annotate src/s/usg5-0.h @ 321:19dcec799385 r21-0-58

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date Mon, 13 Aug 2007 10:46:44 +0200
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1 /* Definitions file for GNU Emacs running on AT&T's System V.0
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2 Copyright (C) 1985, 1986 Free Software Foundation, Inc.
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3
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4 This file is part of GNU Emacs.
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5
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6 GNU Emacs is free software; you can redistribute it and/or modify
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7 it under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 2, or (at your option)
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9 any later version.
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10
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11 GNU Emacs is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs; see the file COPYING. If not, write to
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18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 Boston, MA 02111-1307, USA. */
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20
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21 /* Synched up with: FSF 19.31. */
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22
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23 /*
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24 * Define symbols to identify the version of Unix this is.
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25 * Define all the symbols that apply correctly.
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26 */
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27
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28 #define USG /* System III, System V, etc */
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29
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30 #define USG5
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31 #define USG5_0
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32
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33 /* SYSTEM_TYPE should indicate the kind of system you are using.
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34 It sets the Lisp variable system-type. */
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35
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36 #define SYSTEM_TYPE "usg-unix-v"
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37
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38 /* Letter to use in finding device name of first pty,
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39 if system supports pty's. 'p' means it is /dev/ptyp0 */
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40
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41 #define FIRST_PTY_LETTER 'p'
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42
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43 /*
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44 * Define HAVE_PTYS if the system supports pty devices.
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45 */
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46
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47 /* #define HAVE_PTYS */
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48
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49 /* If your system uses COFF (Common Object File Format) then define the
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50 preprocessor symbol "COFF". */
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51
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52 #define COFF
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53
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54 /* define MAIL_USE_FLOCK if the mailer uses flock
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55 to interlock access to /usr/spool/mail/$USER.
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56 The alternative is that a lock file named
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57 /usr/spool/mail/$USER.lock. */
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58
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59 /* #define MAIL_USE_FLOCK */
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60
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61 /* The file containing the kernel's symbol table is called /unix. */
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62
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63 #define KERNEL_FILE "/unix"
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64
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65 /* The symbol in the kernel where the load average is found
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66 is named avenrun. */
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67
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68 #define LDAV_SYMBOL "avenrun"
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69
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70 /* Special hacks needed to make Emacs run on this system. */
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71
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72 /* On USG systems the system calls are interruptible by signals
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73 that the user program has elected to catch. Thus the system call
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74 must be retried in these cases. To handle this without massive
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75 changes in the source code, we remap the standard system call names
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76 to names for our own functions in sysdep.c that do the system call
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77 with retries. */
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78
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79 #define INTERRUPTIBLE_OPEN
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80 #define INTERRUPTIBLE_IO
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81
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82 /* USG systems tend to put everything declared static
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83 into the initialized data area, which becomes pure after dumping Emacs.
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84 Foil this by defining NO_REMAP, which makes the purespace not pure.
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85 (Formerly this was avoided by doing '#define static' but this just
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86 fails with inline functions.) */
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87
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88 #ifndef DONT_DEFINE_NO_REMAP
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89 #define NO_REMAP
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90 #endif
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91
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92 /* Compiler bug bites on many systems when default ADDR_CORRECT is used. */
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93
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94 #define ADDR_CORRECT(x) (x)
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95
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96 /* Prevent -lg from being used for debugging. Not implemented? */
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97
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98 #define LIBS_DEBUG