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The Unix configuration script "configure" was
produced with GNU Autoconf.
It is copyright by the Free Software Foundation but is
freely distributable.
The same holds for its supporting scripts
(config.guess, config.sub,
ltconfig, ltmain.sh). Another support script, install-sh,
is copyright
by M.I.T. but is also freely distributable.
It appears that the arithmetic coding option of the
JPEG spec is covered by
patents owned by IBM, AT&T, and Mitsubishi. Hence
arithmetic coding cannot
legally be used without obtaining one or more
licenses. For this reason,
support for arithmetic coding has been removed from
the free JPEG software.
(Since arithmetic coding provides only a marginal gain
over the unpatented
Huffman mode, it is unlikely that very many
implementations will support it.)
So far as we are aware, there are no patent
restrictions on the remaining
The IJG distribution formerly included code to read
and write GIF files.
To avoid entanglement with the Unisys LZW patent,
GIF reading support has
been removed altogether, and the GIF writer has
been simplified to produce
"uncompressed GIFs". This technique does not use
the LZW algorithm; the
resulting GIF files are larger than usual, but are
readable by all standard
GIF decoders.
We are required to state that
"The Graphics Interchange Format(c) is the
Copyright property of
CompuServe Incorporated. GIF(sm) is a Service
Mark property of
CompuServe Incorporated."
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Public License.
libjpeg-turbo
URL:
http://sourceforge.net/projects/libjpeg-turbo/
libjpeg-turbo is licensed under a non-restrictive, BSD-
style license
(see README.) The TurboJPEG/OSS wrapper (both
C and Java versions) and
associated test programs bear a similar license, which
is reproduced below:
Redistribution and use in source and binary forms,
with or without
modification, are permitted provided that the
following conditions are met:
- Redistributions of source code must retain the
above copyright notice,
this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the
above copyright notice,
this list of conditions and the following disclaimer in
the documentation
and/or other materials provided with the
distribution.
- Neither the name of the libjpeg-turbo Project nor
the names of its
contributors may be used to endorse or promote
products derived from this
software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT
HOLDERS AND CONTRIBUTORS "AS IS",
AND ANY EXPRESS OR IMPLIED WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE
COPYRIGHT HOLDERS OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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