1 Copyright (C) 2001-2015 Free Software Foundation, Inc.
2 See the end of the file for license conditions.
5 This directory contains scripts for building the DJGPP (a.k.a. MS-DOS)
6 version of Emacs, and other files useful for running that version of
9 The files emacs.ico and emacs.pif are for using the DJGPP version on
10 Windows 3.X. Since these are binary files, their copyright notice is
13 # Copyright (C) 1993, 2002-2015 Free Software Foundation, Inc.
15 # This file is part of GNU Emacs.
17 # This file is free software; as a special exception, the author gives
18 # unlimited permission to copy and/or distribute it, with or without
19 # modifications, as long as this notice is preserved.
21 # This program is distributed in the hope that it will be useful,
22 # but WITHOUT ANY WARRANTY; without even the implied warranty of
23 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
25 # ----------------------------------------------------------------------
28 NOTE ON THE LEGAL STATUS OF THE FILES IS_EXEC.C, SIGACTION.C
30 As distributed with GNU Emacs, the files is_exec.c and sigaction.c are
31 Copyright (C) 1995 DJ Delorie, and are licensed under the terms of the
32 GNU General Public License version 3 (see COPYING), or (at your
33 option) any later version.
35 Here we record the details of the legal history of these files.
37 The files is_exec.c and sigaction.c were originally part of DJGPP,
38 distributed by DJ Delorie. The versions of these files in DJGPP
39 contain the following license notice:
41 Copyright (C) 1995 DJ Delorie, see COPYING.DJ for details
43 The contents of the file COPYING.DJ (as available at, for example, the
44 URL: <http://www.delorie.com/bin/cvsweb.cgi/djgpp/copying.dj>) are as
47 -- COPYING.DJ STARTS HERE --
49 This is the file "COPYING.DJ". It does NOT apply to any sources or
50 binaries copyrighted by UCB Berkeley, the Free Software Foundation, or
51 any other agency besides DJ Delorie and others who have agreed to
52 allow their sources to be distributed under these terms.
54 Copyright Information for sources and executables that are marked
55 Copyright (C) DJ Delorie
57 Deerfield NH 03037-1110
59 This document is Copyright (C) DJ Delorie and may be distributed
60 verbatim, but changing it is not allowed.
62 Source code copyright DJ Delorie is distributed under the terms of the
63 GNU General Public License, with the following exceptions:
65 * Sources used to build crt0.o, gcrt0.o, libc.a, libdbg.a, and
66 libemu.a are distributed under the terms of the GNU Library General
67 Public License, rather than the GNU GPL.
69 * Any existing copyright or authorship information in any given source
70 file must remain intact. If you modify a source file, a notice to that
71 effect must be added to the authorship information in the source file.
73 * Runtime binaries, as provided by DJ in DJGPP, may be distributed
74 without sources ONLY if the recipient is given sufficient information
75 to obtain a copy of djgpp themselves. This primarily applies to
76 go32-v2.exe, emu387.dxe, and stubedit.exe.
78 * Runtime objects and libraries, as provided by DJ in DJGPP, when
79 linked into an application, may be distributed without sources ONLY
80 if the recipient is given sufficient information to obtain a copy of
81 djgpp themselves. This primarily applies to crt0.o and libc.a.
85 Changes to source code copyright BSD, FSF, or others, by DJ Delorie
86 fall under the terms of the original copyright. Such files usually
87 have multiple copyright notices in them.
89 A copy of the files "COPYING" and "COPYING.LIB" are included with this
90 document. If you did not receive a copy of these files, you may
91 obtain one from whence this document was obtained, or by writing:
93 Free Software Foundation, Inc.
96 Boston, MA 02110-1301,
99 -- COPYING.DJ ENDS HERE --
101 Both is_exec.c and sigaction.c are parts of DJGPP's libc.a, therefore
102 according to exception 1 in the above terms their "base" license is
103 the GNU Library General Public License [now known as the GNU Lesser
104 General Public License].
106 The terms of the GNU LGPL, specifically clause 3, which begins:
108 3. You may opt to apply the terms of the ordinary GNU General
109 Public License instead of this License to a given copy of the
112 permit us to relicense the files is_exec.c and sigaction.c as used in
113 GNU Emacs under the terms of the GNU GPL.
115 COPYING.DJ, however, lists extra exceptions 2-4 to the GNU licenses.
116 Items 3 and 4 are not relevant in the case of GNU Emacs, since they
117 can only apply to copies of DJGPP [confirmed by email from DJ Delorie
118 to rms at gnu.org and others, 2007/01/31].
120 Exception 2 of COPYING.DJ, when viewed as an added restriction, rather
121 than as an interpretation of the GPL, leads to problems. The added
122 requirement makes the overall license of the file incompatible with
125 As a solution to this problem, DJ Delorie has kindly granted (February
126 2007) GNU Emacs an exception, and permits us to license the files
127 is_exec.c and sigaction.c solely under the terms of the GNU GPL. This
128 exception applies _only_ to these files as distributed with GNU Emacs.
129 This solution was arrived at in an email discussion between DJ Delorie
130 <dj at delorie.com> and Richard Stallman <rms at gnu.org> in
131 January/February 2007. We record below a summary of the relevant final
132 email in this discussion:
134 From: DJ Delorie <dj at delorie.com>
136 Subject: Re: COPYING.DJ and Emacsn
138 I have no problem with whatever you wish to do with those files in
139 emacs (as long as djgpp itself doesn't need to change).
142 Accordingly, in February 2007 we relicensed the files is_exec.c and
143 sigaction.c as used in GNU Emacs under the GNU GPL.
145 Copies of both the GNU General Public License and GNU Lesser (Library)
146 Public License may be obtained from <http://www.gnu.org/licenses/>, or:
147 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
148 Boston, MA 02110-1301, USA.
151 This file is part of GNU Emacs.
153 GNU Emacs is free software: you can redistribute it and/or modify
154 it under the terms of the GNU General Public License as published by
155 the Free Software Foundation, either version 3 of the License, or
156 (at your option) any later version.
158 GNU Emacs is distributed in the hope that it will be useful,
159 but WITHOUT ANY WARRANTY; without even the implied warranty of
160 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
161 GNU General Public License for more details.
163 You should have received a copy of the GNU General Public License
164 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.