Apéndice72
Apéndice
6
Gnomovision version 69, Copyright ©
year name of author
Gnomovision comes w ith ABSOL UTEL Y
NO W ARRANTY; f or details type `show
w' . This is free software, and you are
welcome to redistribute it under
certain conditions; type `show c' for
details.
The hypothetical commands `show w' and
`show c' should show the appropriate parts
of the General Public License. Of course,
the commands you use may be called
something other than `show w' and `show
c'; they could even be mouse- clicks or
menu items--whatever suits your prog ram.
Y ou should also get your employer (if you
work as a programmer) or your school, if
any , to sign a "copyright disclaimer" for the
program, if necessary. Here is a sample;
alter the names:
Y oyodyne, Inc., hereb y disclaims all
copyright interest in the program
`Gnomovision' (which makes passes at
compilers) written by James Hacker.
<signature of T y Coon>, 1 April 1989
Ty Coon, P resident of Vice
This General Public License does not
permit incorporating your program into
proprietary programs. If your program is
a subroutine library, you may consider it
more useful to permit linking proprietary
applications with the library. If this is what
you want to do, use the GNU Lesser General
Public License instead of this License.
GNU LESSER
GENERAL PUBLIC
LICENSE
Version 2.1, F ebruary 1999
Copyright © 1991, 1999 Fr ee Software
Foundation, Inc.
51 Franklin Street, F ifth Floor , Boston, MA
02110-1301 USA
Everyone is permitted to copy and
distribute verbatim copies of this license
document, but changing it is not allowed.
[ This is the rst 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 f or most software are des igned
to take away your freedom to shar e and
change it. By contrast, the GNU General
Public Licenses are intended to guarant ee
your freedom to share and change fr ee
software--to make sure the soft ware is free
for all its users.
This license, the Lesser General P ublic
License, applies to some specially
designated software packages--typically
libraries--of the Free Software Foundation
and other authors who decide to use it.
Y ou can use it too, but we suggest y ou rst
think carefully a bout whether this license o r
the ordinary General Public License is the
better 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 y ou
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.
T o protect your rights, w e 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 f ee, you must
give the recipients all the rights that we
gave you. Y ou must make sure that they,
too, receiv e or can get the source code. If
you link other code with the library, you
must provide complete object les to the
recipients, so that they can relink them with
the library after mak ing changes to the
library and recompiling it. And you must
show them these terms so they know their
rights.
We prot ect your rights with a two-step
method: (1) we copyright the library, and
(2) we oer you this license, which g ives
you legal permission to copy , distribute
and/or modify the library.
T o protect each distributor , we want to
make it very clear that there is no warranty
for the free library. Also , if the library is
modied 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 aected by problems that might be
introduced by others.
Finally , software patents pose a constant
threat to the existence of any fr ee program.
We wish to make sure that a compan y
cannot eectively restrict the users of a
free program by obtaining a r estrictive
license from a patent holder . Therefor e, we
insist that any patent license obtained for
a version of the library must be consistent
with the full freedom of use specied in
this license.
Most GNU software, including some
libraries, is covered by the or dinary GNU
General Public License. This license, the
GNU Lesser General Public License, applies
to certain designated libraries, and is quite
dierent from the or dinary 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 theref ore permits such
linking only if the entire combination ts
its criteria of freedom. The Lesser General
Public License permits more lax criteria for
linking other code with the librar y .
We call this license the "L esser" 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 competing non-
free programs. These disadvantages ar e
the reason we use the ordinary General
Public License for man y libraries. However ,
the Lesser license provides advantages in
certain special circumstances.
For example , on rare occasions, there may
be a special need to encourage the widest
possible use of a certain librar y , so that it
becomes a de-facto standard. T o achieve
this, non-free programs must be allo wed 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 librar y in non-free programs
enables a greater number of people to use
a large body of free software. F or example,
permission to use the GNU C Library in
non-free programs enables many mor e
people to use the whole GNU operating
system, as well as its variant, the GNU/Linux
operating system.
Although the Lesser General Public License
is Less protective of the users' freedom, it
does ensure that the user of a program that
is linked with the Library has the freedom
and the wherewithal to run that program
using a modied version of the Library.
The precise terms and conditions for
copying, distribution and modication
follow . Pa y close attention to the dierence
between a "work based on the librar y" and
a "work that uses the librar y" . The former
contains code derived from the library,
whereas the latter must be combined with
the library in order to run.
TERMS AND CONDITIONS FOR
COP YING, DISTRIBUTION AND
MODIFICA TION
0. This License Agreement applies to
any software library or other program
which contains a notice placed by the
copyright holder or other authorized
party saying it may be distributed
under the terms of this Lesser General
Public License (also called "this
License"). Each licensee is addressed as
"you" .
A "library" means a collection of
software functions and/or data
prepared so as to be conv eniently
linked with application programs
(which use some of those functions
and data) to form executables.
The "Library" , below , ref ers to any such
HB916-MD0_BUSAPPK_SPA.indd 72 2011-09-23 �� 9:05:45