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b06ca361a4
git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@7970 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
57 lines
2.3 KiB
XML
57 lines
2.3 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-system-strippingagain">
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<?dbhtml filename="strippingagain.html"?>
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<title>Stripping Again</title>
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<para>If the intended user is not a programmer and does not plan to do
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any debugging on the system software, the system size can be decreased
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by about 90 MB by removing the debugging symbols from binaries and
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libraries. This causes no inconvenience other than not being able to
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debug the software fully anymore.</para>
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<para>Most people who use the command mentioned below do not
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experience any difficulties. However, it is easy to make a typo and
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render the new system unusable, so before running the
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<command>strip</command> command, it is a good idea to make a
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backup of the LFS system in its current state.</para>
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<para>Before performing the stripping, take special care to ensure that
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none of the binaries that are about to be stripped are running. If
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unsure whether the user entered chroot with the command given in
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<xref linkend="ch-system-chroot" role=","/> first exit from
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chroot:</para>
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<screen role="nodump"><userinput>logout</userinput></screen>
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<para>Then reenter it with:</para>
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<screen role="nodump"><userinput>chroot $LFS /tools/bin/env -i \
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HOME=/root TERM=$TERM PS1='\u:\w\$ ' \
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PATH=/bin:/usr/bin:/sbin:/usr/sbin \
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/tools/bin/bash --login</userinput></screen>
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<para>Now the binaries and libraries can be safely stripped:</para>
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<screen><userinput>/tools/bin/find /{,usr/}{bin,lib,sbin} -type f \
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-exec /tools/bin/strip --strip-debug '{}' ';'</userinput></screen>
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<para>A large number of files will be reported as having their file
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format not recognized. These warnings can be safely ignored. These
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warnings indicate that those files are scripts instead of
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binaries.</para>
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<para>If disk space is very tight, the
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<parameter>--strip-all</parameter> option can be used on the binaries
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in <filename class="directory">/{,usr/}{bin,sbin}</filename> to gain
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several more megabytes. Do not use this option on libraries—they will
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be destroyed.</para>
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</sect1>
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