| [3f8be484] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
|
|---|
| [aa18ac0] | 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
|
|---|
| 3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
|
|---|
| [3f8be484] | 4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
|
|---|
| 5 | %general-entities;
|
|---|
| 6 | ]>
|
|---|
| 7 |
|
|---|
| 8 | <sect1 id="ch-system-stripping">
|
|---|
| 9 | <?dbhtml filename="stripping.html"?>
|
|---|
| 10 |
|
|---|
| 11 | <title>Stripping</title>
|
|---|
| 12 |
|
|---|
| [b4f5af8] | 13 | <para os="a">If the intended user is not a programmer and does not plan to do
|
|---|
| [3f8be484] | 14 | any debugging on the system software, the system size can be decreased
|
|---|
| 15 | by about 200 MB by removing the debugging symbols from binaries and
|
|---|
| 16 | libraries. This causes no inconvenience other than not being able to
|
|---|
| 17 | debug the software fully anymore.</para>
|
|---|
| 18 |
|
|---|
| [b4f5af8] | 19 | <para os="b">Most people who use the command mentioned below do not
|
|---|
| [3f8be484] | 20 | experience any difficulties. However, it is easy to make a typo and
|
|---|
| 21 | render the new system unusable, so before running the
|
|---|
| 22 | <command>strip</command> command, it is a good idea to make a
|
|---|
| 23 | backup of the current situation.</para>
|
|---|
| 24 |
|
|---|
| [b4f5af8] | 25 | <para os="c">Before performing the stripping, take special care to ensure that
|
|---|
| [3f8be484] | 26 | none of the binaries that are about to be stripped are running. If
|
|---|
| 27 | unsure whether the user entered chroot with the command given in
|
|---|
| 28 | <xref linkend="chapter-chroot" role=","/> first exit from
|
|---|
| 29 | chroot:</para>
|
|---|
| 30 |
|
|---|
| [3a3e135] | 31 | <screen os="d" role="nodump"><userinput>logout</userinput></screen>
|
|---|
| [3f8be484] | 32 |
|
|---|
| [b4f5af8] | 33 | <para os="e">Then reenter it with:</para>
|
|---|
| [3f8be484] | 34 |
|
|---|
| [040521bc] | 35 | <screen os="f" role="nodump"><userinput>chroot ${CLFS} /tools/bin/env -i \
|
|---|
| 36 | HOME=/root TERM=${TERM} PS1='\u:\w\$ ' \
|
|---|
| [3f8be484] | 37 | PATH=/bin:/usr/bin:/sbin:/usr/sbin \
|
|---|
| 38 | /tools/bin/bash --login</userinput></screen>
|
|---|
| 39 |
|
|---|
| [b4f5af8] | 40 | <para os="g">Now the binaries and libraries can be safely stripped:</para>
|
|---|
| [3f8be484] | 41 |
|
|---|
| [b4f5af8] | 42 | <screen os="h"><userinput>/tools/bin/find /{,usr/}{bin,lib,sbin} -type f \
|
|---|
| [3f8be484] | 43 | -exec /tools/bin/strip --strip-debug '{}' ';'</userinput></screen>
|
|---|
| 44 |
|
|---|
| [b4f5af8] | 45 | <para os="i">A large number of files will be reported as having their file
|
|---|
| [3f8be484] | 46 | format not recognized. These warnings can be safely ignored. These
|
|---|
| 47 | warnings indicate that those files are scripts instead of
|
|---|
| 48 | binaries.</para>
|
|---|
| 49 |
|
|---|
| [b4f5af8] | 50 | <para os="j">If disk space is very tight, the <option>--strip-all</option>
|
|---|
| [3f8be484] | 51 | option can be used on the binaries in <filename
|
|---|
| 52 | class="directory">/{,usr/}{bin,sbin}</filename> to gain several more
|
|---|
| 53 | megabytes. Do not use this option on libraries—they will be
|
|---|
| 54 | destroyed.</para>
|
|---|
| 55 |
|
|---|
| 56 | </sect1>
|
|---|
