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1b94449f RS |
1 | /* System description file for MS-DOS |
2 | ||
edabc323 | 3 | Copyright (C) 1993, 1996 Free Software Foundation, Inc. |
1b94449f RS |
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 GNU Emacs; see the file COPYING. If not, write to | |
3b7ad313 EN |
19 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
20 | Boston, MA 02111-1307, USA. */ | |
1b94449f RS |
21 | |
22 | /* Note: lots of stuff here was taken from s-msdos.h in demacs. */ | |
23 | ||
24 | ||
25 | /* | |
26 | * Define symbols to identify the version of Unix this is. | |
27 | * Define all the symbols that apply correctly. | |
28 | */ | |
29 | ||
30 | /* #define UNIPLUS */ | |
31 | /* #define USG5 */ | |
32 | /* #define USG */ | |
33 | /* #define HPUX */ | |
34 | /* #define UMAX */ | |
35 | /* #define BSD4_1 */ | |
36 | /* #define BSD4_2 */ | |
37 | /* #define BSD4_3 */ | |
6df54671 | 38 | /* #define BSD_SYSTEM */ |
1b94449f RS |
39 | /* #define VMS */ |
40 | #ifndef MSDOS | |
41 | #define MSDOS | |
42 | #endif | |
fcc182b3 | 43 | |
920b97ab KS |
44 | #ifdef __GO32__ |
45 | #ifndef __DJGPP__ | |
46 | #define __DJGPP__ 1 /* V2 defines __DJGPP__ == 2 */ | |
920b97ab KS |
47 | #endif |
48 | #else | |
49 | You lose; /* Emacs for DOS must be compiled with DJGPP */ | |
50 | #endif | |
51 | ||
fcc182b3 | 52 | #define DOS_NT /* MSDOS or WINDOWSNT */ |
6df54671 | 53 | #undef BSD_SYSTEM |
1b94449f RS |
54 | #undef VMS |
55 | ||
56 | /* SYSTEM_TYPE should indicate the kind of system you are using. | |
57 | It sets the Lisp variable system-type. */ | |
58 | ||
59 | #define SYSTEM_TYPE "ms-dos" | |
60 | ||
e0e94b6c | 61 | #define SYMS_SYSTEM syms_of_dosfns();syms_of_msdos() |
1b94449f RS |
62 | |
63 | /* NOMULTIPLEJOBS should be defined if your system's shell | |
64 | does not have "job control" (the ability to stop a program, | |
65 | run some other program, then continue the first one). */ | |
66 | ||
67 | #define NOMULTIPLEJOBS | |
68 | ||
69 | /* Emacs can read input using SIGIO and buffering characters itself, | |
70 | or using CBREAK mode and making C-g cause SIGINT. | |
71 | The choice is controlled by the variable interrupt_input. | |
72 | Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO) | |
73 | ||
74 | SIGIO can be used only on systems that implement it (4.2 and 4.3). | |
8e6208c5 | 75 | CBREAK mode has two disadvantages |
1b94449f RS |
76 | 1) At least in 4.2, it is impossible to handle the Meta key properly. |
77 | I hear that in system V this problem does not exist. | |
78 | 2) Control-G causes output to be discarded. | |
79 | I do not know whether this can be fixed in system V. | |
80 | ||
81 | Another method of doing input is planned but not implemented. | |
82 | It would have Emacs fork off a separate process | |
83 | to read the input and send it to the true Emacs process | |
84 | through a pipe. | |
85 | */ | |
86 | ||
87 | /* #define INTERRUPT_INPUT */ | |
88 | ||
89 | /* Letter to use in finding device name of first pty, | |
90 | if system supports pty's. 'a' means it is /dev/ptya0 */ | |
91 | ||
92 | /* #define FIRST_PTY_LETTER 'a' */ | |
93 | ||
1b94449f RS |
94 | /* |
95 | * Define HAVE_PTYS if the system supports pty devices. | |
96 | */ | |
97 | ||
98 | /* #define HAVE_PTYS */ | |
99 | ||
100 | /* | |
101 | * Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate | |
102 | * The 4.2 opendir, etc., library functions. | |
103 | */ | |
104 | ||
105 | /* #define NONSYSTEM_DIR_LIBRARY */ | |
106 | ||
107 | #define SYSV_SYSTEM_DIR | |
108 | ||
109 | /* Define this symbol if your system has the functions bcopy, etc. */ | |
110 | ||
111 | #define BSTRING | |
112 | ||
17b9d003 RS |
113 | /* Define this is the compiler understands `volatile'. */ |
114 | #define HAVE_VOLATILE | |
115 | ||
116 | ||
1b94449f RS |
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 | #undef subprocesses | |
124 | ||
125 | /* If your system uses COFF (Common Object File Format) then define the | |
126 | preprocessor symbol "COFF". */ | |
127 | ||
128 | #define COFF | |
129 | ||
130 | /* define MAIL_USE_FLOCK if the mailer uses flock | |
131 | to interlock access to /usr/spool/mail/$USER. | |
132 | The alternative is that a lock file named | |
133 | /usr/spool/mail/$USER.lock. */ | |
134 | ||
135 | /* #define MAIL_USE_FLOCK */ | |
136 | ||
137 | /* Define CLASH_DETECTION if you want lock files to be written | |
138 | so that Emacs can tell instantly when you try to modify | |
139 | a file that someone else has modified in his Emacs. */ | |
140 | ||
141 | /* #define CLASH_DETECTION */ | |
142 | ||
143 | /* Here, on a separate page, add any special hacks needed | |
144 | to make Emacs work on this system. For example, | |
145 | you might define certain system call names that don't | |
146 | exist on your system, or that do different things on | |
147 | your system and must be used only through an encapsulation | |
148 | (Which you should place, by convention, in sysdep.c). */ | |
149 | \f | |
7630a042 RS |
150 | /* Avoid incompatibilities between gmalloc.c and system header files |
151 | in how to declare valloc. */ | |
152 | #define GMALLOC_INHIBIT_VALLOC | |
153 | ||
1b94449f RS |
154 | /* setjmp and longjmp can safely replace _setjmp and _longjmp, |
155 | but they will run slower. */ | |
156 | ||
157 | #define _setjmp setjmp | |
158 | #define _longjmp longjmp | |
159 | ||
7a05f3c7 RS |
160 | #if __DJGPP__ < 2 |
161 | ||
1b94449f RS |
162 | #define NO_MODE_T |
163 | ||
7a05f3c7 RS |
164 | /* New chdir () routine. |
165 | DJGPP v2.0 and later doesn't need it because its chdir() does | |
166 | set the drive itself. */ | |
1b94449f RS |
167 | #ifdef chdir |
168 | #undef chdir | |
169 | #endif | |
170 | #define chdir sys_chdir | |
171 | ||
7a05f3c7 RS |
172 | #define LIBS_SYSTEM -lpc /* isn't required in DJGPP v2.0, either */ |
173 | ||
174 | #endif /* __DJGPP__ < 2 */ | |
175 | ||
176 | #if __DJGPP__ > 1 | |
177 | ||
178 | #define DATA_START (&etext + 1) | |
179 | #define TEXT_START &start | |
180 | #define TEXT_END &etext | |
181 | ||
182 | #define _NAIVE_DOS_REGS | |
183 | ||
184 | #else /* not __DJGPP__ > 1 */ | |
1b94449f RS |
185 | |
186 | /* This somehow needs to be defined even though we use COFF. */ | |
187 | #define TEXT_START -1 | |
188 | ||
7a05f3c7 RS |
189 | #endif /* not __DJGPP__ > 1 */ |
190 | ||
1b94449f RS |
191 | #define ORDINARY_LINK |
192 | ||
87485d6f | 193 | /* command.com does not understand `...` so we define this. */ |
1b94449f RS |
194 | #define LIB_GCC -Lgcc |
195 | #define DONT_NEED_ENVIRON | |
196 | #define SEPCHAR ';' | |
197 | ||
198 | #define NULL_DEVICE "nul" | |
199 | #define EXEC_SUFFIXES ".exe:.com:.bat:" | |
200 | ||
7a05f3c7 | 201 | #if __DJGPP__ < 2 |
1b94449f RS |
202 | #define O_RDONLY 0x0001 |
203 | #define O_WRONLY 0x0002 | |
204 | #define O_RDWR 0x0004 | |
205 | #define O_CREAT 0x0100 | |
206 | #define O_TRUNC 0x0200 | |
207 | #define O_EXCL 0x0400 | |
208 | #define O_APPEND 0x0800 | |
209 | #define O_TEXT 0x4000 | |
210 | #define O_BINARY 0x8000 | |
7a05f3c7 RS |
211 | #define NO_MATHERR |
212 | #endif | |
1b94449f RS |
213 | |
214 | #define HAVE_INVERSE_HYPERBOLIC | |
215 | #define FLOAT_CHECK_DOMAIN | |
216 | ||
217 | /* When $TERM is "internal" then this is substituted: */ | |
218 | #define INTERNAL_TERMINAL "pc|bios|IBM PC with colour display:\ | |
920b97ab | 219 | :co#80:li#25:km:ms:cm=<CM>:cl=<CL>:ce=<CE>:" |
1b94449f RS |
220 | |
221 | /* Define this to a function (Fdowncase, Fupcase) if your file system | |
222 | likes that */ | |
2f019854 | 223 | #define FILE_SYSTEM_CASE Fmsdos_downcase_filename |
1b94449f | 224 | |
29675256 RS |
225 | /* Define this to be the separator between devices and paths */ |
226 | #define DEVICE_SEP ':' | |
227 | ||
228 | /* We'll support either convention on MSDOG. */ | |
229 | #define IS_DIRECTORY_SEP(_c_) ((_c_) == '/' || (_c_) == '\\') | |
230 | #define IS_ANY_SEP(_c_) (IS_DIRECTORY_SEP (_c_) || IS_DEVICE_SEP (_c_)) | |
231 | ||
6b8ac9d2 | 232 | /* Call init_gettimeofday when TZ changes. */ |
7a05f3c7 | 233 | #if __DJGPP__ < 2 |
6b8ac9d2 PE |
234 | #define LOCALTIME_CACHE |
235 | #define tzset init_gettimeofday | |
7a05f3c7 | 236 | #endif |
6b8ac9d2 | 237 | |
a7d40caa KH |
238 | /* bcopy under djgpp is quite safe */ |
239 | #define GAP_USE_BCOPY | |
240 | #define BCOPY_UPWARD_SAFE 1 | |
241 | #define BCOPY_DOWNWARD_SAFE 1 | |
eb246adb | 242 | |
b77c5660 KH |
243 | /* Mode line description of a buffer's type. */ |
244 | #define MODE_LINE_BINARY_TEXT(buf) (NILP(buf->buffer_file_type) ? "T" : "B") | |
245 | ||
7a05f3c7 RS |
246 | /* Do we have POSIX signals? */ |
247 | #if __DJGPP__ > 1 | |
248 | #define POSIX_SIGNALS | |
249 | #endif | |
250 | ||
eb246adb RS |
251 | /* We have (the code to control) a mouse. */ |
252 | #define HAVE_MOUSE | |
87485d6f | 253 | |
61c88d95 RS |
254 | /* We canuse mouse menus. */ |
255 | #define HAVE_MENUS | |
256 | ||
87485d6f MW |
257 | /* We have support for faces. */ |
258 | #define HAVE_FACES | |
259 | ||
260 | /* Define one of these for easier conditionals. */ | |
261 | #ifdef HAVE_X_WINDOWS | |
262 | /* We need a little extra space, see ../../lisp/loadup.el */ | |
263 | #define SYSTEM_PURESIZE_EXTRA 15000 | |
264 | #define HAVE_X11R5 | |
265 | #define LIBX11_SYSTEM -lxext -lsys | |
266 | #else | |
267 | /* We need a little extra space, see ../../lisp/loadup.el */ | |
c52d9849 | 268 | #define SYSTEM_PURESIZE_EXTRA 85000 |
87485d6f | 269 | #endif |