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above on a medium customarily used for software
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offering equivalent access to copy the source code
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object code.
5. A program that contains no derivative of any
portion of the Library, but is designed to work with
the Library by being compiled or linked with it, is
called a "work that uses the Library". Such a work,
in isolation, is not a derivative work of the Library,
and therefore falls outside the scope of this License.
However, linking a "work that uses the Library" with
the Library creates an executable that is a derivative
of the Library (because it contains portions of the
Library), rather than a "work that uses the library".
The executable is therefore covered by this License.
Section 6 states terms for distribution of such
executables.
When a "work that uses the Library" uses material
from a header fi le that is part of the Library, the
object code for the work may be a derivative work
of the Library even though the source code is not.
Whether this is true is especially signifi cant if the
work can be linked without the Library, or if the
work is itself a library. The threshold for this to be
true is not precisely defi ned by law.
If such an object fi le uses only numerical
parameters, data structure layouts and accessors,
and small macros and small inline functions (ten
lines or less in length), then the use of the object fi le
is unrestricted, regardless of whether it is legally a
derivative work. (Executables containing this object
code plus portions of the Library will still fall under
Section 6.)
Otherwise, if the work is a derivative of the Library,
you may distribute the object code for the work
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containing that work also fall under Section 6,
whether or not they are linked directly with the
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6. As an exception to the Sections above, you may
also combine or link a "work that uses the Library"
with the Library to produce a work containing
portions of the Library, and distribute that work
under terms of your choice, provided that the terms
permit modifi cation of the work for the customer'
s own use and reverse engineering for debugging
such modifi cations.
You must give prominent notice with each copy of
the work that the Library is used in it and that the
Library and its use are covered by this License.
You must supply a copy of this License. If the work
during execution displays copyright notices, you
must include the copyright notice for the Library
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user to the copy of this License. Also, you must do
one of these things:
a) Accompany the work with the complete
corresponding machine-readable source code
for the Library including whatever changes were
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with the complete machine readable "work
that uses the Library", as object code and/or
source code, so that the user can modify the
Library and then relink to produce a modifi ed
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is understood that the user who changes the
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necessarily be able to recompile the application
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b) Use a suitable shared library mechanism for
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is one that (1) uses at run time a copy of the
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7. You may place library facilities that are a work
based on the Library side-by-side in a single library
together with other library facilities not covered by
this License, and distribute such a combined library,
provided that the separate distribution of the work
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