This is GD 2.x packaged for Debian GNU systems.

Upstream source: http://www.boutell.com/gd/http/

Upstream author: Thomas Boutell <boutell@boutell.com>

Copyright and licensing info, main source:

    Portions copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 by
    Cold Spring Harbor Laboratory. Funded under Grant P41-RR02188 by the
    National Institutes of Health.
   
    Portions copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002 by Boutell.Com,
    Inc.
   
    Portions relating to GD2 format copyright 1999, 2000, 2001, 2002 Philip
    Warner.
   
    Portions relating to PNG copyright 1999, 2000, 2001, 2002 Greg Roelofs.
   
    Portions relating to libttf copyright 1999, 2000, 2001, 2002 John Ellson
    (ellson@lucent.com).
   
    Portions relating to JPEG and to color quantization copyright 2000, 2001,
    2002, Doug Becker and copyright (C) 1994, 1995, 1996, 1997, 1998, 1999,
    2000, 2001, 2002, Thomas G. Lane. This software is based in part on the
    work of the Independent JPEG Group. See the file README-JPEG.TXT for more
    information.
   
    Portions relating to WBMP copyright 2000, 2001, 2002 Maurice Szmurlo and
    Johan Van den Brande.
   
    Permission has been granted to copy, distribute and modify gd in any
    context without fee, including a commercial application, provided that this
    notice is present in user-accessible supporting documentation.
   
    This does not affect your ownership of the derived work itself, and the
    intent is to assure proper credit for the authors of gd, not to interfere
    with your productive use of gd. If you have questions, ask. "Derived works"
    includes all programs that utilize the library. Credit must be given in
    user-accessible documentation.
   
    This software is provided "AS IS." The copyright holders disclaim all
    warranties, either express or implied, including but not limited to implied
    warranties of merchantability and fitness for a particular purpose, with
    respect to this code and accompanying documentation.
   
    Although their code does not appear in gd 2.0.2, the authors wish to thank
    David Koblas, David Rowley, and Hutchison Avenue Software Corporation for
    their prior contributions.

Copyright and licensing info, gd_gif_out.c:

/* Code drawn from ppmtogif.c, from the pbmplus package
**
** Based on GIFENCOD by David Rowley <mgardi@watdscu.waterloo.edu>. A
** Lempel-Zim compression based on "compress".
**
** Modified by Marcel Wijkstra <wijkstra@fwi.uva.nl>
**
** Copyright (C) 1989 by Jef Poskanzer.
**
** Permission to use, copy, modify, and distribute this software and its
** documentation for any purpose and without fee is hereby granted, provided
** that the above copyright notice appear in all copies and that both that
** copyright notice and this permission notice appear in supporting
** documentation.  This software is provided "as is" without express or
** implied warranty.
**
** The Graphics Interchange Format(c) is the Copyright property of
** CompuServe Incorporated.  GIF(sm) is a Service Mark property of
** CompuServe Incorporated.
*/
