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comparison src/s/linux.h @ 428:3ecd8885ac67 r21-2-22

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Import from CVS: tag r21-2-22
author cvs
date Mon, 13 Aug 2007 11:28:15 +0200
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children abe6d1db359e
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427:0a0253eac470 428:3ecd8885ac67
1 /* This file is the configuration file for the GNU/Linux operating system,
2 prior to version 1.1.56.
3 Copyright (C) 1985, 1986, 1992, 1994 Free Software Foundation, Inc.
4
5 This file is part of GNU Emacs.
6
7 GNU Emacs is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
10 any later version.
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
18 along with XEmacs; see the file COPYING. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
21
22 /* Synched up with: FSF 19.31 (called, ahem ... lignux.h in FSF). */
23
24 /* This file was put together by Michael K. Johnson and Rik Faith. */
25
26 #define USG
27 #define LINUX
28
29 /* powerpc gcc 2.8.0 doesn't define __ELF__, but it is */
30
31 #if defined(__ELF__) || defined(powerpc)
32 #define LINUX_ELF
33 #endif
34
35 /* SYSTEM_TYPE should indicate the kind of system you are using.
36 It sets the Lisp variable system-type. */
37
38 #define SYSTEM_TYPE "linux" /* All the best software is free. */
39
40 #define FIRST_PTY_LETTER 'p'
41 #define HAVE_PTYS
42
43 /* define MAIL_USE_FLOCK if the mailer uses flock
44 to interlock access to /usr/spool/mail/$USER.
45 The alternative is that a lock file named
46 /usr/spool/mail/$USER.lock. */
47
48 /* Both are used in Linux by different mail programs. I assume that most
49 people are using newer mailers that have heard of flock. Change this
50 if you need to. */
51
52 /*#define MAIL_USE_FLOCK*/
53
54 /* Here, on a separate page, add any special hacks needed
55 to make Emacs work on this system. For example,
56 you might define certain system call names that don't
57 exist on your system, or that do different things on
58 your system and must be used only through an encapsulation
59 (Which you should place, by convention, in sysdep.c). */
60
61 /* On POSIX systems the system calls are interruptible by signals
62 that the user program has elected to catch. Thus the system call
63 must be retried in these cases. To handle this without massive
64 changes in the source code, we remap the standard system call names
65 to names for our own functions in sysdep.c that do the system call
66 with retries. */
67
68 #define INTERRUPTIBLE_OPEN
69 #define INTERRUPTIBLE_CLOSE
70 #define INTERRUPTIBLE_IO
71
72 /* This is needed for dispnew.c:update_frame */
73
74 #ifndef NOT_C_CODE
75 #include <stdio.h> /* Get the definition of _IO_STDIO_H. */
76 #if defined(_IO_STDIO_H) || defined(_STDIO_USES_IOSTREAM)
77 /* new C libio names */
78 #define GNU_LIBRARY_PENDING_OUTPUT_COUNT(FILE) \
79 ((FILE)->_IO_write_ptr - (FILE)->_IO_write_base)
80 #else /* !_IO_STDIO_H */
81 /* old C++ iostream names */
82 #define GNU_LIBRARY_PENDING_OUTPUT_COUNT(FILE) \
83 ((FILE)->_pptr - (FILE)->_pbase)
84 #endif /* !_IO_STDIO_H */
85 #endif /* C_CODE */
86
87 /* Ask GCC where to find libgcc.a. */
88 #define LIB_GCC "`$(CC) $(C_SWITCH_X_SITE) -print-libgcc-file-name`"
89
90 #ifndef LINUX_ELF
91 /* Linux has crt0.o in a non-standard place */
92 #define START_FILES "pre-crt0.o /usr/lib/crt0.o"
93 #else
94 /**/
95 #if defined(__linux__) && defined(powerpc) /*Added by Fukui*/
96 #define START_FILES /*Added by Fukui*/
97 #else /*Added by Fukui*/
98
99 #define START_FILES "pre-crt0.o /usr/lib/crt1.o /usr/lib/crti.o"
100 #endif /*Added by Fukui*/
101 #endif
102
103 /* This is needed for sysdep.c */
104
105 #define NO_SIOCTL_H /* don't have sioctl.h */
106
107 #define HAVE_SYS_SIGLIST
108 #define HAVE_WAIT_HEADER
109
110 #define POSIX /* affects getpagesize.h and systty.h */
111
112 /* Best not to include -lg, unless it is last on the command line */
113 #define LIBS_DEBUG
114 #define LIBS_TERMCAP "-ltermcap -lcurses" /* save some space with shared libs*/
115 #ifndef LINUX_ELF
116 #define LIB_STANDARD "-lc" /* avoid -lPW */
117 #else
118 /*#undef LIB_GCC
119 #define LIB_GCC*/
120 #define LIB_STANDARD "-lgcc -lc -lgcc /usr/lib/crtn.o"
121 #define LINKER "$(CC) -nostdlib"
122 #endif
123
124 #ifdef TERM
125 #define LIBS_SYSTEM "-lclient"
126 #define C_SWITCH_SYSTEM "-I/usr/src/term"
127 #else
128 /* alane@wozzle.linet.org says that -lipc is not a separate library,
129 since libc-4.4.1. So -lipc was deleted. */
130 #define LIBS_SYSTEM
131 #endif
132
133 #ifdef LINUX_ELF
134 #define UNEXEC "unexelf.o"
135 #define UNEXEC_USE_MAP_PRIVATE
136 #if 0
137 /* mrb - Ordinary link is simple and effective */
138 /* slb - Not any more ... :-( */
139 #define ORDINARY_LINK
140 #endif /* 0 */
141
142 /* I still think ORDINARY_LINK should be the default, but since slb
143 insists, ORDINARY_LINK will stay on until we expunge the dump code.
144 However, the user (i.e. me!) should be able to specify ORDINARY_LINK via
145 configure --cppflags=-DORDINARY_LINK ... */
146 #ifdef ORDINARY_LINK
147 #undef LIB_STANDARD
148 #undef START_FILES
149 #undef LIB_GCC
150 #endif
151 #endif /* LINUX_ELF */
152
153 #ifdef LINUX_QMAGIC
154
155 #define HAVE_TEXT_START
156 #define UNEXEC "unexsunos4.o"
157 #define N_PAGSIZ(x) PAGE_SIZE
158
159 #else /* not LINUX_QMAGIC */
160
161 #define A_TEXT_OFFSET(hdr) (N_MAGIC(hdr) == QMAGIC ? sizeof (struct exec) : 0)
162 #define A_TEXT_SEEK(hdr) (N_TXTOFF(hdr) + A_TEXT_OFFSET(hdr))
163 #define ADJUST_EXEC_HEADER \
164 unexec_text_start = N_TXTADDR(ohdr) + A_TEXT_OFFSET(ohdr)
165
166 #endif /* not LINUX_QMAGIC */
167
168 /* This is to work around mysterious gcc failures in some system versions.
169 It is unlikely that Emacs changes will work around this problem;
170 therefore, this should remain permanently. */
171 #ifndef HAVE_XRMSETDATABASE
172 #define HAVE_XRMSETDATABASE
173 #endif
174
175 /* The regex.o routines are a part of the GNU C-library used with Linux. */
176 /* However, sometimes they disagree with the src/regex.h that comes with Emacs,
177 and that can make trouble in etags.c because it gets the regex.h from Emacs
178 and the function definitions in libc. So turn this off. */
179 /* XEmacs: in any case, Mule uses different regex routines. */
180 /* #define REGEXP_IN_LIBC */
181
182 /* XEmacs change: the standard linux libc includes regex routines in
183 it. We have to use our own and have to avoid name conflicts. */
184
185 #define re_compile_pattern sys_re_compile_pattern
186 #define re_search sys_re_search
187 #define re_search_2 sys_re_search_2
188 #define re_match_2 sys_re_match_2
189 #define re_max_failures sys_re_max_failures
190 #define re_set_syntax sys_re_set_syntax
191 #define re_set_registers sys_re_set_registers
192 #define re_compile_fastmap sys_re_compile_fastmap
193 #define re_match sys_re_match
194 #define regcomp sys_regcomp
195 #define regexec sys_regexec
196 #define regerror sys_regerror
197 #define regfree sys_regfree
198
199 #if 0 /* mrb - if autoconf 2 is wrong, we should fix the test */
200 /* XEmacs: Damon Lipparelli says that he incorrectly gets this
201 defined on his system */
202 #undef GETTIMEOFDAY_ONE_ARGUMENT
203 #endif /* 0 */
204
205 /* Use BSD process groups, but use setpgid() instead of setpgrp() to
206 actually set a process group. */
207
208 /* XEmacs: removed setpgrp() definition because we use setpgid() when
209 it's available, and autodetect it. */