src/s/msdos.h

   1 /* System description file for MS-DOS
   2
   3    Copyright (C) 1993 Free Software Foundation, Inc.
   4
   5 This file is part of GNU Emacs.
   6
   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
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 GNU Emacs is distributed in the hope that it will be useful,
  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
  19 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  20
  21 /* Note: lots of stuff here was taken from s-msdos.h in demacs. */
  22
  23
  24 /*
  25  *      Define symbols to identify the version of Unix this is.
  26  *      Define all the symbols that apply correctly.
  27  */
  28
  29 /* #define UNIPLUS */
  30 /* #define USG5 */
  31 /* #define USG */
  32 /* #define HPUX */
  33 /* #define UMAX */
  34 /* #define BSD4_1 */
  35 /* #define BSD4_2 */
  36 /* #define BSD4_3 */
  37 /* #define BSD */
  38 /* #define VMS */
  39 #ifndef MSDOS
  40 #define MSDOS
  41 #endif
  42
  43 #define DOS_NT  /* MSDOS or WINDOWSNT */
  44 #undef BSD
  45 #undef VMS
  46
  47 /* SYSTEM_TYPE should indicate the kind of system you are using.
  48  It sets the Lisp variable system-type.  */
  49
  50 #define SYSTEM_TYPE "ms-dos"
  51
  52 #define SYMS_SYSTEM syms_of_dosfns()
  53
  54 /* NOMULTIPLEJOBS should be defined if your system's shell
  55  does not have "job control" (the ability to stop a program,
  56  run some other program, then continue the first one).  */
  57
  58 #define NOMULTIPLEJOBS
  59
  60 /* Emacs can read input using SIGIO and buffering characters itself,
  61    or using CBREAK mode and making C-g cause SIGINT.
  62    The choice is controlled by the variable interrupt_input.
  63    Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
  64
  65    SIGIO can be used only on systems that implement it (4.2 and 4.3).
  66    CBREAK mode has two disadvatages
  67      1) At least in 4.2, it is impossible to handle the Meta key properly.
  68         I hear that in system V this problem does not exist.
  69      2) Control-G causes output to be discarded.
  70         I do not know whether this can be fixed in system V.
  71
  72    Another method of doing input is planned but not implemented.
  73    It would have Emacs fork off a separate process
  74    to read the input and send it to the true Emacs process
  75    through a pipe.
  76 */
  77
  78 /* #define INTERRUPT_INPUT */
  79
  80 /* Letter to use in finding device name of first pty,
  81   if system supports pty's.  'a' means it is /dev/ptya0  */
  82
  83 /* #define FIRST_PTY_LETTER 'a' */
  84
  85 /*
  86  *      Define HAVE_PTYS if the system supports pty devices.
  87  */
  88
  89 /* #define HAVE_PTYS */
  90
  91 /*
  92  *      Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
  93  *      The 4.2 opendir, etc., library functions.
  94  */
  95
  96 /* #define NONSYSTEM_DIR_LIBRARY */
  97
  98 #define SYSV_SYSTEM_DIR
  99
 100 /* Define this symbol if your system has the functions bcopy, etc. */
 101
 102 #define BSTRING
 103
 104 /* Define this is the compiler understands `volatile'.  */
 105 #define HAVE_VOLATILE
 106
 107
 108 /* subprocesses should be defined if you want to
 109    have code for asynchronous subprocesses
 110    (as used in M-x compile and M-x shell).
 111    This is generally OS dependent, and not supported
 112    under most USG systems. */
 113
 114 #undef subprocesses
 115
 116 /* If your system uses COFF (Common Object File Format) then define the
 117    preprocessor symbol "COFF". */
 118
 119 #define COFF
 120
 121 /* define MAIL_USE_FLOCK if the mailer uses flock
 122    to interlock access to /usr/spool/mail/$USER.
 123    The alternative is that a lock file named
 124    /usr/spool/mail/$USER.lock.  */
 125
 126 /* #define MAIL_USE_FLOCK */
 127
 128 /* Define CLASH_DETECTION if you want lock files to be written
 129    so that Emacs can tell instantly when you try to modify
 130    a file that someone else has modified in his Emacs.  */
 131
 132 /* #define CLASH_DETECTION */
 133
 134 /* Here, on a separate page, add any special hacks needed
 135    to make Emacs work on this system.  For example,
 136    you might define certain system call names that don't
 137    exist on your system, or that do different things on
 138    your system and must be used only through an encapsulation
 139    (Which you should place, by convention, in sysdep.c).  */
 140 \f
 141 /* we use djgcc's malloc */
 142 /* #define SYSTEM_MALLOC */
 143 /* setjmp and longjmp can safely replace _setjmp and _longjmp,
 144    but they will run slower.  */
 145
 146 #define _setjmp setjmp
 147 #define _longjmp longjmp
 148
 149 #define NO_MODE_T
 150
 151 /* New chdir () routine. */
 152 #ifdef chdir
 153 #undef chdir
 154 #endif
 155 #define chdir sys_chdir
 156
 157 #define LIBS_SYSTEM -lpc
 158
 159 /* This somehow needs to be defined even though we use COFF.  */
 160 #define TEXT_START -1
 161
 162 #define ORDINARY_LINK
 163
 164 /* command.com does not understand `...` so we define this.  */
 165 #define LIB_GCC -Lgcc
 166 #define DONT_NEED_ENVIRON
 167 #define SEPCHAR ';'
 168
 169 #define NULL_DEVICE "nul"
 170 #define EXEC_SUFFIXES ".exe:.com:.bat:"
 171
 172 #define O_RDONLY        0x0001
 173 #define O_WRONLY        0x0002
 174 #define O_RDWR          0x0004
 175 #define O_CREAT         0x0100
 176 #define O_TRUNC         0x0200
 177 #define O_EXCL          0x0400
 178 #define O_APPEND        0x0800
 179 #define O_TEXT          0x4000
 180 #define O_BINARY        0x8000
 181
 182 #define HAVE_INVERSE_HYPERBOLIC
 183 #define FLOAT_CHECK_DOMAIN
 184 #define NO_MATHERR
 185
 186 /* When $TERM is "internal" then this is substituted:  */
 187 #define INTERNAL_TERMINAL "pc|bios|IBM PC with colour display:\
 188 :co#80:li#25:km:\
 189 :cm=\E@%.%.:\
 190 :do=^J:le=^H:up=\EU:ri=\ER:\
 191 :ti=\EA\027:te=\EA\007\EE:\
 192 :so=\EA\077:se=\EA\027:\
 193 :ms:mb=\EX\200:md=\EX\010:mk=\EA\161:me=\EA\027:\
 194 :cl=\EC:ce=\EE:\
 195 :vb=\EB\140:bl=\007:"
 196 #define fflush internal_flush
 197
 198 /* Define this to a function (Fdowncase, Fupcase) if your file system
 199    likes that */
 200 #define FILE_SYSTEM_CASE Fdowncase
 201
 202 /* Define this to be the separator between devices and paths */
 203 #define DEVICE_SEP ':'
 204
 205 /* We'll support either convention on MSDOG.  */
 206 #define IS_DIRECTORY_SEP(_c_) ((_c_) == '/' || (_c_) == '\\')
 207 #define IS_ANY_SEP(_c_) (IS_DIRECTORY_SEP (_c_) || IS_DEVICE_SEP (_c_))
 208
 209 /* bcopy under djgpp is quite safe */
 210 #define GAP_USE_BCOPY
 211 #define BCOPY_UPWARD_SAFE 1
 212 #define BCOPY_DOWNWARD_SAFE 1
 213
 214 /* Mode line description of a buffer's type.  */
 215 #define MODE_LINE_BINARY_TEXT(buf) (NILP(buf->buffer_file_type) ? "T" : "B")
 216
 217 /* We have (the code to control) a mouse.  */
 218 #define HAVE_MOUSE
 219
 220 /* We have support for faces.  */
 221 #define HAVE_FACES
 222
 223 /* Define one of these for easier conditionals.  */
 224 #ifdef HAVE_X_WINDOWS
 225 /* We need a little extra space, see ../../lisp/loadup.el */
 226 #define SYSTEM_PURESIZE_EXTRA 15000
 227 #define HAVE_X11R5
 228 #define LIBX11_SYSTEM -lxext -lsys
 229 #else
 230 /* We need a little extra space, see ../../lisp/loadup.el */
 231 #define SYSTEM_PURESIZE_EXTRA 30000
 232 #endif