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[[license text="""
Copyright © 2007 Free Software Foundation, Inc.
Permission is granted to copy, distribute and/or modify this document under the
terms of the GNU Free Documentation License, Version 1.2 or any later version
published by the Free Software Foundation; with no Invariant Sections, no
Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included
in the section entitled [[GNU_Free_Documentation_License|/fdl.txt]].
By contributing to this page, you agree to assign copyright for your
contribution to the Free Software Foundation. The Free Software Foundation
promises to always use either a verbatim copying license or a free
documentation license when publishing your contribution. We grant you back all
your rights under copyright, including the rights to copy, modify, and
redistribute your contributions.
"""]]
# Porting Applications
Debian is currently the Hurd distribution of choice among Hurd
users and developers. Approximately half of the Debian archive
has been compiled successfully on the Hurd, however, many
programs fail to build for various reasons. A [list of build
failures including error messages](http://unstable.buildd.net/buildd/hurd-i386_Failed.html)
can be found, as well as a [preliminary analysis](http://lists.debian.org/debian-hurd/2007/07/msg00000.html)
of them. If you want to port any of these, file patches in the
[Alioth patch tracker](http://alioth.debian.org/tracker/?atid=410472&group_id=30628&func=browse)
for review. It might be a good idea to record your intention
to port something in the [Alioth task tracker](http://alioth.debian.org/pm/task.php?group_project_id=34&group_id=30628&func=browse) so other people do not do duplicated work. You can also just
install the Hurd and find what doesn't work for you and port
it and then file patches for that package in [above patch tracker](http://alioth.debian.org/tracker/?atid=410472&group_id=30628&func=browse).
Another important task is making sure that patches go upstream as
well, especially for GNU projects.
If you want to further development, a list of interesting
projects is available in the [Alioth task tracker](http://alioth.debian.org/pm/task.php?group_project_id=35&group_id=30628&func=browse).
Those projects are not necessarily Debian specific, but do
not touch the Hurd proper.
# Hurd Proper
If you are interested in developping the Hurd proper, there is
plenty of work to do. Before you can significantly contribute,
take some time to learn about the system, e.g.,
[[microkernels_for_beginners|microkernel/for_beginners]]. Until you can do the basic exercises
listed there, you won't be able to significantly contribute to
the Hurd.
See the [[ToDo]].
# GNU Mach
[[GNU_Mach|microkernel/mach/gnumach]] is the underlying microkernel used by the
Hurd. It has a number of deficencies;
[[microkernel/mach/gnumach/RevivalProject]].
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