPE "usg-unix-v"
/* setjmp and longjmp can safely replace _setjmp and _longjmp,
but they will run slower. */
#define _setjmp setjmp
#define _longjmp longjmp
/* The docs for system V/386 suggest v.3 has sigpause, so let's try it. */
#define HAVE_SYSV_SIGPAUSE
/* Get FIONREAD from <sys/filio.h>. Get <sys/ttold.h> to get struct tchars.
But get <termio.h> first to make sure ttold.h doesn't interfere.
And don't try to use SIGIO yet. */
#include <sys/wait.h>
#ifdef emacs
#include <sys/filio.h>
#include <termio.h>
#include <sys/ttold.h>
#include <signal.h>
#include <sys/stream.h>
#include <sys/stropts.h>
#include <sys/termios.h>
#define BROKEN_SIGIO
#endif
/* Some SVr4s don't define NSIG in sys/signal.h for ANSI environments;
instead, there's a system variable _sys_nsig. Unfortunately, we need the
constant to dimension an array. So wire in the appropriate value here. */
#define NSIG_MINIMUM 32
/* We can support this. */
#define CLASH_DETECTION
/* Define HAVE_PTYS if the system supports pty devices. */
#define HAVE_PTYS
/* It is possible to receive SIGCHLD when there are no children
waiting, because a previous waitsys(2) cleaned up the carcass of child
without clearing the SIGCHLD pending info. So, use a non-blocking
wait3 instead, which maps to waitpid(2) in SysVr4. */
#define wait3(status, options, rusage) \
waitpid ((pid_t) -1, (status), (options))
#define WRETCODE(w) (w >> 8)
/* TIOCGPGRP is broken in SysVr4, so we can't send signals to PTY
subprocesses the usual way. But TIOCSIGNAL does work for PTYs, and
this is all we need. */
#define TIOCSIGSEND TIOCSIGNAL
/* This change means that we don't loop through allocate_pty too many
times in the (rare) event of a failure. */
#define FIRST_PTY_LETTER 'z'
/* This sets the name of the master side of the PTY. */
#define PTY_NAME_SPRINTF strcpy (pty_name, "/dev/ptmx");
/* Push various streams modules onto a PTY channel. */
#define SETUP_SLAVE_PTY \
if (ioctl (xforkin, I_PUSH, "ptem") == -1) \
fatal ("ioctl I_PUSH ptem"); \
if (ioctl (xforkin, I_PUSH, "ldterm") == -1) \
fatal ("ioctl I_PUSH ldterm"); \
if (ioctl (xforkin, I_PUSH, "ttcompat") == -1) \
fatal ("ioctl I_PUSH ttcompat");
/* This definition was suggested for next release. So give it a try. */
#define HAVE_SOCKETS
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