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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 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 1, 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:
20: /*
21: * Define symbols to identify the version of Unix this is.
22: * Define all the symbols that apply correctly.
23: */
24:
25: /* #define UNIPLUS */
26: #define XENIX
27: #define USG5
28: #define USG
29: /* #define HPUX */
30: /* #define UMAX */
31: /* #define BSD4_1 */
32: /* #define BSD4_2 */
33: /* #define BSD4_3 */
34: /* #define BSD */
35: /* #define VMS */
36:
37: /* SYSTEM_TYPE should indicate the kind of system you are using.
38: It sets the Lisp variable system-type. */
39:
40: #define SYSTEM_TYPE "xenix"
41:
42: /* NOMULTIPLEJOBS should be defined if your system's shell
43: does not have "job control" (the ability to stop a program,
44: run some other program, then continue the first one). */
45:
46: #define NOMULTIPLEJOBS
47:
48: /* Emacs can read input using SIGIO and buffering characters itself,
49: or using CBREAK mode and making C-g cause SIGINT.
50: The choice is controlled by the variable interrupt_input.
51: Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
52:
53: SIGIO can be used only on systems that implement it (4.2 and 4.3).
54: CBREAK mode has two disadvatages
55: 1) At least in 4.2, it is impossible to handle the Meta key properly.
56: I hear that in system V this problem does not exist.
57: 2) Control-G causes output to be discarded.
58: I do not know whether this can be fixed in system V.
59:
60: Another method of doing input is planned but not implemented.
61: It would have Emacs fork off a separate process
62: to read the input and send it to the true Emacs process
63: through a pipe.
64: */
65:
66: /* #define INTERRUPT_INPUT */
67:
68: /* Letter to use in finding device name of first pty,
69: if system supports pty's. 'p' means it is /dev/ptyp0 */
70:
71: /* #define FIRST_PTY_LETTER 'p' */
72:
73: /*
74: * Define HAVE_TERMIO if the system provides sysV-style ioctls
75: * for terminal control.
76: */
77:
78: #define HAVE_TERMIO
79:
80: /*
81: * Define HAVE_TIMEVAL if the system supports the BSD style clock values.
82: * Look in <sys/time.h> for a timeval structure.
83: */
84:
85: /* #define HAVE_TIMEVAL */
86:
87: /*
88: * Define HAVE_SELECT if the system supports the `select' system call.
89: */
90:
91: /* #define HAVE_SELECT */
92:
93: /*
94: * Define HAVE_PTYS if the system supports pty devices.
95: */
96:
97: /* #define HAVE_PTYS */
98:
99: /* Define HAVE_SOCKETS if system supports 4.2-compatible sockets. */
100:
101: /* #define HAVE_SOCKETS */
102:
103: /*
104: * Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
105: * The 4.2 opendir, etc., library functions.
106: */
107:
108: #define NONSYSTEM_DIR_LIBRARY
109:
110: /* Define this symbol if your system has the functions bcopy, etc. */
111:
112: /* #define BSTRING */
113:
114: /* subprocesses should be defined if you want to
115: have code for asynchronous subprocesses
116: (as used in M-x compile and M-x shell).
117: This is supposed to work now on system V release 2. */
118:
119: #define subprocesses
120:
121: /* If your system uses COFF (Common Object File Format) then define the
122: preprocessor symbol "COFF". */
123:
124: /* #define COFF */
125:
126: /* Xenix requires completely different unexec code
127: which lives in a separate file. Specify the file name. */
128:
129: #define UNEXEC unexenix.o
130:
131: /* define MAIL_USE_FLOCK if the mailer uses flock
132: to interlock access to /usr/spool/mail/$USER.
133: The alternative is that a lock file named
134: /usr/spool/mail/$USER.lock. */
135:
136: #define MAIL_USE_FLOCK
137:
138: /* Define CLASH_DETECTION if you want lock files to be written
139: so that Emacs can tell instantly when you try to modify
140: a file that someone else has modified in his Emacs. */
141:
142: /* The way this is implemented requires long filenames... */
143: /* #define CLASH_DETECTION */
144:
145: /* Define SHORTNAMES if the C compiler can distinguish only
146: short names. It means that the stuff in ../shortnames
147: must be run to convert the long names to short ones. */
148:
149: /* #define SHORTNAMES */
150:
151: /* We do not use the Berkeley (and usg5.2.2) interface to nlist. */
152:
153: /* #define NLIST_STRUCT */
154:
155: /* Compensate for one incompatibility between Xenix and V.0. */
156: #define n_zeroes n_name[0]
157:
158: /* The file containing the kernel's symbol table is called /xenix. */
159:
160: #define KERNEL_FILE "/xenix"
161:
162: /* The symbol in the kernel where the load average is found
163: is named avenrun. */
164:
165: #define LDAV_SYMBOL "_avenrun"
166:
167: /* Special hacks needed to make Emacs run on this system. */
168:
169: /*
170: * Make the sigsetmask function go away. Don't know what the
171: * ramifications of this are, but doesn't seem possible to
172: * emulate it properly anyway at this point.
173: */
174:
175: #define sigsetmask(mask) /* Null expansion */
176:
177: /* setjmp and longjmp can safely replace _setjmp and _longjmp,
178: but they will run slower. */
179:
180: #define _setjmp setjmp
181: #define _longjmp longjmp
182:
183: /* On USG systems the system calls are interruptable by signals
184: that the user program has elected to catch. Thus the system call
185: must be retried in these cases. To handle this without massive
186: changes in the source code, we remap the standard system call names
187: to names for our own functions in sysdep.c that do the system call
188: with retries. */
189:
190: #define read sys_read
191: #define open sys_open
192: #define write sys_write
193:
194: #define INTERRUPTABLE_OPEN
195: #define INTERRUPTABLE_IO
196:
197: /* On USG systems these have different names */
198:
199: #define index strchr
200: #define rindex strrchr
201:
202: /* Compiler bug bites on many systems when default ADDR_CORRECT is used. */
203:
204: #define ADDR_CORRECT(x) (x)
205:
206: /* Prevent -lg from being used for debugging. Not implemented? */
207:
208: #define LIBS_DEBUG
209:
210: /* Switches for linking temacs. */
211:
212: #define LD_SWITCH_SYSTEM -i
213:
214: /* Xenix implements sysV style IPC. */
215:
216: #define HAVE_SYSVIPC
217:
218: /* Use terminfo instead of termcap. */
219:
220: /* Tell Emacs to use Terminfo. */
221:
222: #define TERMINFO
223:
224: /* Tell Xenix curses to BE Terminfo. */
225: #define M_TERMINFO
226:
227: /* Control program name for etc/fakemail to run. */
228:
229: #ifdef SMAIL
230: #define MAIL_PROGRAM_NAME "/usr/bin/smail -q0"
231: #else
232: #define MAIL_PROGRAM_NAME "/usr/lib/mail/execmail"
233: #endif
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