source: chapter05/glibc.xml@ 5bf238b

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Last change on this file since 5bf238b was 5bf238b, checked in by Bruce Dubbs <bdubbs@…>, 6 years ago

Update to mpfr-3.1.4.
Update to linux-4.4.4.
Update to pkg-config-0.29.1.
Update to tcl-6.8.5.
Remove --disable-profile from Glibc instructions.
Create /var/log/faillog.
Remove --enable-obsolete-rpc from Chapter 5 glibc

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@11034 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

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1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3 "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
4 <!ENTITY % general-entities SYSTEM "../general.ent">
5 %general-entities;
6]>
7
8<sect1 id="ch-tools-glibc" role="wrap">
9 <?dbhtml filename="glibc.html"?>
10
11 <sect1info condition="script">
12 <productname>glibc</productname>
13 <productnumber>&glibc-version;</productnumber>
14 <address>&glibc-url;</address>
15 </sect1info>
16
17 <title>Glibc-&glibc-version;</title>
18
19 <indexterm zone="ch-tools-glibc">
20 <primary sortas="a-Glibc">Glibc</primary>
21 <secondary>tools</secondary>
22 </indexterm>
23
24 <sect2 role="package">
25 <title/>
26
27 <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
28 href="../chapter06/glibc.xml"
29 xpointer="xpointer(/sect1/sect2[1]/para[1])"/>
30
31 <segmentedlist>
32 <segtitle>&buildtime;</segtitle>
33 <segtitle>&diskspace;</segtitle>
34
35 <seglistitem>
36 <seg>&glibc-ch5-sbu;</seg>
37 <seg>&glibc-ch5-du;</seg>
38 </seglistitem>
39 </segmentedlist>
40
41 </sect2>
42
43 <sect2 role="installation">
44 <title>Installation of Glibc</title>
45<!--
46 <para>First fix a build problem that affects i386 systems:</para>
47
48<screen><userinput remap="pre">patch -Np1 -i ../&glibc-upstream-patch;</userinput></screen>
49-->
50 <para>The Glibc documentation recommends building Glibc
51 in a dedicated build directory:</para>
52
53<screen><userinput remap="pre">mkdir -v build
54cd build</userinput></screen>
55
56 <para>Next, prepare Glibc for compilation:</para>
57
58<screen><userinput remap="configure">../configure \
59 --prefix=/tools \
60 --host=$LFS_TGT \
61 --build=$(../scripts/config.guess) \
62 --enable-kernel=&min-kernel; \
63 --with-headers=/tools/include \
64 libc_cv_forced_unwind=yes \
65 libc_cv_ctors_header=yes \
66 libc_cv_c_cleanup=yes</userinput></screen>
67
68 <variablelist>
69 <title>The meaning of the configure options:</title>
70
71 <varlistentry>
72 <term><parameter>--host=$LFS_TGT, --build=$(../scripts/config.guess)</parameter></term>
73 <listitem>
74 <para>The combined effect of these switches is that Glibc's build system
75 configures itself to cross-compile, using the cross-linker and
76 cross-compiler in <filename class="directory">/tools</filename>.</para>
77 </listitem>
78 </varlistentry>
79<!--
80 <varlistentry>
81 <term><parameter>- -disable-profile</parameter></term>
82 <listitem>
83 <para>This builds the libraries without profiling information. Omit
84 this option if profiling on the temporary tools is necessary.</para>
85 </listitem>
86 </varlistentry>
87-->
88 <varlistentry>
89 <term><parameter>--enable-kernel=&min-kernel;</parameter></term>
90 <listitem>
91 <para>This tells Glibc to compile the library with support
92 for &min-kernel; and later Linux kernels. Workarounds for older
93 kernels are not enabled.</para>
94 </listitem>
95 </varlistentry>
96<!--
97 <varlistentry>
98 <term><parameter>- -enable-obsolete-rpc</parameter></term>
99 <listitem>
100 <para>This installs NIS and RPC related headers that are not
101 installed by default. They are required to build GCC and by
102 several BLFS packages.</para>
103 </listitem>
104 </varlistentry>
105-->
106 <varlistentry>
107 <term><parameter>--with-headers=/tools/include</parameter></term>
108 <listitem>
109 <para>This tells Glibc to compile itself against the headers recently
110 installed to the tools directory, so that it knows exactly what
111 features the kernel has and can optimize itself accordingly.</para>
112 </listitem>
113 </varlistentry>
114
115 <varlistentry>
116 <term><parameter>libc_cv_forced_unwind=yes</parameter></term>
117 <listitem>
118 <para>The linker installed during
119 <xref linkend="ch-tools-binutils-pass1"/> was cross-compiled and as
120 such cannot be used until Glibc has been installed. This means that
121 the configure test for force-unwind support will fail, as it relies on
122 a working linker. The libc_cv_forced_unwind=yes variable is passed in
123 order to inform <command>configure</command> that force-unwind
124 support is available without it having to run the test.</para>
125 </listitem>
126 </varlistentry>
127 <varlistentry>
128 <term><parameter>libc_cv_c_cleanup=yes</parameter></term>
129 <listitem>
130 <para>Similarly, we pass libc_cv_c_cleanup=yes through to the
131 <command>configure</command> script so that the test is skipped and C
132 cleanup handling support is configured.</para>
133 </listitem>
134 </varlistentry>
135 <varlistentry>
136 <term><parameter>libc_cv_ctors_header=yes</parameter></term>
137 <listitem>
138 <para>Similarly, we pass libc_cv_ctors_header=yes through to the
139 <command>configure</command> script so that the test is skipped and
140 gcc constructor support is configured.</para>
141 </listitem>
142 </varlistentry>
143
144 </variablelist>
145
146 <para>During this stage the following warning might appear:</para>
147
148 <blockquote>
149<screen><computeroutput>configure: WARNING:
150*** These auxiliary programs are missing or
151*** incompatible versions: msgfmt
152*** some features will be disabled.
153*** Check the INSTALL file for required versions.</computeroutput></screen>
154 </blockquote>
155
156 <para>The missing or incompatible <command>msgfmt</command> program is
157 generally harmless. This <command>msgfmt</command> program is part of the
158 Gettext package which the host distribution should provide.</para>
159
160 <note><para>There have been reports that this package may fail when
161 building as a "parallel make". If this occurs, rerun the make command
162 with a "-j1" option.</para></note>
163
164 <para>Compile the package:</para>
165
166<screen><userinput remap="make">make</userinput></screen>
167
168<!--
169 <para>This package does come with a test suite, however, it cannot be
170 run at this time because we do not have a C++ compiler yet.</para>
171
172 <note>
173 <para>The test suite also requires locale data to be installed in order to run
174 successfully. Locale data provides information to the system regarding
175 such things as the date, time, and currency formats accepted and output by
176 system utilities. If the test suites are not being run in this chapter
177 (as per the recommendation), there is no need to install the locales now.
178 The appropriate locales will be installed in the next chapter. To install
179 the Glibc locales anyway, use instructions from <xref
180 linkend="ch-system-glibc" role="."/></para>
181 </note>
182-->
183 <para>Install the package:</para>
184
185<screen><userinput remap="install">make install</userinput></screen>
186
187 <caution>
188 <para>At this point, it is imperative to stop and ensure that the basic
189 functions (compiling and linking) of the new toolchain are working as
190 expected. To perform a sanity check, run the following commands:</para>
191
192<screen><userinput>echo 'int main(){}' &gt; dummy.c
193$LFS_TGT-gcc dummy.c
194readelf -l a.out | grep ': /tools'</userinput></screen>
195
196 <para>If everything is working correctly, there should be no errors,
197 and the output of the last command will be of the form:</para>
198
199<screen><computeroutput>[Requesting program interpreter: /tools/lib/ld-linux.so.2]</computeroutput></screen>
200
201 <para>Note that for 64-bit machines, the interpreter name will be
202 <filename>/tools/lib64/ld-linux-x86-64.so.2</filename>.</para>
203
204 <para>If the output is not shown as above or there was no output at all,
205 then something is wrong. Investigate and retrace the steps to find out
206 where the problem is and correct it. This issue must be resolved before
207 continuing on.</para>
208
209 <para>Once all is well, clean up the test files:</para>
210
211<screen><userinput>rm -v dummy.c a.out</userinput></screen>
212
213 </caution>
214
215 <note><para>Building Binutils in the section after next will serve as an
216 additional check that the toolchain has been built properly. If Binutils
217 fails to build, it is an indication that something has gone wrong with the
218 previous Binutils, GCC, or Glibc installations.</para></note>
219
220 </sect2>
221
222 <sect2 role="content">
223 <title/>
224
225 <para>Details on this package are located in
226 <xref linkend="contents-glibc" role="."/></para>
227
228 </sect2>
229
230</sect1>
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