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e70bf8f4f4
We'll use nproc for setting MAKEFLAGS and TESTSUITEFLAGS. And if nproc is not available, we'll end up with "MAKEFLAGS=-j" which is very dangerous because it allows make to spawn infinite number of jobs. Check it early. The nproc program is added in Coreutils 8.1 so we need to bump the minimal version.
276 lines
9.2 KiB
XML
276 lines
9.2 KiB
XML
<?xml version="1.0" encoding="ISO-8859-1"?>
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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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<!ENTITY % general-entities SYSTEM "../general.ent">
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%general-entities;
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]>
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<sect1 id="ch-partitioning-hostreqs" xreflabel="Host System Requirements">
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<?dbhtml filename="hostreqs.html"?>
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<title>Host System Requirements</title>
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<sect2>
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<title>Hardware</title>
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<para>The LFS editors recommend that the system CPU have at least
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four cores and that the system have at least 8 GB of memory.
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Older systems that do not meet these requirements will still work,
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but the time to build packages will be significantly longer
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than documented.
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</para>
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</sect2>
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<sect2>
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<title>Software</title>
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<para>Your host system should have the following software with the
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minimum versions indicated. This should not be an issue for most
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modern Linux distributions. Also note that many distributions will
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place software headers into separate packages, often in the form of
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<quote><package-name>-devel</quote> or
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<quote><package-name>-dev</quote>. Be sure to install those if
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your distribution provides them.</para>
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<para>Earlier versions of the listed software packages may work, but have
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not been tested.</para>
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<itemizedlist spacing="compact">
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<listitem>
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<para><emphasis role="strong">Bash-3.2</emphasis> (/bin/sh
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should be a symbolic or hard link to bash)</para>
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</listitem>
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<listitem>
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<para><emphasis role="strong">Binutils-2.13.1</emphasis> (Versions
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greater than &binutils-version; are not recommended as they have
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not been tested)</para>
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</listitem>
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<listitem>
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<para><emphasis role="strong">Bison-2.7</emphasis> (/usr/bin/yacc
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should be a link to bison or a small script that executes bison)</para>
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</listitem>
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<!-- In Coreutils-8.1 the nproc program is added. -->
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<listitem>
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<para><emphasis role="strong">Coreutils-8.1</emphasis></para>
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</listitem>
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<listitem>
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<para><emphasis role="strong">Diffutils-2.8.1</emphasis></para>
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</listitem>
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<listitem>
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<para><emphasis role="strong">Findutils-4.2.31</emphasis></para>
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</listitem>
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<listitem>
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<para><emphasis role="strong">Gawk-4.0.1</emphasis> (/usr/bin/awk
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should be a link to gawk)</para>
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</listitem>
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<listitem>
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<!-- Pass 1 GCC FTBFS with GCC-5.1 because of
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https://gcc.gnu.org/PR65801. -->
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<para><emphasis role="strong">GCC-5.2</emphasis> including the C++
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compiler, <command>g++</command> (Versions greater than &gcc-version; are
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not recommended as they have not been tested). C and C++ standard
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libraries (with headers) must also be present so the C++ compiler can
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build hosted programs</para>
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</listitem>
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<listitem>
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<para><emphasis role="strong">Grep-2.5.1a</emphasis></para>
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</listitem>
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<listitem>
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<para><emphasis role="strong">Gzip-1.3.12</emphasis></para>
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</listitem>
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<listitem>
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<para><emphasis role="strong">Linux Kernel-&min-kernel;</emphasis></para>
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<para>The reason for the kernel version requirement is that we specify
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that version when building <application>glibc</application> in
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<xref linkend="chapter-cross-tools"/> and
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<xref linkend="chapter-building-system"/>, so the workarounds for
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older kernels are not enabled and the compiled
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<application>glibc</application> is slightly faster and smaller.
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As at June 2023, &min-kernel; is the oldest kernel release still
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supported by the kernel developers.</para>
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<para>If the host kernel is earlier than &min-kernel; you will need to replace
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the kernel with a more up-to-date version. There are two ways
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you can go about this. First, see if your Linux vendor provides a &min-kernel;
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or later kernel package. If so, you may wish to install it. If your
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vendor doesn't offer an acceptable kernel package, or you would prefer not to
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install it, you can compile a kernel yourself. Instructions for
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compiling the kernel and configuring the boot loader (assuming the host
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uses GRUB) are located in <xref linkend="chapter-bootable"/>.</para>
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<para>We require the host kernel to support UNIX 98 pseudo terminal
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(PTY). It should be enabled on all desktop or server distros shipping
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Linux &min-kernel; or a newer kernel. If you are building a custom
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host kernel, ensure <option>CONFIG_UNIX98_PTYS</option> is set to
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<literal>y</literal> in the kernel configuration.</para>
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</listitem>
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<listitem>
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<para><emphasis role="strong">M4-1.4.10</emphasis></para>
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</listitem>
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<listitem>
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<para><emphasis role="strong">Make-4.0</emphasis></para>
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</listitem>
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<listitem>
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<para><emphasis role="strong">Patch-2.5.4</emphasis></para>
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</listitem>
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<listitem>
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<para><emphasis role="strong">Perl-5.8.8</emphasis></para>
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</listitem>
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<listitem>
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<para><emphasis role="strong">Python-3.4</emphasis></para>
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</listitem>
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<listitem>
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<para><emphasis role="strong">Sed-4.1.5</emphasis></para>
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</listitem>
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<listitem>
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<para><emphasis role="strong">Tar-1.22</emphasis></para>
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</listitem>
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<listitem>
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<para><emphasis role="strong">Texinfo-5.0</emphasis></para>
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</listitem>
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<listitem>
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<para><emphasis role="strong">Xz-5.0.0</emphasis></para>
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</listitem>
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</itemizedlist>
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<important>
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<para>Note that the symlinks mentioned above are required to build an LFS
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system using the instructions contained within this book. Symlinks that
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point to other software (such as dash, mawk, etc.) may work, but are not
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tested or supported by the LFS development team, and may require either
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deviation from the instructions or additional patches to some
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packages.</para>
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</important>
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<!-- Use an empty sect2 element to prevent a pdf warning. -->
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<bridgehead renderas="sect2"
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id="version-check"
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xreflabel="Host System Requirements">
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</bridgehead>
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<!--<title> </title>-->
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<para >To see whether your host system has all the appropriate versions, and
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the ability to compile programs, run the following commands:</para>
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<screen role="nodump"><?dbfo keep-together="auto"?><userinput>cat > version-check.sh << "EOF"
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<literal>#!/bin/bash
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# A script to list version numbers of critical development tools
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# If you have tools installed in other directories, adjust PATH here AND
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# in ~lfs/.bashrc (section 4.4) as well.
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LC_ALL=C
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PATH=/usr/bin:/bin
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bail() { echo "FATAL: $1"; exit 1; }
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grep --version > /dev/null 2> /dev/null || bail "grep does not work"
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sed '' /dev/null || bail "sed does not work"
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sort /dev/null || bail "sort does not work"
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ver_check()
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{
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if ! type -p $2 &>/dev/null
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then
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echo "ERROR: Cannot find $2 ($1)"; return 1;
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fi
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v=$($2 --version 2>&1 | grep -E -o '[0-9]+\.[0-9\.]+[a-z]*' | head -n1)
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if printf '%s\n' $3 $v | sort --version-sort --check &>/dev/null
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then
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printf "OK: %-9s %-6s >= $3\n" "$1" "$v"; return 0;
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else
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printf "ERROR: %-9s is TOO OLD ($3 or later required)\n" "$1";
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return 1;
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fi
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}
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ver_kernel()
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{
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kver=$(uname -r | grep -E -o '^[0-9\.]+')
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if printf '%s\n' $1 $kver | sort --version-sort --check &>/dev/null
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then
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printf "OK: Linux Kernel $kver >= $1\n"; return 0;
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else
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printf "ERROR: Linux Kernel ($kver) is TOO OLD ($1 or later required)\n" "$kver";
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return 1;
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fi
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}
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# Coreutils first because --version-sort needs Coreutils >= 7.0
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ver_check Coreutils sort 8.1 || bail "Coreutils too old, stop"
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ver_check Bash bash 3.2
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ver_check Binutils ld 2.13.1
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ver_check Bison bison 2.7
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ver_check Diffutils diff 2.8.1
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ver_check Findutils find 4.2.31
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ver_check Gawk gawk 4.0.1
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ver_check GCC gcc 5.2
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ver_check "GCC (C++)" g++ 5.2
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ver_check Grep grep 2.5.1a
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ver_check Gzip gzip 1.3.12
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ver_check M4 m4 1.4.10
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ver_check Make make 4.0
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ver_check Patch patch 2.5.4
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ver_check Perl perl 5.8.8
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ver_check Python python3 3.4
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ver_check Sed sed 4.1.5
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ver_check Tar tar 1.22
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ver_check Texinfo texi2any 5.0
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ver_check Xz xz 5.0.0
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ver_kernel &min-kernel;
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if mount | grep -q 'devpts on /dev/pts' && [ -e /dev/ptmx ]
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then echo "OK: Linux Kernel supports UNIX 98 PTY";
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else echo "ERROR: Linux Kernel does NOT support UNIX 98 PTY"; fi
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alias_check() {
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if $1 --version 2>&1 | grep -qi $2
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then printf "OK: %-4s is $2\n" "$1";
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else printf "ERROR: %-4s is NOT $2\n" "$1"; fi
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}
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echo "Aliases:"
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alias_check awk GNU
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alias_check yacc Bison
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alias_check sh Bash
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echo "Compiler check:"
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if printf "int main(){}" | g++ -x c++ -
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then echo "OK: g++ works";
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else echo "ERROR: g++ does NOT work"; fi
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rm -f a.out
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if [ "$(nproc)" = "" ]; then
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echo "ERROR: nproc is not available or it produces empty output"
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else
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echo "OK: nproc reports $(nproc) logical cores are available"
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fi</literal>
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EOF
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bash version-check.sh</userinput></screen>
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</sect2>
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</sect1>
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