code.delx.au - gnu-emacs/blob - msdos/README

   1 Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
   2   Free Software Foundation, Inc.
   3 See the end of the file for license conditions.
   4
   5
   6 This directory contains scripts for building the DJGPP (a.k.a. MS-DOS)
   7 version of Emacs, and other files useful for running that version of
   8 Emacs.
   9
  10 The files emacs.ico and emacs.pif are for using the DJGPP version on
  11 Windows 3.X.  Since these are binary files, their copyright notice is
  12 reproduced here:
  13
  14 # Copyright (C) 1993, 2002, 2003, 2004, 2005,
  15 #   2006, 2007, 2008, 2009 Free Software Foundation, Inc.
  16 #
  17 # This file is part of GNU Emacs.
  18 #
  19 # This file is free software; as a special exception, the author gives
  20 # unlimited permission to copy and/or distribute it, with or without
  21 # modifications, as long as this notice is preserved.
  22 #
  23 # This program is distributed in the hope that it will be useful,
  24 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  25 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  26 #
  27 # ----------------------------------------------------------------------
  28
  29
  30 NOTE ON THE LEGAL STATUS OF THE FILES IS_EXEC.C, SIGACTION.C
  31
  32 As distributed with GNU Emacs, the files is_exec.c and sigaction.c are
  33 Copyright (C) 1995 DJ Delorie, and are licensed under the terms of the
  34 GNU General Public License version 3 (see COPYING), or (at your
  35 option) any later version.
  36
  37 Here we record the details of the legal history of these files.
  38
  39 The files is_exec.c and sigaction.c were originally part of DJGPP,
  40 distributed by DJ Delorie. The versions of these files in DJGPP
  41 contain the following license notice:
  42
  43   Copyright (C) 1995 DJ Delorie, see COPYING.DJ for details
  44
  45 The contents of the file COPYING.DJ (as available at, for example, the
  46 URL: <http://www.delorie.com/bin/cvsweb.cgi/djgpp/copying.dj>) are as
  47 follows:
  48
  49 -- COPYING.DJ STARTS HERE --
  50
  51 This is the file "COPYING.DJ".  It does NOT apply to any sources or
  52 binaries copyrighted by UCB Berkeley, the Free Software Foundation, or
  53 any other agency besides DJ Delorie and others who have agreed to
  54 allow their sources to be distributed under these terms.
  55
  56    Copyright Information for sources and executables that are marked
  57    Copyright (C) DJ Delorie
  58                  334 North Rd
  59                  Deerfield NH 03037-1110
  60
  61 This document is Copyright (C) DJ Delorie and may be distributed
  62 verbatim, but changing it is not allowed.
  63
  64 Source code copyright DJ Delorie is distributed under the terms of the
  65 GNU General Public Licence, with the following exceptions:
  66
  67 * Sources used to build crt0.o, gcrt0.o, libc.a, libdbg.a, and
  68   libemu.a are distributed under the terms of the GNU Library General
  69   Public License, rather than the GNU GPL.
  70
  71 * Any existing copyright or authorship information in any given source
  72   file must remain intact.  If you modify a source file, a notice to that
  73   effect must be added to the authorship information in the source file.
  74
  75 * Runtime binaries, as provided by DJ in DJGPP, may be distributed
  76   without sources ONLY if the recipient is given sufficient information
  77   to obtain a copy of djgpp themselves.  This primarily applies to
  78   go32-v2.exe, emu387.dxe, and stubedit.exe.
  79
  80 * Runtime objects and libraries, as provided by DJ in DJGPP, when
  81   linked into an application, may be distributed without sources ONLY
  82   if the recipient is given sufficient information to obtain a copy of
  83   djgpp themselves.  This primarily applies to crt0.o and libc.a.
  84
  85 -----
  86
  87 Changes to source code copyright BSD, FSF, or others, by DJ Delorie
  88 fall under the terms of the original copyright.  Such files usually
  89 have multiple copyright notices in them.
  90
  91 A copy of the files "COPYING" and "COPYING.LIB" are included with this
  92 document.  If you did not receive a copy of these files, you may
  93 obtain one from whence this document was obtained, or by writing:
  94
  95       Free Software Foundation, Inc.
  96       51 Franklin Street,
  97       Fifth Floor,
  98       Boston, MA 02110-1301,
  99       USA
 100
 101 -- COPYING.DJ ENDS HERE --
 102
 103 Both is_exec.c and sigaction.c are parts of DJGPP's libc.a, therefore
 104 according to exception 1 in the above terms their "base" license is
 105 the GNU Library General Public License [now known as the GNU Lesser
 106 General Public License].
 107
 108 The terms of the GNU LGPL, specifically clause 3, which begins:
 109
 110     3. You may opt to apply the terms of the ordinary GNU General
 111     Public License instead of this License to a given copy of the
 112     Library.
 113
 114 permit us to relicense the files is_exec.c and sigaction.c as used in
 115 GNU Emacs under the terms of the GNU GPL.
 116
 117 COPYING.DJ, however, lists extra exceptions 2-4 to the GNU licenses.
 118 Items 3 and 4 are not relevant in the case of GNU Emacs, since they
 119 can only apply to copies of DJGPP [confirmed by email from DJ Delorie
 120 to rms at gnu.org and others, 2007/01/31].
 121
 122 Exception 2 of COPYING.DJ, when viewed as an added restriction, rather
 123 than as an interpretation of the GPL, leads to problems. The added
 124 requirement makes the overall license of the file incompatible with
 125 the GNU GPL.
 126
 127 As a solution to this problem, DJ Delorie has kindly granted (February
 128 2007) GNU Emacs an exception, and permits us to license the files
 129 is_exec.c and sigaction.c solely under the terms of the GNU GPL. This
 130 exception applies _only_ to these files as distributed with GNU Emacs.
 131 This solution was arrived at in an email discussion between DJ Delorie
 132 <dj at delorie.com> and Richard Stallman <rms at gnu.org> in
 133 January/February 2007. We record below a summary of the relevant final
 134 email in this discussion:
 135
 136     From: DJ Delorie <dj at delorie.com>
 137     To: rms at gnu.org
 138     Subject: Re: COPYING.DJ and Emacsn
 139
 140     I have no problem with whatever you wish to do with those files in
 141     emacs (as long as djgpp itself doesn't need to change).
 142
 143
 144 Accordingly, in February 2007 we relicensed the files is_exec.c and
 145 sigaction.c as used in GNU Emacs under the GNU GPL.
 146
 147 Copies of both the GNU General Public License and GNU Lesser (Library)
 148 Public License may be obtained from <http://www.gnu.org/licenses/>, or:
 149 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 150 Boston, MA 02110-1301, USA.
 151
 152 \f
 153 This file is part of GNU Emacs.
 154
 155 GNU Emacs is free software: you can redistribute it and/or modify
 156 it under the terms of the GNU General Public License as published by
 157 the Free Software Foundation, either version 3 of the License, or
 158 (at your option) any later version.
 159
 160 GNU Emacs is distributed in the hope that it will be useful,
 161 but WITHOUT ANY WARRANTY; without even the implied warranty of
 162 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 163 GNU General Public License for more details.
 164
 165 You should have received a copy of the GNU General Public License
 166 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.