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docs: simplify and clarify the platform support rules

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The distinction between short life and long life Linux distributions
turned out to be redundant. They can both be covered in a simple way
by noting support will target the current release, and the previous
release for a period of two years or until its EOL. This rule can also
apply to the other UNIX based distros, leaving only Windows needing a
different set of rules.

This also clarifies that Debian LTS is out of scope, because the LTS
support is provided by a separate group from the main Debian maintainer
team.

Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
This commit is contained in:
Daniel P. Berrangé 2020-09-17 16:50:47 +01:00
parent 4d7beeab38
commit e6e80fcfd6
1 changed files with 24 additions and 41 deletions
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docs/system/build-platforms.rst
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@ -25,55 +25,38 @@ software in their distro, QEMU upstream code will not add explicit
support for those backports, unless the feature is auto-detectable in a
manner that works for the upstream releases too.
The Repology site https://repology.org is a useful resource to identify
The `Repology`_ site is a useful resource to identify
currently shipped versions of software in various operating systems,
though it does not cover all distros listed below.
Linux OS
--------
Linux OS, macOS, FreeBSD, NetBSD, OpenBSD
-----------------------------------------
For distributions with frequent, short-lifetime releases, the project
will aim to support all versions that are not end of life by their
respective vendors. For the purposes of identifying supported software
versions, the project will look at Fedora, Ubuntu, and openSUSE distros.
Other short- lifetime distros will be assumed to ship similar software
versions.
The project aims to support the most recent major version at all times. Support
for the previous major version will be dropped 2 years after the new major
version is released or when the vendor itself drops support, whichever comes
first. In this context, third-party efforts to extend the lifetime of a distro
are not considered, even when they are endorsed by the vendor (eg. Debian LTS).
For distributions with long-lifetime releases, the project will aim to
support the most recent major version at all times. Support for the
previous major version will be dropped 2 years after the new major
version is released, or when it reaches "end of life". For the purposes
of identifying supported software versions, the project will look at
RHEL, Debian, Ubuntu LTS, and SLES distros. Other long-lifetime distros
will be assumed to ship similar software versions.
For the purposes of identifying supported software versions available on Linux,
the project will look at CentOS, Debian, Fedora, openSUSE, RHEL, SLES and
Ubuntu LTS. Other distros will be assumed to ship similar software versions.
For FreeBSD and OpenBSD, decisions will be made based on the contents of the
respective ports repository, while NetBSD will use the pkgsrc repository.
For macOS, `HomeBrew`_ will be used, although `MacPorts`_ is expected to carry
similar versions.
Windows
-------
The project supports building with current versions of the MinGW
toolchain, hosted on Linux.
The project supports building with current versions of the MinGW toolchain,
hosted on Linux (Debian/Fedora).
macOS
-----
The version of the Windows API that's currently targeted is Vista / Server
2008.
The project supports building with the two most recent versions of
macOS, with the current Homebrew package set available.
FreeBSD
-------
The project aims to support all versions which are not end of
life.
NetBSD
------
The project aims to support the most recent major version at all times.
Support for the previous major version will be dropped 2 years after the
new major version is released.
OpenBSD
-------
The project aims to support all versions which are not end of
life.
.. _HomeBrew: https://brew.sh/
.. _MacPorts: https://www.macports.org/
.. _Repology: https://repology.org/