[bpt/emacs.git] / src / s / gnu-linux.h

/* This file is the configuration file for Linux-based GNU systems
   Copyright (C) 1985, 1986, 1992, 1994, 1996, 1999, 2001, 2002, 2003, 2004,
                 2005, 2006, 2007, 2008  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 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/>.  */

/* This file was put together by Michael K. Johnson and Rik Faith.  */


/*
 *	Define symbols to identify the version of Unix this is.
 *	Define all the symbols that apply correctly.
 */

/* #define UNIPLUS */
/* #define USG5 */
#define USG
/* #define BSD_SYSTEM */
#define LINUX
#define GNU_LINUX

/* SYSTEM_TYPE should indicate the kind of system you are using.
 It sets the Lisp variable system-type.  */

#define SYSTEM_TYPE "gnu/linux"		/* All the best software is free. */

#ifndef NOT_C_CODE
#ifdef emacs
#ifdef HAVE_LINUX_VERSION_H
#include <linux/version.h>

#if LINUX_VERSION_CODE >= 0x20400
#define LINUX_SIGNALS_VIA_CHARACTERS_DOES_WORK
#endif /* LINUX_VERSION_CODE >= 0x20400 */
#endif /* HAVE_LINUX_VERSION_H */
#endif /* emacs */
#endif /* NOT_C_CODE */

#if defined HAVE_GRANTPT
#define UNIX98_PTYS

/* Run only once.  We need a `for'-loop because the code uses
   `continue'.  */

#define PTY_ITERATION	for (i = 0; i < 1; i++)

#ifdef HAVE_GETPT
#define PTY_NAME_SPRINTF
#define PTY_OPEN fd = getpt ()
#else /* not HAVE_GETPT */
#define PTY_NAME_SPRINTF strcpy (pty_name, "/dev/ptmx");
#endif /* not HAVE_GETPT */

/* Note that grantpt and unlockpt may fork.  We must block SIGCHLD to
   prevent sigchld_handler from intercepting the child's death.  */

#define PTY_TTY_NAME_SPRINTF				\
  {							\
    char *ptyname;					\
							\
    sigblock (sigmask (SIGCHLD));			\
    if (grantpt (fd) == -1 || unlockpt (fd) == -1	\
        || !(ptyname = ptsname(fd)))			\
      {							\
	sigunblock (sigmask (SIGCHLD));			\
	close (fd);					\
	return -1;					\
      }							\
    strncpy (pty_name, ptyname, sizeof (pty_name));	\
    pty_name[sizeof (pty_name) - 1] = 0;		\
    sigunblock (sigmask (SIGCHLD));			\
  }

#else /* not HAVE_GRANTPT */

/* Letter to use in finding device name of first pty,
   if system supports pty's.  'p' means it is /dev/ptyp0  */

#define FIRST_PTY_LETTER 'p'

#endif  /* not HAVE_GRANDPT */

/*  Define HAVE_TERMIOS if the system provides POSIX-style
    functions and macros for terminal control.  */

#define HAVE_TERMIOS

/* Define HAVE_PTYS if the system supports pty devices. */

#define HAVE_PTYS

#define HAVE_SOCKETS

/* Define this symbol if your system has the functions bcopy, etc. */

#define BSTRING

/* subprocesses should be defined if you want to
   have code for asynchronous subprocesses
   (as used in M-x compile and M-x shell).
   This is generally OS dependent, and not supported
   under most USG systems. */

#define subprocesses

/* define MAIL_USE_FLOCK if the mailer uses flock
   to interlock access to /usr/spool/mail/$USER.
   The alternative is that a lock file named
   /usr/spool/mail/$USER.lock.  */

/* On GNU/Linux systems, both methods are used by various mail
   programs.  I assume that most people are using newer mailers that
   have heard of flock.  Change this if you need to. */
/* Debian contains a patch which says: ``On Debian/GNU/Linux systems,
   configure gets the right answers, and that means *NOT* using flock.
   Using flock is guaranteed to be the wrong thing. See Debian Policy
   for details.'' and then uses `#ifdef DEBIAN'.  Unfortunately the
   Debian maintainer hasn't provided a clean fix for Emacs.
   movemail.c will use `maillock' when MAILDIR, HAVE_LIBMAIL and
   HAVE_MAILLOCK_H are defined, so the following appears to be the
   correct logic.  -- fx */
/* We must check for HAVE_LIBLOCKFILE too, as movemail does.
   liblockfile is a Free Software replacement for libmail, used on
   Debian systems and elsewhere. -rfr */

#if !((defined (HAVE_LIBMAIL) || defined (HAVE_LIBLOCKFILE)) &&	\
      defined (HAVE_MAILLOCK_H))
#define MAIL_USE_FLOCK
#endif

/* Define CLASH_DETECTION if you want lock files to be written
   so that Emacs can tell instantly when you try to modify
   a file that someone else has modified in his Emacs.  */

#define CLASH_DETECTION

/* Here, on a separate page, add any special hacks needed
   to make Emacs work on this system.  For example,
   you might define certain system call names that don't
   exist on your system, or that do different things on
   your system and must be used only through an encapsulation
   (Which you should place, by convention, in sysdep.c).  */
\f
/* If you mount the proc file system somewhere other than /proc
   you will have to uncomment the following and make the proper
   changes */

/* #define LINUX_LDAV_FILE "/proc/loadavg" */

/* This is needed for dispnew.c:update_frame */

#ifdef emacs
#include <stdio.h>  /* Get the definition of _IO_STDIO_H.  */
#if defined(_IO_STDIO_H) || defined(_STDIO_USES_IOSTREAM)
/* new C libio names */
#define GNU_LIBRARY_PENDING_OUTPUT_COUNT(FILE) \
  ((FILE)->_IO_write_ptr - (FILE)->_IO_write_base)
#else /* !_IO_STDIO_H */
/* old C++ iostream names */
#define GNU_LIBRARY_PENDING_OUTPUT_COUNT(FILE) \
  ((FILE)->_pptr - (FILE)->_pbase)
#endif /* !_IO_STDIO_H */
#endif /* emacs */

/* Ask GCC where to find libgcc.a.  */
#define LIB_GCC `$(CC) $(C_SWITCH_X_SITE) -print-libgcc-file-name`

#define START_FILES pre-crt0.o /usr/lib/crt1.o /usr/lib/crti.o

/* Here is how to find X Windows.  LD_SWITCH_X_SITE_AUX gives an -R option
   says where to find X windows at run time.  */

#ifdef __mips__
#define LD_SWITCH_SYSTEM -G 0 LD_SWITCH_X_SITE_AUX
#else
#define LD_SWITCH_SYSTEM LD_SWITCH_X_SITE_AUX
#endif /* __mips__ */

/* Link temacs with -z nocombreloc so that unexec works right, whether or
   not -z combreloc is the default.  GNU ld ignores unknown -z KEYWORD
   switches, so this also works with older versions that don't implement
   -z combreloc.  */
#define LD_SWITCH_SYSTEM_TEMACS -z nocombreloc

#ifdef emacs
#define INTERRUPT_INPUT
#endif

/* This is needed for sysdep.c */

#define NO_SIOCTL_H           /* don't have sioctl.h */

#define HAVE_WAIT_HEADER

#define SYSV_SYSTEM_DIR       /* use dirent.h */

#define POSIX                 /* affects getpagesize.h and systty.h */
#define POSIX_SIGNALS

/* Best not to include -lg, unless it is last on the command line */
#define LIBS_DEBUG
#undef LIB_GCC
#define LIB_GCC
#define LIB_STANDARD -lgcc -lc -lgcc /usr/lib/crtn.o

/* Don't use -g in test compiles in configure.
   This is so we will use the same shared libs for that linking
   that are used when linking temacs.  */
#ifdef THIS_IS_CONFIGURE
#define C_DEBUG_SWITCH
#endif

/* 21 Jun 06: Eric Hanchrow <offby1@blarg.net> says this works.  */
#ifdef LINUX_SIGNALS_VIA_CHARACTERS_DOES_WORK
#define SIGNALS_VIA_CHARACTERS
#endif

/* Rob Malouf <malouf@csli.stanford.edu> says:
   SYSV IPC is standard a standard part of Linux since version 0.99pl10,
   and is a very common addition to previous versions.  */

#ifdef TERM
#define LIBS_SYSTEM -lclient
#define C_SWITCH_SYSTEM -D_BSD_SOURCE -I/usr/src/term
#else
/* alane@wozzle.linet.org says that -lipc is not a separate library,
   since libc-4.4.1.  So -lipc was deleted.  */
#define LIBS_SYSTEM
/* _BSD_SOURCE is redundant, at least in glibc2, since we define
   _GNU_SOURCE.  Left in in case it's relevant to libc5 systems and
   anyone's still using Emacs on those.  --fx 2002-12-14  */
#define C_SWITCH_SYSTEM -D_BSD_SOURCE
#endif

/* Paul Abrahams <abrahams@equinox.shaysnet.com> says this is needed.  */
#define LIB_MOTIF -lXm -lXpm

#ifdef HAVE_LIBNCURSES
#define TERMINFO
#define LIBS_TERMCAP -lncurses
#endif

#define HAVE_SYSVIPC

#define UNEXEC unexelf.o

#define A_TEXT_OFFSET(hdr) (N_MAGIC(hdr) == QMAGIC ? sizeof (struct exec) : 0)
#define A_TEXT_SEEK(hdr) (N_TXTOFF(hdr) + A_TEXT_OFFSET(hdr))
#define ADJUST_EXEC_HEADER \
  unexec_text_start = N_TXTADDR(ohdr) + A_TEXT_OFFSET(ohdr)

/* This is to work around mysterious gcc failures in some system versions.
   It is unlikely that Emacs changes will work around this problem;
   therefore, this should remain permanently.  */
#ifndef HAVE_XRMSETDATABASE
#define HAVE_XRMSETDATABASE
#endif

/* Use BSD process groups, but use setpgid() instead of setpgrp() to
   actually set a process group. */

#define BSD_PGRPS

#define NARROWPROTO 1

/* Use mmap directly for allocating larger buffers.  */
#ifdef DOUG_LEA_MALLOC
#undef REL_ALLOC
#endif

/* Tell that garbage collector that setjmp is known to save all
   registers relevant for conservative garbage collection in the
   jmp_buf.  */
/* Not all the architectures are tested, but there are Debian packages
   for SCM and/or Guile on them, so the technique must work.  See also
   comments in alloc.c concerning setjmp and gcc.  Fixme:  it's
   probably safe to make this conditional just on GCC, except for ia64
   register window-flushing.  */
/* Don't use #cpu here since in newest development versions of GCC,
   we must call cpp with -traditional, and that disables #cpu.  */

#if defined __i386__ || defined __sparc__ || defined __mc68000__ \
    || defined __alpha__ || defined __mips__ || defined __s390__ \
    || defined __arm__ || defined __powerpc__ || defined __amd64__ \
    || defined __ia64__
#define GC_SETJMP_WORKS 1
#define GC_MARK_STACK GC_MAKE_GCPROS_NOOPS
#ifdef __mc68000__
#define GC_LISP_OBJECT_ALIGNMENT 2
#endif
#ifdef __ia64__
#define GC_MARK_SECONDARY_STACK()				\
  do {								\
    extern void *__libc_ia64_register_backing_store_base;	\
    __builtin_ia64_flushrs ();					\
    mark_memory (__libc_ia64_register_backing_store_base,	\
		 __builtin_ia64_bsp (), 0);			\
  } while (0)
#endif
#endif

/* arch-tag: 6244ea2a-abd0-44ec-abec-ff3dcc9afea9
   (do not change this comment) */
Commit	Line	Data
3a707ba5	1	/* This file is the configuration file for Linux-based GNU systems
429ab54e	2	Copyright (C) 1985, 1986, 1992, 1994, 1996, 1999, 2001, 2002, 2003, 2004,
01122546	3	2005, 2006, 2007, 2008 Free Software Foundation, Inc.
566e3587 JB	4
	5	This file is part of GNU Emacs.
	6
4b158629	7	GNU Emacs is free software: you can redistribute it and/or modify
566e3587	8	it under the terms of the GNU General Public License as published by
4b158629 GM	9	the Free Software Foundation, either version 3 of the License, or
4b158629 GM	10	(at your option) any later version.
566e3587 JB	11
	12	GNU Emacs is distributed in the hope that it will be useful,
	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	GNU General Public License for more details.
	16
	17	You should have received a copy of the GNU General Public License
4b158629	18	along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
566e3587	19
b49ef455 JB	20	/* This file was put together by Michael K. Johnson and Rik Faith. */
b49ef455 JB	21
566e3587 JB	22
	23	/*
	24	* Define symbols to identify the version of Unix this is.
	25	* Define all the symbols that apply correctly.
	26	*/
	27
	28	/* #define UNIPLUS */
	29	/* #define USG5 */
	30	#define USG
8e4c450d	31	/* #define BSD_SYSTEM */
566e3587	32	#define LINUX
8db5530a	33	#define GNU_LINUX
566e3587 JB	34
	35	/* SYSTEM_TYPE should indicate the kind of system you are using.
	36	It sets the Lisp variable system-type. */
	37
3a707ba5	38	#define SYSTEM_TYPE "gnu/linux" /* All the best software is free. */
566e3587	39
65953053 RS	40	#ifndef NOT_C_CODE
65953053 RS	41	#ifdef emacs
b764619d	42	#ifdef HAVE_LINUX_VERSION_H
65953053	43	#include <linux/version.h>
566e3587	44
85a71b37 KS	45	#if LINUX_VERSION_CODE >= 0x20400
	46	#define LINUX_SIGNALS_VIA_CHARACTERS_DOES_WORK
	47	#endif /* LINUX_VERSION_CODE >= 0x20400 */
b764619d	48	#endif /* HAVE_LINUX_VERSION_H */
aa7fcbb0 RS	49	#endif /* emacs */
aa7fcbb0 RS	50	#endif /* NOT_C_CODE */
566e3587	51
71125fb8 GM	52	#if defined HAVE_GRANTPT
71125fb8 GM	53	#define UNIX98_PTYS
566e3587	54
71125fb8 GM	55	/* Run only once. We need a `for'-loop because the code uses
71125fb8 GM	56	`continue'. */
566e3587	57
71125fb8	58	#define PTY_ITERATION for (i = 0; i < 1; i++)
fdc5e0fc	59
71125fb8 GM	60	#ifdef HAVE_GETPT
	61	#define PTY_NAME_SPRINTF
	62	#define PTY_OPEN fd = getpt ()
	63	#else /* not HAVE_GETPT */
	64	#define PTY_NAME_SPRINTF strcpy (pty_name, "/dev/ptmx");
	65	#endif /* not HAVE_GETPT */
	66
	67	/* Note that grantpt and unlockpt may fork. We must block SIGCHLD to
	68	prevent sigchld_handler from intercepting the child's death. */
	69
	70	#define PTY_TTY_NAME_SPRINTF \
	71	{ \
	72	char *ptyname; \
	73	\
	74	sigblock (sigmask (SIGCHLD)); \
	75	if (grantpt (fd) == -1 \|\| unlockpt (fd) == -1 \
	76	\|\| !(ptyname = ptsname(fd))) \
	77	{ \
	78	sigunblock (sigmask (SIGCHLD)); \
	79	close (fd); \
	80	return -1; \
	81	} \
	82	strncpy (pty_name, ptyname, sizeof (pty_name)); \
	83	pty_name[sizeof (pty_name) - 1] = 0; \
	84	sigunblock (sigmask (SIGCHLD)); \
	85	}
fdc5e0fc	86
dacbb818	87	#else /* not HAVE_GRANTPT */
fdc5e0fc	88
71125fb8 GM	89	/* Letter to use in finding device name of first pty,
71125fb8 GM	90	if system supports pty's. 'p' means it is /dev/ptyp0 */
fdc5e0fc	91
71125fb8	92	#define FIRST_PTY_LETTER 'p'
fdc5e0fc	93
71125fb8	94	#endif /* not HAVE_GRANDPT */
fdc5e0fc	95
71125fb8 GM	96	/* Define HAVE_TERMIOS if the system provides POSIX-style
71125fb8 GM	97	functions and macros for terminal control. */
566e3587 JB	98
	99	#define HAVE_TERMIOS
	100
71125fb8	101	/* Define HAVE_PTYS if the system supports pty devices. */
566e3587 JB	102
	103	#define HAVE_PTYS
	104
dad29761	105	#define HAVE_SOCKETS
566e3587 JB	106
	107	/* Define this symbol if your system has the functions bcopy, etc. */
	108
	109	#define BSTRING
	110
	111	/* subprocesses should be defined if you want to
	112	have code for asynchronous subprocesses
	113	(as used in M-x compile and M-x shell).
	114	This is generally OS dependent, and not supported
	115	under most USG systems. */
	116
	117	#define subprocesses
	118
	119	/* define MAIL_USE_FLOCK if the mailer uses flock
	120	to interlock access to /usr/spool/mail/$USER.
	121	The alternative is that a lock file named
	122	/usr/spool/mail/$USER.lock. */
	123
3a707ba5 RS	124	/* On GNU/Linux systems, both methods are used by various mail
	125	programs. I assume that most people are using newer mailers that
	126	have heard of flock. Change this if you need to. */
828a3791 DL	127	/* Debian contains a patch which says: ``On Debian/GNU/Linux systems,
	128	configure gets the right answers, and that means NOT using flock.
	129	Using flock is guaranteed to be the wrong thing. See Debian Policy
	130	for details.'' and then uses `#ifdef DEBIAN'. Unfortunately the
	131	Debian maintainer hasn't provided a clean fix for Emacs.
	132	movemail.c will use `maillock' when MAILDIR, HAVE_LIBMAIL and
	133	HAVE_MAILLOCK_H are defined, so the following appears to be the
	134	correct logic. -- fx */
47a0ee40 RF	135	/* We must check for HAVE_LIBLOCKFILE too, as movemail does.
	136	liblockfile is a Free Software replacement for libmail, used on
	137	Debian systems and elsewhere. -rfr */
828a3791	138
47a0ee40 RF	139	#if !((defined (HAVE_LIBMAIL) \|\| defined (HAVE_LIBLOCKFILE)) && \
47a0ee40 RF	140	defined (HAVE_MAILLOCK_H))
566e3587	141	#define MAIL_USE_FLOCK
828a3791	142	#endif
566e3587 JB	143
	144	/* Define CLASH_DETECTION if you want lock files to be written
	145	so that Emacs can tell instantly when you try to modify
	146	a file that someone else has modified in his Emacs. */
	147
b2e209ba	148	#define CLASH_DETECTION
566e3587 JB	149
	150	/* Here, on a separate page, add any special hacks needed
	151	to make Emacs work on this system. For example,
	152	you might define certain system call names that don't
	153	exist on your system, or that do different things on
	154	your system and must be used only through an encapsulation
	155	(Which you should place, by convention, in sysdep.c). */
	156	\f
566e3587 JB	157	/* If you mount the proc file system somewhere other than /proc
	158	you will have to uncomment the following and make the proper
	159	changes */
	160
	161	/* #define LINUX_LDAV_FILE "/proc/loadavg" */
	162
fde448f4	163	/* This is needed for dispnew.c:update_frame */
566e3587	164
5e5623c2	165	#ifdef emacs
a9c82aaf	166	#include <stdio.h> /* Get the definition of _IO_STDIO_H. */
4dee6d0d	167	#if defined(_IO_STDIO_H) \|\| defined(_STDIO_USES_IOSTREAM)
5e5623c2	168	/* new C libio names */
c2c3f859	169	#define GNU_LIBRARY_PENDING_OUTPUT_COUNT(FILE) \
5e5623c2 RS	170	((FILE)->_IO_write_ptr - (FILE)->_IO_write_base)
	171	#else /* !_IO_STDIO_H */
	172	/* old C++ iostream names */
c2c3f859	173	#define GNU_LIBRARY_PENDING_OUTPUT_COUNT(FILE) \
5e5623c2 RS	174	((FILE)->_pptr - (FILE)->_pbase)
	175	#endif /* !_IO_STDIO_H */
	176	#endif /* emacs */
566e3587	177
5101db23	178	/* Ask GCC where to find libgcc.a. */
08ddf771	179	#define LIB_GCC `$(CC) $(C_SWITCH_X_SITE) -print-libgcc-file-name`
5101db23	180
01b79236	181	#define START_FILES pre-crt0.o /usr/lib/crt1.o /usr/lib/crti.o
566e3587	182
588a9a3e RS	183	/* Here is how to find X Windows. LD_SWITCH_X_SITE_AUX gives an -R option
588a9a3e RS	184	says where to find X windows at run time. */
a28c4a8e	185
f649aa04 RS	186	#ifdef __mips__
	187	#define LD_SWITCH_SYSTEM -G 0 LD_SWITCH_X_SITE_AUX
	188	#else
588a9a3e	189	#define LD_SWITCH_SYSTEM LD_SWITCH_X_SITE_AUX
f649aa04	190	#endif /* __mips__ */
854ad2d5 AS	191
854ad2d5 AS	192	/* Link temacs with -z nocombreloc so that unexec works right, whether or
75bec752	193	not -z combreloc is the default. GNU ld ignores unknown -z KEYWORD
854ad2d5 AS	194	switches, so this also works with older versions that don't implement
	195	-z combreloc. */
	196	#define LD_SWITCH_SYSTEM_TEMACS -z nocombreloc
588a9a3e	197
566e3587	198	#ifdef emacs
65953053	199	#define INTERRUPT_INPUT
65953053	200	#endif
566e3587 JB	201
	202	/* This is needed for sysdep.c */
	203
566e3587 JB	204	#define NO_SIOCTL_H /* don't have sioctl.h */
566e3587 JB	205
813319d0	206	#define HAVE_WAIT_HEADER
566e3587	207
566e3587	208	#define SYSV_SYSTEM_DIR /* use dirent.h */
566e3587	209
1abbab7a	210	#define POSIX /* affects getpagesize.h and systty.h */
566e3587 JB	211	#define POSIX_SIGNALS
566e3587 JB	212
566e3587 JB	213	/* Best not to include -lg, unless it is last on the command line */
566e3587 JB	214	#define LIBS_DEBUG
08ddf771	215	#undef LIB_GCC
4dee6d0d	216	#define LIB_GCC
01b79236	217	#define LIB_STANDARD -lgcc -lc -lgcc /usr/lib/crtn.o
3233bbe1	218
6f10bc9d RS	219	/* Don't use -g in test compiles in configure.
	220	This is so we will use the same shared libs for that linking
	221	that are used when linking temacs. */
	222	#ifdef THIS_IS_CONFIGURE
	223	#define C_DEBUG_SWITCH
	224	#endif
	225
716fd7fb	226	/* 21 Jun 06: Eric Hanchrow <offby1@blarg.net> says this works. */
85a71b37 KS	227	#ifdef LINUX_SIGNALS_VIA_CHARACTERS_DOES_WORK
	228	#define SIGNALS_VIA_CHARACTERS
	229	#endif
9199fa7f JB	230
	231	/* Rob Malouf <malouf@csli.stanford.edu> says:
	232	SYSV IPC is standard a standard part of Linux since version 0.99pl10,
	233	and is a very common addition to previous versions. */
cafdb68a RS	234
cafdb68a RS	235	#ifdef TERM
1077bc04	236	#define LIBS_SYSTEM -lclient
cafdb68a RS	237	#define C_SWITCH_SYSTEM -D_BSD_SOURCE -I/usr/src/term
cafdb68a RS	238	#else
edb0cf8d RS	239	/* alane@wozzle.linet.org says that -lipc is not a separate library,
edb0cf8d RS	240	since libc-4.4.1. So -lipc was deleted. */
1077bc04	241	#define LIBS_SYSTEM
e7b6b572 DL	242	/* _BSD_SOURCE is redundant, at least in glibc2, since we define
	243	_GNU_SOURCE. Left in in case it's relevant to libc5 systems and
	244	anyone's still using Emacs on those. --fx 2002-12-14 */
f83a1ae3	245	#define C_SWITCH_SYSTEM -D_BSD_SOURCE
cafdb68a RS	246	#endif
cafdb68a RS	247
c7ce28ce RS	248	/* Paul Abrahams <abrahams@equinox.shaysnet.com> says this is needed. */
	249	#define LIB_MOTIF -lXm -lXpm
	250
be1d1a1a	251	#ifdef HAVE_LIBNCURSES
65953053	252	#define TERMINFO
565b8b0d	253	#define LIBS_TERMCAP -lncurses
65953053 RS	254	#endif
65953053 RS	255
9199fa7f	256	#define HAVE_SYSVIPC
b04101bb	257
4dee6d0d	258	#define UNEXEC unexelf.o
8427dec9	259
b04101bb RS	260	#define A_TEXT_OFFSET(hdr) (N_MAGIC(hdr) == QMAGIC ? sizeof (struct exec) : 0)
	261	#define A_TEXT_SEEK(hdr) (N_TXTOFF(hdr) + A_TEXT_OFFSET(hdr))
	262	#define ADJUST_EXEC_HEADER \
	263	unexec_text_start = N_TXTADDR(ohdr) + A_TEXT_OFFSET(ohdr)
967ac200	264
639f52d8 RS	265	/* This is to work around mysterious gcc failures in some system versions.
	266	It is unlikely that Emacs changes will work around this problem;
	267	therefore, this should remain permanently. */
e3b89505 RS	268	#ifndef HAVE_XRMSETDATABASE
	269	#define HAVE_XRMSETDATABASE
	270	#endif
e2000885	271
3743c30c RS	272	/* Use BSD process groups, but use setpgid() instead of setpgrp() to
	273	actually set a process group. */
	274
	275	#define BSD_PGRPS
e0a6ee5e	276
2327e4a0 GM	277	#define NARROWPROTO 1
2327e4a0 GM	278
e0a6ee5e RS	279	/* Use mmap directly for allocating larger buffers. */
	280	#ifdef DOUG_LEA_MALLOC
	281	#undef REL_ALLOC
	282	#endif
bb15bd9a DL	283
	284	/* Tell that garbage collector that setjmp is known to save all
	285	registers relevant for conservative garbage collection in the
	286	jmp_buf. */
e7b6b572 DL	287	/* Not all the architectures are tested, but there are Debian packages
	288	for SCM and/or Guile on them, so the technique must work. See also
	289	comments in alloc.c concerning setjmp and gcc. Fixme: it's
	290	probably safe to make this conditional just on GCC, except for ia64
	291	register window-flushing. */
a8f77aaa GM	292	/* Don't use #cpu here since in newest development versions of GCC,
	293	we must call cpp with -traditional, and that disables #cpu. */
	294
e7b6b572 DL	295	#if defined __i386__ \|\| defined __sparc__ \|\| defined __mc68000__ \
e7b6b572 DL	296	\|\| defined __alpha__ \|\| defined __mips__ \|\| defined __s390__ \
e3177e43 AS	297	\|\| defined __arm__ \|\| defined __powerpc__ \|\| defined __amd64__ \
e3177e43 AS	298	\|\| defined __ia64__
bb15bd9a	299	#define GC_SETJMP_WORKS 1
ecf4d726	300	#define GC_MARK_STACK GC_MAKE_GCPROS_NOOPS
72bba9f2 AS	301	#ifdef __mc68000__
	302	#define GC_LISP_OBJECT_ALIGNMENT 2
	303	#endif
e3177e43 AS	304	#ifdef __ia64__
	305	#define GC_MARK_SECONDARY_STACK() \
	306	do { \
	307	extern void *__libc_ia64_register_backing_store_base; \
	308	__builtin_ia64_flushrs (); \
	309	mark_memory (__libc_ia64_register_backing_store_base, \
fbb7c02f	310	__builtin_ia64_bsp (), 0); \
e3177e43 AS	311	} while (0)
e3177e43 AS	312	#endif
bb15bd9a	313	#endif
ab5796a9 MB	314
	315	/* arch-tag: 6244ea2a-abd0-44ec-abec-ff3dcc9afea9
	316	(do not change this comment) */