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SHR-2040/2041/2042 USER’S MANUAL
10-19
English
License, version 2, hence the version
number 2.1.]
Preamble
The licenses for most software are
designed to take away your freedom to
share and change it. By contrast, the
GNU General Public Licenses are
intended to guarantee your freedom to
share and change free software--to
make sure the software is free for all its
users.
This license, the Lesser General Public
License, applies to some specially des-
ignated software packages--typically
libraries--of the Free Software
Foundation and other authors who
decide to use it. You can use it too, but
we suggest you first think carefully
about whether this license or the ordi-
nary General Public License is the bet-
ter strategy to use in any particular
case, based on the explanations below.
When we speak of free software, we
are referring to freedom of use, not
price. Our General Public Licenses are
designed to make sure that you have
the freedom to distribute copies of free
software (and charge for this service if
you wish); that you receive source
code or can get it if you want it; that
you can change the software and use
pieces of it in new free programs; and
that you are informed that you can do
these things.
To protect your rights, we need to
make restrictions that forbid distributors
to deny you these rights or to ask you
to surrender these rights. These restric-
tions translate to certain responsibilities
for you if you distribute copies of the
library or if you modify it.
For example, if you distribute copies of
the library, whether gratis or for a fee,
you must give the recipients all the
rights that we gave you. You must
make sure that they, too, receive or
can get the source code. If you link
other code with the library, you must
provide complete object files to the
recipients, so that they can relink them
with the library after making changes to
the library and recompiling it. And you
must show them these terms so they
know their rights.
We protect your rights with a two-step
method: (1) we copyright the library,
and (2) we offer you this license, which
gives you legal permission to copy, dis-
tribute and/or modify the library.
To protect each distributor, we want to
make it very clear that there is no war-
ranty for the free library. Also, if the
library is modified by someone else
and passed on, the recipients should
know that what they have is not the
original version, so that the original
author's reputation will not be affected
by problems that might be introduced
by others.
Finally, software patents pose a con-
stant threat to the existence of any free
program. We wish to make sure that a
company cannot effectively restrict the
users of a free program by obtaining a
restrictive license from a patent holder.
Therefore, we insist that any patent
license obtained for a version of the
library must be consistent with the full
freedom of use specified in this license.
Most GNU software, including some
libraries, is covered by the ordinary
GNU General Public License. This
license, the GNU Lesser General
Public License, applies to certain des-
ignated libraries, and is quite different
from the ordinary General Public
License. We use this license for certain
libraries in order to permit linking those
libraries into non-free programs.
When a program is linked with a library,
whether statically or using a shared
library, the combination of the two is
legally speaking a combined work, a
derivative of the original library. The
ordinary General Public License there-
fore permits such linking only if the
entire combination fits its criteria of
freedom. The Lesser General Public
License permits more lax criteria for
linking other code with the library.
We call this license the "Lesser"
General Public License because it
does Less to protect the user's free-
dom than the ordinary General Public
License. It also provides other free soft-
ware developers Less of an advantage
over competing non-free programs.
These disadvantages are the reason
SHR-2040/2041/2042-ENG-2 10/19/07 10:37 AM Page 10-19