| 词条 | Q Public License |
| 释义 |
| name = Q Public License | image = | caption = | author = Trolltech | version = 1.0 | copyright = Trolltech AS | date = 1999–2000 | OSI approved = Yes | Debian approved = No[1] | Free Software = Yes[2] | GPL compatible = No[2] | copyleft = No[2] | linking = }} The Q Public License (QPL) is a non-copyleft license, created by Trolltech for its free edition of the Qt. It was used until Qt 3.0, as Trolltech toolkit version 4.0 was released under GPL version 2. It fails the Debian Free Software Guidelines,[1] used by several Linux distributions, though it qualifies for the Free Software Foundation's Free Software Definition; however, it is not compatible with the FSF's GNU General Public License,[2] meaning that products derived from code under both the GPL and the QPL cannot be redistributed. HistoryKDE, a desktop environment for Linux, is based on Qt. Only the free open source edition of Qt was covered by the QPL; the commercial edition, which is functionally equal, is under a pay-per-use license and could not be freely distributed. Meanwhile, the Free Software Foundation and authors of the GPL objected to the QPL as it was a non-copyleft license incompatible with the GPL.[1] As KDE grew in popularity, the free software community urged Trolltech to license Qt under the GPL to ensure that it would remain free software forever and could be used and developed by commercial third parties. Eventually, under pressure, Trolltech dual-licensed the free edition of Qt 2.2 for use under the terms of the GPL or the QPL.[2]AdoptionOther projects that have adopted the Q Public License, sometimes with a change in the choice of jurisdiction clause, include:
Previous projects using the Q Public License include:
The Debian project rejects software covered by solely QPL[4] (and not dual licensed with something else like the GPL) because of:
ComplianceAll legal disputes about the license are settled in Oslo, Norway[5], but it has never been legally contested. See also{{Portal|Free and open-source software}}
References1. ^1 2 3 4 {{cite web |url=https://www.gnu.org/licenses/license-list.html#QPL |title=Various Licenses and Comments about Them |publisher=GNU Project}} 2. ^{{cite web|title=Trolltech to Release Qt Under GPL|url=http://www.linuxplanet.com/linuxplanet/reports/2269/1/|first=Kevin|last=Reichard|publisher=LinuxPlanet|date=September 4, 2000|access-date=October 27, 2018}} 3. ^{{cite web |url=http://ocaml.org/releases/4.03.html |title=OCaml 4.03 Release Notes}} 4. ^1 2 {{cite web |url=http://lists.debian.org/debian-legal/2004/06/msg00131.html |title=Re: Bug#251983: libcwd: QPL license is non-free; package should not be in main |work=debian-legal mailinglist |date=8 June 2004}} 5. ^{{cite web|title=The Q Public License Version (QPL-1.0)|url=https://opensource.org/licenses/QPL-1.0|publisher=Trolltech|date=1999|quote=Disputes shall be settled by Oslo City Court.|access-date=October 27, 2018}} External links
2 : Free and open-source software licenses|Qt (software) |
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