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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 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:
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_TIMEVAL if the system supports the BSD style clock values.
53: * Look in <sys/time.h> for a timeval structure.
54: */
55:
56: /* #define HAVE_TIMEVAL */
57:
58: /*
59: * Define HAVE_SELECT if the system supports the `select' system call.
60: */
61:
62: /* #define HAVE_SELECT */
63:
64: /*
65: * Define HAVE_PTYS if the system supports pty devices.
66: */
67:
68: /* #define HAVE_PTYS */
69:
70: /*
71: * Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
72: * The 4.2 opendir, etc., library functions.
73: */
74:
75: #define NONSYSTEM_DIR_LIBRARY
76:
77: /* Define this symbol if your system has the functions bcopy, etc. */
78:
79: /* #define BSTRING */
80:
81: /* subprocesses should be defined if you want to
82: have code for asynchronous subprocesses
83: (as used in M-x compile and M-x shell).
84: This is supposed to work now on system V release 2. */
85:
86: #define subprocesses
87:
88: /* If your system uses COFF (Common Object File Format) then define the
89: preprocessor symbol "COFF". */
90:
91: #define COFF
92:
93: /* define MAIL_USE_FLOCK if the mailer uses flock
94: to interlock access to /usr/spool/mail/$USER.
95: The alternative is that a lock file named
96: /usr/spool/mail/$USER.lock. */
97:
98: /* #define MAIL_USE_FLOCK */
99:
100: /* Define CLASH_DETECTION if you want lock files to be written
101: so that Emacs can tell instantly when you try to modify
102: a file that someone else has modified in his Emacs. */
103:
104: /* #define CLASH_DETECTION */
105:
106: /* Define SHORTNAMES if the C compiler can distinguish only
107: short names. It means that the stuff in ../shortnames
108: must be run to convert the long names to short ones. */
109:
110: /* #define SHORTNAMES */
111:
112: /* Say we use the Berkeley style of intrface to nlist,
113: not the earlier system V style. */
114:
115: #define NLIST_STRUCT
116:
117: /* Special hacks needed to make Emacs run on this system. */
118:
119: /* Define this to cause -N to be passed to ld. This is needed
120: in uniplus because of its funny memory space layout. */
121:
122: /* #define LOADER_N_SWITCH */
123:
124: /*
125: * Make the sigsetmask function go away. Don't know what the
126: * ramifications of this are, but doesn't seem possible to
127: * emulate it properly anyway at this point.
128: */
129:
130: #define sigsetmask(mask) /* Null expansion */
131:
132: /* setjmp and longjmp can safely replace _setjmp and _longjmp,
133: but they will run slower. */
134:
135: #define _setjmp setjmp
136: #define _longjmp longjmp
137:
138: /* On USG systems the system calls are interruptable by signals
139: that the user program has elected to catch. Thus the system call
140: must be retried in these cases. To handle this without massive
141: changes in the source code, we remap the standard system call names
142: to names for our own functions in sysdep.c that do the system call
143: with retries. */
144:
145: #define read sys_read
146: #define open sys_open
147: #define write sys_write
148:
149: /* On USG systems these have different names */
150:
151: #define index strchr
152: #define rindex strrchr
153:
154: /* USG systems tend to put everything declared static
155: into the initialized data area, which becomes pure after dumping Emacs.
156: Foil this. Emacs carefully avoids static vars inside functions. */
157:
158: #define static
159:
160: /* Compiler bug bites on many systems when default ADDR_CORRECT is used. */
161:
162: #define ADDR_CORRECT(x) (x)
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