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1 | /* Definitions file for GNU Emacs running on RTU 3.0, ucb universe. |
2 | Copyright (C) 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 | |
17385adc | 8 | the Free Software Foundation; either version 2, or (at your option) |
20c428fd JB |
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 | |
3b7ad313 EN |
18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
20c428fd JB |
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 BSD4_2 | |
6df54671 | 28 | #define BSD_SYSTEM |
20c428fd JB |
29 | #define RTU |
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 "rtu" | |
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 | /* Emacs can read input using SIGIO and buffering characters itself, | |
43 | or using CBREAK mode and making C-g cause SIGINT. | |
44 | The choice is controlled by the variable interrupt_input. | |
45 | Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO) | |
46 | ||
47 | SIGIO can be used only on systems that implement it (4.2 and 4.3). | |
eb8c3be9 | 48 | CBREAK mode has two disadvantages |
20c428fd JB |
49 | 1) At least in 4.2, it is impossible to handle the Meta key properly. |
50 | I hear that in system V this problem does not exist. | |
51 | 2) Control-G causes output to be discarded. | |
52 | I do not know whether this can be fixed in system V. | |
53 | ||
54 | Another method of doing input is planned but not implemented. | |
55 | It would have Emacs fork off a separate process | |
56 | to read the input and send it to the true Emacs process | |
57 | through a pipe. | |
58 | */ | |
59 | ||
60 | #undef INTERRUPT_INPUT | |
61 | ||
62 | /* Letter to use in finding device name of first pty, | |
63 | if system supports pty's. 'a' means it is /dev/ptya0 */ | |
64 | ||
65 | #define FIRST_PTY_LETTER 'z' /* i.e. no PTY_LETTERs */ | |
66 | ||
20c428fd JB |
67 | /* |
68 | * Define HAVE_PTYS if the system supports pty devices. | |
69 | */ | |
70 | ||
71 | #define HAVE_PTYS | |
72 | ||
73 | /* Define this macro if system defines a type `union wait'. */ | |
74 | ||
75 | #define HAVE_UNION_WAIT | |
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 | /* The system library bcopy() is broken in RTU. For one thing, it expects | |
90 | the length to be less than 64k. */ | |
91 | #undef BSTRING | |
92 | ||
93 | /* subprocesses should be defined if you want to | |
94 | have code for asynchronous subprocesses | |
95 | (as used in M-x compile and M-x shell). | |
96 | This is generally OS dependent, and not supported | |
97 | under most USG systems. */ | |
98 | ||
99 | #define subprocesses | |
100 | ||
101 | /* If your system uses COFF (Common Object File Format) then define the | |
102 | preprocessor symbol "COFF". */ | |
103 | ||
104 | #undef COFF | |
105 | ||
106 | /* define MAIL_USE_FLOCK if the mailer uses flock | |
107 | to interlock access to /usr/spool/mail/$USER. | |
108 | The alternative is that a lock file named | |
109 | /usr/spool/mail/$USER.lock. */ | |
110 | ||
111 | #undef MAIL_USE_FLOCK | |
112 | ||
113 | /* Define CLASH_DETECTION if you want lock files to be written | |
114 | so that Emacs can tell instantly when you try to modify | |
115 | a file that someone else has modified in his Emacs. */ | |
116 | ||
117 | #undef CLASH_DETECTION | |
118 | ||
119 | /* We use the Berkeley (and usg5.2.2) interface to nlist. */ | |
120 | ||
121 | #define NLIST_STRUCT | |
122 | ||
123 | /* The symbol in the kernel where the load average is found | |
124 | is named _avenrun. */ | |
125 | ||
126 | #define LDAV_SYMBOL "_avenrun" | |
127 | \f | |
128 | /* Special hacks needed to make Emacs run on this system. */ | |
129 | ||
eb8c3be9 | 130 | /* On RTU systems (like USG) the system calls are interruptible by signals |
20c428fd JB |
131 | that the user program has elected to catch. Thus the system call |
132 | must be retried in these cases. To handle this without massive | |
133 | changes in the source code, we remap the standard system call names | |
134 | to names for our own functions in sysdep.c that do the system call | |
135 | with retries. */ | |
136 | ||
137 | #define read sys_read | |
138 | #define open sys_open | |
139 | #define write sys_write | |
140 | ||
141 | #define INTERRUPTIBLE_OPEN | |
142 | #define INTERRUPTIBLE_IO | |
143 | ||
144 | /* The "fsync" call on RTU versions 3.0 and 3.1 is badly broken! | |
145 | This hack below isn't the best solution, but without it this | |
146 | program will cause the whole system to hang! !@#$#%$ Masscomp! */ | |
147 | ||
148 | #define fsync(x) 0 /* "Comment out" fsync calls */ | |
149 | ||
150 | /* RTU has IPC instead of Unix-domain sockets. */ | |
151 | ||
152 | #define HAVE_SYSVIPC | |
153 | ||
154 | /* This is how to get the device name of the tty end of a pty. */ | |
155 | #define PTY_TTY_NAME_SPRINTF \ | |
d4327fec | 156 | sprintf (pty_name, "/dev/ttyp%x", i); |
20c428fd JB |
157 | |
158 | /* This is how to get the device name of the control end of a pty. */ | |
159 | #define PTY_NAME_SPRINTF \ | |
d4327fec | 160 | sprintf (pty_name, "/dev/pty%x", i); |
651c847c RS |
161 | |
162 | /* (Assume) we do have vfork. */ | |
163 | ||
164 | #define HAVE_VFORK | |
a9f7a967 RS |
165 | |
166 | /* Process groups work in the traditional BSD manner. */ | |
167 | ||
168 | #define BSD_PGRPS |