@@ -40,6 +40,12 @@ XZ Utils Licensing
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free software licenses. These aren't built or installed as
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part of XZ Utils.
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+ The following command may be helpful in finding per-file license
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+ information. It works on xz.git and on a clean file tree extracted
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+ from a release tarball.
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+
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+ sh build-aux/license-check.sh -v
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+
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For the files under the BSD Zero Clause License (0BSD), if
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a copyright notice is needed, the following is sufficient:
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@@ -59,25 +65,6 @@ XZ Utils Licensing
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- COPYING.GPLv2: GNU General Public License version 2
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- COPYING.GPLv3: GNU General Public License version 3
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- A note about old XZ Utils releases:
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-
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- XZ Utils releases 5.4.6 and older and 5.5.1alpha have a
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- significant amount of code put into the public domain and
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- that obviously remains so. The switch from public domain to
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- 0BSD for newer releases was made in Febrary 2024 because
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- public domain has (real or perceived) legal ambiguities in
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- some jurisdictions.
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-
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- There is very little *practical* difference between public
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- domain and 0BSD. The main difference likely is that one
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- shouldn't claim that 0BSD-licensed code is in the public
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- domain; 0BSD-licensed code is copyrighted but available under
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- an extremely permissive license. Neither 0BSD nor public domain
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- require retaining or reproducing author, copyright holder, or
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- license notices when distributing the software. (Compare to,
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- for example, BSD 2-Clause "Simplified" License which does have
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- such requirements.)
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-
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If you have questions, don't hesitate to ask for more information.
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The contact information is in the README file.
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