Warranty Information 45
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 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.
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 modified version of the Library.
The precise terms and conditions for copying, distribution and
modification follow. Pay close attention to the difference between
a "work based on the library" and a "work that uses the library".
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 COPYING,
DISTRIBUTION AND MODIFICATION
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 conveniently linked with application
programs (which use some of those functions and data) to form
executables.
The "Library", below, refers to any such software library or work
which has been distributed under these terms. A "work based on
the Library" means either the Library or any derivative work
under copyright law: that is to say, a work containing the Library
or a portion of it, either verbatim or with modifications and/or
translated straightforwardly into another language. (Hereinafter,
translation is included without limitation in the term
"modification".)
"Source code" for a work means the preferred form of the work
for making modifications to it. For a library, complete source
code means all the source code for all modules it contains, plus
any associated interface definition files, plus the scripts used to
control compilation and installation of the library.