License/sv: Difference between revisions
Renatorivo (talk | contribs) |
(Updating to match new version of source page) |
||
| Line 1: | Line 1: | ||
=== |
=== Statement of the maintainer === |
||
I know that the discussion on the ''"right"'' licence for open source occupied a significant portion of internet bandwidth and so is here the reason why, in my opinion, FreeCAD should have this one. |
|||
I chose the [http://en.wikipedia.org/wiki/LGPL LGPL] for the project and I know the pro and cons about the LGPL and will give you some reasons for that decision. |
|||
Jag vet att diskussionen om ''"rätt"'' licens för öppen källkod tar upp en signifikant del av internetbandbredden, så här är skälen till varför, enligt min åsikt, FreeCAD ska ha denna. |
|||
FreeCAD is a mixture of a library and an application, so the GPL would be a little bit strong for that. It would prevent writing commercial modules for FreeCAD because it would prevent linking with the FreeCAD base libs. You may ask why commercial modules at all? Therefore Linux is good example. Would Linux be so successful when the GNU C Library would be GPL and therefore prevent linking against non-GPL applications? And although I love the freedom of Linux, I also want to be able to use the very good NVIDIA 3D graphic driver. I understand and accept the reason NVIDIA does not wish to give away driver code. We all work for companies and need payment or at least food. So for me, a coexistence of open source and closed source software is not a bad thing, when it obeys the rules of the LGPL. I would like to see someone writing a Catia import/export processor for FreeCAD and distribute it for free or for some money. I don't like to force him to give away more than he wants to. That wouldn't be good neither for him nor for FreeCAD. |
|||
Jag valde [http://sv.wikipedia.org/wiki/GNU_Lesser_General_Public_License LGPL] och [http://sv.wikipedia.org/wiki/GNU_General_Public_License GPL] för projektet och jag vet för- och nackdelarna med LGPL och vill ge dig några skäl till det beslutet. |
|||
Nevertheless this decision is made only for the core system of FreeCAD. Every writer of an application module may make his own decision. |
|||
FreeCAD är en blandning av bibliotek och en applikation, så GPL skulle vara lite för starkt för det. Det skulle förhindra skapande av kommersiella moduler för FreeCAD därför att det skulle förhindra länkning med FreeCAD's basbibliotek. Du kanske frågar dig: varför kommersiella moduler överhuvudtaget? Därför är Linux ett bra exempel. Skulle Linux vara så framgångsrikt om GNU C Biblioteket skulle vara GPL och därför förhindra länkning mot icke-GPL applikationer? Och fastän jag älskar friheten i Linux, så vill jag också kunna använda den mycket bra NVIDIA 3D grafikdrivrutinen. Jag förstår och accepterar anledningen till att NVIDIA inte vill ge bort drivrutinskod. Vi jobbar alla för företag och behöver lön eller åtninstone mat. Så för mig är en samexistens av öppen källkod och sluten källkodsmjukvara inte något dåligt, när det följer reglerna i LGPL. Jag skulle vilja se någon som skriver en Catia import/export processor för FreeCAD och distribuerar den gratis eller för lite pengar. Jag tycker inte om att tvinga honom att ge bort mer än han vill. Det skulle inte vara bra varken för honom eller FreeCAD. |
|||
=== Used Licences === |
|||
Detta beslut är ändå bara gjort för FreeCAD's kärnsystem. Var och en som skriver en applikationsmodul kan ta sina egna beslut. |
|||
Here the two licences under which FreeCAD is published: |
|||
;[[wikipedia:LGPL|Lesser General Public Licence (LGPL2+)]]: For the core libs as stated in the .h and .cpp files in src/App src/Gui src/Base and most [[Workbenches|modules]] in src/Mod and for the executable as stated in the .h and .cpp files in src/main. The icons and other graphic parts are also LGPL. |
|||
| ⚫ | |||
=== Använda licenser === |
|||
| ⚫ | |||
Här är de tre licenserna under vilka FreeCAD är publicerad: |
|||
;[http://sv.wikipedia.org/wiki/GNU_General_Public_License GPL]: För Python sripten för att bygga binärfilerna som uttalat i .py filerna i src/Tools |
|||
=== License side effects === |
|||
;[http://sv.wikipedia.org/wiki/GNU_Lesser_General_Public_License LGPL]: För kärnbiblioteken som uttalat i .h och .cpp filerna i src/App src/Gui src/Base och de flesta [[Workbenches/sv|modulerna]] i src/Mod och för de körbara som uttalat i .h och .cpp filerna i src/main |
|||
Up to Version 0.13 FreeCAD is delivered as GPL2+, although the source itself is under LGPL2+. Thats because of linkage of Coin3D (GPL2) and PyQt(GPL). Starting with 0.14 we will be completely GPL free. PyQt will be replaced by PySide, and Coin3D was re-licensed under BSD. One problem, we still have to face, license-wise, the [http://www.opencascade.org/getocc/license/ OCTPL (Open CASCADE Technology Public License)]. Its a License mostly LGPL similar, with certain changes. On of the originators, Roman Lygin, elaborated on the License on his [http://opencascade.blogspot.de/2008/12/license-to-kill-license-to-use.html Blog]. The home-brew OCTPL license leads to all kind of side effects for FreeCAD, which where widely discussed on different forums and mailing lists, e.g. on [http://www.opencascade.org/org/forum/thread_15859/?forum=3 OpenCasCade forum itself]. I will link here some articles for the biggest problems. |
|||
| ⚫ | |||
==== GPL2/GPL3/OCTLP incompatibility ==== |
|||
We first discovered the problem by a discussion on the [http://www.fsf.org/ FSF] high priority project [https://groups.google.com/forum/#!topic/polignu/XRergtwsm80 discussion list]. It was about a library we look at, which was licensed with GPL3. Since we linked back then with Coin3D, with GPL2 only, we was not able to adopt that lib. Also the |
|||
OCTPL is considered [http://www.opencascade.org/occt/faq/ GPL incompatible]. This Libre Graphics World article [http://libregraphicsworld.org/blog/entry/libredwg-drama-the-end-or-the-new-beginning "LibreDWG drama: the end or the new beginning?"] shows up the drama of LibreDWG project not acceptably in FreeCAD or LibreCAD. |
|||
==== Debian ==== |
|||
The incompatibility of the OCTPL [http://lists.debian.org/debian-legal/2009/10/msg00000.html was discussed on the debian legal list] and lead to a [http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=617613 bug report on the FreeCAD package] which prevent (ignor-tag) the transition from debian-testing to the main distribution. But its also mentioned thats a FreeCAD, which is free of GPL code and libs, would be acceptably. With a re-licensed Coin3D V4 and a substituted PyQt we will hopefully reach GPL free with the 0.14 release. |
|||
==== Fedora/RedHat non-free ==== |
|||
Vi försöker att endast använda LGPL typ licenser för kärnsystemets länkade bibliotek (se [[Third Party Libraries/sv|Tredjepartsbibliotek]]) med ett undantag: |
|||
In the Fedora project OpenCasCade is listed "non-free". This means basically it won't make it into Fedora or RedHat. This means also FreeCAD won't make it into Fedora/RedHat until OCC is changing its license. Here the links to the license evaluation: |
|||
* [http://lists.fedoraproject.org/pipermail/legal/2011-September/001713.html Discussion on the Fedora-legal-list] |
|||
* [https://bugzilla.redhat.com/show_bug.cgi?id=458974#c10 License review entry in the RedHat bug tracker] |
|||
The main problem they have AFIK is that the OCC license demand non discriminatory support fees if you want to do paid support. It has nothing to do with "free" or OpenSource, its all about RedHat's business model! |
|||
=== Impact of the licences === |
|||
* Coin3D licensen ([http://www.coin3d.org/licensing/ www.coin3d.org]). |
|||
==== Private users ==== |
|||
Private users can use FreeCAD free of charge and can do basically whatever they want to do with it.... |
|||
==== Professional users ==== |
|||
| ⚫ | |||
Can use FreeCAD freely, for any kind of private or professional work. They can customize the application as they wish. They can write open or closed source extensions to FreeCAD. They are always master of their data, they are not forced to update FreeCAD, change their usage of FreeCAD. Using FreeCAD doesn't bind them to any kind of contract or obligation. |
|||
=== |
==== Open Source developers ==== |
||
Can use FreeCAD as the groundwork for own extension modules for special purposes. They can choose either the GPL or the LGPL to allow the use of their work in proprietary software or not. |
|||
==== Commercial developers ==== |
|||
Commercial developers can use FreeCAD as the groundwork for their own extension modules for special purposes and are not forced to make their modules open source. They can use all modules which use the LGPL. They are allowed to distribute FreeCAD along with their proprietary software. They will get the support of the author(s) as long as it is not a one way street. |
|||
| ⚫ | |||
==== Privata användare ==== |
|||
Privata användare kan använda FreeCAD utan avgift och kan göra ungefär vad de vill med den.... |
|||
| ⚫ | |||
{{clear}} |
|||
==== Professionella användare ==== |
|||
<languages/> |
|||
Kan använda FreeCAD fritt, för alla sorters privata eller professionella arbeten. De kan anpassa applikationen som de önskar. De kan skriva öppen eller sluten källkodsextensioner till FreeCAD. De är alltid herrar över deras data, de är inte tvingade att uppdatera FreeCAD, ändra deras bruk av FreeCAD. Att använda FreeCAD binder dem inte till några kontrakt eller krav. |
|||
==== Öppen källkodsutvecklare ==== |
|||
Kan använda FreeCAD som grundplattform för egna extensionsmoduler för speciella ändamål. De kan välja antingen GPL eller LGPL för att tillåta bruk av deras arbete i proprietär mjukvara, eller inte. |
|||
==== Professionella utvecklare ==== |
|||
Professionella utvecklare Kan använda FreeCAD som grundplattform för egna extensionsmoduler för speciella ändamål och är inte tvingade att göra sina moduler till öppen källkod. De kan använda alla moduler som använder LGPL. De är tillåtna att distribuera FreeCAD tillsammans med deras proprietära mjukvara. De kommer få support av författarna så länge som den inte är enkelriktad. Om du vill sälja din modul så behöver du en Coin3D licens, annars är du tvingad av detta bibliotek att göra den till öppen källkod. |
|||
| ⚫ | |||
{{languages/sv | {{en|Licence}} {{de|Licence/de}} {{es|Licence/es}} {{fr|Licence/fr}} {{jp|Licence/jp}} {{ru|Licence/ru}} }} |
|||
| ⚫ | |||
Revision as of 21:46, 5 November 2014
Statement of the maintainer
I know that the discussion on the "right" licence for open source occupied a significant portion of internet bandwidth and so is here the reason why, in my opinion, FreeCAD should have this one.
I chose the LGPL for the project and I know the pro and cons about the LGPL and will give you some reasons for that decision.
FreeCAD is a mixture of a library and an application, so the GPL would be a little bit strong for that. It would prevent writing commercial modules for FreeCAD because it would prevent linking with the FreeCAD base libs. You may ask why commercial modules at all? Therefore Linux is good example. Would Linux be so successful when the GNU C Library would be GPL and therefore prevent linking against non-GPL applications? And although I love the freedom of Linux, I also want to be able to use the very good NVIDIA 3D graphic driver. I understand and accept the reason NVIDIA does not wish to give away driver code. We all work for companies and need payment or at least food. So for me, a coexistence of open source and closed source software is not a bad thing, when it obeys the rules of the LGPL. I would like to see someone writing a Catia import/export processor for FreeCAD and distribute it for free or for some money. I don't like to force him to give away more than he wants to. That wouldn't be good neither for him nor for FreeCAD.
Nevertheless this decision is made only for the core system of FreeCAD. Every writer of an application module may make his own decision.
Used Licences
Here the two licences under which FreeCAD is published:
- Lesser General Public Licence (LGPL2+)
- For the core libs as stated in the .h and .cpp files in src/App src/Gui src/Base and most modules in src/Mod and for the executable as stated in the .h and .cpp files in src/main. The icons and other graphic parts are also LGPL.
- Open Publication Licence
- For the documentation on http://free-cad.sourceforge.net/ as not marked differently by the author
See FreeCAD's debian copyright file for more details about the licenses used in FreeCAD
License side effects
Up to Version 0.13 FreeCAD is delivered as GPL2+, although the source itself is under LGPL2+. Thats because of linkage of Coin3D (GPL2) and PyQt(GPL). Starting with 0.14 we will be completely GPL free. PyQt will be replaced by PySide, and Coin3D was re-licensed under BSD. One problem, we still have to face, license-wise, the OCTPL (Open CASCADE Technology Public License). Its a License mostly LGPL similar, with certain changes. On of the originators, Roman Lygin, elaborated on the License on his Blog. The home-brew OCTPL license leads to all kind of side effects for FreeCAD, which where widely discussed on different forums and mailing lists, e.g. on OpenCasCade forum itself. I will link here some articles for the biggest problems.
GPL2/GPL3/OCTLP incompatibility
We first discovered the problem by a discussion on the FSF high priority project discussion list. It was about a library we look at, which was licensed with GPL3. Since we linked back then with Coin3D, with GPL2 only, we was not able to adopt that lib. Also the OCTPL is considered GPL incompatible. This Libre Graphics World article "LibreDWG drama: the end or the new beginning?" shows up the drama of LibreDWG project not acceptably in FreeCAD or LibreCAD.
Debian
The incompatibility of the OCTPL was discussed on the debian legal list and lead to a bug report on the FreeCAD package which prevent (ignor-tag) the transition from debian-testing to the main distribution. But its also mentioned thats a FreeCAD, which is free of GPL code and libs, would be acceptably. With a re-licensed Coin3D V4 and a substituted PyQt we will hopefully reach GPL free with the 0.14 release.
Fedora/RedHat non-free
In the Fedora project OpenCasCade is listed "non-free". This means basically it won't make it into Fedora or RedHat. This means also FreeCAD won't make it into Fedora/RedHat until OCC is changing its license. Here the links to the license evaluation:
The main problem they have AFIK is that the OCC license demand non discriminatory support fees if you want to do paid support. It has nothing to do with "free" or OpenSource, its all about RedHat's business model!
Impact of the licences
Private users
Private users can use FreeCAD free of charge and can do basically whatever they want to do with it....
Professional users
Can use FreeCAD freely, for any kind of private or professional work. They can customize the application as they wish. They can write open or closed source extensions to FreeCAD. They are always master of their data, they are not forced to update FreeCAD, change their usage of FreeCAD. Using FreeCAD doesn't bind them to any kind of contract or obligation.
Open Source developers
Can use FreeCAD as the groundwork for own extension modules for special purposes. They can choose either the GPL or the LGPL to allow the use of their work in proprietary software or not.
Commercial developers
Commercial developers can use FreeCAD as the groundwork for their own extension modules for special purposes and are not forced to make their modules open source. They can use all modules which use the LGPL. They are allowed to distribute FreeCAD along with their proprietary software. They will get the support of the author(s) as long as it is not a one way street.
