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20c428fd | 1 | /* Definitions file for GNU Emacs running on AT&T's System V Release 4 |
92b47a4a TTN |
2 | Copyright (C) 1987, 1990, 1999, 2000, 2002, 2003, 2004, |
3 | 2005 Free Software Foundation, Inc. | |
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4 | |
5 | This file is part of GNU Emacs. | |
6 | ||
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7 | GNU Emacs is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
17385adc | 9 | the Free Software Foundation; either version 2, or (at your option) |
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10 | any later version. |
11 | ||
20c428fd | 12 | GNU Emacs is distributed in the hope that it will be useful, |
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13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
364c38d3 LK |
19 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
20 | Boston, MA 02110-1301, USA. */ | |
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21 | |
22 | /* This file written by James Van Artsdalen of Dell Computer Corporation. | |
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23 | * james@bigtex.cactus.org. Subsequently improved for Dell 2.2 by Eric |
24 | * S. Raymond <esr@snark.thyrsus.com>. | |
20c428fd JB |
25 | */ |
26 | ||
27 | /* Use the SysVr3 file for at least base configuration. */ | |
28 | ||
72a8c21e | 29 | #include "usg5-3.h" |
20c428fd JB |
30 | |
31 | #define USG5_4 | |
32 | ||
33 | /* We do have multiple jobs. Handle ^Z. */ | |
34 | ||
35 | #undef NOMULTIPLEJOBS | |
36 | ||
c42b4fab GM |
37 | /* Motif needs -lgen. */ |
38 | #define LIBS_SYSTEM -lsocket -lnsl -lelf -lgen | |
c21d3ee2 | 39 | #define ORDINARY_LINK |
20c428fd | 40 | |
5cb70bb5 | 41 | #if 0 |
5447018c JB |
42 | #ifdef ORDINARY_LINK |
43 | #define LIB_STANDARD -lc /usr/ucblib/libucb.a | |
44 | #else | |
c21d3ee2 RS |
45 | #define START_FILES pre-crt0.o /usr/ccs/lib/crt1.o /usr/ccs/lib/crti.o /usr/ccs/lib/values-Xt.o |
46 | #define LIB_STANDARD -lc /usr/ucblib/libucb.a /usr/ccs/lib/crtn.o | |
47 | #endif | |
5cb70bb5 RS |
48 | #else |
49 | ||
50 | #ifdef ORDINARY_LINK | |
51 | #define LIB_STANDARD | |
52 | #else | |
53 | #define START_FILES pre-crt0.o /usr/ccs/lib/crt1.o /usr/ccs/lib/crti.o /usr/ccs/lib/values-Xt.o | |
54 | #define LIB_STANDARD -lc /usr/ccs/lib/crtn.o | |
55 | #endif | |
56 | #endif | |
20c428fd | 57 | |
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58 | /* there are no -lg libraries on this system, and no libPW */ |
59 | ||
60 | #define LIBS_DEBUG | |
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61 | |
62 | /* Undump with ELF */ | |
63 | ||
64 | #undef COFF | |
65 | ||
66 | #define UNEXEC unexelf.o | |
67 | ||
821188d3 RS |
68 | /* <sys/stat.h> *defines* stat(2) as a static function. If "static" |
69 | * is blank, then many files will have a public definition for stat(2). | |
70 | */ | |
71 | ||
72 | #undef static | |
73 | ||
20c428fd JB |
74 | /* Get FIONREAD from <sys/filio.h>. Get <sys/ttold.h> to get struct |
75 | * tchars. But get <termio.h> first to make sure ttold.h doesn't | |
76 | * interfere. And don't try to use SIGIO yet. | |
77 | */ | |
78 | ||
f0ce95e7 RS |
79 | #ifndef NOT_C_CODE |
80 | #include <sys/wait.h> | |
81 | #endif | |
82 | ||
20c428fd | 83 | #ifdef emacs |
f9414412 | 84 | #ifndef NO_FILIO_H |
20c428fd | 85 | #include <sys/filio.h> |
f9414412 | 86 | #endif |
20c428fd JB |
87 | #include <termio.h> |
88 | #include <sys/ttold.h> | |
89 | #include <signal.h> | |
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90 | #include <sys/stream.h> |
91 | #include <sys/stropts.h> | |
92 | #include <sys/termios.h> | |
bb7b4368 | 93 | #define BROKEN_SIGIO |
20c428fd JB |
94 | #endif |
95 | ||
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96 | /* Some SVr4s don't define NSIG in sys/signal.h for ANSI environments; |
97 | * instead, there's a system variable _sys_nsig. Unfortunately, we need the | |
98 | * constant to dimension an array. So wire in the appropriate value here. | |
99 | */ | |
bb7b4368 | 100 | #define NSIG_MINIMUM 32 |
5447018c | 101 | |
20c428fd JB |
102 | /* We need bss_end from emacs.c for undumping */ |
103 | ||
104 | #ifndef USG_SHARED_LIBRARIES | |
105 | #define USG_SHARED_LIBRARIES | |
106 | #endif | |
107 | ||
108 | /* We can support this */ | |
109 | ||
110 | #define CLASH_DETECTION | |
111 | ||
112 | #define HAVE_PTYS | |
5447018c | 113 | #define HAVE_TERMIOS |
2373f91f RS |
114 | #undef BROKEN_TIOCGWINSZ |
115 | #undef BROKEN_TIOCGETC | |
20c428fd JB |
116 | |
117 | /* It is possible to receive SIGCHLD when there are no children | |
118 | waiting, because a previous waitsys(2) cleaned up the carcass of child | |
119 | without clearing the SIGCHLD pending info. So, use a non-blocking | |
120 | wait3 instead, which maps to waitpid(2) in SysVr4. */ | |
121 | ||
122 | #define HAVE_WAIT_HEADER | |
123 | #define WAITTYPE int | |
124 | #define wait3(status, options, rusage) \ | |
5bf62b08 | 125 | waitpid ((pid_t) -1, (status), (options)) |
20c428fd JB |
126 | #define WRETCODE(w) (w >> 8) |
127 | ||
128 | /* TIOCGPGRP is broken in SysVr4, so we can't send signals to PTY | |
129 | subprocesses the usual way. But TIOCSIGNAL does work for PTYs, and | |
130 | this is all we need. */ | |
131 | ||
132 | #define TIOCSIGSEND TIOCSIGNAL | |
133 | ||
134 | /* This change means that we don't loop through allocate_pty too many | |
135 | times in the (rare) event of a failure. */ | |
136 | ||
137 | #undef FIRST_PTY_LETTER | |
138 | #define FIRST_PTY_LETTER 'z' | |
139 | ||
140 | /* This sets the name of the master side of the PTY. */ | |
141 | ||
142 | #define PTY_NAME_SPRINTF strcpy (pty_name, "/dev/ptmx"); | |
143 | ||
144 | /* This sets the name of the slave side of the PTY. On SysVr4, | |
145 | grantpt(3) forks a subprocess, so keep sigchld_handler() from | |
146 | intercepting that death. If any child but grantpt's should die | |
147 | within, it should be caught after sigrelse(2). */ | |
148 | ||
5bf62b08 RS |
149 | #define PTY_TTY_NAME_SPRINTF \ |
150 | { \ | |
151 | char *ptsname (), *ptyname; \ | |
152 | \ | |
153 | sighold (SIGCLD); \ | |
154 | if (grantpt (fd) == -1) \ | |
bb7b4368 | 155 | { emacs_close (fd); return -1; } \ |
5bf62b08 RS |
156 | sigrelse (SIGCLD); \ |
157 | if (unlockpt (fd) == -1) \ | |
bb7b4368 | 158 | { emacs_close (fd); return -1; } \ |
5bf62b08 | 159 | if (!(ptyname = ptsname (fd))) \ |
bb7b4368 | 160 | { emacs_close (fd); return -1; } \ |
5bf62b08 RS |
161 | strncpy (pty_name, ptyname, sizeof (pty_name)); \ |
162 | pty_name[sizeof (pty_name) - 1] = 0; \ | |
20c428fd JB |
163 | } |
164 | ||
165 | /* Push various streams modules onto a PTY channel. */ | |
166 | ||
167 | #define SETUP_SLAVE_PTY \ | |
168 | if (ioctl (xforkin, I_PUSH, "ptem") == -1) \ | |
169 | fatal ("ioctl I_PUSH ptem", errno); \ | |
170 | if (ioctl (xforkin, I_PUSH, "ldterm") == -1) \ | |
171 | fatal ("ioctl I_PUSH ldterm", errno); \ | |
172 | if (ioctl (xforkin, I_PUSH, "ttcompat") == -1) \ | |
173 | fatal ("ioctl I_PUSH ttcompat", errno); | |
174 | ||
5447018c | 175 | /* Undo the SVr3 X11 library definition */ |
8c64cf16 | 176 | #undef LIB_X11_LIB |
5447018c | 177 | |
bd307392 JB |
178 | /* The definition of this in s-usg5-3.h is not needed in 5.4. */ |
179 | /* liblnsl_s should never be used. The _s suffix implies a shared | |
180 | library, as opposed to a DLL. Share libraries were used in SVR3, and are | |
181 | available only in order to allow SVR3 binaries to run. They should not be | |
182 | linked in to new binaries. -- caraway!pinkas@caraway.intel.com. */ | |
183 | #undef LIBX10_SYSTEM | |
20c428fd | 184 | #undef LIBX11_SYSTEM |
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185 | |
186 | /* Tell x11term.c and keyboard.c we have the system V streams feature. */ | |
187 | #define SYSV_STREAMS | |
188 | ||
189 | /* This definition was suggested for next release. | |
190 | So give it a try. */ | |
191 | #define HAVE_SOCKETS | |
5cb70bb5 | 192 | |
c42b4fab GM |
193 | /* Markus Weiand <weiand@khof.com> says this is needed for Motif on |
194 | SINIX. */ | |
195 | #undef LIBS_SYSTEM | |
196 | #define LIBS_SYSTEM -lgen | |
ab5796a9 MB |
197 | |
198 | /* arch-tag: 1a0ed909-5faa-434b-b7c3-9d86c63d53a6 | |
199 | (do not change this comment) */ |