「GPLv3ドラフト3公開」記事へのコメント

自動的にバージョンアップ

[bluedwarf (11629)]

How to Apply These Terms to Your New Programs [gnu.org]には、

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

という、あるソースコードがGPLであることを示すための文例が示されています。いつも、何の気なしにこの文章を自分のソースコードにコピペするのですが、これを書いてしまうと勝手に(太字で強調したところを根拠にして)バージョン3が適用され

--
// Give me chocolates!

Re:自動的にバージョンアップ

[Anonymous Coward]

GNU Lesser General Public License - GNU Project - Free Software Foundation (FSF) [gnu.org]:

3. You may opt to apply the terms of the ordinary GNU General Public License instead of this License to a given copy of the Library. To do this, you must alter all the notices that refer to this License, so that they refer to the ordinary GNU General Public License, version 2, instead of to this License. (If a newer version than version 2 of the ordinary GNU General Public License has appeared, then you can specify that version instead if you wish.) Do not make any other change in these notices.

Once this change is made in a given 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.

LGPLにあるGPLへのアップグレード機能はもっと凄い。「GPLを適用するための文例」の奴と違ってv2固定とか出来ない。LGPL強い。超強い。超GNU/Freedom。