Editing GNU Mach

{{Short description|Operating system kernel}}
{{primary sources|date=October 2013}}

{{Infobox software
| name                   = GNU Mach
| title                  = GNU Mach
| logo                   = 
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| screenshot             = <!-- [[File: ]] -->
| caption                = 
| collapsible            = 
| author                 = 
| developer              = [[GNU Project]]
| released               = <!-- {{Start date|YYYY|MM|DD}} -->
| discontinued           = 
| latest release version = {{wikidata|property|preferred|references|edit|Q3046416|P348|P548=Q2804309}}
| latest release date    = {{wikidata|qualifier|preferred|single|Q3046416|P348|P548=Q2804309|P577}}
| latest preview version = {{wikidata|property|preferred|references|edit|Q3046416|P348|P548=Q51930650}}
| latest preview date    = {{wikidata|qualifier|preferred|single|Q3046416|P348|P548=Q51930650|P577}}
| programming language   = 
| operating system       = [[Unix-like]]
| platform               = 
| size                   = 
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| status                 = 
| genre                  = [[Kernel (operating system)|Kernel]]
| license                = [[GNU General Public License]]
| website                = {{URL|https://www.gnu.org/software/hurd/microkernel/mach/gnumach.html}}
}}
'''GNU Mach''' is an implementation of the [[Mach (kernel)|Mach microkernel]]. It is the default [[Microkernel#Microkernels|microkernel]] in the [[GNU Hurd]]. GNU Mach runs on [[IA-32]] machines. GNU Mach is maintained by developers on the GNU project. It is distributed under the terms of the [[GNU General Public License]] (GPL).

==History==
Early versions of the Hurd were developed on top of [[Carnegie Mellon University|CMU]]'s Mach 3.0.<ref>[https://www.gnu.org/software/hurd/history/hurd-announce Initial announcement of the Hurd], mentioning Mach 3.0</ref>

In 1994, CMU stopped working on Mach, and the GNU Project switched to the [[University of Utah]]'s Mach 4. The kernel known as "GNU Mach" was derived from Mach 4 once Utah stopped development. The first ChangeLog entry by [[Thomas Bushnell]] (rather than by a Utah researcher) is from 16 December 1996.<ref>{{Cite web |title=GNU |url=https://www.gnu.org/software/hurd/history/hurd-flash6 |access-date=16 March 2023 |website=GNU Operating System}}</ref><ref>{{Cite web|url=https://lists.debian.org/debian-hurd/1999/08/msg00191.html|title=Re: Which Mach is GNU Mach?|website=lists.debian.org}}</ref><ref>{{Cite web|url=http://git.savannah.gnu.org/cgit/hurd/gnumach.git/log/|title=hurd/gnumach.git - GNU Mach|website=git.savannah.gnu.org}}</ref>

In 2002, Roland McGrath branched the OSKit-Mach branch from GNU Mach 1.2, intending to replace all the device drivers and some of the hardware support with code from OSKit. After the release of GNU Mach 1.3, this branch was intended to become the GNU Mach 2.0 main line; however, as of 2006, OSKit-Mach is not being developed due to lack of activity in OSKit itself.<ref>{{Cite web|url=http://cvs.savannah.gnu.org/viewvc/hurd/gnumach/=announce-oskit-mach-1.2.90|title=[hurd] Log of /gnumach/=announce-oskit-mach-1.2.90|website=cvs.savannah.gnu.org}}</ref><ref name="1.3-announce">{{Cite web|url=https://lists.gnu.org/archive/html/bug-hurd/2002-05/msg00778.html|title=GNUmach 1.3 released|website=lists.gnu.org}}</ref><ref>{{Cite web|url=https://lists.gnu.org/archive/html/bug-hurd/2006-10/msg00022.html|title=Re: mach4 & gnumach/oskit...|website=lists.gnu.org}}</ref> Around 2006, an attempt to replace [[GNU Hurd]]'s kernel with the  [[EROS (microkernel)|Coyotos]] kernel also ended in failure.<ref>{{cite web |title=What happened with the Hurd ports to the OSKit Mach / L4 / Coyotos / Viengoos microkernels? |url=https://www.gnu.org/software/hurd/faq/which_microkernel.html |website=www.gnu.org}}</ref>

GNU Mach 1.4 was released on 27 September 2013, eleven years after 1.3.<ref>{{cite web |url=http://article.gmane.org/gmane.os.hurd.bugs/23683 |title=Happy 30th birthday, GNU! GNU Mach 1.4 released |website=article.gmane.org |last=Schwinge |first=Thomas |date=2013-09-27 |access-date=2017-09-21}}</ref>

===Version history===
*Version 1.0 was released on 14 April 1997.
*Version 1.1.1 was released on 12 May 1997.
*Version 1.1.2 was released on 10 June 1997.
*Version 1.1.3 was released on 12 June 1997.
*Version 1.2 was released on 21 June 1999.
*Version 1.3 was released on 27 May 2002, and features advanced boot script support, support for disks larger than 10 [[gigabyte]]s and an improved [[System console|console]].<ref name="1.3-announce"/>
*Version 1.4 was released on 27 September 2013.
*Version 1.5 was released on 10 April 2015.
*Version 1.6 was released on 31 October 2015.
*Version 1.7 was released on 18 May 2016.
*Version 1.8 was released on 18 December 2016.

==References==
{{Reflist}}

==External links==
{{Portal|Free and open-source software}}
*{{URL|https://www.gnu.org/software/hurd/microkernel/mach/gnumach.html}}
*[http://www.cs.utah.edu/flux/mach4/html/Mach4-proj.html The Mach 4 Project], from which GNU Mach was derived.

{{Microkernel}}
{{GNU}}

{{DEFAULTSORT:Gnu Mach}}
[[Category:GNU Project software|Mach]]
[[Category:Mach (kernel)]]
[[Category:Microkernels|Mach, Gnu]]