code.delx.au - gnu-emacs/blob - 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, Inc., 59 Temple Place - Suite 330,
  20 Boston, MA 02111-1307, USA.  */
  21
  22 /* Note: lots of stuff here was taken from s-msdos.h in demacs. */
  23
  24
  25 /*
  26  *      Define symbols to identify the version of Unix this is.
  27  *      Define all the symbols that apply correctly.
  28  */
  29
  30 /* #define UNIPLUS */
  31 /* #define USG5 */
  32 /* #define USG */
  33 /* #define HPUX */
  34 /* #define UMAX */
  35 /* #define BSD4_1 */
  36 /* #define BSD4_2 */
  37 /* #define BSD4_3 */
  38 /* #define BSD */
  39 /* #define VMS */
  40 #ifndef MSDOS
  41 #define MSDOS
  42 #endif
  43
  44 #ifdef __GO32__
  45 #ifndef __DJGPP__
  46 #define __DJGPP__ 1     /* V2 defines __DJGPP__ == 2 */
  47 #else
  48 You lose; /* Emacs for DOS must be compiled with DJGPP V1 */
  49 #endif
  50 #else
  51 You lose; /* Emacs for DOS must be compiled with DJGPP */
  52 #endif
  53
  54 #define DOS_NT  /* MSDOS or WINDOWSNT */
  55 #undef BSD
  56 #undef VMS
  57
  58 /* SYSTEM_TYPE should indicate the kind of system you are using.
  59  It sets the Lisp variable system-type.  */
  60
  61 #define SYSTEM_TYPE "ms-dos"
  62
  63 #define SYMS_SYSTEM syms_of_dosfns();syms_of_msdos()
  64
  65 /* NOMULTIPLEJOBS should be defined if your system's shell
  66  does not have "job control" (the ability to stop a program,
  67  run some other program, then continue the first one).  */
  68
  69 #define NOMULTIPLEJOBS
  70
  71 /* Emacs can read input using SIGIO and buffering characters itself,
  72    or using CBREAK mode and making C-g cause SIGINT.
  73    The choice is controlled by the variable interrupt_input.
  74    Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
  75
  76    SIGIO can be used only on systems that implement it (4.2 and 4.3).
  77    CBREAK mode has two disadvantages
  78      1) At least in 4.2, it is impossible to handle the Meta key properly.
  79         I hear that in system V this problem does not exist.
  80      2) Control-G causes output to be discarded.
  81         I do not know whether this can be fixed in system V.
  82
  83    Another method of doing input is planned but not implemented.
  84    It would have Emacs fork off a separate process
  85    to read the input and send it to the true Emacs process
  86    through a pipe.
  87 */
  88
  89 /* #define INTERRUPT_INPUT */
  90
  91 /* Letter to use in finding device name of first pty,
  92   if system supports pty's.  'a' means it is /dev/ptya0  */
  93
  94 /* #define FIRST_PTY_LETTER 'a' */
  95
  96 /*
  97  *      Define HAVE_PTYS if the system supports pty devices.
  98  */
  99
 100 /* #define HAVE_PTYS */
 101
 102 /*
 103  *      Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
 104  *      The 4.2 opendir, etc., library functions.
 105  */
 106
 107 /* #define NONSYSTEM_DIR_LIBRARY */
 108
 109 #define SYSV_SYSTEM_DIR
 110
 111 /* Define this symbol if your system has the functions bcopy, etc. */
 112
 113 #define BSTRING
 114
 115 /* Define this is the compiler understands `volatile'.  */
 116 #define HAVE_VOLATILE
 117
 118
 119 /* subprocesses should be defined if you want to
 120    have code for asynchronous subprocesses
 121    (as used in M-x compile and M-x shell).
 122    This is generally OS dependent, and not supported
 123    under most USG systems. */
 124
 125 #undef subprocesses
 126
 127 /* If your system uses COFF (Common Object File Format) then define the
 128    preprocessor symbol "COFF". */
 129
 130 #define COFF
 131
 132 /* define MAIL_USE_FLOCK if the mailer uses flock
 133    to interlock access to /usr/spool/mail/$USER.
 134    The alternative is that a lock file named
 135    /usr/spool/mail/$USER.lock.  */
 136
 137 /* #define MAIL_USE_FLOCK */
 138
 139 /* Define CLASH_DETECTION if you want lock files to be written
 140    so that Emacs can tell instantly when you try to modify
 141    a file that someone else has modified in his Emacs.  */
 142
 143 /* #define CLASH_DETECTION */
 144
 145 /* Here, on a separate page, add any special hacks needed
 146    to make Emacs work on this system.  For example,
 147    you might define certain system call names that don't
 148    exist on your system, or that do different things on
 149    your system and must be used only through an encapsulation
 150    (Which you should place, by convention, in sysdep.c).  */
 151 \f
 152 /* we use djgcc's malloc */
 153 /* #define SYSTEM_MALLOC */
 154 /* setjmp and longjmp can safely replace _setjmp and _longjmp,
 155    but they will run slower.  */
 156
 157 #define _setjmp setjmp
 158 #define _longjmp longjmp
 159
 160 #define NO_MODE_T
 161
 162 /* New chdir () routine. */
 163 #ifdef chdir
 164 #undef chdir
 165 #endif
 166 #define chdir sys_chdir
 167
 168 #define LIBS_SYSTEM -lpc
 169
 170 /* This somehow needs to be defined even though we use COFF.  */
 171 #define TEXT_START -1
 172
 173 #define ORDINARY_LINK
 174
 175 /* command.com does not understand `...` so we define this.  */
 176 #define LIB_GCC -Lgcc
 177 #define DONT_NEED_ENVIRON
 178 #define SEPCHAR ';'
 179
 180 #define NULL_DEVICE "nul"
 181 #define EXEC_SUFFIXES ".exe:.com:.bat:"
 182
 183 #define O_RDONLY        0x0001
 184 #define O_WRONLY        0x0002
 185 #define O_RDWR          0x0004
 186 #define O_CREAT         0x0100
 187 #define O_TRUNC         0x0200
 188 #define O_EXCL          0x0400
 189 #define O_APPEND        0x0800
 190 #define O_TEXT          0x4000
 191 #define O_BINARY        0x8000
 192
 193 #define HAVE_INVERSE_HYPERBOLIC
 194 #define FLOAT_CHECK_DOMAIN
 195 #define NO_MATHERR
 196
 197 /* When $TERM is "internal" then this is substituted:  */
 198 #define INTERNAL_TERMINAL "pc|bios|IBM PC with colour display:\
 199 :co#80:li#25:km:ms:cm=<CM>:cl=<CL>:ce=<CE>:"
 200
 201 /* Define this to a function (Fdowncase, Fupcase) if your file system
 202    likes that */
 203 #define FILE_SYSTEM_CASE Fdowncase
 204
 205 /* Define this to be the separator between devices and paths */
 206 #define DEVICE_SEP ':'
 207
 208 /* We'll support either convention on MSDOG.  */
 209 #define IS_DIRECTORY_SEP(_c_) ((_c_) == '/' || (_c_) == '\\')
 210 #define IS_ANY_SEP(_c_) (IS_DIRECTORY_SEP (_c_) || IS_DEVICE_SEP (_c_))
 211
 212 /* Call init_gettimeofday when TZ changes.  */
 213 #define LOCALTIME_CACHE
 214 #define tzset init_gettimeofday
 215
 216 /* bcopy under djgpp is quite safe */
 217 #define GAP_USE_BCOPY
 218 #define BCOPY_UPWARD_SAFE 1
 219 #define BCOPY_DOWNWARD_SAFE 1
 220
 221 /* Mode line description of a buffer's type.  */
 222 #define MODE_LINE_BINARY_TEXT(buf) (NILP(buf->buffer_file_type) ? "T" : "B")
 223
 224 /* We have (the code to control) a mouse.  */
 225 #define HAVE_MOUSE
 226
 227 /* We canuse mouse menus.  */
 228 #define HAVE_MENUS
 229
 230 /* We have support for faces.  */
 231 #define HAVE_FACES
 232
 233 /* Define one of these for easier conditionals.  */
 234 #ifdef HAVE_X_WINDOWS
 235 /* We need a little extra space, see ../../lisp/loadup.el */
 236 #define SYSTEM_PURESIZE_EXTRA 15000
 237 #define HAVE_X11R5
 238 #define LIBX11_SYSTEM -lxext -lsys
 239 #else
 240 /* We need a little extra space, see ../../lisp/loadup.el */
 241 #define SYSTEM_PURESIZE_EXTRA 85000
 242 #endif