Libidn COPYING -- Explanation of licensing conditions.
Copyright (C) 2002-2021 Simon Josefsson
See the end for copying conditions.

The source code for the C library (libidn.a or libidn.so), the C#
library (Libidn.dll) and the Java library (libidn-*.jar) are licensed
under the terms of either the GNU General Public License version 2.0
or later (see the file COPYINGv2) or the GNU Lesser General Public
License version 3.0 or later (see the file COPYING.LESSERv3), or both
in parallel as here.

The author of the Java library has agreed to also distribute it under
the Apache License Version 2.0 (see the file java/LICENSE-2.0).

The manual is licensed under the GNU Free Documentation License,
Version 1.3 or any later.

The command line tool, self tests, examples, and other auxiliary
files, are licensed under the GNU General Public License version 3.0
or later.

Other files are licensed as indicated in each file.

There may be exceptions to these general rules, see each file for
precise information.

For any copyright year range specified as YYYY-ZZZZ in this package
note that the range specifies every single year in that closed interval.

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Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved.