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- /* System description file for MS-DOS
-
- Copyright (C) 1993 Free Software Foundation, Inc.
-
- This file is part of GNU Emacs.
-
- GNU Emacs is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
-
- GNU Emacs is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with GNU Emacs; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- /* Note: lots of stuff here was taken from s-msdos.h in demacs. */
-
-
- /*
- * Define symbols to identify the version of Unix this is.
- * Define all the symbols that apply correctly.
- */
-
- /* #define UNIPLUS */
- /* #define USG5 */
- /* #define USG */
- /* #define HPUX */
- /* #define UMAX */
- /* #define BSD4_1 */
- /* #define BSD4_2 */
- /* #define BSD4_3 */
- /* #define BSD */
- /* #define VMS */
- #ifndef MSDOS
- #define MSDOS
- #endif
- #undef BSD
- #undef VMS
-
- /* SYSTEM_TYPE should indicate the kind of system you are using.
- It sets the Lisp variable system-type. */
-
- #define SYSTEM_TYPE "ms-dos"
-
- #define SYMS_SYSTEM syms_of_dosfns()
-
- /* NOMULTIPLEJOBS should be defined if your system's shell
- does not have "job control" (the ability to stop a program,
- run some other program, then continue the first one). */
-
- #define NOMULTIPLEJOBS
-
- /* Emacs can read input using SIGIO and buffering characters itself,
- or using CBREAK mode and making C-g cause SIGINT.
- The choice is controlled by the variable interrupt_input.
- Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
-
- SIGIO can be used only on systems that implement it (4.2 and 4.3).
- CBREAK mode has two disadvatages
- 1) At least in 4.2, it is impossible to handle the Meta key properly.
- I hear that in system V this problem does not exist.
- 2) Control-G causes output to be discarded.
- I do not know whether this can be fixed in system V.
-
- Another method of doing input is planned but not implemented.
- It would have Emacs fork off a separate process
- to read the input and send it to the true Emacs process
- through a pipe.
- */
-
- /* #define INTERRUPT_INPUT */
-
- /* Letter to use in finding device name of first pty,
- if system supports pty's. 'a' means it is /dev/ptya0 */
-
- /* #define FIRST_PTY_LETTER 'a' */
-
- /*
- * Define HAVE_TIMEVAL if the system supports the BSD style clock values.
- * Look in <sys/time.h> for a timeval structure.
- */
-
- #define HAVE_TIMEVAL
-
- /*
- * Define HAVE_SELECT if the system supports the `select' system call.
- */
-
- /* #define HAVE_SELECT */
-
- /*
- * Define HAVE_PTYS if the system supports pty devices.
- */
-
- /* #define HAVE_PTYS */
-
- /*
- * Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
- * The 4.2 opendir, etc., library functions.
- */
-
- /* #define NONSYSTEM_DIR_LIBRARY */
-
- #define SYSV_SYSTEM_DIR
-
- /* Define this symbol if your system has the functions bcopy, etc. */
-
- #define BSTRING
-
- /* Define this is the compiler understands `volatile'. */
- #define HAVE_VOLATILE
-
-
- /* subprocesses should be defined if you want to
- have code for asynchronous subprocesses
- (as used in M-x compile and M-x shell).
- This is generally OS dependent, and not supported
- under most USG systems. */
-
- #undef subprocesses
-
- /* If your system uses COFF (Common Object File Format) then define the
- preprocessor symbol "COFF". */
-
- #define COFF
-
- /* define MAIL_USE_FLOCK if the mailer uses flock
- to interlock access to /usr/spool/mail/$USER.
- The alternative is that a lock file named
- /usr/spool/mail/$USER.lock. */
-
- /* #define MAIL_USE_FLOCK */
-
- /* Define CLASH_DETECTION if you want lock files to be written
- so that Emacs can tell instantly when you try to modify
- a file that someone else has modified in his Emacs. */
-
- /* #define CLASH_DETECTION */
-
- /* Here, on a separate page, add any special hacks needed
- to make Emacs work on this system. For example,
- you might define certain system call names that don't
- exist on your system, or that do different things on
- your system and must be used only through an encapsulation
- (Which you should place, by convention, in sysdep.c). */
-
- /* Some compilers tend to put everything declared static
- into the initialized data area, which becomes pure after dumping Emacs.
- On these systems, you must #define static as nothing to foil this.
- Note that emacs carefully avoids static vars inside functions. */
-
- /* #define static */
-
- /* we use djgcc's malloc */
- /* #define SYSTEM_MALLOC */
- /* setjmp and longjmp can safely replace _setjmp and _longjmp,
- but they will run slower. */
-
- #define _setjmp setjmp
- #define _longjmp longjmp
-
- #define NO_MODE_T
-
- /* we can use dj's getpagesize() */
- #define HAVE_GETPAGESIZE
-
- /* New chdir () routine. */
- #ifdef chdir
- #undef chdir
- #endif
- #define chdir sys_chdir
-
- #define LIBS_SYSTEM -lpc
-
- /* This somehow needs to be defined even though we use COFF. */
- #define TEXT_START -1
-
- #define ORDINARY_LINK
-
- /* command.com does not under stand `...` so we define this. */
- #define LIB_GCC -Lgcc
- #define DONT_NEED_ENVIRON
- #define SEPCHAR ';'
-
- #define NULL_DEVICE "nul"
- #define EXEC_SUFFIXES ".exe:.com:.bat:"
-
- #define O_RDONLY 0x0001
- #define O_WRONLY 0x0002
- #define O_RDWR 0x0004
- #define O_CREAT 0x0100
- #define O_TRUNC 0x0200
- #define O_EXCL 0x0400
- #define O_APPEND 0x0800
- #define O_TEXT 0x4000
- #define O_BINARY 0x8000
-
- #define HAVE_INVERSE_HYPERBOLIC
- #define FLOAT_CHECK_DOMAIN
- #define NO_MATHERR
-
- /* When $TERM is "internal" then this is substituted: */
- #define INTERNAL_TERMINAL "pc|bios|IBM PC with colour display:\
- :co#80:li#25:km:\
- :cm=\E@%.%.:\
- :do=^J:le=^H:up=\EU:ri=\ER:\
- :ti=\EA\027:te=\EA\007\EE:\
- :so=\EA\077:se=\EA\027:\
- :ms:mb=\EX\200:md=\EX\010:mk=\EA\161:me=\EA\027:\
- :cl=\EC:ce=\EE:\
- :vb=\EB\140:bl=\007:"
- #define fflush internal_flush
-
- /* Define this to a function (Fdowncase, Fupcase) if your file system
- likes that */
- #define FILE_SYSTEM_CASE Fdowncase
-
- /* bcopy under djgpp is quite safe */
- #define GAP_USE_BCOPY
- #define BCOPY_UPWARD_SAFE 1
- #define BCOPY_DOWNWARD_SAFE 1
-
- /* We need a little extra space, see ../../lisp/loadup.el */
- #define PURESIZE 240000
-
- /* We have (the code to control) a mouse. */
- #define HAVE_MOUSE
-