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1.1 root 1: /* Definitions file for GNU Emacs running on AT&T's System V Release 2.0
2: Copyright (C) 1985, 1986 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: /*
23: * Define symbols to identify the version of Unix this is.
24: * Define all the symbols that apply correctly.
25: */
26:
27: #define USG /* System III, System V, etc */
28:
29: #define USG5
30:
31: /* SYSTEM_TYPE should indicate the kind of system you are using.
32: It sets the Lisp variable system-type. */
33:
34: #define SYSTEM_TYPE "usg-unix-v"
35:
36: /* nomultiplejobs should be defined if your system's shell
37: does not have "job control" (the ability to stop a program,
38: run some other program, then continue the first one). */
39:
40: #define NOMULTIPLEJOBS
41:
42: /* Default is to set interrupt_input to 0: don't do input buffering within Emacs */
43:
44: /* #define INTERRUPT_INPUT */
45:
46: /* Letter to use in finding device name of first pty,
47: if system supports pty's. 'p' means it is /dev/ptyp0 */
48:
49: #define FIRST_PTY_LETTER 'p'
50:
51: /*
52: * Define HAVE_TERMIO if the system provides sysV-style ioctls
53: * for terminal control.
54: */
55:
56: #define HAVE_TERMIO
57:
58: /*
59: * Define HAVE_TIMEVAL if the system supports the BSD style clock values.
60: * Look in <sys/time.h> for a timeval structure.
61: */
62:
63: /* #define HAVE_TIMEVAL */
64:
65: /*
66: * Define HAVE_SELECT if the system supports the `select' system call.
67: */
68:
69: /* #define HAVE_SELECT */
70:
71: /*
72: * Define HAVE_PTYS if the system supports pty devices.
73: */
74:
75: /* #define HAVE_PTYS */
76:
77: /* Define HAVE_SOCKETS if system supports 4.2-compatible sockets. */
78:
79: /* #define HAVE_SOCKETS */
80:
81: /*
82: * Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
83: * The 4.2 opendir, etc., library functions.
84: */
85:
86: #define NONSYSTEM_DIR_LIBRARY
87:
88: /* Define this symbol if your system has the functions bcopy, etc. */
89:
90: /* #define BSTRING */
91:
92: /* subprocesses should be defined if you want to
93: have code for asynchronous subprocesses
94: (as used in M-x compile and M-x shell).
95: This is supposed to work now on system V release 2. */
96:
97: #define subprocesses
98:
99: /* If your system uses COFF (Common Object File Format) then define the
100: preprocessor symbol "COFF". */
101:
102: #define COFF
103:
104: /* define MAIL_USE_FLOCK if the mailer uses flock
105: to interlock access to /usr/spool/mail/$USER.
106: The alternative is that a lock file named
107: /usr/spool/mail/$USER.lock. */
108:
109: /* #define MAIL_USE_FLOCK */
110:
111: /* Define CLASH_DETECTION if you want lock files to be written
112: so that Emacs can tell instantly when you try to modify
113: a file that someone else has modified in his Emacs. */
114:
115: /* #define CLASH_DETECTION */
116:
117: /* Define SHORTNAMES if the C compiler can distinguish only
118: short names. It means that the stuff in ../shortnames
119: must be run to convert the long names to short ones. */
120:
121: /* #define SHORTNAMES */
122:
123: /* We do NOT use the Berkeley (and usg5.2.2) interface to nlist. */
124:
125: /* #define NLIST_STRUCT */
126:
127: /* The file containing the kernel's symbol table is called /unix. */
128:
129: #define KERNEL_FILE "/unix"
130:
131: /* The symbol in the kernel where the load average is found
132: is named avenrun. */
133:
134: #define LDAV_SYMBOL "avenrun"
135:
136: /* Special hacks needed to make Emacs run on this system. */
137:
138: /*
139: * Make the sigsetmask function go away. Don't know what the
140: * ramifications of this are, but doesn't seem possible to
141: * emulate it properly anyway at this point.
142: */
143:
144: #define sigsetmask(mask) /* Null expansion */
145:
146: /* setjmp and longjmp can safely replace _setjmp and _longjmp,
147: but they will run slower. */
148:
149: #define _setjmp setjmp
150: #define _longjmp longjmp
151:
152: /* On USG systems the system calls are interruptable by signals
153: that the user program has elected to catch. Thus the system call
154: must be retried in these cases. To handle this without massive
155: changes in the source code, we remap the standard system call names
156: to names for our own functions in sysdep.c that do the system call
157: with retries. */
158:
159: #define read sys_read
160: #define open sys_open
161: #define write sys_write
162:
163: #define INTERRUPTABLE_OPEN
164: #define INTERRUPTABLE_IO
165:
166: /* On USG systems these have different names */
167:
168: #define index strchr
169: #define rindex strrchr
170:
171: /* USG systems tend to put everything declared static
172: into the initialized data area, which becomes pure after dumping Emacs.
173: Foil this. Emacs carefully avoids static vars inside functions. */
174:
175: #define static
176:
177: /* Compiler bug bites on many systems when default ADDR_CORRECT is used. */
178:
179: #define ADDR_CORRECT(x) (x)
180:
181: /* Prevent -lg from being used for debugging. Not implemented? */
182:
183: #define LIBS_DEBUG
184:
185: /* Use terminfo instead of termcap. */
186:
187: #define TERMINFO
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