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Diffstat (limited to 'chapter06/strippingagain.xml')
| -rw-r--r-- | chapter06/strippingagain.xml | 38 |
1 files changed, 34 insertions, 4 deletions
diff --git a/chapter06/strippingagain.xml b/chapter06/strippingagain.xml index e0531df3e..f6c5fa2ec 100644 --- a/chapter06/strippingagain.xml +++ b/chapter06/strippingagain.xml @@ -1,24 +1,54 @@ <?xml version="1.0" encoding="ISO-8859-1"?> -<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd"> +<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [ + <!ENTITY % general-entities SYSTEM "../general.ent"> + %general-entities; +]> <sect1 id="ch-system-strippingagain"> <title>Stripping Again</title> <?dbhtml filename="strippingagain.html"?> -<para>Exit from chroot:</para> +<para>If the intended user is not a programmer and does not plan to do +any debugging on the system software, the system size can be decreased +by about 200 MB by removing the debugging symbols from binaries and +libraries. This causes no inconvenience other than not being able to +debug the software fully anymore.</para> + +<para>Most people who use the command mentioned below do not +experience any difficulties. However, it is easy to make a typo and +render the new system unusable, so before running the +<command>strip</command> command, it is a good idea to make a +backup of the current situation.</para> + +<para>Before performing the stripping, take special care to ensure that +none of the binaries that are about to be stripped are running. If +unsure whether the user entered chroot with the command given in +<xref linkend="ch-system-chroot" role=","/> first exit from +chroot:</para> <screen><userinput>logout</userinput></screen> -<para>Reenter with:</para> +<para>Then reenter it with:</para> <screen><userinput>chroot $LFS /tools/bin/env -i \ HOME=/root TERM=$TERM PS1='\u:\w\$ ' \ PATH=/bin:/usr/bin:/sbin:/usr/sbin \ /tools/bin/bash --login</userinput></screen> -<para>Strip the binaries and libraries:</para> +<para>Now the binaries and libraries can be safely stripped:</para> <screen><userinput>/tools/bin/find /{,usr/}{bin,lib,sbin} -type f \ -exec /tools/bin/strip --strip-debug '{}' ';'</userinput></screen> +<para>A large number of files will be reported as having their file +format not recognized. These warnings can be safely ignored. These +warnings indicate that those files are scripts instead of +binaries.</para> + +<para>If disk space is very tight, the +<parameter>--strip-all</parameter> option can be used on the binaries +in <filename class="directory">/{,usr/}{bin,sbin}</filename> to gain +several more megabytes. Do not use this option on libraries—they will +be destroyed.</para> + </sect1> |