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0ce9b08c10
Our support statement for Windows currently talks about "Vista / Server 2008" - which is related to the API of Windows, and this is not easy to understand for the non-technical users. Additionally, glib sets the _WIN32_WINNT macro to 0x0601 already, which indicates the Windows 7 API, so QEMU effectively depends on the Windows 7 API, too. Thus let's bump the _WIN32_WINNT setting in QEMU to the same level as glib uses and adjust our support statement in the documentation to something similar that we're using for Linux and the *BSD systems (i.e. only the two most recent versions), which should hopefully be easier to understand for the users now. And since we're nowadays also compile-testing QEMU with MSYS2 on Windows itself, I think we could mention this build environment here, too. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/880 Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Stefan Weil <sw@weilnetz.de> Message-Id: <20220513063958.1181443-1-thuth@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
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.. _Supported-build-platforms:
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Supported build platforms
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=========================
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QEMU aims to support building and executing on multiple host OS
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platforms. This appendix outlines which platforms are the major build
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targets. These platforms are used as the basis for deciding upon the
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minimum required versions of 3rd party software QEMU depends on. The
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supported platforms are the targets for automated testing performed by
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the project when patches are submitted for review, and tested before and
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after merge.
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If a platform is not listed here, it does not imply that QEMU won't
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work. If an unlisted platform has comparable software versions to a
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listed platform, there is every expectation that it will work. Bug
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reports are welcome for problems encountered on unlisted platforms
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unless they are clearly older vintage than what is described here.
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Note that when considering software versions shipped in distros as
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support targets, QEMU considers only the version number, and assumes the
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features in that distro match the upstream release with the same
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version. In other words, if a distro backports extra features to the
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software in their distro, QEMU upstream code will not add explicit
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support for those backports, unless the feature is auto-detectable in a
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manner that works for the upstream releases too.
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The `Repology`_ site is a useful resource to identify
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currently shipped versions of software in various operating systems,
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though it does not cover all distros listed below.
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Supported host architectures
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----------------------------
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Those hosts are officially supported, with various accelerators:
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.. list-table::
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:header-rows: 1
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* - CPU Architecture
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- Accelerators
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* - Arm
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- kvm (64 bit only), tcg, xen
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* - MIPS
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- kvm, tcg
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* - PPC
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- kvm, tcg
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* - RISC-V
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- tcg
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* - s390x
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- kvm, tcg
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* - SPARC
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- tcg
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* - x86
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- hax, hvf (64 bit only), kvm, nvmm, tcg, whpx (64 bit only), xen
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Other host architectures are not supported. It is possible to build QEMU system
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emulation on an unsupported host architecture using the configure
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``--enable-tcg-interpreter`` option to enable the TCI support, but note that
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this is very slow and is not recommended for normal use. QEMU user emulation
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requires host-specific support for signal handling, therefore TCI won't help
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on unsupported host architectures.
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Non-supported architectures may be removed in the future following the
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:ref:`deprecation process<Deprecated features>`.
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Linux OS, macOS, FreeBSD, NetBSD, OpenBSD
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-----------------------------------------
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The project aims to support the most recent major version at all times. Support
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for the previous major version will be dropped 2 years after the new major
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version is released or when the vendor itself drops support, whichever comes
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first. In this context, third-party efforts to extend the lifetime of a distro
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are not considered, even when they are endorsed by the vendor (eg. Debian LTS).
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For the purposes of identifying supported software versions available on Linux,
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the project will look at CentOS, Debian, Fedora, openSUSE, RHEL, SLES and
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Ubuntu LTS. Other distros will be assumed to ship similar software versions.
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For FreeBSD and OpenBSD, decisions will be made based on the contents of the
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respective ports repository, while NetBSD will use the pkgsrc repository.
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For macOS, `Homebrew`_ will be used, although `MacPorts`_ is expected to carry
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similar versions.
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Windows
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-------
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The project aims to support the two most recent versions of Windows that are
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still supported by the vendor. The minimum Windows API that is currently
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targeted is "Windows 7", so theoretically the QEMU binaries can still be run
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on older versions of Windows, too. However, such old versions of Windows are
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not tested anymore, so it is recommended to use one of the latest versions of
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Windows instead.
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The project supports building QEMU with current versions of the MinGW
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toolchain, either hosted on Linux (Debian/Fedora) or via MSYS2 on Windows.
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.. _Homebrew: https://brew.sh/
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.. _MacPorts: https://www.macports.org/
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.. _Repology: https://repology.org/
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