Shared Source Common Language Infrastructure: Difference between revisions

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{{Infobox software

The '''Shared Source Common Language Infrastructure''' (previously codenamed '''Rotor''') is [[Microsoft]]'s [[shared source]] reference implementation of the Common Language Infrastructure ([[Common Language Infrastructure|CLI]]), the core of [[Microsoft .NET|.NET]]. Shared source is not real [[open source]] (e.g. it's not suitable for commercial use) but it makes it possible for [[programmer]]s to view the source of many .NET libraries, as well as for [[hacker]]s to create and use modified CLI versions. Microsoft provides the Shared Source Common Language Infrastructure as an reference CLI implementation and expects it to be of real value to students learning cross-platform compiler technologies, class system design guidelines, and so on, being the real-world illustration to their lectures.

| name = Shared Source Common Language Infrastructure (SSCLI)

| logo =

| logo_size =

| developer = [[Microsoft]]

| replaces =

| released = {{Start date and age|2002|03}}

| discontinued =

| latest release version = {{Start date and age|2006|03|23}}

| latest release date = 2.0

| latest preview version =

| latest preview date =

| repo = {{URL|https://github.com/SSCLI}}

| programming language = [[C Sharp (programming language)|C#]], [[JavaScript]], [[C++]], [[C (programming language)|C]]

| operating system =

| platform =

| genre = [[Software framework]]

| license = [[Microsoft Shared Source Common Language Infrastructure license]]

*[| website = {{URL|http://msdn.microsoft.com/msdnmag/issues/02/07/SharedSourceCLI/ Introduction to Shared Source CLI]}}

}}

The '''Shared Source Common Language Infrastructure''' (SSCLI), previously codenamed '''Rotor'''), is [[Microsoft]]'s [[shared source]] reference implementation of the Common Language Infrastructure ([[Common Language Infrastructure|CLI]]), the core of [[Microsoft .NET|.NET]]. SharedAlthough sourcethe SSCLI is not real [[open source]] (e.g. it's not suitable for commercial use) butdue to its license, it makesdoes make it possible for [[programmer]]s to viewexamine the sourceimplementation details of many .NET libraries, as well as for [[hacker]]sand to create and use modified CLI versions. Microsoft provides the Shared Source Common Language InfrastructureCLI as ana reference CLI implementation andsuitable expectsfor iteducational to be of real value to students learning cross-platform compiler technologies, class system design guidelines, and so on, being the real-world illustration to their lecturesuse.

==History==

The Shared Source Common Language Infrastructure comes pre-configured to run on [[Microsoft Windows|Windows]], [[FreeBSD]] (version 4.7 or newer), and [[Mac OS X]] 10.2. It is designed such that the only thing that needs to be customized to port the Shared Source Common Language Infrastructure to a different platform should be a thin PAL (platform abstraction layer).

Beginning in 2001, [[Microsoft]] announced they would release part of the [[.NET Framework]] infrastructure source code in [[Shared source]] through [[C Sharp (programming language)#Standardization|ECMA]], as part of the [[C Sharp (programming language)|C#]] and [[Common Language Infrastructure|CLI]] standardization process.<ref>{{cite web | url= http://ondotnet.com/pub/a/dotnet/2001/06/27/dotnet.html | title=Microsoft Plans Shared Source .NET | publisher= On .Net | quote= On Wednesday, Microsoft announced plans to release what amounts to a shared-source version of its .NET infrastructure for Windows and FreeBSD. Specifically, Microsoft says it has been working with the ECMA standards body and will release ECMA versions of the Common Language Infrastructure (CLI), a C# compiler, and an ECMAscript compiler. The CLI is similar to the Java virtual machine, in that it acts as a translator between the .NET infrastructure and other platforms. Program manager Dave Stutz says Redmond will work with Corel to develop the code | first1 =David | last1 = Sims | author2-link = Tim O'Reilly | first2 = Timonthy ‘Tim’ | last2 = O'Reilly | author3-link = Rael Dornfest | first3 = Rael | last3 = Dornfest | date = 2001-06-27 | accessdate = 2009-09-27}}</ref>

In March 2002, Microsoft released version 1.0 of the '''Shared Source Common Language Infrastructure''', also called '''Rotor'''.<ref>{{cite web | url= http://ondotnet.com/pub/a/dotnet/2002/03/04/rotor.html | title = Uncovering Rotor — A Shared Source CLI | publisher = On .Net | first = Brian | last = Jepson | date = 2002-03-04 | accessdate = 2009-09-27}}</ref> The Shared Source CLI was initially pre-configured to run on [[Microsoft Windows|Windows]], but could also be built on [[FreeBSD]] (version 4.7 or newer), and [[Mac OS X]] 10.2. It was designed such that the only thing that needed to be customized to port the Shared Source CLI to a different platform was a thin [[Abstraction layer|Platform Abstraction Layer]] (PAL).

The last 2.0 version of SSCLI was released in March 2006,<ref>{{cite web | url= http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=8c09fd61-3f26-4555-ae17-3121b4f51d4d | title= Shared Source Common Language Infrastructure 2.0 Release | publisher= [[Microsoft]] | date= 2006-03-23 | accessdate = 2009-05-21}}</ref> and contains most of the classes and features of version 2.0 of the [[.NET Framework]].<ref>{{cite web | url= http://www.c-sharpcorner.com/UploadFile/kristoferkrause/GuidetoMSsharedSourceCLI11302005232759PM/GuidetoMSsharedSourceCLI.aspx | title=A Beginner's Guide to Microsoft's shared Source CLI (Rotor) | publisher = C# corner| last= Krause|first= Kristofer | date = 2003-05-13 | quote= Most of the .NET framework class libraries are present except for ADO.NET, Windows Forms, Web Forms, and Web Services. Either you or the Rotor community will have to implement these. On a less painful note, remoting, networking, and XML functionality (and source) are included | accessdate = 2008-10-05}}</ref> SSCLI 2.0 can be downloaded directly from Microsoft downloads and requires [[Perl]] and [[Visual Studio 2005]] running on [[Windows XP SP2]] to compile.<ref>{{cite web | url = http://www.microsoft.com/downloads/en/details.aspx?FamilyId=8C09FD61-3F26-4555-AE17-3121B4F51D4D&displaylang=en#SystemRequirements | title = SSCLI 2.0 System Requirements | website = [[Microsoft]] | date = 2006-03-23 | accessdate = 2011-05-29}}</ref> Microsoft has not updated the source and build requirements since 2006. Even [[Microsoft Most Valuable Professional|Microsoft MVPs]], important part of Microsoft community ecosystem, complained about the lack of support for other Visual Studio versions and operating systems.<ref>{{cite web | url= http://msmvps.com/blogs/gbarnett/archive/2008/12/08/shared-source-cli-aka-rotor-on-vista.aspx | title= Shared Source CLI (aka Rotor) on Vista | last= Barnett | first= Granville | date= 2008-12-08 | accessdate= 2009-05-21 | url-status= dead | archiveurl= https://web.archive.org/web/20090101104145/http://msmvps.com/blogs/gbarnett/archive/2008/12/08/shared-source-cli-aka-rotor-on-vista.aspx | archivedate= 2009-01-01 }}</ref> However, a non-official patch for [[Visual Studio 2008]]<ref>{{cite web | url= http://blogs.msdn.com/b/jeremykuhne/archive/2008/02/19/sscli-2-0-and-visual-studio-2008.aspx | title=SSCLI 2.0 and Visual Studio 2008 | last = Kuhne| first = Jeremy | date= 2008-02-19 | accessdate= 2009-05-21}}</ref> was provided by a Microsoft employee in the [[MSDN Blog]] and another for [[Visual Studio 2010]] was released by the community.<ref>{{cite web | url= http://callvirt.net/blog/post/SSCLI-20-Patch-for-VS-2010.aspx | title= SSCLI 2.0 Patch for VS 2010 | last= Pobar | first= Joel | date= 2010-04-27 | accessdate= 2009-05-21 | archive-date= 2010-05-13 | archive-url= https://web.archive.org/web/20100513012523/http://callvirt.net/blog/post/SSCLI-20-Patch-for-VS-2010.aspx | url-status= dead }}</ref>

Later versions of .NET, originally known as .NET Core and now referred to simply as .NET, have been open sourced under the more permissive [[MIT License|MIT license]].

==License==

The Shared Source CLI use the non-free [[Shared source#Microsoft Shared Source Common Language Infrastructure|Microsoft Shared Source Common Language Infrastructure license]]. This license allows modifications and redistribution of the code for personal or academic usages, but they can't be used for commercial products.<ref>As written in the license, examples of commercial purposes would be running business operations, licensing, leasing, or selling the Software, or distributing the Software for use with commercial products</ref>

==See also==

* [[Microsoft and open source]]

*[[DotGNU]]

* [[Common Language Runtime]]

*[[Mono development platform|Mono]]

* [[.NET Core|.NET]]

* [[Mono development platform(software)|Mono]]

* [[DotGNU]]

==References==

{{Reflist|2}}

==External links==

*[http://www.microsoft.com/downloads/details.aspx?FamilyId=3A1C93FA-7462-47D0-8E56-8DD34C6292F0&displaylang=en Microsoft Shared Source Common Language Infrastructure Page]1.0 Release: {{GitHub|SSCLI/sscli_20021101}}

* Shared Source Common Language Infrastructure 2.0 Release: {{GitHub|SSCLI/sscli20_20060311}}

*[http://msdn.microsoft.com/msdnmag/issues/02/07/SharedSourceCLI/ Introduction to Shared Source CLI]

* [http://wwwmsdn.123aspxmicrosoft.com/rotormsdnmag/issues/02/07/SharedSourceCLI/default.aspx ReadIntroduction theto Shared Source Common Language Infrastructure's source code onlineCLI]

{{.NET}}

{{Common Language Infrastructure}}

[[Category:.NET implementations|Shared Source Common Language Infrastructure]]

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