[bpt/emacs.git] / src / s / usg5-4.h

/* 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.  Subsequently improved for Dell 2.2 by Eric
 * S. Raymond <esr@snark.thyrsus.com>.
 */

/* Use the SysVr3 file for at least base configuration. */

#include "usg5-3.h"

#define USG5_4

/* We do have multiple jobs.  Handle ^Z. */

#undef NOMULTIPLEJOBS

#define LIBS_SYSTEM -lsocket -lnsl -lelf
#define ORDINARY_LINK

#ifdef ORDINARY_LINK
#define LIB_STANDARD -lc /usr/ucblib/libucb.a
#else
#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

/* there are no -lg libraries on this system, and no libPW */

#define LIBS_DEBUG
#define LIBS_STANDARD -lc

/* 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

/* 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.
 */

#ifndef NSIG
#define NSIG	32
#endif

/* libc has this stuff, but not utimes. */

#define HAVE_SELECT
#define HAVE_TIMEVAL
#define HAVE_CLOSEDIR

/* <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_TERMIOS

/* 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);

/* Undo the SVr3 X11 library definition */
#undef LIB_X11_LIB

/* 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
Commit	Line	Data
20c428fd	1	/* Definitions file for GNU Emacs running on AT&T's System V Release 4
bd307392	2	Copyright (C) 1987, 1990 Free Software Foundation, Inc.
20c428fd JB	3
	4	This file is part of GNU Emacs.
	5
bd307392 JB	6	GNU Emacs is free software; you can redistribute it and/or modify
	7	it under the terms of the GNU General Public License as published by
	8	the Free Software Foundation; either version 1, or (at your option)
	9	any later version.
	10
20c428fd	11	GNU Emacs is distributed in the hope that it will be useful,
bd307392 JB	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
	15
	16	You should have received a copy of the GNU General Public License
	17	along with GNU Emacs; see the file COPYING. If not, write to
	18	the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
20c428fd JB	19
20c428fd JB	20	/* This file written by James Van Artsdalen of Dell Computer Corporation.
5447018c JB	21	* james@bigtex.cactus.org. Subsequently improved for Dell 2.2 by Eric
5447018c JB	22	* S. Raymond <esr@snark.thyrsus.com>.
20c428fd JB	23	*/
	24
	25	/* Use the SysVr3 file for at least base configuration. */
	26
72a8c21e	27	#include "usg5-3.h"
20c428fd JB	28
	29	#define USG5_4
	30
	31	/* We do have multiple jobs. Handle ^Z. */
	32
	33	#undef NOMULTIPLEJOBS
	34
c21d3ee2 RS	35	#define LIBS_SYSTEM -lsocket -lnsl -lelf
c21d3ee2 RS	36	#define ORDINARY_LINK
20c428fd	37
5447018c JB	38	#ifdef ORDINARY_LINK
	39	#define LIB_STANDARD -lc /usr/ucblib/libucb.a
	40	#else
c21d3ee2 RS	41	#define START_FILES pre-crt0.o /usr/ccs/lib/crt1.o /usr/ccs/lib/crti.o /usr/ccs/lib/values-Xt.o
	42	#define LIB_STANDARD -lc /usr/ucblib/libucb.a /usr/ccs/lib/crtn.o
	43	#endif
20c428fd	44
5447018c JB	45	/* there are no -lg libraries on this system, and no libPW */
	46
	47	#define LIBS_DEBUG
	48	#define LIBS_STANDARD -lc
	49
bd307392	50	/* No <sioctl.h> */
20c428fd	51
bd307392	52	#define NO_SIOCTL_H
20c428fd JB	53
	54	/* Undump with ELF */
	55
	56	#undef COFF
	57
	58	#define UNEXEC unexelf.o
	59
	60	/* Get FIONREAD from <sys/filio.h>. Get <sys/ttold.h> to get struct
	61	* tchars. But get <termio.h> first to make sure ttold.h doesn't
	62	* interfere. And don't try to use SIGIO yet.
	63	*/
	64
	65	#ifdef emacs
	66	#include <sys/filio.h>
	67	#include <termio.h>
	68	#include <sys/ttold.h>
	69	#include <signal.h>
bd307392 JB	70	#include <sys/wait.h>
	71	#include <sys/stream.h>
	72	#include <sys/stropts.h>
	73	#include <sys/termios.h>
20c428fd JB	74	#undef SIGIO
	75	#endif
	76
5447018c JB	77	/* Some SVr4s don't define NSIG in sys/signal.h for ANSI environments;
	78	* instead, there's a system variable _sys_nsig. Unfortunately, we need the
	79	* constant to dimension an array. So wire in the appropriate value here.
	80	*/
	81
	82	#ifndef NSIG
	83	#define NSIG 32
	84	#endif
	85
bd307392	86	/* libc has this stuff, but not utimes. */
20c428fd	87
20c428fd JB	88	#define HAVE_SELECT
	89	#define HAVE_TIMEVAL
	90	#define HAVE_CLOSEDIR
20c428fd	91
20c428fd JB	92	/* <sys/stat.h> defines stat(2) as a static function. If "static"
	93	* is blank, then many files will have a public definition for stat(2).
	94	*/
	95
	96	#undef static
	97
	98	/* We need bss_end from emacs.c for undumping */
	99
	100	#ifndef USG_SHARED_LIBRARIES
	101	#define USG_SHARED_LIBRARIES
	102	#endif
	103
	104	/* We can support this */
	105
	106	#define CLASH_DETECTION
	107
	108	#define HAVE_PTYS
	109	#define HAVE_SETSID
5447018c	110	#define HAVE_TERMIOS
20c428fd JB	111
	112	/* It is possible to receive SIGCHLD when there are no children
	113	waiting, because a previous waitsys(2) cleaned up the carcass of child
	114	without clearing the SIGCHLD pending info. So, use a non-blocking
	115	wait3 instead, which maps to waitpid(2) in SysVr4. */
	116
	117	#define HAVE_WAIT_HEADER
	118	#define WAITTYPE int
	119	#define wait3(status, options, rusage) \
	120	waitpid((pid_t) -1, (status), (options))
	121	#define WRETCODE(w) (w >> 8)
	122
	123	/* TIOCGPGRP is broken in SysVr4, so we can't send signals to PTY
	124	subprocesses the usual way. But TIOCSIGNAL does work for PTYs, and
	125	this is all we need. */
	126
	127	#define TIOCSIGSEND TIOCSIGNAL
	128
	129	/* This change means that we don't loop through allocate_pty too many
	130	times in the (rare) event of a failure. */
	131
	132	#undef FIRST_PTY_LETTER
	133	#define FIRST_PTY_LETTER 'z'
	134
	135	/* This sets the name of the master side of the PTY. */
	136
	137	#define PTY_NAME_SPRINTF strcpy (pty_name, "/dev/ptmx");
	138
	139	/* This sets the name of the slave side of the PTY. On SysVr4,
	140	grantpt(3) forks a subprocess, so keep sigchld_handler() from
	141	intercepting that death. If any child but grantpt's should die
	142	within, it should be caught after sigrelse(2). */
	143
	144	#define PTY_TTY_NAME_SPRINTF \
	145	{ \
	146	char ptsname(), ptyname; \
	147	\
	148	sighold(SIGCLD); \
	149	if (grantpt(fd) == -1) \
	150	fatal("could not grant slave pty"); \
	151	sigrelse(SIGCLD); \
	152	if (unlockpt(fd) == -1) \
	153	fatal("could not unlock slave pty"); \
	154	if (!(ptyname = ptsname(fd))) \
	155	fatal ("could not enable slave pty"); \
	156	strncpy(pty_name, ptyname, sizeof(pty_name)); \
	157	pty_name[sizeof(pty_name) - 1] = 0; \
	158	}
	159
	160	/* Push various streams modules onto a PTY channel. */
	161
	162	#define SETUP_SLAVE_PTY \
	163	if (ioctl (xforkin, I_PUSH, "ptem") == -1) \
	164	fatal ("ioctl I_PUSH ptem", errno); \
	165	if (ioctl (xforkin, I_PUSH, "ldterm") == -1) \
	166	fatal ("ioctl I_PUSH ldterm", errno); \
	167	if (ioctl (xforkin, I_PUSH, "ttcompat") == -1) \
	168	fatal ("ioctl I_PUSH ttcompat", errno);
	169
5447018c	170	/* Undo the SVr3 X11 library definition */
8c64cf16	171	#undef LIB_X11_LIB
5447018c	172
bd307392 JB	173	/* The definition of this in s-usg5-3.h is not needed in 5.4. */
	174	/* liblnsl_s should never be used. The _s suffix implies a shared
	175	library, as opposed to a DLL. Share libraries were used in SVR3, and are
	176	available only in order to allow SVR3 binaries to run. They should not be
	177	linked in to new binaries. -- caraway!pinkas@caraway.intel.com. */
	178	#undef LIBX10_SYSTEM
20c428fd	179	#undef LIBX11_SYSTEM
bd307392 JB	180
	181	/* Tell x11term.c and keyboard.c we have the system V streams feature. */
	182	#define SYSV_STREAMS
	183
	184	/* This definition was suggested for next release.
	185	So give it a try. */
	186	#define HAVE_SOCKETS