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1.1 root 1: /* Definitions file for GNU Emacs running on AT&T's System V.0
2: Copyright (C) 1985 Richard M. Stallman.
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: #define USG5_0
31:
32: /* SYSTEM_TYPE should indicate the kind of system you are using.
33: It sets the Lisp variable system-type. */
34:
35: #define SYSTEM_TYPE "usg-unix-v"
36:
37: /* nomultiplejobs should be defined if your system's shell
38: does not have "job control" (the ability to stop a program,
39: run some other program, then continue the first one). */
40:
41: #define NOMULTIPLEJOBS
42:
43: /* Default is to set interrupt_input to 0: don't do input buffering within Emacs */
44:
45: /* #define INTERRUPT_INPUT */
46:
47: /* Letter to use in finding device name of first pty,
48: if system supports pty's. 'p' means it is /dev/ptyp0 */
49:
50: #define FIRST_PTY_LETTER 'p'
51:
52: /*
53: * Define HAVE_TIMEVAL if the system supports the BSD style clock values.
54: * Look in <sys/time.h> for a timeval structure.
55: */
56:
57: /* #define HAVE_TIMEVAL */
58:
59: /*
60: * Define HAVE_SELECT if the system supports the `select' system call.
61: */
62:
63: /* #define HAVE_SELECT */
64:
65: /*
66: * Define HAVE_PTYS if the system supports pty devices.
67: */
68:
69: /* #define HAVE_PTYS */
70:
71: /*
72: * Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
73: * The 4.2 opendir, etc., library functions.
74: */
75:
76: #define NONSYSTEM_DIR_LIBRARY
77:
78: /* Define this symbol if your system has the functions bcopy, etc. */
79:
80: /* #define BSTRING */
81:
82: /* subprocesses should be defined if you want to
83: have code for asynchronous subprocesses
84: (as used in M-x compile and M-x shell).
85: This is supposed to work now on system V release 2. */
86:
87: #define subprocesses
88:
89: /* If your system uses COFF (Common Object File Format) then define the
90: preprocessor symbol "COFF". */
91:
92: #define COFF
93:
94: /* define MAIL_USE_FLOCK if the mailer uses flock
95: to interlock access to /usr/spool/mail/$USER.
96: The alternative is that a lock file named
97: /usr/spool/mail/$USER.lock. */
98:
99: /* #define MAIL_USE_FLOCK */
100:
101: /* Define CLASH_DETECTION if you want lock files to be written
102: so that Emacs can tell instantly when you try to modify
103: a file that someone else has modified in his Emacs. */
104:
105: /* #define CLASH_DETECTION */
106:
107: /* Define SHORTNAMES if the C compiler can distinguish only
108: short names. It means that the stuff in ../shortnames
109: must be run to convert the long names to short ones. */
110:
111: #define SHORTNAMES
112:
113: /* Special hacks needed to make Emacs run on this system. */
114:
115: /*
116: * Make the sigsetmask function go away. Don't know what the
117: * ramifications of this are, but doesn't seem possible to
118: * emulate it properly anyway at this point.
119: */
120:
121: #define sigsetmask(mask) /* Null expansion */
122:
123: /* setjmp and longjmp can safely replace _setjmp and _longjmp,
124: but they will run slower. */
125:
126: #define _setjmp setjmp
127: #define _longjmp longjmp
128:
129: /* On USG systems the system calls are interruptable by signals
130: that the user program has elected to catch. Thus the system call
131: must be retried in these cases. To handle this without massive
132: changes in the source code, we remap the standard system call names
133: to names for our own functions in sysdep.c that do the system call
134: with retries. */
135:
136: #define read sys_read
137: #define open sys_open
138: #define write sys_write
139:
140: /* On USG systems these have different names */
141:
142: #define index strchr
143: #define rindex strrchr
144:
145: /* USG systems tend to put everything declared static
146: into the initialized data area, which becomes pure after dumping Emacs.
147: Foil this. Emacs carefully avoids static vars inside functions. */
148:
149: #define static
150:
151: /* Compiler bug bites on many systems when default ADDR_CORRECT is used. */
152:
153: #define ADDR_CORRECT(x) (x)
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