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Gentoo Linuxは様々なアーキテクチャで利用できます。しかし、アーキテクチャとは何でしょうか?

アーキテクチャとは、同じ命令群を理解できるCPU (プロセッサ) ファミリのことです。デスクトップの世界における最も有名な2つのアーキテクチャは、x86アーキテクチャとx86_64アーキテクチャ (Gentooではamd64という表記を使います) です。しかし、他にも多くのアーキテクチャが存在します。例えば、sparcppc (PowerPCファミリ)、mipsarm……。

Gentooと同程度に汎用的なディストリビューションでは、多くのアーキテクチャをサポートしています。 そのため、サポートされているアーキテクチャごとにGentooハンドブックが提供されていることにもお気づきでしょう。 しかし、全てのユーザがその違いを認識しているわけではないので、ある種の混乱に繋がる可能性があります。 システムの一部分としてのCPUの種類や名前 (i686とかIntel Core i7のような) のみを認識している人もいます。 下記にサポートされているアーキテクチャの簡単な説明と、Gentooで用いられる略語があります。しかし、自分のシステムのアーキテクチャを知らない大抵の人は、ほんんどの場合x86またはamd64が関連します。


以下のリストでは、様々な Gentoo Linux プロジェクトでサポートされるアーキテクチャに対する高レベルの概要を説明します。ハンドブックの関連するインストールの節に進む前に、正しいアーキテクチャを選ぶことは重要です。先に進む前に、必ずCPUのアーキテクチャを確認してください。

Gentooの新規ユーザの方へ: もしCPUが5年以内のもので、製造者がIntelかAMDなら、AMD64 ハンドブック を選ぶのがおそらく正しい順路でしょう。

armarm64 はGentoo projectによってサポートされていますが、まだハンドブックが確立されていません。詳細については ARM projectbug #534376を参照してください。
Alpha Handbook
The Alpha architecture is a 64-bit architecture developed by Digital Equipment Corporation (DEC). It is still in use by some mid-range and high-end servers, but the architecture is slowly being faded out. Variants include: ES40, AlphaPC, UP1000, and Noname.
AMD64 Handbook
AMD64 is a 64-bit architecture that is compatible with the x86 architecture (and thus also known as x86_64). It was first used by AMD (under the AMD64 name) and Intel (under the EM64T name) and is now the most prominent architecture for medium and high-end desktop PCs. It is also commonly found in the server segment. Variants include: AMD Athlon 64, Opteron, Sempron, Phenom, FX, and Ryzen along with Intel Pentium 4, Core2, Core i3, i5, i7, and some Atoms.
ARM Handbook
ARM is a 32-bit architecture that is a very popular in embedded and small systems. Sub-architectures range from ARMv1 to ARMv7 (Cortex) and are often found in smart phones, tablets, hand-held consoles, end-user GPS navigation systems, etc. Variants include: StrongARM and Cortex-M.
  • There is no ARM Handbook available at this time. Please see bug #534376.
ARM64 Handbook
ARM64 is a 64-bit variant of ARM for embedded and server systems. The primary sub-architecture referred to as AArch64 (also known as ARMv8-A) is produced by a few manufacturers. AArch64 chips are seen in a variety of SoCs including developer boards, smart phones, tablets, smart TVs, etc. Variants include: ARM Holdings' Cortex-A53, A57, A72, A73 and Qualcomm's Kryo and Falkor.
  • There is no ARM64 Handbook available at this time. Please see bug #534376.
HPPA Handbook
Referred to as HPPA, the PA-RISC architecture is an instruction set developed by Hewlett-Packard and was used in their mid- and high-end server series until about 2008 (after which HP started using Intel Itanium). Variants include: HP 9000 and PA-8600.
IA64 Handbook
IA64 is a 64-bit architecture designed by Intel and used in their Intel Itanium processor series. This architecture is not compatible with x86 or x86_64 (a.k.a. amd64) and is mostly found in medium and high-end server series. Variants include: Intel Itanium.
MIPS Handbook
Developed by MIPS Technologies, the MIPS architecture comprises multiple subfamilies (called revisions) such as MIPS I, MIPS III, MIPS32, MIPS64 and more. MIPS is most common in embedded systems. Variants include: MIPS32 1074K and R16000.
PPC Handbook
PPC is a 32-bit architecture used by many Apple, IBM and Motorola processors. They are most commonly found in embedded systems. Variants include: Apple OldWorld, Apple NewWorld, generi Pegasos, Efika, older IBM iSeries and pSeries.
PPC64 Handbook
PPC64 is the 64-bit variant of the PPC architecture, popular in both embedded as well as high-end performance servers. Variants include: IBM RS/6000s, IBM pSeries, and IBM iSeries.
SPARC Handbook
The SPARC architecture is best known by its most common producers, Sun Microsystems (now Oracle) and Fujitsu. It is used in server systems although a few workstations exist as well. In Gentoo, only SPARC64-compatible CPUs are supported. Variants include: E3000, Blade 1000, and Ultra 2.
X86 Handbook
X86 is a 32-bit architecture used by CPUs that are often said to be "Intel compatible". It was until recently the most popular architecture for desktop PCs. Gentoo offers builds for i486 (supports all families) and i686 (supports Pentium and higher or compatible). Variants include: i486, i686, AMD Athlon, Intel Core, and some Intel Atoms.



もちろん可能ですが、アーキテクチャごとのレベルでこれを行うことにしました。 他の例えばパーティション作成、カーネルの選択、パッケージのインストールといった選択に関しては、単一のドキュメントで十分説明できます。


現在stage1やstage2 tarballを使用する説明はGentoo FAQにあります。stage3を使うインストールが、唯一サポートされているインストール方法です。


ハンドブックをより良くするための提案、コメント、または、アイディアは、それぞれの記事の「議論」のページを通してHandbook project に報告できます。ドキュメントは、コミュニティのために作成されており、よってコミュニティからの意見はたいへん歓迎されます。

Be aware that most decisions made while developing documentation are based on a consensus-model. It is impossible to write or structure documentation in such a way that renders every reader happy.

Those who open discussions with the goal of improving the Handbook must be able to accept a "No" as an answer. Typically "No" is used when we believe the current implementation is beneficial for the majority of readers.

In order to properly track open issues we ask you to add the {{Talk}} template to each discussion you open. Something similar to what is seen in the following example will suffice:

CODE Example open discussion
{{Talk|open|date=March 28, 2017}}
Hi, I constructively think this part of the Handbook can be enhanced in this way.
Here is an example of the code/text that will make the improvement:
(insert code or text to be improved here.)
Kind regards, --~~~~

The --~~~~ code at the end of the example inserts a dated signature when the page is saved or previewed. This code can either be typed in manually or generated by using the Signature and timestamp button in the edit toolbar. Wiki editors will refer to this as 'signing a discussion.' Please remember to sign each comment made on discussion pages.