source: final-system/common/stripping.xml @ 9bfef72

Last change on this file since 9bfef72 was 9bfef72, checked in by Jim Gifford <clfs@…>, 18 years ago

r2699@server (orig r1315): manuel | 2006-03-23 11:35:03 -0800
Added a few nodump attributes to final-system chapter files.

  • Property mode set to 100644
File size: 2.3 KB
Line 
1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
3  "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
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
13  <para os="a">If the intended user is not a programmer and does not plan to do
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
19  <para os="b">Most people who use the command mentioned below do not
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
25  <para os="c">Before performing the stripping, take special care to ensure that
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
31<screen os="d" role="nodump"><userinput>logout</userinput></screen>
32
33    <para os="e">Then reenter it with:</para>
34
35<screen os="f" role="nodump"><userinput>chroot $LFS /tools/bin/env -i \
36    HOME=/root TERM=$TERM PS1='\u:\w\$ ' \
37    PATH=/bin:/usr/bin:/sbin:/usr/sbin \
38    /tools/bin/bash --login</userinput></screen>
39
40    <para os="g">Now the binaries and libraries can be safely stripped:</para>
41
42<screen os="h"><userinput>/tools/bin/find /{,usr/}{bin,lib,sbin} -type f \
43   -exec /tools/bin/strip --strip-debug '{}' ';'</userinput></screen>
44
45    <para os="i">A large number of files will be reported as having their file
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
50    <para os="j">If disk space is very tight, the <option>--strip-all</option>
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&mdash;they will be
54    destroyed.</para>
55
56</sect1>
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