1/* System description file for MS-DOS 2 3 Copyright (C) 1993, 1996, 1997, 2001, 2002, 2003, 2004, 4 2005, 2006, 2007 Free Software Foundation, Inc. 5 6This file is part of GNU Emacs. 7 8GNU Emacs is free software; you can redistribute it and/or modify 9it under the terms of the GNU General Public License as published by 10the Free Software Foundation; either version 2, or (at your option) 11any later version. 12 13GNU Emacs is distributed in the hope that it will be useful, 14but WITHOUT ANY WARRANTY; without even the implied warranty of 15MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16GNU General Public License for more details. 17 18You should have received a copy of the GNU General Public License 19along with GNU Emacs; see the file COPYING. If not, write to 20the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 21Boston, MA 02110-1301, USA. */ 22 23/* Note: lots of stuff here was taken from s-msdos.h in demacs. */ 24 25 26/* 27 * Define symbols to identify the version of Unix this is. 28 * Define all the symbols that apply correctly. 29 */ 30 31/* #define UNIPLUS */ 32/* #define USG5 */ 33/* #define USG */ 34/* #define HPUX */ 35/* #define UMAX */ 36/* #define BSD4_1 */ 37/* #define BSD4_2 */ 38/* #define BSD4_3 */ 39/* #define BSD_SYSTEM */ 40/* #define VMS */ 41#ifndef MSDOS 42#define MSDOS 43#endif 44 45#ifdef __GO32__ 46#ifndef __DJGPP__ 47#define __DJGPP__ 1 /* V2 defines __DJGPP__ == 2 */ 48#endif 49#else 50You lose; /* Emacs for DOS must be compiled with DJGPP */ 51#endif 52 53#define DOS_NT /* MSDOS or WINDOWSNT */ 54#undef BSD_SYSTEM 55#undef VMS 56 57/* SYSTEM_TYPE should indicate the kind of system you are using. 58 It sets the Lisp variable system-type. */ 59 60#define SYSTEM_TYPE "ms-dos" 61 62#define SYMS_SYSTEM syms_of_dosfns();syms_of_msdos();syms_of_win16select() 63 64/* NOMULTIPLEJOBS should be defined if your system's shell 65 does not have "job control" (the ability to stop a program, 66 run some other program, then continue the first one). */ 67 68#define NOMULTIPLEJOBS 69 70/* Emacs can read input using SIGIO and buffering characters itself, 71 or using CBREAK mode and making C-g cause SIGINT. 72 The choice is controlled by the variable interrupt_input. 73 Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO) 74 75 SIGIO can be used only on systems that implement it (4.2 and 4.3). 76 CBREAK mode has two disadvantages 77 1) At least in 4.2, it is impossible to handle the Meta key properly. 78 I hear that in system V this problem does not exist. 79 2) Control-G causes output to be discarded. 80 I do not know whether this can be fixed in system V. 81 82 Another method of doing input is planned but not implemented. 83 It would have Emacs fork off a separate process 84 to read the input and send it to the true Emacs process 85 through a pipe. 86*/ 87 88/* #define INTERRUPT_INPUT */ 89 90/* Letter to use in finding device name of first pty, 91 if system supports pty's. 'a' means it is /dev/ptya0 */ 92 93/* #define FIRST_PTY_LETTER 'a' */ 94 95/* 96 * Define HAVE_PTYS if the system supports pty devices. 97 */ 98 99/* #define HAVE_PTYS */ 100 101/* 102 * Define NONSYSTEM_DIR_LIBRARY to make Emacs emulate 103 * The 4.2 opendir, etc., library functions. 104 */ 105 106/* #define NONSYSTEM_DIR_LIBRARY */ 107 108#define SYSV_SYSTEM_DIR 109 110/* Define this symbol if your system has the functions bcopy, etc. */ 111 112#define BSTRING 113 114/* Define this is the compiler understands `volatile'. */ 115#define HAVE_VOLATILE 116 117 118/* subprocesses should be defined if you want to 119 have code for asynchronous subprocesses 120 (as used in M-x compile and M-x shell). 121 This is generally OS dependent, and not supported 122 under most USG systems. */ 123 124#undef subprocesses 125 126/* If your system uses COFF (Common Object File Format) then define the 127 preprocessor symbol "COFF". */ 128 129#define COFF 130 131/* define MAIL_USE_FLOCK if the mailer uses flock 132 to interlock access to /usr/spool/mail/$USER. 133 The alternative is that a lock file named 134 /usr/spool/mail/$USER.lock. */ 135 136/* #define MAIL_USE_FLOCK */ 137 138/* Define CLASH_DETECTION if you want lock files to be written 139 so that Emacs can tell instantly when you try to modify 140 a file that someone else has modified in his Emacs. */ 141 142/* #define CLASH_DETECTION */ 143 144/* Here, on a separate page, add any special hacks needed 145 to make Emacs work on this system. For example, 146 you might define certain system call names that don't 147 exist on your system, or that do different things on 148 your system and must be used only through an encapsulation 149 (Which you should place, by convention, in sysdep.c). */ 150 151/* Avoid incompatibilities between gmalloc.c and system header files 152 in how to declare valloc. */ 153#define GMALLOC_INHIBIT_VALLOC 154 155/* setjmp and longjmp can safely replace _setjmp and _longjmp, 156 but they will run slower. */ 157 158#define _setjmp setjmp 159#define _longjmp longjmp 160 161#if __DJGPP__ < 2 162 163#define NO_MODE_T 164 165/* New chdir () routine. 166 DJGPP v2.0 and later doesn't need it because its chdir() does 167 set the drive itself. */ 168#ifdef chdir 169#undef chdir 170#endif 171#define chdir sys_chdir 172 173#define LIBS_SYSTEM -lpc /* isn't required in DJGPP v2.0, either */ 174 175#endif /* __DJGPP__ < 2 */ 176 177#if __DJGPP__ > 1 178 179#define DATA_START (&etext + 1) 180#define TEXT_START &start 181#define TEXT_END &etext 182 183#define _NAIVE_DOS_REGS 184 185#else /* not __DJGPP__ > 1 */ 186 187/* This somehow needs to be defined even though we use COFF. */ 188#define TEXT_START -1 189 190#endif /* not __DJGPP__ > 1 */ 191 192#define ORDINARY_LINK 193 194/* command.com does not understand `...` so we define this. */ 195#define LIB_GCC -Lgcc 196#define DONT_NEED_ENVIRON 197#define SEPCHAR ';' 198 199#define NULL_DEVICE "nul" 200 201#if __DJGPP__ < 2 202#define O_RDONLY 0x0001 203#define O_WRONLY 0x0002 204#define O_RDWR 0x0004 205#define O_CREAT 0x0100 206#define O_TRUNC 0x0200 207#define O_EXCL 0x0400 208#define O_APPEND 0x0800 209#define O_TEXT 0x4000 210#define O_BINARY 0x8000 211#define NO_MATHERR 212#endif 213 214#define HAVE_INVERSE_HYPERBOLIC 215#define FLOAT_CHECK_DOMAIN 216 217/* When $TERM is "internal" then this is substituted: */ 218#define INTERNAL_TERMINAL "pc|bios|IBM PC with colour display:\ 219:co#80:li#25:Co#16:pa#256:km:ms:cm=<CM>:cl=<CL>:ce=<CE>:\ 220:se=</SO>:so=<SO>:us=<UL>:ue=</UL>:md=<BD>:mh=<DIM>:mb=<BL>:mr=<RV>:me=<NV>:\ 221:AB=<BG %d>:AF=<FG %d>:op=<DefC>:" 222 223/* Define this to a function (Fdowncase, Fupcase) if your file system 224 likes that */ 225#define FILE_SYSTEM_CASE Fmsdos_downcase_filename 226 227/* Define this to be the separator between devices and paths */ 228#define DEVICE_SEP ':' 229 230/* We'll support either convention on MSDOG. */ 231#define IS_DIRECTORY_SEP(_c_) ((_c_) == '/' || (_c_) == '\\') 232#define IS_ANY_SEP(_c_) (IS_DIRECTORY_SEP (_c_) || IS_DEVICE_SEP (_c_)) 233 234/* Call init_gettimeofday when TZ changes. */ 235#if __DJGPP__ < 2 236#define LOCALTIME_CACHE 237#define tzset init_gettimeofday 238#endif 239 240/* bcopy under djgpp is quite safe */ 241#define GAP_USE_BCOPY 242#define BCOPY_UPWARD_SAFE 1 243#define BCOPY_DOWNWARD_SAFE 1 244 245/* Mode line description of a buffer's type. */ 246#define MODE_LINE_BINARY_TEXT(buf) (NILP(buf->buffer_file_type) ? "T" : "B") 247 248/* Do we have POSIX signals? */ 249#if __DJGPP__ > 1 250#define POSIX_SIGNALS 251#endif 252 253/* We have (the code to control) a mouse. */ 254#define HAVE_MOUSE 255 256/* We canuse mouse menus. */ 257#define HAVE_MENUS 258 259/* We have support for faces. */ 260#define HAVE_FACES 261 262/* Define one of these for easier conditionals. */ 263#ifdef HAVE_X_WINDOWS 264/* We need a little extra space, see ../../lisp/loadup.el */ 265#define SYSTEM_PURESIZE_EXTRA 15000 266#define HAVE_X11R5 267#define LIBX11_SYSTEM -lxext -lsys 268#else 269/* We need a little extra space, see ../../lisp/loadup.el */ 270#define SYSTEM_PURESIZE_EXTRA 50000 271#endif 272 273/* Tell the garbage collector that setjmp is known to save all 274 registers relevant for conservative garbage collection in the 275 jmp_buf. */ 276 277#define GC_SETJMP_WORKS 1 278#define GC_MARK_STACK GC_MAKE_GCPROS_NOOPS 279 280/* arch-tag: d184f860-815d-4ff4-8187-d05c0f3c37d0 281 (do not change this comment) */ 282