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Copyright (C) 1991 Free Software Foundation, Inc.
51 Franklin Street, Fifth 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.
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 Library General Public License,
applies to some specially designated Free Software
Foundation software, and to any other libraries
whose authors decide to use it. You can use it for
your libraries, too.
When we speak of free software, we are referring to
freedom, 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 or use pieces of it in new free programs; and
that you know you can do these things.
To protect your rights, we need to make restrictions
that forbid anyone to deny you these rights or to ask
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For example, if you distribute copies of the library,
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recipients all the rights that we gave you. You must
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source code. If you link a program with the library,
you must provide complete object files to the
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after making changes to the library and recompiling it.
And you must show them these terms so they know
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Our method of protecting your rights has two steps:
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which gives you legal permission to copy, distribute
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Also, for each distributor's protection, we want to
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Finally, any free program is threatened constantly by
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Most GNU software, including some libraries, is
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which was designed for utility programs. This license,
the GNU Library General Public License, applies to
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The reason we have a separate public license for
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However, in a textual and legal sense, the linked
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Because of this blurred distinction, using the ordinary
General Public License for libraries did not effectively
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did not use the libraries. We concluded that weaker
conditions might promote sharing better.
However, unrestricted linking of non-free programs
would deprive the users of those programs of all
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themselves. This Library General Public License is
intended to permit developers of non-free programs
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a user of such programs to change the free libraries
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The precise terms and conditions for copying,
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former contains code derived from the library, while
the latter only works together with the library.
Note that it is possible for a library to be covered by
the ordinary General Public License rather than by
this special one.
GNU LIBRARY GENERAL
PUBLIC LICENSE
TERMS AND CONDITIONS FOR COPYING,
DISTRIBUTION AND MODIFICATION
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