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5101db23 | 1 | /* This file is the configuration file for GNU/Linux operating systems. |
3a22ee35 | 2 | Copyright (C) 1985, 1986, 1992, 1994 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 | |
18 | the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
b49ef455 JB |
20 | /* This file was put together by Michael K. Johnson and Rik Faith. */ |
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 | |
d391fe09 | 31 | /* #define BSD */ |
566e3587 JB |
32 | #define LINUX |
33 | ||
34 | /* SYSTEM_TYPE should indicate the kind of system you are using. | |
35 | It sets the Lisp variable system-type. */ | |
36 | ||
37 | #define SYSTEM_TYPE "linux" /* All the best software is free. */ | |
38 | ||
39 | /* Emacs can read input using SIGIO and buffering characters itself, | |
40 | or using CBREAK mode and making C-g cause SIGINT. | |
41 | The choice is controlled by the variable interrupt_input. | |
42 | Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO) | |
43 | ||
44 | SIGIO can be used only on systems that implement it (4.2 and 4.3). | |
eb8c3be9 | 45 | CBREAK mode has two disadvantages |
566e3587 JB |
46 | 1) At least in 4.2, it is impossible to handle the Meta key properly. |
47 | I hear that in system V this problem does not exist. | |
48 | 2) Control-G causes output to be discarded. | |
49 | I do not know whether this can be fixed in system V. | |
50 | ||
51 | Another method of doing input is planned but not implemented. | |
52 | It would have Emacs fork off a separate process | |
53 | to read the input and send it to the true Emacs process | |
54 | through a pipe. | |
55 | */ | |
56 | ||
57 | /* There have been suggestions made to add SIGIO to Linux. If this | |
58 | is done, you may, at your discretion, uncomment the line below. | |
59 | */ | |
60 | ||
61 | /* #define INTERRUPT_INPUT */ | |
62 | ||
63 | /* Letter to use in finding device name of first pty, | |
64 | if system supports pty's. 'p' means it is /dev/ptyp0 */ | |
65 | ||
66 | #define FIRST_PTY_LETTER 'p' | |
67 | ||
68 | /* | |
69 | * Define HAVE_TERMIOS if the system provides POSIX-style | |
70 | * functions and macros for terminal control. | |
71 | */ | |
72 | ||
73 | #define HAVE_TERMIOS | |
74 | ||
566e3587 JB |
75 | /* |
76 | * Define HAVE_PTYS if the system supports pty devices. | |
77 | */ | |
78 | ||
79 | #define HAVE_PTYS | |
80 | ||
81 | /* Uncomment this later when other problems are dealt with -mkj */ | |
82 | ||
dad29761 | 83 | #define HAVE_SOCKETS |
566e3587 JB |
84 | |
85 | /* Define this symbol if your system has the functions bcopy, etc. */ | |
86 | ||
87 | #define BSTRING | |
88 | ||
89 | /* subprocesses should be defined if you want to | |
90 | have code for asynchronous subprocesses | |
91 | (as used in M-x compile and M-x shell). | |
92 | This is generally OS dependent, and not supported | |
93 | under most USG systems. */ | |
94 | ||
95 | #define subprocesses | |
96 | ||
97 | /* define MAIL_USE_FLOCK if the mailer uses flock | |
98 | to interlock access to /usr/spool/mail/$USER. | |
99 | The alternative is that a lock file named | |
100 | /usr/spool/mail/$USER.lock. */ | |
101 | ||
102 | /* Both are used in Linux by different mail programs. I assume that most | |
103 | people are using newer mailers that have heard of flock. Change this | |
104 | if you need to. */ | |
105 | ||
106 | #define MAIL_USE_FLOCK | |
107 | ||
108 | /* Define CLASH_DETECTION if you want lock files to be written | |
109 | so that Emacs can tell instantly when you try to modify | |
110 | a file that someone else has modified in his Emacs. */ | |
111 | ||
b2e209ba | 112 | #define CLASH_DETECTION |
566e3587 JB |
113 | |
114 | /* Here, on a separate page, add any special hacks needed | |
115 | to make Emacs work on this system. For example, | |
116 | you might define certain system call names that don't | |
117 | exist on your system, or that do different things on | |
118 | your system and must be used only through an encapsulation | |
119 | (Which you should place, by convention, in sysdep.c). */ | |
120 | \f | |
d391fe09 RS |
121 | /* On POSIX systems the system calls are interruptible by signals |
122 | that the user program has elected to catch. Thus the system call | |
123 | must be retried in these cases. To handle this without massive | |
124 | changes in the source code, we remap the standard system call names | |
125 | to names for our own functions in sysdep.c that do the system call | |
126 | with retries. */ | |
127 | ||
128 | #define read sys_read | |
129 | #define write sys_write | |
130 | #define open sys_open | |
131 | #define close sys_close | |
132 | ||
133 | #define INTERRUPTIBLE_OPEN | |
134 | #define INTERRUPTIBLE_CLOSE | |
135 | #define INTERRUPTIBLE_IO | |
566e3587 JB |
136 | |
137 | /* If you mount the proc file system somewhere other than /proc | |
138 | you will have to uncomment the following and make the proper | |
139 | changes */ | |
140 | ||
141 | /* #define LINUX_LDAV_FILE "/proc/loadavg" */ | |
142 | ||
a9c82aaf | 143 | /* This is needed for disknew.c:update_frame */ |
566e3587 | 144 | |
5e5623c2 | 145 | #ifdef emacs |
a9c82aaf | 146 | #include <stdio.h> /* Get the definition of _IO_STDIO_H. */ |
4dee6d0d | 147 | #if defined(_IO_STDIO_H) || defined(_STDIO_USES_IOSTREAM) |
5e5623c2 | 148 | /* new C libio names */ |
c2c3f859 | 149 | #define GNU_LIBRARY_PENDING_OUTPUT_COUNT(FILE) \ |
5e5623c2 RS |
150 | ((FILE)->_IO_write_ptr - (FILE)->_IO_write_base) |
151 | #else /* !_IO_STDIO_H */ | |
152 | /* old C++ iostream names */ | |
c2c3f859 | 153 | #define GNU_LIBRARY_PENDING_OUTPUT_COUNT(FILE) \ |
5e5623c2 RS |
154 | ((FILE)->_pptr - (FILE)->_pbase) |
155 | #endif /* !_IO_STDIO_H */ | |
156 | #endif /* emacs */ | |
566e3587 | 157 | |
5101db23 | 158 | /* Ask GCC where to find libgcc.a. */ |
08ddf771 | 159 | #define LIB_GCC `$(CC) $(C_SWITCH_X_SITE) -print-libgcc-file-name` |
5101db23 | 160 | |
4dee6d0d | 161 | #ifndef __ELF__ |
566e3587 JB |
162 | /* Linux has crt0.o in a non-standard place */ |
163 | #define START_FILES pre-crt0.o /usr/lib/crt0.o | |
4dee6d0d KH |
164 | #else |
165 | #define START_FILES pre-crt0.o /usr/lib/crt1.o /usr/lib/crti.o | |
166 | #endif | |
566e3587 | 167 | |
00364e4e RS |
168 | /* As of version 1.1.51, Linux does not actually implement SIGIO. */ |
169 | /* Here we assume that signal.h is already included. */ | |
566e3587 | 170 | #ifdef emacs |
566e3587 JB |
171 | #undef SIGIO |
172 | #endif | |
173 | ||
174 | /* This is needed for sysdep.c */ | |
175 | ||
566e3587 JB |
176 | #define NO_SIOCTL_H /* don't have sioctl.h */ |
177 | ||
566e3587 JB |
178 | #define HAVE_VFORK |
179 | #define HAVE_SYS_SIGLIST | |
180 | #define HAVE_GETWD /* cure conflict with getcwd? */ | |
181 | ||
566e3587 | 182 | #define SYSV_SYSTEM_DIR /* use dirent.h */ |
566e3587 | 183 | |
1abbab7a | 184 | #define POSIX /* affects getpagesize.h and systty.h */ |
566e3587 JB |
185 | #define POSIX_SIGNALS |
186 | ||
187 | /* libc-linux/sysdeps/linux/i386/ulimit.c says that due to shared library, */ | |
188 | /* we cannot get the maximum address for brk */ | |
189 | #define ULIMIT_BREAK_VALUE (32*1024*1024) | |
190 | ||
97823303 RS |
191 | #define SEGMENT_MASK ((SEGMENT_SIZE)-1) |
192 | ||
566e3587 JB |
193 | /* Best not to include -lg, unless it is last on the command line */ |
194 | #define LIBS_DEBUG | |
195 | #define LIBS_TERMCAP -ltermcap -lcurses /* save some space with shared libs*/ | |
4dee6d0d | 196 | #ifndef __ELF__ |
566e3587 | 197 | #define LIB_STANDARD -lc /* avoid -lPW */ |
4dee6d0d | 198 | #else |
08ddf771 | 199 | #undef LIB_GCC |
4dee6d0d KH |
200 | #define LIB_GCC |
201 | #define LIB_STANDARD -lgcc -lc -lgcc /usr/lib/crtn.o | |
202 | #endif | |
3233bbe1 | 203 | |
6f10bc9d RS |
204 | /* Don't use -g in test compiles in configure. |
205 | This is so we will use the same shared libs for that linking | |
206 | that are used when linking temacs. */ | |
207 | #ifdef THIS_IS_CONFIGURE | |
208 | #define C_DEBUG_SWITCH | |
209 | #endif | |
210 | ||
9e479734 JB |
211 | /* Let's try this out, just in case. |
212 | Nah. Rik Faith <faith@cs.unc.edu> says it doesn't work well. */ | |
213 | /* #define SIGNALS_VIA_CHARACTERS */ | |
9199fa7f JB |
214 | |
215 | /* Rob Malouf <malouf@csli.stanford.edu> says: | |
216 | SYSV IPC is standard a standard part of Linux since version 0.99pl10, | |
217 | and is a very common addition to previous versions. */ | |
cafdb68a RS |
218 | |
219 | #ifdef TERM | |
220 | #define LIBS_MACHINE -lclient | |
221 | #define C_SWITCH_SYSTEM -D_BSD_SOURCE -I/usr/src/term | |
222 | #else | |
edb0cf8d RS |
223 | /* alane@wozzle.linet.org says that -lipc is not a separate library, |
224 | since libc-4.4.1. So -lipc was deleted. */ | |
225 | #define LIBS_MACHINE | |
cafdb68a RS |
226 | #define C_SWITCH_SYSTEM -D_BSD_SOURCE |
227 | #endif | |
228 | ||
9199fa7f | 229 | #define HAVE_SYSVIPC |
b04101bb | 230 | |
4dee6d0d KH |
231 | #ifdef __ELF__ |
232 | #define UNEXEC unexelf.o | |
baea3bdd | 233 | #define UNEXEC_USE_MAP_PRIVATE |
4dee6d0d KH |
234 | #endif |
235 | ||
8427dec9 RS |
236 | #ifdef LINUX_QMAGIC |
237 | ||
238 | #define HAVE_TEXT_START | |
239 | #define UNEXEC unexsunos4.o | |
240 | #define N_PAGSIZ(x) PAGE_SIZE | |
241 | ||
242 | #else /* not LINUX_QMAGIC */ | |
243 | ||
b04101bb RS |
244 | #define A_TEXT_OFFSET(hdr) (N_MAGIC(hdr) == QMAGIC ? sizeof (struct exec) : 0) |
245 | #define A_TEXT_SEEK(hdr) (N_TXTOFF(hdr) + A_TEXT_OFFSET(hdr)) | |
246 | #define ADJUST_EXEC_HEADER \ | |
247 | unexec_text_start = N_TXTADDR(ohdr) + A_TEXT_OFFSET(ohdr) | |
967ac200 | 248 | |
8427dec9 RS |
249 | #endif /* not LINUX_QMAGIC */ |
250 | ||
6f10bc9d | 251 | #if 0 |
967ac200 RS |
252 | /* In 19.23 and 19.24, configure sometimes fails to define these. |
253 | It has to do with the fact that configure uses CFLAGS when linking | |
254 | while Makefile.in.in (erroneously) fails to do so when linking temacs. */ | |
255 | #ifndef HAVE_GETTIMEOFDAY | |
256 | #define HAVE_GETTIMEOFDAY | |
257 | #endif | |
258 | #ifndef HAVE_MKDIR | |
259 | #define HAVE_MKDIR | |
260 | #endif | |
261 | #ifndef HAVE_RMDIR | |
262 | #define HAVE_RMDIR | |
263 | #endif | |
264 | #ifndef HAVE_XSCREENNUMBEROFSCREEN | |
265 | #define HAVE_XSCREENNUMBEROFSCREEN | |
266 | #endif | |
e3b89505 RS |
267 | #ifndef HAVE_XRMSETDATABASE |
268 | #define HAVE_XRMSETDATABASE | |
269 | #endif | |
6f10bc9d | 270 | #endif /* 0 */ |
e2000885 RS |
271 | |
272 | /* The regex.o routines are a part of the GNU C-library used with Linux. */ | |
273 | #define REGEXP_IN_LIBC |