Appendix, Gnu lesser general public license, Ap p en d ix – LG 37LD452C User Manual

Page 162

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APPENDIX

A

P

P

EN

D

IX

Copyright (C) 1991, 1999 Free Software Foundation, Inc. 51

Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

Everyone is permitted to copy and distribute verbatim cop-

ies of this license document, but changing it is not

allowed.

[This is the first released version of the Lesser GPL. It also

counts as the successor of the GNU Library Public

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 designated 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 ordinary General Public License is the better strat-

egy to use in any particular case, based on the explana-

tions below.

When we speak of free software, we are referring to free-

dom of use, not price. Our General Public Licenses are

designed to make sure that you have the freedom to dis-

tribute 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 restrictions 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 copy-

right the library, and (2) we offer you this license, which

gives you legal permission to copy, distribute and/or mod-

ify the library.

To protect each distributor, we want to make it very clear

that there is no warranty 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 constant threat to the exis-

tence of any free program. We wish to make sure that a

company cannot effectively restrict the users of a free pro-

gram 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 origi-

nal library. The ordinary General Public License therefore

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 freedom than

the ordinary General Public License. It also provides other

free software developers Less of an advantage over com-

peting non-free programs. These disadvantages are the

reason we use the ordinary General Public License for

many libraries. However, the Lesser license provides advan-

tages in certain special circumstances.

For example, on rare occasions, there may be a special

need to encourage the widest possible use of a certain

library, so that it becomes a de-facto standard. To achieve

this, non-free programs must be allowed to use the library.

A more frequent case is that a free library does the same

job as widely used non-free libraries. In this case, there is

little to gain by limiting the free library to free software only,

so we use the Lesser General Public License.

In other cases, permission to use a particular library in non-

free programs enables a greater number of people to use

a large body of free software. For example, permission to

use the GNU C Library in non-free programs enables many

more people to use the whole GNU operating system, as

well as its variant, the GNU/Linux operating system.

GNU LESSER GENERAL PUBLIC LICENSE

Version 2.1, February 1999

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