[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, 1999 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 2, 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, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, 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

/* Motif needs -lgen.  */
#define LIBS_SYSTEM -lsocket -lnsl -lelf -lgen
#define ORDINARY_LINK

#if 0
#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
#else

#ifdef ORDINARY_LINK
#define LIB_STANDARD
#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/ccs/lib/crtn.o
#endif
#endif

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

#define LIBS_DEBUG
/* This is turned off because nobody actually uses LIBS_STANDARD (Nov 1995).
   That name is a typo.  The next step is to delete this entirely.  */
/* #define LIBS_STANDARD -lc */

/* No <sioctl.h> */

#define NO_SIOCTL_H

/* Undump with ELF */

#undef COFF

#define UNEXEC unexelf.o

/* <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

/* 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.
 */

#ifndef NOT_C_CODE
#include <sys/wait.h>
#endif

#ifdef emacs
#ifndef NO_FILIO_H
#include <sys/filio.h>
#endif
#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 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_TERMIOS
#undef BROKEN_TIOCGWINSZ
#undef BROKEN_TIOCGETC

/* 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.  */

#ifndef IRIX6
#define TIOCSIGSEND TIOCSIGNAL
#endif

/* 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)				\
      { emacs_close (fd); return -1; }			\
    sigrelse (SIGCLD);					\
    if (unlockpt (fd) == -1)				\
      { emacs_close (fd); return -1; }			\
    if (!(ptyname = ptsname (fd)))			\
      { emacs_close (fd); return -1; }			\
    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

#ifndef IRIX6
#define bcopy(src,dst,n)	memmove (dst,src,n)
#define bcmp(src,dst,n)		memcmp (src,dst,n)
#define bzero(s,n)		memset (s,0,n)
#endif

/* Markus Weiand <weiand@khof.com> says this is needed for Motif on
   SINIX.  */
#undef LIBS_SYSTEM
#define LIBS_SYSTEM -lgen
Commit	Line	Data
20c428fd	1	/* Definitions file for GNU Emacs running on AT&T's System V Release 4
bb7b4368	2	Copyright (C) 1987, 1990, 1999 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
bd307392 JB	7	it under the terms of the GNU General Public License as published by
17385adc	8	the Free Software Foundation; either version 2, or (at your option)
bd307392 JB	9	any later version.
bd307392 JB	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
3b7ad313 EN	18	the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
3b7ad313 EN	19	Boston, MA 02111-1307, USA. */
20c428fd JB	20
20c428fd JB	21	/* This file written by James Van Artsdalen of Dell Computer Corporation.
5447018c JB	22	* james@bigtex.cactus.org. Subsequently improved for Dell 2.2 by Eric
5447018c JB	23	* S. Raymond <esr@snark.thyrsus.com>.
20c428fd JB	24	*/
	25
	26	/* Use the SysVr3 file for at least base configuration. */
	27
72a8c21e	28	#include "usg5-3.h"
20c428fd JB	29
	30	#define USG5_4
	31
	32	/* We do have multiple jobs. Handle ^Z. */
	33
	34	#undef NOMULTIPLEJOBS
	35
c42b4fab GM	36	/* Motif needs -lgen. */
c42b4fab GM	37	#define LIBS_SYSTEM -lsocket -lnsl -lelf -lgen
c21d3ee2	38	#define ORDINARY_LINK
20c428fd	39
5cb70bb5	40	#if 0
5447018c JB	41	#ifdef ORDINARY_LINK
	42	#define LIB_STANDARD -lc /usr/ucblib/libucb.a
	43	#else
c21d3ee2 RS	44	#define START_FILES pre-crt0.o /usr/ccs/lib/crt1.o /usr/ccs/lib/crti.o /usr/ccs/lib/values-Xt.o
	45	#define LIB_STANDARD -lc /usr/ucblib/libucb.a /usr/ccs/lib/crtn.o
	46	#endif
5cb70bb5 RS	47	#else
	48
	49	#ifdef ORDINARY_LINK
	50	#define LIB_STANDARD
	51	#else
	52	#define START_FILES pre-crt0.o /usr/ccs/lib/crt1.o /usr/ccs/lib/crti.o /usr/ccs/lib/values-Xt.o
	53	#define LIB_STANDARD -lc /usr/ccs/lib/crtn.o
	54	#endif
	55	#endif
20c428fd	56
5447018c JB	57	/* there are no -lg libraries on this system, and no libPW */
	58
	59	#define LIBS_DEBUG
08bc143c RS	60	/* This is turned off because nobody actually uses LIBS_STANDARD (Nov 1995).
	61	That name is a typo. The next step is to delete this entirely. */
	62	/* #define LIBS_STANDARD -lc */
5447018c	63
bd307392	64	/* No <sioctl.h> */
20c428fd	65
bd307392	66	#define NO_SIOCTL_H
20c428fd JB	67
	68	/* Undump with ELF */
	69
	70	#undef COFF
	71
	72	#define UNEXEC unexelf.o
	73
821188d3 RS	74	/* <sys/stat.h> defines stat(2) as a static function. If "static"
	75	* is blank, then many files will have a public definition for stat(2).
	76	*/
	77
	78	#undef static
	79
20c428fd JB	80	/* Get FIONREAD from <sys/filio.h>. Get <sys/ttold.h> to get struct
	81	* tchars. But get <termio.h> first to make sure ttold.h doesn't
	82	* interfere. And don't try to use SIGIO yet.
	83	*/
	84
f0ce95e7 RS	85	#ifndef NOT_C_CODE
	86	#include <sys/wait.h>
	87	#endif
	88
20c428fd	89	#ifdef emacs
f9414412	90	#ifndef NO_FILIO_H
20c428fd	91	#include <sys/filio.h>
f9414412	92	#endif
20c428fd JB	93	#include <termio.h>
	94	#include <sys/ttold.h>
	95	#include <signal.h>
bd307392 JB	96	#include <sys/stream.h>
	97	#include <sys/stropts.h>
	98	#include <sys/termios.h>
bb7b4368	99	#define BROKEN_SIGIO
20c428fd JB	100	#endif
20c428fd JB	101
5447018c JB	102	/* Some SVr4s don't define NSIG in sys/signal.h for ANSI environments;
	103	* instead, there's a system variable _sys_nsig. Unfortunately, we need the
	104	* constant to dimension an array. So wire in the appropriate value here.
	105	*/
bb7b4368	106	#define NSIG_MINIMUM 32
5447018c	107
20c428fd JB	108	/* We need bss_end from emacs.c for undumping */
	109
	110	#ifndef USG_SHARED_LIBRARIES
	111	#define USG_SHARED_LIBRARIES
	112	#endif
	113
	114	/* We can support this */
	115
	116	#define CLASH_DETECTION
	117
	118	#define HAVE_PTYS
5447018c	119	#define HAVE_TERMIOS
2373f91f RS	120	#undef BROKEN_TIOCGWINSZ
2373f91f RS	121	#undef BROKEN_TIOCGETC
20c428fd JB	122
	123	/* It is possible to receive SIGCHLD when there are no children
	124	waiting, because a previous waitsys(2) cleaned up the carcass of child
	125	without clearing the SIGCHLD pending info. So, use a non-blocking
	126	wait3 instead, which maps to waitpid(2) in SysVr4. */
	127
	128	#define HAVE_WAIT_HEADER
	129	#define WAITTYPE int
	130	#define wait3(status, options, rusage) \
5bf62b08	131	waitpid ((pid_t) -1, (status), (options))
20c428fd JB	132	#define WRETCODE(w) (w >> 8)
	133
	134	/* TIOCGPGRP is broken in SysVr4, so we can't send signals to PTY
	135	subprocesses the usual way. But TIOCSIGNAL does work for PTYs, and
	136	this is all we need. */
	137
ca493964	138	#ifndef IRIX6
20c428fd	139	#define TIOCSIGSEND TIOCSIGNAL
ca493964	140	#endif
20c428fd JB	141
	142	/* This change means that we don't loop through allocate_pty too many
	143	times in the (rare) event of a failure. */
	144
	145	#undef FIRST_PTY_LETTER
	146	#define FIRST_PTY_LETTER 'z'
	147
	148	/* This sets the name of the master side of the PTY. */
	149
	150	#define PTY_NAME_SPRINTF strcpy (pty_name, "/dev/ptmx");
	151
	152	/* This sets the name of the slave side of the PTY. On SysVr4,
	153	grantpt(3) forks a subprocess, so keep sigchld_handler() from
	154	intercepting that death. If any child but grantpt's should die
	155	within, it should be caught after sigrelse(2). */
	156
5bf62b08 RS	157	#define PTY_TTY_NAME_SPRINTF \
	158	{ \
	159	char ptsname (), ptyname; \
	160	\
	161	sighold (SIGCLD); \
	162	if (grantpt (fd) == -1) \
bb7b4368	163	{ emacs_close (fd); return -1; } \
5bf62b08 RS	164	sigrelse (SIGCLD); \
5bf62b08 RS	165	if (unlockpt (fd) == -1) \
bb7b4368	166	{ emacs_close (fd); return -1; } \
5bf62b08	167	if (!(ptyname = ptsname (fd))) \
bb7b4368	168	{ emacs_close (fd); return -1; } \
5bf62b08 RS	169	strncpy (pty_name, ptyname, sizeof (pty_name)); \
5bf62b08 RS	170	pty_name[sizeof (pty_name) - 1] = 0; \
20c428fd JB	171	}
	172
	173	/* Push various streams modules onto a PTY channel. */
	174
	175	#define SETUP_SLAVE_PTY \
	176	if (ioctl (xforkin, I_PUSH, "ptem") == -1) \
	177	fatal ("ioctl I_PUSH ptem", errno); \
	178	if (ioctl (xforkin, I_PUSH, "ldterm") == -1) \
	179	fatal ("ioctl I_PUSH ldterm", errno); \
	180	if (ioctl (xforkin, I_PUSH, "ttcompat") == -1) \
	181	fatal ("ioctl I_PUSH ttcompat", errno);
	182
5447018c	183	/* Undo the SVr3 X11 library definition */
8c64cf16	184	#undef LIB_X11_LIB
5447018c	185
bd307392 JB	186	/* The definition of this in s-usg5-3.h is not needed in 5.4. */
	187	/* liblnsl_s should never be used. The _s suffix implies a shared
	188	library, as opposed to a DLL. Share libraries were used in SVR3, and are
	189	available only in order to allow SVR3 binaries to run. They should not be
	190	linked in to new binaries. -- caraway!pinkas@caraway.intel.com. */
	191	#undef LIBX10_SYSTEM
20c428fd	192	#undef LIBX11_SYSTEM
bd307392 JB	193
	194	/* Tell x11term.c and keyboard.c we have the system V streams feature. */
	195	#define SYSV_STREAMS
	196
	197	/* This definition was suggested for next release.
	198	So give it a try. */
	199	#define HAVE_SOCKETS
5cb70bb5	200
ca493964	201	#ifndef IRIX6
5bf62b08 RS	202	#define bcopy(src,dst,n) memmove (dst,src,n)
	203	#define bcmp(src,dst,n) memcmp (src,dst,n)
	204	#define bzero(s,n) memset (s,0,n)
ca493964	205	#endif
c42b4fab GM	206
	207	/* Markus Weiand <weiand@khof.com> says this is needed for Motif on
	208	SINIX. */
	209	#undef LIBS_SYSTEM
	210	#define LIBS_SYSTEM -lgen