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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 support for those backports, unless the feature is auto-detectable in a
manner that works for the upstream releases too. 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, currently shipped versions of software in various operating systems,
though it does not cover all distros listed below. 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 The project aims to support the most recent major version at all times. Support
will aim to support all versions that are not end of life by their for the previous major version will be dropped 2 years after the new major
respective vendors. For the purposes of identifying supported software version is released or when the vendor itself drops support, whichever comes
versions, the project will look at Fedora, Ubuntu, and openSUSE distros. first. In this context, third-party efforts to extend the lifetime of a distro
Other short- lifetime distros will be assumed to ship similar software are not considered, even when they are endorsed by the vendor (eg. Debian LTS).
versions.
For distributions with long-lifetime releases, the project will aim to For the purposes of identifying supported software versions available on Linux,
support the most recent major version at all times. Support for the the project will look at CentOS, Debian, Fedora, openSUSE, RHEL, SLES and
previous major version will be dropped 2 years after the new major Ubuntu LTS. Other distros will be assumed to ship similar software versions.
version is released, or when it reaches "end of life". For the purposes
of identifying supported software versions, the project will look at For FreeBSD and OpenBSD, decisions will be made based on the contents of the
RHEL, Debian, Ubuntu LTS, and SLES distros. Other long-lifetime distros respective ports repository, while NetBSD will use the pkgsrc repository.
will be assumed to ship similar software versions.
For macOS, `HomeBrew`_ will be used, although `MacPorts`_ is expected to carry
similar versions.
Windows Windows
------- -------
The project supports building with current versions of the MinGW The project supports building with current versions of the MinGW toolchain,
toolchain, hosted on Linux. 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 .. _HomeBrew: https://brew.sh/
macOS, with the current Homebrew package set available. .. _MacPorts: https://www.macports.org/
.. _Repology: https://repology.org/
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.