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278 lines
7.6 KiB
C
278 lines
7.6 KiB
C
/* System description file for MS-DOS
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Copyright (C) 1993, 1996, 1997, 2001 Free Software Foundation, Inc.
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This file is part of GNU Emacs.
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GNU Emacs is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Emacs is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Emacs; see the file COPYING. If not, write to
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the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* Note: lots of stuff here was taken from s-msdos.h in demacs. */
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/*
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* Define symbols to identify the version of Unix this is.
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* Define all the symbols that apply correctly.
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*/
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/* #define UNIPLUS */
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/* #define USG5 */
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/* #define USG */
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/* #define HPUX */
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/* #define UMAX */
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/* #define BSD4_1 */
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/* #define BSD4_2 */
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/* #define BSD4_3 */
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/* #define BSD_SYSTEM */
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/* #define VMS */
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#ifndef MSDOS
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#define MSDOS
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#endif
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#ifdef __GO32__
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#ifndef __DJGPP__
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#define __DJGPP__ 1 /* V2 defines __DJGPP__ == 2 */
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#endif
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#else
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You lose; /* Emacs for DOS must be compiled with DJGPP */
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#endif
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#define DOS_NT /* MSDOS or WINDOWSNT */
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#undef BSD_SYSTEM
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#undef VMS
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/* SYSTEM_TYPE should indicate the kind of system you are using.
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It sets the Lisp variable system-type. */
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#define SYSTEM_TYPE "ms-dos"
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#define SYMS_SYSTEM syms_of_dosfns();syms_of_msdos();syms_of_win16select()
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/* NOMULTIPLEJOBS should be defined if your system's shell
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does not have "job control" (the ability to stop a program,
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run some other program, then continue the first one). */
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#define NOMULTIPLEJOBS
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/* Emacs can read input using SIGIO and buffering characters itself,
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or using CBREAK mode and making C-g cause SIGINT.
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The choice is controlled by the variable interrupt_input.
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Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
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SIGIO can be used only on systems that implement it (4.2 and 4.3).
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CBREAK mode has two disadvantages
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1) At least in 4.2, it is impossible to handle the Meta key properly.
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I hear that in system V this problem does not exist.
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2) Control-G causes output to be discarded.
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I do not know whether this can be fixed in system V.
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Another method of doing input is planned but not implemented.
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It would have Emacs fork off a separate process
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to read the input and send it to the true Emacs process
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through a pipe.
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*/
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/* #define INTERRUPT_INPUT */
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/* Letter to use in finding device name of first pty,
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if system supports pty's. 'a' means it is /dev/ptya0 */
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/* #define FIRST_PTY_LETTER 'a' */
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/*
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* Define HAVE_PTYS if the system supports pty devices.
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*/
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/* #define HAVE_PTYS */
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/*
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* Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate
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* The 4.2 opendir, etc., library functions.
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*/
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/* #define NONSYSTEM_DIR_LIBRARY */
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#define SYSV_SYSTEM_DIR
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/* Define this symbol if your system has the functions bcopy, etc. */
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#define BSTRING
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/* Define this is the compiler understands `volatile'. */
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#define HAVE_VOLATILE
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/* subprocesses should be defined if you want to
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have code for asynchronous subprocesses
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(as used in M-x compile and M-x shell).
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This is generally OS dependent, and not supported
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under most USG systems. */
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#undef subprocesses
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/* If your system uses COFF (Common Object File Format) then define the
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preprocessor symbol "COFF". */
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#define COFF
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/* define MAIL_USE_FLOCK if the mailer uses flock
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to interlock access to /usr/spool/mail/$USER.
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The alternative is that a lock file named
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/usr/spool/mail/$USER.lock. */
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/* #define MAIL_USE_FLOCK */
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/* Define CLASH_DETECTION if you want lock files to be written
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so that Emacs can tell instantly when you try to modify
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a file that someone else has modified in his Emacs. */
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/* #define CLASH_DETECTION */
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/* Here, on a separate page, add any special hacks needed
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to make Emacs work on this system. For example,
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you might define certain system call names that don't
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exist on your system, or that do different things on
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your system and must be used only through an encapsulation
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(Which you should place, by convention, in sysdep.c). */
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/* Avoid incompatibilities between gmalloc.c and system header files
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in how to declare valloc. */
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#define GMALLOC_INHIBIT_VALLOC
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/* setjmp and longjmp can safely replace _setjmp and _longjmp,
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but they will run slower. */
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#define _setjmp setjmp
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#define _longjmp longjmp
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#if __DJGPP__ < 2
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#define NO_MODE_T
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/* New chdir () routine.
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DJGPP v2.0 and later doesn't need it because its chdir() does
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set the drive itself. */
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#ifdef chdir
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#undef chdir
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#endif
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#define chdir sys_chdir
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#define LIBS_SYSTEM -lpc /* isn't required in DJGPP v2.0, either */
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#endif /* __DJGPP__ < 2 */
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#if __DJGPP__ > 1
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#define DATA_START (&etext + 1)
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#define TEXT_START &start
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#define TEXT_END &etext
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#define _NAIVE_DOS_REGS
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#else /* not __DJGPP__ > 1 */
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/* This somehow needs to be defined even though we use COFF. */
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#define TEXT_START -1
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#endif /* not __DJGPP__ > 1 */
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#define ORDINARY_LINK
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/* command.com does not understand `...` so we define this. */
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#define LIB_GCC -Lgcc
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#define DONT_NEED_ENVIRON
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#define SEPCHAR ';'
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#define NULL_DEVICE "nul"
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#define EXEC_SUFFIXES ".exe:.com:.bat:"
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#if __DJGPP__ < 2
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#define O_RDONLY 0x0001
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#define O_WRONLY 0x0002
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#define O_RDWR 0x0004
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#define O_CREAT 0x0100
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#define O_TRUNC 0x0200
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#define O_EXCL 0x0400
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#define O_APPEND 0x0800
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#define O_TEXT 0x4000
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#define O_BINARY 0x8000
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#define NO_MATHERR
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#endif
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#define HAVE_INVERSE_HYPERBOLIC
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#define FLOAT_CHECK_DOMAIN
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/* When $TERM is "internal" then this is substituted: */
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#define INTERNAL_TERMINAL "pc|bios|IBM PC with colour display:\
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:co#80:li#25:Co#16:pa#256:km:ms:cm=<CM>:cl=<CL>:ce=<CE>:\
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:se=</SO>:so=<SO>:us=<UL>:ue=</UL>:md=<BD>:mh=<DIM>:mb=<BL>:mr=<RV>:me=<NV>:\
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:AB=<BG %d>:AF=<FG %d>:op=<DefC>:"
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/* Define this to a function (Fdowncase, Fupcase) if your file system
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likes that */
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#define FILE_SYSTEM_CASE Fmsdos_downcase_filename
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/* Define this to be the separator between devices and paths */
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#define DEVICE_SEP ':'
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/* We'll support either convention on MSDOG. */
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#define IS_DIRECTORY_SEP(_c_) ((_c_) == '/' || (_c_) == '\\')
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#define IS_ANY_SEP(_c_) (IS_DIRECTORY_SEP (_c_) || IS_DEVICE_SEP (_c_))
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/* Call init_gettimeofday when TZ changes. */
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#if __DJGPP__ < 2
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#define LOCALTIME_CACHE
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#define tzset init_gettimeofday
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#endif
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/* bcopy under djgpp is quite safe */
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#define GAP_USE_BCOPY
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#define BCOPY_UPWARD_SAFE 1
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#define BCOPY_DOWNWARD_SAFE 1
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/* Mode line description of a buffer's type. */
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#define MODE_LINE_BINARY_TEXT(buf) (NILP(buf->buffer_file_type) ? "T" : "B")
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/* Do we have POSIX signals? */
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#if __DJGPP__ > 1
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#define POSIX_SIGNALS
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#endif
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/* We have (the code to control) a mouse. */
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#define HAVE_MOUSE
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/* We canuse mouse menus. */
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#define HAVE_MENUS
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/* We have support for faces. */
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#define HAVE_FACES
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/* Define one of these for easier conditionals. */
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#ifdef HAVE_X_WINDOWS
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/* We need a little extra space, see ../../lisp/loadup.el */
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#define SYSTEM_PURESIZE_EXTRA 15000
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#define HAVE_X11R5
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#define LIBX11_SYSTEM -lxext -lsys
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#else
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/* We need a little extra space, see ../../lisp/loadup.el */
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#define SYSTEM_PURESIZE_EXTRA 60000
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#endif
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/* Tell the garbage collector that setjmp is known to save all
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registers relevant for conservative garbage collection in the
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jmp_buf. */
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#define GC_SETJMP_WORKS 1
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#define GC_MARK_STACK GC_MAKE_GCPROS_NOOPS
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