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96 строки
4.2 KiB
ReStructuredText
96 строки
4.2 KiB
ReStructuredText
Supported build targets
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=======================
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.. role:: strikethrough
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There are three tiers of **supported Firefox build targets** at this
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time. These tiers represent the shared engineering priorities of the
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Mozilla project.
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.. note::
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Sheriffs are in charge of monitoring the tree. Their definition for tiers
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is for automation jobs, which tells a developer what is expected of them when
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they land code. This document is about the tiers of supported build targets,
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which tells a person compiling/using Firefox what they can expect from Mozilla.
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See the `job tier definition <https://wiki.mozilla.org/Sheriffing/Job_Visibility_Policy#Overview_of_the_Job_Visibility_Tiers>`__ for more information.
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.. _tier-1:
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The term **"Tier-1 platform"** refers to those platforms - CPU
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architectures and operating systems - that are the primary focus of
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Firefox development efforts. Tier-1 platforms are fully supported by
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Mozilla's `continuous integration processes <https://treeherder.mozilla.org/>`__ and the
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:ref:`Try Server`. Any proposed change to Firefox on these
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platforms that results in build failures, test failures, performance
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regressions or other major problems **will be reverted immediately**.
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The **Tier-1 Firefox platforms** and their supported compilers are:
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- Android on Linux x86, x86-64, ARMv7 and ARMv8-A (clang)
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- Linux/x86 and x86-64 (gcc and clang)
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- macOS 10.12 and later on x86-64 and AArch64 (clang)
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- Windows/x86, x86-64 and AArch64 (clang-cl)
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Prior to Firefox 63, Windows/x86 and Windows/x86-64 relied on the MSVC
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compiler; from **Firefox 63 onward MSVC is not supported**. Older 32-bit
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x86 CPUs without SSE2 instructions such as the Pentium III and Athlon XP
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are also **not considered Tier-1 platforms, and are not supported**.
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Note also that while Windows/x86 and ARM/AArch64 are supported *as build
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targets*, it is not possible to build Firefox *on* Windows/x86 or
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Windows/AArch64 systems.
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.. _tier-2:
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**Tier-2 platforms** are actively maintained by the Mozilla community,
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though with less rigorous requirements. Proposed changes resulting in
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breakage or regressions limited to these platforms **may not immediately
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result in reversion**. However, developers who break these platforms are
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expected to work with platform maintainers to fix problems, and **may be
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required to revert their changes** if a fix cannot be found.
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The **Tier-2 Firefox platforms** and their supported compilers are:
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- Linux/AArch64 (clang)
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- Windows/x86 (mingw-clang) - maintained by Tom Ritter and Jacek Caban
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-
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- *Note that some features of this platform are disabled, as they
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require MS COM or the w32api project doesn't expose the necessary
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Windows APIs.*
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.. _tier-3:
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**Tier-3 platforms** have a maintainer or community which attempt to
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keep the platform working. These platforms are **not supported by our
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continuous integration processes**, and **Mozilla does not routinely
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test on these platforms**, nor do we block further development on the
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outcomes of those tests.
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At any given time a Firefox built from mozilla-central for these
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platforms may or may not work correctly or build at all.
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**Tier-3 Firefox platforms** include:
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- Linux on various CPU architectures including ARM variants not listed
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above, PowerPC, and x86 CPUs without SSE2 support - maintained by
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various Linux distributions
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- FreeBSD/x86, x86-64, Aarch64 (clang) - maintained by Jan Beich
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- OpenBSD/x86, x86-64 (clang) - maintained by Landry Breuil
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- NetBSD/x86-64 (gcc) - maintained by David Laight
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- Solaris/x86-64, sparc64 (gcc) - maintained by Petr Sumbera
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- :strikethrough:`Windows/x86-64 (mingw-gcc)` - Unsupported due to
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requirements for clang-bindgen
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If you're filing a bug against Firefox on a Tier-3 platform (or any
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combination of OS, CPU and compiler not listed above) please bear in
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mind that Mozilla developers do not reliably have access to non-Tier-1
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platforms or build environments. To be actionable bug reports against
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non-Tier-1 platforms should include as much information as possible to
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help the owner of the bug determine the cause of the problem and the
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proper solution. If you can provide a patch, a regression range or
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assist in verifying that the developer's patches work for your platform,
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that would help a lot towards getting your bugs fixed and checked into
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the tree.
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