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3a707ba5 | 1 | /* This file is the configuration file for Linux-based GNU systems |
72bba9f2 | 2 | Copyright (C) 1985, 86, 92, 94, 96, 1999, 2002 Free Software Foundation, Inc. |
566e3587 JB |
3 | |
4 | This file is part of GNU Emacs. | |
5 | ||
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 2, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GNU Emacs is distributed in the hope that it will be useful, | |
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, |
19 | Boston, MA 02111-1307, USA. */ | |
566e3587 | 20 | |
b49ef455 JB |
21 | /* This file was put together by Michael K. Johnson and Rik Faith. */ |
22 | ||
566e3587 JB |
23 | |
24 | /* | |
25 | * Define symbols to identify the version of Unix this is. | |
26 | * Define all the symbols that apply correctly. | |
27 | */ | |
28 | ||
29 | /* #define UNIPLUS */ | |
30 | /* #define USG5 */ | |
31 | #define USG | |
8e4c450d | 32 | /* #define BSD_SYSTEM */ |
566e3587 | 33 | #define LINUX |
8db5530a | 34 | #define GNU_LINUX |
566e3587 JB |
35 | |
36 | /* SYSTEM_TYPE should indicate the kind of system you are using. | |
37 | It sets the Lisp variable system-type. */ | |
38 | ||
3a707ba5 | 39 | #define SYSTEM_TYPE "gnu/linux" /* All the best software is free. */ |
566e3587 | 40 | |
65953053 RS |
41 | /* Check the version number of Linux--if it is at least 1.2.0, |
42 | it is safe to use SIGIO. */ | |
43 | #ifndef NOT_C_CODE | |
44 | #ifdef emacs | |
b764619d | 45 | #ifdef HAVE_LINUX_VERSION_H |
65953053 | 46 | #include <linux/version.h> |
566e3587 | 47 | |
65953053 RS |
48 | #if LINUX_VERSION_CODE > 0x10200 |
49 | #define LINUX_SIGIO_DOES_WORK | |
aa7fcbb0 | 50 | #endif /* LINUX_VERSION_CODE > 0x10200 */ |
2e38d862 AS |
51 | #if LINUX_VERSION_CODE >= 0x20000 |
52 | #define LINUX_MAP_SHARED_DOES_WORK | |
53 | #endif /* LINUX_VERSION_CODE >= 0x20000 */ | |
b764619d | 54 | #endif /* HAVE_LINUX_VERSION_H */ |
aa7fcbb0 RS |
55 | #endif /* emacs */ |
56 | #endif /* NOT_C_CODE */ | |
566e3587 | 57 | |
71125fb8 GM |
58 | #if defined HAVE_GRANTPT |
59 | #define UNIX98_PTYS | |
566e3587 | 60 | |
71125fb8 GM |
61 | /* Run only once. We need a `for'-loop because the code uses |
62 | `continue'. */ | |
566e3587 | 63 | |
71125fb8 | 64 | #define PTY_ITERATION for (i = 0; i < 1; i++) |
fdc5e0fc | 65 | |
71125fb8 GM |
66 | #ifdef HAVE_GETPT |
67 | #define PTY_NAME_SPRINTF | |
68 | #define PTY_OPEN fd = getpt () | |
69 | #else /* not HAVE_GETPT */ | |
70 | #define PTY_NAME_SPRINTF strcpy (pty_name, "/dev/ptmx"); | |
71 | #endif /* not HAVE_GETPT */ | |
72 | ||
73 | /* Note that grantpt and unlockpt may fork. We must block SIGCHLD to | |
74 | prevent sigchld_handler from intercepting the child's death. */ | |
75 | ||
76 | #define PTY_TTY_NAME_SPRINTF \ | |
77 | { \ | |
78 | char *ptyname; \ | |
79 | \ | |
80 | sigblock (sigmask (SIGCHLD)); \ | |
81 | if (grantpt (fd) == -1 || unlockpt (fd) == -1 \ | |
82 | || !(ptyname = ptsname(fd))) \ | |
83 | { \ | |
84 | sigunblock (sigmask (SIGCHLD)); \ | |
85 | close (fd); \ | |
86 | return -1; \ | |
87 | } \ | |
88 | strncpy (pty_name, ptyname, sizeof (pty_name)); \ | |
89 | pty_name[sizeof (pty_name) - 1] = 0; \ | |
90 | sigunblock (sigmask (SIGCHLD)); \ | |
91 | } | |
fdc5e0fc | 92 | |
dacbb818 | 93 | #else /* not HAVE_GRANTPT */ |
fdc5e0fc | 94 | |
71125fb8 GM |
95 | /* Letter to use in finding device name of first pty, |
96 | if system supports pty's. 'p' means it is /dev/ptyp0 */ | |
fdc5e0fc | 97 | |
71125fb8 | 98 | #define FIRST_PTY_LETTER 'p' |
fdc5e0fc | 99 | |
71125fb8 | 100 | #endif /* not HAVE_GRANDPT */ |
fdc5e0fc | 101 | |
71125fb8 GM |
102 | /* Define HAVE_TERMIOS if the system provides POSIX-style |
103 | functions and macros for terminal control. */ | |
566e3587 JB |
104 | |
105 | #define HAVE_TERMIOS | |
106 | ||
71125fb8 | 107 | /* Define HAVE_PTYS if the system supports pty devices. */ |
566e3587 JB |
108 | |
109 | #define HAVE_PTYS | |
110 | ||
dad29761 | 111 | #define HAVE_SOCKETS |
566e3587 JB |
112 | |
113 | /* Define this symbol if your system has the functions bcopy, etc. */ | |
114 | ||
115 | #define BSTRING | |
116 | ||
117 | /* subprocesses should be defined if you want to | |
118 | have code for asynchronous subprocesses | |
119 | (as used in M-x compile and M-x shell). | |
120 | This is generally OS dependent, and not supported | |
121 | under most USG systems. */ | |
122 | ||
123 | #define subprocesses | |
124 | ||
125 | /* define MAIL_USE_FLOCK if the mailer uses flock | |
126 | to interlock access to /usr/spool/mail/$USER. | |
127 | The alternative is that a lock file named | |
128 | /usr/spool/mail/$USER.lock. */ | |
129 | ||
3a707ba5 RS |
130 | /* On GNU/Linux systems, both methods are used by various mail |
131 | programs. I assume that most people are using newer mailers that | |
132 | have heard of flock. Change this if you need to. */ | |
828a3791 DL |
133 | /* Debian contains a patch which says: ``On Debian/GNU/Linux systems, |
134 | configure gets the right answers, and that means *NOT* using flock. | |
135 | Using flock is guaranteed to be the wrong thing. See Debian Policy | |
136 | for details.'' and then uses `#ifdef DEBIAN'. Unfortunately the | |
137 | Debian maintainer hasn't provided a clean fix for Emacs. | |
138 | movemail.c will use `maillock' when MAILDIR, HAVE_LIBMAIL and | |
139 | HAVE_MAILLOCK_H are defined, so the following appears to be the | |
140 | correct logic. -- fx */ | |
141 | ||
142 | #if !(defined (HAVE_LIBMAIL) && defined (HAVE_MAILLOCK_H)) | |
566e3587 | 143 | #define MAIL_USE_FLOCK |
828a3791 | 144 | #endif |
566e3587 JB |
145 | |
146 | /* Define CLASH_DETECTION if you want lock files to be written | |
147 | so that Emacs can tell instantly when you try to modify | |
148 | a file that someone else has modified in his Emacs. */ | |
149 | ||
b2e209ba | 150 | #define CLASH_DETECTION |
566e3587 JB |
151 | |
152 | /* Here, on a separate page, add any special hacks needed | |
153 | to make Emacs work on this system. For example, | |
154 | you might define certain system call names that don't | |
155 | exist on your system, or that do different things on | |
156 | your system and must be used only through an encapsulation | |
157 | (Which you should place, by convention, in sysdep.c). */ | |
158 | \f | |
566e3587 JB |
159 | /* If you mount the proc file system somewhere other than /proc |
160 | you will have to uncomment the following and make the proper | |
161 | changes */ | |
162 | ||
163 | /* #define LINUX_LDAV_FILE "/proc/loadavg" */ | |
164 | ||
fde448f4 | 165 | /* This is needed for dispnew.c:update_frame */ |
566e3587 | 166 | |
5e5623c2 | 167 | #ifdef emacs |
a9c82aaf | 168 | #include <stdio.h> /* Get the definition of _IO_STDIO_H. */ |
4dee6d0d | 169 | #if defined(_IO_STDIO_H) || defined(_STDIO_USES_IOSTREAM) |
5e5623c2 | 170 | /* new C libio names */ |
c2c3f859 | 171 | #define GNU_LIBRARY_PENDING_OUTPUT_COUNT(FILE) \ |
5e5623c2 RS |
172 | ((FILE)->_IO_write_ptr - (FILE)->_IO_write_base) |
173 | #else /* !_IO_STDIO_H */ | |
174 | /* old C++ iostream names */ | |
c2c3f859 | 175 | #define GNU_LIBRARY_PENDING_OUTPUT_COUNT(FILE) \ |
5e5623c2 RS |
176 | ((FILE)->_pptr - (FILE)->_pbase) |
177 | #endif /* !_IO_STDIO_H */ | |
178 | #endif /* emacs */ | |
566e3587 | 179 | |
5101db23 | 180 | /* Ask GCC where to find libgcc.a. */ |
08ddf771 | 181 | #define LIB_GCC `$(CC) $(C_SWITCH_X_SITE) -print-libgcc-file-name` |
5101db23 | 182 | |
4dee6d0d | 183 | #ifndef __ELF__ |
3a707ba5 | 184 | /* GNU/Linux usually has crt0.o in a non-standard place */ |
566e3587 | 185 | #define START_FILES pre-crt0.o /usr/lib/crt0.o |
4dee6d0d | 186 | #else |
01b79236 | 187 | #define START_FILES pre-crt0.o /usr/lib/crt1.o /usr/lib/crti.o |
4dee6d0d | 188 | #endif |
566e3587 | 189 | |
588a9a3e RS |
190 | #ifdef __ELF__ |
191 | /* Here is how to find X Windows. LD_SWITCH_X_SITE_AUX gives an -R option | |
192 | says where to find X windows at run time. */ | |
a28c4a8e | 193 | |
f649aa04 RS |
194 | #ifdef __mips__ |
195 | #define LD_SWITCH_SYSTEM -G 0 LD_SWITCH_X_SITE_AUX | |
196 | #else | |
588a9a3e | 197 | #define LD_SWITCH_SYSTEM LD_SWITCH_X_SITE_AUX |
f649aa04 | 198 | #endif /* __mips__ */ |
854ad2d5 AS |
199 | |
200 | /* Link temacs with -z nocombreloc so that unexec works right, whether or | |
75bec752 | 201 | not -z combreloc is the default. GNU ld ignores unknown -z KEYWORD |
854ad2d5 AS |
202 | switches, so this also works with older versions that don't implement |
203 | -z combreloc. */ | |
204 | #define LD_SWITCH_SYSTEM_TEMACS -z nocombreloc | |
588a9a3e RS |
205 | #endif /* __ELF__ */ |
206 | ||
3a707ba5 RS |
207 | /* As of version 1.1.51, Linux did not actually implement SIGIO. |
208 | But it works in newer versions. */ | |
566e3587 | 209 | #ifdef emacs |
65953053 RS |
210 | #ifdef LINUX_SIGIO_DOES_WORK |
211 | #define INTERRUPT_INPUT | |
212 | #else | |
bb7b4368 | 213 | #define BROKEN_SIGIO |
0f2256ef RS |
214 | /* Some versions of Linux define SIGURG and SIGPOLL as aliases for SIGIO. |
215 | This prevents lossage in process.c. */ | |
bb7b4368 PE |
216 | #define BROKEN_SIGURG |
217 | #define BROKEN_SIGPOLL | |
566e3587 | 218 | #endif |
65953053 | 219 | #endif |
566e3587 JB |
220 | |
221 | /* This is needed for sysdep.c */ | |
222 | ||
566e3587 JB |
223 | #define NO_SIOCTL_H /* don't have sioctl.h */ |
224 | ||
813319d0 | 225 | #define HAVE_WAIT_HEADER |
566e3587 | 226 | |
566e3587 | 227 | #define SYSV_SYSTEM_DIR /* use dirent.h */ |
566e3587 | 228 | |
1abbab7a | 229 | #define POSIX /* affects getpagesize.h and systty.h */ |
566e3587 JB |
230 | #define POSIX_SIGNALS |
231 | ||
566e3587 JB |
232 | /* Best not to include -lg, unless it is last on the command line */ |
233 | #define LIBS_DEBUG | |
4dee6d0d | 234 | #ifndef __ELF__ |
566e3587 | 235 | #define LIB_STANDARD -lc /* avoid -lPW */ |
4dee6d0d | 236 | #else |
08ddf771 | 237 | #undef LIB_GCC |
4dee6d0d | 238 | #define LIB_GCC |
01b79236 | 239 | #define LIB_STANDARD -lgcc -lc -lgcc /usr/lib/crtn.o |
4dee6d0d | 240 | #endif |
3233bbe1 | 241 | |
6f10bc9d RS |
242 | /* Don't use -g in test compiles in configure. |
243 | This is so we will use the same shared libs for that linking | |
244 | that are used when linking temacs. */ | |
245 | #ifdef THIS_IS_CONFIGURE | |
246 | #define C_DEBUG_SWITCH | |
247 | #endif | |
248 | ||
9e479734 JB |
249 | /* Let's try this out, just in case. |
250 | Nah. Rik Faith <faith@cs.unc.edu> says it doesn't work well. */ | |
251 | /* #define SIGNALS_VIA_CHARACTERS */ | |
9199fa7f JB |
252 | |
253 | /* Rob Malouf <malouf@csli.stanford.edu> says: | |
254 | SYSV IPC is standard a standard part of Linux since version 0.99pl10, | |
255 | and is a very common addition to previous versions. */ | |
cafdb68a RS |
256 | |
257 | #ifdef TERM | |
1077bc04 | 258 | #define LIBS_SYSTEM -lclient |
cafdb68a RS |
259 | #define C_SWITCH_SYSTEM -D_BSD_SOURCE -I/usr/src/term |
260 | #else | |
edb0cf8d RS |
261 | /* alane@wozzle.linet.org says that -lipc is not a separate library, |
262 | since libc-4.4.1. So -lipc was deleted. */ | |
1077bc04 | 263 | #define LIBS_SYSTEM |
e7b6b572 DL |
264 | /* _BSD_SOURCE is redundant, at least in glibc2, since we define |
265 | _GNU_SOURCE. Left in in case it's relevant to libc5 systems and | |
266 | anyone's still using Emacs on those. --fx 2002-12-14 */ | |
f83a1ae3 | 267 | #define C_SWITCH_SYSTEM -D_BSD_SOURCE |
cafdb68a RS |
268 | #endif |
269 | ||
c7ce28ce RS |
270 | /* Paul Abrahams <abrahams@equinox.shaysnet.com> says this is needed. */ |
271 | #define LIB_MOTIF -lXm -lXpm | |
272 | ||
be1d1a1a | 273 | #ifdef HAVE_LIBNCURSES |
65953053 | 274 | #define TERMINFO |
565b8b0d | 275 | #define LIBS_TERMCAP -lncurses |
65953053 RS |
276 | #endif |
277 | ||
9199fa7f | 278 | #define HAVE_SYSVIPC |
b04101bb | 279 | |
4dee6d0d KH |
280 | #ifdef __ELF__ |
281 | #define UNEXEC unexelf.o | |
2e38d862 | 282 | #ifndef LINUX_MAP_SHARED_DOES_WORK |
baea3bdd | 283 | #define UNEXEC_USE_MAP_PRIVATE |
4dee6d0d | 284 | #endif |
2e38d862 | 285 | #endif |
4dee6d0d | 286 | |
8427dec9 RS |
287 | #ifdef LINUX_QMAGIC |
288 | ||
289 | #define HAVE_TEXT_START | |
290 | #define UNEXEC unexsunos4.o | |
291 | #define N_PAGSIZ(x) PAGE_SIZE | |
292 | ||
293 | #else /* not LINUX_QMAGIC */ | |
294 | ||
b04101bb RS |
295 | #define A_TEXT_OFFSET(hdr) (N_MAGIC(hdr) == QMAGIC ? sizeof (struct exec) : 0) |
296 | #define A_TEXT_SEEK(hdr) (N_TXTOFF(hdr) + A_TEXT_OFFSET(hdr)) | |
297 | #define ADJUST_EXEC_HEADER \ | |
298 | unexec_text_start = N_TXTADDR(ohdr) + A_TEXT_OFFSET(ohdr) | |
967ac200 | 299 | |
8427dec9 RS |
300 | #endif /* not LINUX_QMAGIC */ |
301 | ||
6f10bc9d | 302 | #if 0 |
967ac200 RS |
303 | /* In 19.23 and 19.24, configure sometimes fails to define these. |
304 | It has to do with the fact that configure uses CFLAGS when linking | |
305 | while Makefile.in.in (erroneously) fails to do so when linking temacs. */ | |
306 | #ifndef HAVE_GETTIMEOFDAY | |
307 | #define HAVE_GETTIMEOFDAY | |
308 | #endif | |
309 | #ifndef HAVE_MKDIR | |
310 | #define HAVE_MKDIR | |
311 | #endif | |
312 | #ifndef HAVE_RMDIR | |
313 | #define HAVE_RMDIR | |
314 | #endif | |
315 | #ifndef HAVE_XSCREENNUMBEROFSCREEN | |
316 | #define HAVE_XSCREENNUMBEROFSCREEN | |
317 | #endif | |
639f52d8 RS |
318 | #endif /* 0 */ |
319 | ||
320 | /* This is to work around mysterious gcc failures in some system versions. | |
321 | It is unlikely that Emacs changes will work around this problem; | |
322 | therefore, this should remain permanently. */ | |
e3b89505 RS |
323 | #ifndef HAVE_XRMSETDATABASE |
324 | #define HAVE_XRMSETDATABASE | |
325 | #endif | |
e2000885 RS |
326 | |
327 | /* The regex.o routines are a part of the GNU C-library used with Linux. */ | |
ea18e284 RS |
328 | /* However, sometimes they disagree with the src/regex.h that comes with Emacs, |
329 | and that can make trouble in etags.c because it gets the regex.h from Emacs | |
330 | and the function definitions in libc. So turn this off. */ | |
331 | /* #define REGEXP_IN_LIBC */ | |
332 | ||
3743c30c RS |
333 | /* Use BSD process groups, but use setpgid() instead of setpgrp() to |
334 | actually set a process group. */ | |
335 | ||
336 | #define BSD_PGRPS | |
e0a6ee5e | 337 | |
2327e4a0 GM |
338 | #define NARROWPROTO 1 |
339 | ||
e0a6ee5e RS |
340 | /* Use mmap directly for allocating larger buffers. */ |
341 | #ifdef DOUG_LEA_MALLOC | |
342 | #undef REL_ALLOC | |
343 | #endif | |
bb15bd9a DL |
344 | |
345 | /* Tell that garbage collector that setjmp is known to save all | |
346 | registers relevant for conservative garbage collection in the | |
347 | jmp_buf. */ | |
e7b6b572 DL |
348 | /* Not all the architectures are tested, but there are Debian packages |
349 | for SCM and/or Guile on them, so the technique must work. See also | |
350 | comments in alloc.c concerning setjmp and gcc. Fixme: it's | |
351 | probably safe to make this conditional just on GCC, except for ia64 | |
352 | register window-flushing. */ | |
a8f77aaa GM |
353 | /* Don't use #cpu here since in newest development versions of GCC, |
354 | we must call cpp with -traditional, and that disables #cpu. */ | |
355 | ||
e7b6b572 DL |
356 | #if defined __i386__ || defined __sparc__ || defined __mc68000__ \ |
357 | || defined __alpha__ || defined __mips__ || defined __s390__ \ | |
bb6a9650 | 358 | || defined __arm__ || defined __powerpc__ || defined __amd64__ |
bb15bd9a | 359 | #define GC_SETJMP_WORKS 1 |
ecf4d726 | 360 | #define GC_MARK_STACK GC_MAKE_GCPROS_NOOPS |
72bba9f2 AS |
361 | #ifdef __mc68000__ |
362 | #define GC_LISP_OBJECT_ALIGNMENT 2 | |
363 | #endif | |
bb15bd9a | 364 | #endif |
ab5796a9 MB |
365 | |
366 | /* arch-tag: 6244ea2a-abd0-44ec-abec-ff3dcc9afea9 | |
367 | (do not change this comment) */ |