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authorPierre Labastie <pieere@linuxfromscratch.org>2020-06-08 07:49:58 +0000
committerPierre Labastie <pieere@linuxfromscratch.org>2020-06-08 07:49:58 +0000
commit069c0ecc1ae0422f98f907c3c7f8fe7e49bd9f1f (patch)
tree0e8f5988a86beabe11984d5d9040be553cfbf994 /chapter05/stripping.xml
parent784dc13f86cceda51ded588831d429a574808720 (diff)
Remove unneeded files in chapter 5
git-svn-id: http://svn.linuxfromscratch.org/LFS/branches/cross2@11900 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
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-<?xml version="1.0" encoding="ISO-8859-1"?>
-<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
- "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
- <!ENTITY % general-entities SYSTEM "../general.ent">
- %general-entities;
-]>
-
-<sect1 id="ch-tools-stripping">
- <?dbhtml filename="stripping.html"?>
-
- <title>Stripping</title>
-
- <para>The steps in this section are optional, but if the LFS partition is
- rather small, it is beneficial to learn that unnecessary items can be removed.
- The executables and libraries built so far contain about 70 MB of unneeded
- debugging symbols. Remove those symbols with:</para>
-
-<screen><userinput>$LFS_TGT-strip --strip-debug $LFS/usr/lib/*
-$LFS_TGT-strip --strip-unneeded $LFS/usr/{,s}bin/*</userinput></screen>
-
- <para>These commands will skip a number of files, reporting that it does not
- recognize their file format. Most of these are scripts instead of binaries.
- Note that we use the <command>strip</command> program built in
- <quote>Binutils pass 1</quote>, since it is the one that knows how to strip
- our cross-compiled programs.</para>
-<!-- Normally, the host "strip" could be used too, since it is actually the
-same computer. But Some old versions of binutils may generate buggy crt1.o
-and the like, because they do not know about recently introduced symbol
-types. For more details,
-see https://sourceware.org/bugzilla/show_bug.cgi?id=22875-->
-
- <para>Take care <emphasis>not</emphasis> to use
- <parameter>--strip-unneeded</parameter> on the libraries. The static
- ones would be destroyed and the toolchain packages would need to be
- built all over again.</para>
-
- <para>To save more, remove the documentation:</para>
-
-<screen><userinput>rm -rf $LFS/usr/{,share}/{info,man,doc}</userinput></screen>
-
- <para>The libtool .la files are only useful when linking with static
- libraries. They are unneeded, and potentially harmful, when using dynamic
- shared libraries, specially when using also non-autotools build systems.
- Remove those files now:</para>
-
-<screen><userinput>find $LFS/usr/{lib,libexec} -name \*.la -delete</userinput></screen>
-
- <para>At this point, you should have at least 3 GB of free space in
- <envar>$LFS</envar> that can be used to build and install Glibc and Gcc in
- the next phase. If you can build and install Glibc, you can build and install
- the rest too.</para>
-
-</sect1>