| 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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| 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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| 3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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| 4 | <!ENTITY % general-entities SYSTEM "../general.ent">
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| 5 | %general-entities;
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| 6 | ]>
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| 7 |
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| 8 | <sect1 id="pre-architecture">
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| 9 | <?dbhtml filename="architecture.html"?>
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| 10 |
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| 11 | <title>LFS Target Architectures</title>
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| 12 |
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| 13 | <para>The target architectures of this LFS edition are ARM64 (sometimes
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| 14 | called AArch64) CPUs. On the other hand, the instructions in this book may
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| 15 | work on 32-bit ARM CPUs with some modifications. To build a system that
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| 16 | utilizes one of these CPUs, the main prerequisite, in addition to those on
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| 17 | the next page, is an existing Linux system such as an earlier LFS
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| 18 | installation, Ubuntu, Red Hat/Fedora, SuSE, or other distribution that
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| 19 | targets the architecture that you have.</para>
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| 20 |
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| 21 | <para>The build results from this LFS edition is considered a
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| 22 | <quote>pure</quote> 64-bit system. That is, it supports 64-bit executables
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| 23 | only. Building a <quote>multi-lib</quote> system requires compiling many
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| 24 | applications twice, once for a 32-bit system and once for a 64-bit system.
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| 25 | This is not directly supported in LFS because it would interfere with the
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| 26 | educational objective of providing the instructions needed for a
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| 27 | straightforward base Linux system. Some LFS/BLFS editors maintain a fork
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| 28 | of LFS for multilib, which is accessible at <ulink
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| 29 | url="https://www.linuxfromscratch.org/~thomas/multilib/index.html"/>. But
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| 30 | the multilib edition is for x86_64, and multilib is an advanced topic
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| 31 | anyway.</para>
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| 32 |
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| 33 | </sect1>
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