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s-usg5-4.h
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1992-09-20
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/* Definitions file for GNU Emacs running on AT&T's System V Release 4
Copyright (C) 1987, 1990 Free Software Foundation, Inc.
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 1, 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; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
/* This file written by James Van Artsdalen of Dell Computer Corporation.
* james@bigtex.cactus.org.
*/
/* Use the SysVr3 file for at least base configuration. */
#include "s-usg5-3.h"
#define USG5_4
/* We do have multiple jobs. Handle ^Z. */
#undef NOMULTIPLEJOBS
#define LIBS_SYSTEM -lsocket -lnsl -lelf
#define ORDINARY_LINK
#if 0 /* These should be unnecessary now because of ORDINARY_LINK. */
#define START_FILES pre-crt0.o /usr/ccs/lib/crt1.o /usr/ccs/lib/crti.o /usr/ccs/lib/values-Xt.o
#define LIB_STANDARD -lc /usr/ucblib/libucb.a /usr/ccs/lib/crtn.o
#endif
/* No <sioctl.h> */
#define NO_SIOCTL_H
/* Undump with ELF */
#undef COFF
#define UNEXEC unexelf.o
/* 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.
*/
#ifdef emacs
#include <sys/filio.h>
#include <termio.h>
#include <sys/ttold.h>
#include <signal.h>
#include <sys/wait.h>
#include <sys/stream.h>
#include <sys/stropts.h>
#include <sys/termios.h>
#undef SIGIO
#endif
/* libc has this stuff, but not utimes. */
#define HAVE_RENAME
#define HAVE_SELECT
#define HAVE_TIMEVAL
#define HAVE_CLOSEDIR
#define HAVE_GETTIMEOFDAY
#define HAVE_DUP2
#define USE_UTIME
/* <sys/stat.h> *defines* stat(2) as a static function. If "static"
* is blank, then many files will have a public definition for stat(2).
*/
#undef static
/* We need bss_end from emacs.c for undumping */
#ifndef USG_SHARED_LIBRARIES
#define USG_SHARED_LIBRARIES
#endif
/* We can support this */
#define CLASH_DETECTION
#define HAVE_PTYS
#define HAVE_SETSID
#define HAVE_TCATTR
/* 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 HAVE_WAIT_HEADER
#define WAITTYPE int
#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. */
#undef FIRST_PTY_LETTER
#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");
/* This sets the name of the slave side of the PTY. On SysVr4,
grantpt(3) forks a subprocess, so keep sigchld_handler() from
intercepting that death. If any child but grantpt's should die
within, it should be caught after sigrelse(2). */
#define PTY_TTY_NAME_SPRINTF \
{ \
char *ptsname(), *ptyname; \
\
sighold(SIGCLD); \
if (grantpt(fd) == -1) \
fatal("could not grant slave pty"); \
sigrelse(SIGCLD); \
if (unlockpt(fd) == -1) \
fatal("could not unlock slave pty"); \
if (!(ptyname = ptsname(fd))) \
fatal ("could not enable slave pty"); \
strncpy(pty_name, ptyname, sizeof(pty_name)); \
pty_name[sizeof(pty_name) - 1] = 0; \
}
/* Push various streams modules onto a PTY channel. */
#define SETUP_SLAVE_PTY \
if (ioctl (xforkin, I_PUSH, "ptem") == -1) \
fatal ("ioctl I_PUSH ptem", errno); \
if (ioctl (xforkin, I_PUSH, "ldterm") == -1) \
fatal ("ioctl I_PUSH ldterm", errno); \
if (ioctl (xforkin, I_PUSH, "ttcompat") == -1) \
fatal ("ioctl I_PUSH ttcompat", errno);
/* The definition of this in s-usg5-3.h is not needed in 5.4. */
/* liblnsl_s should never be used. The _s suffix implies a shared
library, as opposed to a DLL. Share libraries were used in SVR3, and are
available only in order to allow SVR3 binaries to run. They should not be
linked in to new binaries. -- caraway!pinkas@caraway.intel.com. */
#undef LIBX10_SYSTEM
#undef LIBX11_SYSTEM
/* Tell x11term.c and keyboard.c we have the system V streams feature. */
#define SYSV_STREAMS
/* This definition was suggested for next release.
So give it a try. */
#define HAVE_SOCKETS