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1.1 root 1: /* Definitions file for GNU Emacs running SCO Xenix 386 Release 2.2
2: Copyright (C) 1988 Free Software Foundation, Inc.
3:
4: This file is part of GNU Emacs.
5:
6: GNU Emacs is distributed in the hope that it will be useful,
7: but WITHOUT ANY WARRANTY. No author or distributor
8: accepts responsibility to anyone for the consequences of using it
9: or for whether it serves any particular purpose or works at all,
10: unless he says so in writing. Refer to the GNU Emacs General Public
11: License for full details.
12:
13: Everyone is granted permission to copy, modify and redistribute
14: GNU Emacs, but only under the conditions described in the
15: GNU Emacs General Public License. A copy of this license is
16: supposed to have been given to you along with GNU Emacs so you
17: can know your rights and responsibilities. It should be in a
18: file named COPYING. Among other things, the copyright notice
19: and this notice must be preserved on all copies. */
20:
21: /*
22: * Define symbols to identify the version of Unix this is.
23: * Define all the symbols that apply correctly.
24: */
25:
26: /* #define UNIPLUS */
27: #define XENIX
28: #define USG5
29: #define USG
30: /* #define HPUX */
31: /* #define UMAX */
32: /* #define BSD4_1 */
33: /* #define BSD4_2 */
34: /* #define BSD4_3 */
35: /* #define BSD */
36: /* #define VMS */
37:
38: /* SYSTEM_TYPE should indicate the kind of system you are using.
39: It sets the Lisp variable system-type. */
40:
41: #define SYSTEM_TYPE "xenix"
42:
43: /* NOMULTIPLEJOBS should be defined if your system's shell
44: does not have "job control" (the ability to stop a program,
45: run some other program, then continue the first one). */
46:
47: #define NOMULTIPLEJOBS
48:
49: /* Emacs can read input using SIGIO and buffering characters itself,
50: or using CBREAK mode and making C-g cause SIGINT.
51: The choice is controlled by the variable interrupt_input.
52: Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
53:
54: SIGIO can be used only on systems that implement it (4.2 and 4.3).
55: CBREAK mode has two disadvatages
56: 1) At least in 4.2, it is impossible to handle the Meta key properly.
57: I hear that in system V this problem does not exist.
58: 2) Control-G causes output to be discarded.
59: I do not know whether this can be fixed in system V.
60:
61: Another method of doing input is planned but not implemented.
62: It would have Emacs fork off a separate process
63: to read the input and send it to the true Emacs process
64: through a pipe.
65: */
66:
67: /* #define INTERRUPT_INPUT */
68:
69: /* Letter to use in finding device name of first pty,
70: if system supports pty's. 'p' means it is /dev/ptyp0 */
71:
72: /* #define FIRST_PTY_LETTER 'p' */
73:
74: /*
75: * Define HAVE_TERMIO if the system provides sysV-style ioctls
76: * for terminal control.
77: */
78:
79: #define HAVE_TERMIO
80:
81: /*
82: * Define HAVE_TIMEVAL if the system supports the BSD style clock values.
83: * Look in <sys/time.h> for a timeval structure.
84: */
85:
86: /* #define HAVE_TIMEVAL */
87:
88: /*
89: * Define HAVE_SELECT if the system supports the `select' system call.
90: */
91:
92: /* #define HAVE_SELECT */
93:
94: /*
95: * Define HAVE_PTYS if the system supports pty devices.
96: */
97:
98: /* #define HAVE_PTYS */
99:
100: /* Define HAVE_SOCKETS if system supports 4.2-compatible sockets. */
101:
102: /* #define HAVE_SOCKETS */
103:
104: /*
105: * Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
106: * The 4.2 opendir, etc., library functions.
107: */
108:
109: #define NONSYSTEM_DIR_LIBRARY
110:
111: /* Define this symbol if your system has the functions bcopy, etc. */
112:
113: /* #define BSTRING */
114:
115: /* subprocesses should be defined if you want to
116: have code for asynchronous subprocesses
117: (as used in M-x compile and M-x shell).
118: This is supposed to work now on system V release 2. */
119:
120: #define subprocesses
121:
122: /* If your system uses COFF (Common Object File Format) then define the
123: preprocessor symbol "COFF". */
124:
125: /* #define COFF */
126:
127: /* Xenix requires completely different unexec code
128: which lives in a separate file. Specify the file name. */
129:
130: #define UNEXEC unexenix.o
131:
132: /* define MAIL_USE_FLOCK if the mailer uses flock
133: to interlock access to /usr/spool/mail/$USER.
134: The alternative is that a lock file named
135: /usr/spool/mail/$USER.lock. */
136:
137: #define MAIL_USE_FLOCK
138:
139: /* Define CLASH_DETECTION if you want lock files to be written
140: so that Emacs can tell instantly when you try to modify
141: a file that someone else has modified in his Emacs. */
142:
143: /* The way this is implemented requires long filenames... */
144: /* #define CLASH_DETECTION */
145:
146: /* Define SHORTNAMES if the C compiler can distinguish only
147: short names. It means that the stuff in ../shortnames
148: must be run to convert the long names to short ones. */
149:
150: /* #define SHORTNAMES */
151:
152: /* We do not use the Berkeley (and usg5.2.2) interface to nlist. */
153:
154: /* #define NLIST_STRUCT */
155:
156: /* Compensate for one incompatibility between Xenix and V.0. */
157: #define n_zeroes n_name[0]
158:
159: /* The file containing the kernel's symbol table is called /xenix. */
160:
161: #define KERNEL_FILE "/xenix"
162:
163: /* The symbol in the kernel where the load average is found
164: is named avenrun. */
165:
166: #define LDAV_SYMBOL "_avenrun"
167:
168: /* Special hacks needed to make Emacs run on this system. */
169:
170: /*
171: * Make the sigsetmask function go away. Don't know what the
172: * ramifications of this are, but doesn't seem possible to
173: * emulate it properly anyway at this point.
174: */
175:
176: #define sigsetmask(mask) /* Null expansion */
177:
178: /* setjmp and longjmp can safely replace _setjmp and _longjmp,
179: but they will run slower. */
180:
181: #define _setjmp setjmp
182: #define _longjmp longjmp
183:
184: /* On USG systems the system calls are interruptable by signals
185: that the user program has elected to catch. Thus the system call
186: must be retried in these cases. To handle this without massive
187: changes in the source code, we remap the standard system call names
188: to names for our own functions in sysdep.c that do the system call
189: with retries. */
190:
191: #define read sys_read
192: #define open sys_open
193: #define write sys_write
194:
195: #define INTERRUPTABLE_OPEN
196: #define INTERRUPTABLE_IO
197:
198: /* On USG systems these have different names */
199:
200: #define index strchr
201: #define rindex strrchr
202:
203: /* Compiler bug bites on many systems when default ADDR_CORRECT is used. */
204:
205: #define ADDR_CORRECT(x) (x)
206:
207: /* Prevent -lg from being used for debugging. Not implemented? */
208:
209: #define LIBS_DEBUG
210:
211: /* Switches for linking temacs. */
212:
213: #define LD_SWITCH_SYSTEM -i
214:
215: /* Xenix implements sysV style IPC. */
216:
217: #define HAVE_SYSVIPC
218:
219: /* Use terminfo instead of termcap. */
220:
221: /* Tell Emacs to use Terminfo. */
222:
223: #define TERMINFO
224:
225: /* Tell Xenix curses to BE Terminfo. */
226: #define M_TERMINFO
227:
228: /* Control program name for etc/fakemail to run. */
229:
230: #ifdef SMAIL
231: #define MAIL_PROGRAM_NAME "/usr/bin/smail -q0"
232: #else
233: #define MAIL_PROGRAM_NAME "/usr/lib/mail/execmail"
234: #endif
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