In addition to the general copyright for GAP set forth in the Copyright the following terms apply to GAP for MS-DOS.
The system dependent part for GAP for MS-DOS was written by Steve Linton. He assigns the copyright to the Lehrstuhl D fuer Mathematik. Many thanks to Steve Linton for his work.
The executable of GAP for MS-DOS that we distribute was compiled with
DJ Delorie's port of the Free Software Foundation's GNU C compiler
version 2.7.2. The compiler can be obtained by anonymous ftp from a
variety of general public FTP archives. Many thanks to the Free Software
Foundation and DJ Delorie for this amazing piece of work.
The GNU C compiler is
Copyright (C) 1989, 1991 Free Software Foundation, Inc. 675 Mass Ave, Cambridge, MA 02139, USA
under the terms of the GNU General Public License (GPL). Note that the GNU GPL states that the mere act of compiling does not affect the copyright status of GAP.
The modifications to the compiler to make it operating under MS-DOS, the
functions from the standard library libpc.a, the modifications of the
functions from the standard library libc.a to make them operate under
MS-DOS, and the DOS extender go32 (which is prepended to gapexe.386)
are
Copyright (C) 1991 DJ Delorie, 24 Kirsten Ave, Rochester NH 03867-2954, USA
also under the terms of the GNU GPL. The terms of the GPL require that
we make the source code for libpc.a available. They can be obtained by
writing to Steve Linton (however, it may be easier for you to ftp them
from grape.ecs.clarkson.edu yourself). They also require that GAP
falls under the GPL too, i.e., is distributed freely, which it basically
does anyhow.
The functions in libc.a that GAP for the 386 uses are
Copyright (c) 1988 Regents of the University of California
under the following terms
All rights reserved.
Redistribution and use in source and binary forms are permitted provided that the above copyright notice and this paragraph are duplicated in all such forms and that any documentation, advertising materials, and other materials related to such distribution and use acknowledge that the software was developed by the University of California, Berkeley. The name of the University may not be used to endorse or promote products derived from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED AS IS AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
GAP 3.4.4