1 GNU Emacs Installation Guide for the DJGPP (a.k.a. MS-DOS) port
3 Copyright (C) 1992, 1994, 1996, 1997, 2000, 2001, 2002, 2003, 2004,
4 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
5 See the end of the file for license conditions.
7 The DJGPP port of GNU Emacs builds and runs on plain DOS and also on
8 all versions of MS-Windows from version 3.X on, including Windows XP
11 To build and install the DJGPP port, you need to have the DJGPP ports
12 of GCC (the GNU C compiler), GNU Make, rm, mv, and sed. See the
13 remarks in CONFIG.BAT for more information about locations and
14 versions. The Emacs FAQ (see info/efaq) includes pointers to Internet
15 sites where you can find the necessary utilities; search for "MS-DOS".
16 The configuration step (see below) will test for these utilities and
17 will refuse to continue if any of them isn't found.
19 Recompiling Lisp files in the `lisp' subdirectory using the various
20 targets in the lisp/Makefile file requires additional utilities:
21 `find' (from Findutils), GNU `echo' and `test' (from Sh-utils), and a
22 port of Bash. However, you should not normally need to run
23 lisp/Makefile, as all the Lisp files are distributed in byte-compiled
26 If you are building the DJGPP version of Emacs on a DOS-like system
27 which supports long file names (e.g. Windows 9X or Windows XP), you
28 need to make sure that long file names are handled consistently both
29 when you unpack the distribution and compile it. If you intend to
30 compile with DJGPP v2.0 or later, and long file names support is
31 enabled (LFN=y in the environment), you need to unpack Emacs
32 distribution in a way that doesn't truncate the original long
33 filenames to the DOS 8.3 namespace; the easiest way to do this is to
34 use djtar program which comes with DJGPP, since it will note the LFN
35 setting and behave accordingly. You can build Emacs with LFN=n, if
36 some of your tools don't support long file names: just ensure that LFN
37 is set to `n' during both unpacking and compiling.
39 (By the time you read this, you have already unpacked the Emacs
40 distribution, but if the explanations above imply that you should have
41 done it differently, it's safer to delete the directory tree created
42 by the unpacking program and unpack Emacs again, than to risk running
43 into problems during the build process.)
45 It is important to understand that the runtime support of long file
46 names by the Emacs binary is NOT affected by the LFN setting during
47 compilation; Emacs compiled with DJGPP v2.0 or later will always
48 support long file names on Windows no matter what was the setting
49 of LFN at compile time. However, if you compiled with LFN disabled
50 and want to enable LFN support after Emacs was already built, you need
51 to make sure that the support files in the lisp, etc and info
52 directories are called by their original long names as found in the
53 distribution. You can do this either by renaming the files manually,
54 or by extracting them from the original distribution archive with
55 djtar after you set LFN=y in the environment.
57 To unpack Emacs with djtar, type this command:
61 (This assumes that the Emacs distribution is called `emacs.tgz' on
64 If you want to print international characters, install the intlfonts
65 distribution. For this, create a directory called `fonts' under the
66 Emacs top-level directory (usually called `emacs-XX.YY') created by
67 unpacking emacs.tgz, chdir into the directory emacs-XX.YY/fonts, and
70 djtar -x intlfonts.tgz
72 When unpacking Emacs is done, a directory called `emacs-XX.YY' will be
73 created, where XX.YY is the Emacs version. To build and install
74 Emacs, chdir to that directory and type these commands:
79 Running "config msdos" checks for several programs that are required
80 to configure and build Emacs; if one of those programs is not found,
81 CONFIG.BAT stops and prints an error message. If you have DJGPP
82 version 2.0 or 2.01, it will complain about a program called
83 DJECHO.EXE. These old versions of DJGPP shipped that program under
84 the name ECHO.EXE, so you can simply copy ECHO.EXE to DJECHO.EXE and
85 rerun CONFIG.BAT. If you have neither ECHO.EXE nor DJECHO.EXE, you
86 should be able to find them in your djdevNNN.zip archive (where NNN is
87 the DJGPP version number).
89 On Windows NT, Windows 2000/XP/Vista, running "config msdos" might
90 print an error message like "VDM has been already loaded". This is
91 because those systems have a program called `redir.exe' which is
92 incompatible with a program by the same name supplied with DJGPP,
93 which is used by config.bat. To resolve this, move the DJGPP's `bin'
94 subdirectory to the front of your PATH environment variable.
96 To install the international fonts, chdir to the intlfonts-X.Y
97 directory created when you unpacked the intlfonts distribution (X.Y is
98 the version number of the fonts' distribution), and type the following
101 make bdf INSTALLDIR=..
103 After Make finishes, you may remove the directory intlfonts-X.Y; the
104 fonts are installed into the fonts/bdf subdirectory of the top-level
105 Emacs directory, and that is where Emacs will look for them by
108 Building Emacs creates executable files in the src and lib-src
109 directories. Installing the DJGPP port of Emacs moves these
110 executables to a sibling directory called bin. For example, if you
111 build in directory C:/emacs, installing moves the executables from
112 C:/emacs/src and C:/emacs/lib-src to the directory C:/emacs/bin, so
113 you can then delete the subdirectories C:/emacs/src and
114 C:/emacs/lib-src if you wish. The only subdirectories you need to
115 keep are bin, lisp, etc and info. (If you installed intlfonts, keep
116 the fonts directory and all its subdirectories as well.) The bin
117 subdirectory should be added to your PATH. The msdos subdirectory
118 includes a PIF and an icon file for Emacs which you might find useful
119 if you run Emacs under MS Windows.
121 Emacs on MSDOS finds the lisp, etc and info directories by looking in
122 ../lisp, ../etc and ../info, starting from the directory where the
123 Emacs executable was run from. You can override this by setting the
124 environment variables EMACSDATA (for the location of `etc' directory),
125 EMACSLOADPATH (for the location of `lisp' directory) and INFOPATH (for
126 the location of the `info' directory).
128 Emacs features which require asynchronous subprocesses that depend on
129 multitasking do not work in the DJGPP port. Synchronous subprocesses
130 do work, so features such as compilation and grep run synchronously,
131 unlike opn other platforms.
133 Version 2.0 of djgpp has two bugs that affect Emacs. We've included
134 corrected versions of two files from djgpp in the msdos subdirectory:
135 is_exec.c and sigaction.c. To work around the bugs, compile these
136 files and link them into temacs. Djgpp versions 2.01 and later have
137 these bugs fixed, so upgrade if you can before building Emacs.
140 This file is part of GNU Emacs.
142 GNU Emacs is free software: you can redistribute it and/or modify
143 it under the terms of the GNU General Public License as published by
144 the Free Software Foundation, either version 3 of the License, or
145 (at your option) any later version.
147 GNU Emacs is distributed in the hope that it will be useful,
148 but WITHOUT ANY WARRANTY; without even the implied warranty of
149 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
150 GNU General Public License for more details.
152 You should have received a copy of the GNU General Public License
153 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.