1: Gforth is a fast and portable implementation of the ANS Forth
2: language. It works nicely with the Emacs editor, offers some nice
3: features such as input completion and history, backtraces, a
4: decompiler and a powerful locals facility, and it even has a
5: manual. Gforth combines traditional implementation techniques with
6: newer techniques for portability and performance: its inner
7: interpreter is direct threaded with several optimizations, but you can
8: also use a traditional-style indirect threaded interpreter. Gforth is
9: distributed under the GNU General Public license (see COPYING).
11: Gforth runs under GNU, BSD, and similar systems, MS Windows, MacOS X,
12: OS/2, and DOS and should not be hard to port to other systems
13: supported by GCC. This version has been tested successfully on the
14: following platforms:
20: Read INSTALL for installation instructions from source, or INSTALL.DOS
21: for DOS, Windows, and OS/2 from source, or INSTALL.BINDIST if you have
22: a binary package distributed as .tar.gz or .zip file. If you received
23: a self-installing executable, just run it and follow the instructions.
25: To start the system, just say `gforth' (after installing it).
27: You can find new versions of Gforth at ftp://ftp.gnu.org/gnu/gforth/
28: and its mirrors or at
34: The latter site also contains binary distributions of Gforth for some
35: popular platforms.
37: If you want to work on Gforth, mail me. Tasks to be done can be found
38: in ToDo; but if you would like to do something not mentioned there,
39: it's ok, too. In any case, we would like to hear what you are
40: doing. The most important tasks IMO are the missing ANS Forth words,
41: the documentation and the foreign language interface for C.
43: On popular request, here are the meanings of unusual file extensions:
45: *.fs Forth stream source file (include with "include <file>" from within
46: gforth, or start with "gforth <file1> <file2> ...")
47: *.fi Forth image files (start with "gforth -i <image file>")
48: *.fb Forth blocks file (load with "use <block file> 1 load")
49: *.i C include files
50: *.ds documenation source
51: *TAGS etags files
53: A number of Forth source files are included in this package that are
54: not necessary for building Gforth. Not all of them are mentioned in
55: the rest of the documentation, so here's a short overview:
58: code.fs random.fs more.fs ansi.fs colorize.fs
59: oof.fs oofsampl.fs objects.fs blocked.fb tasker.fs
62: ans-report.fs etags.fs glosgen.fs filedump.fs
65: tt.fs sokoban.fs
67: Test programs (for testing Forth systems):
71: bubble.fs siev.fs matrix.fs fib.fs
73: ANS Forth implementations of Gforth extensions:
74: compat/*.fs other.fs
76: For discussions about Gforth, use the Usenet newsgroup
77: comp.lang.forth. If you prefer not to post on Usenet, there is also a
78: mailing list: GForth@ChaosSolutions.org. To subscribe, send a mail to
79: firstname.lastname@example.org with:
81: subscribe GForth
83: as the first and only line within the message body. Submit bug
84: reports through
88: (whether you post them or not).
90: - anton
94: Copyright (C) 1995,1996,1997,1998,2000,2003,2004,2006,2007 Free Software Foundation, Inc.
96: This file is part of Gforth.
98: Gforth is free software; you can redistribute it and/or
99: modify it under the terms of the GNU General Public License
100: as published by the Free Software Foundation, either version 3
101: of the License, or (at your option) any later version.
103: This program is distributed in the hope that it will be useful,
104: but WITHOUT ANY WARRANTY; without even the implied warranty of
105: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.#See the
106: GNU General Public License for more details.
108: You should have received a copy of the GNU General Public License
109: along with this program. If not, see http://www.gnu.org/licenses/.