E
ng
lis
h
copy,.it.is.irreversible.for.that.copy,.so.the.
ordinary.GNU.General.Public.License.applies.
to.all.subsequent.copies.and.derivative.works.
made.from.that.copy....This.option.is.useful.
when.you.wish.to.copy.part.of.the.code.of.the.
Library.into.a.program.that.is.not.a.library..
..4..You.may.copy.and.distribute.the.Library.
(or.a.portion.or.derivative.of.it,.under.Section.
2).in.object.code.or.executable.form.under.
the.terms.of.Sections.1.and.2.above.provided.
that.you.accompany.it.with.the.complete.
corresponding.machine-readable.source.code,.
which.must.be.distributed.under.the.terms.
of.Sections.1.and.2.above.on.a.medium.
customarily.used.for.software.interchange.
..If.distribution.of.object.code.is.made.by.
offering.access.to.copy.from.a.designated.
place,.then.offering.equivalent.access.to.copy.
the source code from the same place satisfies
the.requirement.to.distribute.the.source.code,.
even.though.third.parties.are.not.compelled.to.
copy.the.source.along.with.the.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....How-
ever,.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.execut-
able.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 file
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 significant
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 defined by
law. If such an object file uses only numeri
-
cal.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 file is unrestricted,
regardless.of.whether.it.is.legally.a.deriva-
tive.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.under.the.terms.
of.Section.6.Any.executables.containing.that.
work.also.fall.under.Section.6,.whether.or.not.
they.are.linked.directly.with.the.Library.itself..
..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.distrib-
ute.that.work.under.terms.of.your.choice,.pro-
vided that the terms permit modification of the
work for the customer's own use and reverse
engineering for debugging such modifications.
..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.among.
them,.as.well.as.a.reference.directing.the.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.used.in.the.work.
(which.must.be.distributed.under.Sections.1.
and.2.above);.and,.if.the.work.is.an.execut-
able.linked.with.the.Library,.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 modified executable containing the
modified Library. (It is understood that the
user who changes the contents of definitions
files in the Library will not necessarily be able
to.recompile.the.application.....to.use.the.mod-
ified definitions.) b) Use a suitable shared
library.mechanism.for.linking.with.the.Library...
A.suitable.mechanism.is.one.that.(1).uses.at.
run.time.a.copy.of.the.library.already.present.
on the user's computer system, rather than
copying.library.functions.into.the.executable,.
and (2) will operate properly with a modified
version.of.the.library,.if.the.user.installs.one,.
as long as the modified version is interface-
compatible.with.the.version.that.the.work.was.
made.with..c).Accompany.the.work.with.a.
written.offer,.valid.for.at.least.three.years,.to.
give the same user the materials specified in
Subsection.6a,.above,.for.a.charge.no.more.
than.the.cost.of.performing.this.distribution..
d).If.distribution.of.the.work.is.made.by.offer-
ing.access.to.copy.from.a.designated.place,.
