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1.1 root 1: /* Definitions file for GNU Emacs running on AT&T's System V Release 2.2
2: Copyright (C) 1985, 1986 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: /*
22: * Define symbols to identify the version of Unix this is.
23: * Define all the symbols that apply correctly.
24: */
25:
26: #define USG /* System III, System V, etc */
27:
28: #define USG5
29:
30: /* SYSTEM_TYPE should indicate the kind of system you are using.
31: It sets the Lisp variable system-type. */
32:
33: #define SYSTEM_TYPE "usg-unix-v"
34:
35: /* nomultiplejobs should be defined if your system's shell
36: does not have "job control" (the ability to stop a program,
37: run some other program, then continue the first one). */
38:
39: #define NOMULTIPLEJOBS
40:
41: /* Default is to set interrupt_input to 0: don't do input buffering within Emacs */
42:
43: /* #define INTERRUPT_INPUT */
44:
45: /* Letter to use in finding device name of first pty,
46: if system supports pty's. 'p' means it is /dev/ptyp0 */
47:
48: #define FIRST_PTY_LETTER 'p'
49:
50: /*
51: * Define HAVE_TERMIO if the system provides sysV-style ioctls
52: * for terminal control.
53: */
54:
55: #define HAVE_TERMIO
56:
57: /*
58: * Define HAVE_TIMEVAL if the system supports the BSD style clock values.
59: * Look in <sys/time.h> for a timeval structure.
60: */
61:
62: /* #define HAVE_TIMEVAL */
63:
64: /*
65: * Define HAVE_SELECT if the system supports the `select' system call.
66: */
67:
68: /* #define HAVE_SELECT */
69:
70: /*
71: * Define HAVE_PTYS if the system supports pty devices.
72: */
73:
74: /* #define HAVE_PTYS */
75:
76: /* Define HAVE_SOCKETS if system supports 4.2-compatible sockets. */
77:
78: /* #define HAVE_SOCKETS */
79:
80: /*
81: * Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
82: * The 4.2 opendir, etc., library functions.
83: */
84:
85: #define NONSYSTEM_DIR_LIBRARY
86:
87: /* Define this symbol if your system has the functions bcopy, etc. */
88:
89: /* #define BSTRING */
90:
91: /* subprocesses should be defined if you want to
92: have code for asynchronous subprocesses
93: (as used in M-x compile and M-x shell).
94: This is supposed to work now on system V release 2. */
95:
96: #define subprocesses
97:
98: /* If your system uses COFF (Common Object File Format) then define the
99: preprocessor symbol "COFF". */
100:
101: #define COFF
102:
103: /* define MAIL_USE_FLOCK if the mailer uses flock
104: to interlock access to /usr/spool/mail/$USER.
105: The alternative is that a lock file named
106: /usr/spool/mail/$USER.lock. */
107:
108: /* #define MAIL_USE_FLOCK */
109:
110: /* Define CLASH_DETECTION if you want lock files to be written
111: so that Emacs can tell instantly when you try to modify
112: a file that someone else has modified in his Emacs. */
113:
114: /* #define CLASH_DETECTION */
115:
116: /* Define SHORTNAMES if the C compiler can distinguish only
117: short names. It means that the stuff in ../shortnames
118: must be run to convert the long names to short ones. */
119:
120: /* #define SHORTNAMES */
121:
122: /* We use the Berkeley (and usg5.2.2) interface to nlist. */
123:
124: #define NLIST_STRUCT
125:
126: /* The file containing the kernel's symbol table is called /unix. */
127:
128: #define KERNEL_FILE "/unix"
129:
130: /* The symbol in the kernel where the load average is found
131: is named avenrun. */
132:
133: #define LDAV_SYMBOL "avenrun"
134:
135: /* Special hacks needed to make Emacs run on this system. */
136:
137: /*
138: * Make the sigsetmask function go away. Don't know what the
139: * ramifications of this are, but doesn't seem possible to
140: * emulate it properly anyway at this point.
141: */
142:
143: #define sigsetmask(mask) /* Null expansion */
144:
145: /* setjmp and longjmp can safely replace _setjmp and _longjmp,
146: but they will run slower. */
147:
148: #define _setjmp setjmp
149: #define _longjmp longjmp
150:
151: /* On USG systems the system calls are interruptable by signals
152: that the user program has elected to catch. Thus the system call
153: must be retried in these cases. To handle this without massive
154: changes in the source code, we remap the standard system call names
155: to names for our own functions in sysdep.c that do the system call
156: with retries. */
157:
158: #define read sys_read
159: #define open sys_open
160: #define write sys_write
161:
162: #define INTERRUPTABLE_OPEN
163: #define INTERRUPTABLE_IO
164:
165: /* On USG systems these have different names */
166:
167: #define index strchr
168: #define rindex strrchr
169:
170: /* USG systems tend to put everything declared static
171: into the initialized data area, which becomes pure after dumping Emacs.
172: Foil this. Emacs carefully avoids static vars inside functions. */
173:
174: #define static
175:
176: /* Compiler bug bites on many systems when default ADDR_CORRECT is used. */
177:
178: #define ADDR_CORRECT(x) (x)
179:
180: /* Prevent -lg from being used for debugging. Not implemented? */
181:
182: #define LIBS_DEBUG
183:
184: /* Use terminfo instead of termcap. */
185:
186: #define TERMINFO
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