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/2003/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>Though not mandatory in this chapter, if you plan on running the test
|
---|
47 | suite, you should apply the following patches:</para>
|
---|
48 |
|
---|
49 | <screen><userinput remap="pre">patch -Np1 -i &glibc-iconv-test-fixes-patch; &&
|
---|
50 | patch -Np1 -i &glibc-ildoubl-test-fix-patch;</userinput></screen>
|
---|
51 |
|
---|
52 | <para>The Glibc documentation recommends building Glibc outside of the source
|
---|
53 | directory in a dedicated build directory:</para>
|
---|
54 |
|
---|
55 | <screen><userinput remap="pre">mkdir -v ../glibc-build
|
---|
56 | cd ../glibc-build</userinput></screen>
|
---|
57 |
|
---|
58 | <para>Because Glibc no longer supports i386, its developers say to use the
|
---|
59 | compiler flag <parameter>-march=i486</parameter> when building it for x86
|
---|
60 | machines. There are several ways to accomplish that, but testing shows that
|
---|
61 | the flag is best placed inside the build variable <quote>CFLAGS</quote>.
|
---|
62 | Instead of overriding completely what Glibc's internal build system uses
|
---|
63 | for CFLAGS, append the new flag to the existing contents of CFLAGS by
|
---|
64 | making use of the special file <filename>configparms</filename>. The
|
---|
65 | -mtune=native flag is also necessary to reset a reasonable value for -mtune
|
---|
66 | that is changed when setting -march.</para>
|
---|
67 |
|
---|
68 | <screen><userinput remap="configure">echo "CFLAGS += -march=i486 -mtune=native" > configparms</userinput></screen>
|
---|
69 |
|
---|
70 | <para>Next, prepare Glibc for compilation:</para>
|
---|
71 |
|
---|
72 | <screen><userinput remap="configure">../glibc-&glibc-version;/configure --prefix=/tools \
|
---|
73 | --disable-profile --enable-add-ons \
|
---|
74 | --enable-kernel=2.6.0 --with-binutils=/tools/bin \
|
---|
75 | --without-gd --with-headers=/tools/include \
|
---|
76 | --without-selinux</userinput></screen>
|
---|
77 |
|
---|
78 | <variablelist>
|
---|
79 | <title>The meaning of the configure options:</title>
|
---|
80 |
|
---|
81 | <varlistentry>
|
---|
82 | <term><parameter>--disable-profile</parameter></term>
|
---|
83 | <listitem>
|
---|
84 | <para>This builds the libraries without profiling information. Omit
|
---|
85 | this option if profiling on the temporary tools is necessary.</para>
|
---|
86 | </listitem>
|
---|
87 | </varlistentry>
|
---|
88 |
|
---|
89 | <varlistentry>
|
---|
90 | <term><parameter>--enable-add-ons</parameter></term>
|
---|
91 | <listitem>
|
---|
92 | <para>This tells Glibc to use the NPTL add-on as its threading
|
---|
93 | library.</para>
|
---|
94 | </listitem>
|
---|
95 | </varlistentry>
|
---|
96 |
|
---|
97 | <varlistentry>
|
---|
98 | <term><parameter>--enable-kernel=2.6.0</parameter></term>
|
---|
99 | <listitem>
|
---|
100 | <para>This tells Glibc to compile the library with support
|
---|
101 | for 2.6.x Linux kernels.</para>
|
---|
102 | </listitem>
|
---|
103 | </varlistentry>
|
---|
104 |
|
---|
105 | <varlistentry>
|
---|
106 | <term><parameter>--with-binutils=/tools/bin</parameter></term>
|
---|
107 | <listitem>
|
---|
108 | <para>While not required, this switch ensures that there are
|
---|
109 | no errors pertaining to which Binutils programs get used during the
|
---|
110 | Glibc build.</para>
|
---|
111 | </listitem>
|
---|
112 | </varlistentry>
|
---|
113 |
|
---|
114 | <varlistentry>
|
---|
115 | <term><parameter>--without-gd</parameter></term>
|
---|
116 | <listitem>
|
---|
117 | <para>This prevents the build of the <command>memusagestat</command>
|
---|
118 | program, which insists on linking against the host's libraries
|
---|
119 | (libgd, libpng, libz, etc.).</para>
|
---|
120 | </listitem>
|
---|
121 | </varlistentry>
|
---|
122 |
|
---|
123 | <varlistentry>
|
---|
124 | <term><parameter>--with-headers=/tools/include</parameter></term>
|
---|
125 | <listitem>
|
---|
126 | <para>This tells Glibc to compile itself against the headers recently
|
---|
127 | installed to the tools directory, so that it knows exactly what
|
---|
128 | features the kernel has and can optimize itself accordingly.</para>
|
---|
129 | </listitem>
|
---|
130 | </varlistentry>
|
---|
131 |
|
---|
132 | <varlistentry>
|
---|
133 | <term><parameter>--without-selinux</parameter></term>
|
---|
134 | <listitem>
|
---|
135 | <para>When building from hosts that include SELinux functionality
|
---|
136 | (e.g., Fedora Core 3), Glibc will build with support for SELinux.
|
---|
137 | As the LFS tools environment does not contain support for SELinux, a
|
---|
138 | Glibc compiled with such support will fail to operate correctly.</para>
|
---|
139 | </listitem>
|
---|
140 | </varlistentry>
|
---|
141 |
|
---|
142 | </variablelist>
|
---|
143 |
|
---|
144 | <para>During this stage the following warning might appear:</para>
|
---|
145 |
|
---|
146 | <blockquote>
|
---|
147 | <screen><computeroutput>configure: WARNING:
|
---|
148 | *** These auxiliary programs are missing or
|
---|
149 | *** incompatible versions: msgfmt
|
---|
150 | *** some features will be disabled.
|
---|
151 | *** Check the INSTALL file for required versions.</computeroutput></screen>
|
---|
152 | </blockquote>
|
---|
153 |
|
---|
154 | <para>The missing or incompatible <command>msgfmt</command> program is
|
---|
155 | generally harmless, but it can sometimes cause issues when running the
|
---|
156 | test suite. This <command>msgfmt</command> program is part of the
|
---|
157 | Gettext package which the host distribution should provide. If
|
---|
158 | <command>msgfmt</command> is present but deemed incompatible, upgrade
|
---|
159 | the host system's Gettext package or continue without it and see if
|
---|
160 | the test suite runs without problems regardless.</para>
|
---|
161 |
|
---|
162 | <para>Compile the package:</para>
|
---|
163 |
|
---|
164 | <screen><userinput remap="make">make</userinput></screen>
|
---|
165 |
|
---|
166 | <para>Compilation is now complete. As mentioned earlier, running the
|
---|
167 | test suites for the temporary tools installed in this chapter is not
|
---|
168 | mandatory. To run the Glibc test suite (if desired), the following
|
---|
169 | command will do so:</para>
|
---|
170 |
|
---|
171 | <screen><userinput remap="test">make check</userinput></screen>
|
---|
172 |
|
---|
173 | <para>For a discussion of test failures that are of particular
|
---|
174 | importance, please see <xref linkend="ch-system-glibc" role="."/></para>
|
---|
175 |
|
---|
176 | <para>In this chapter, some tests can be adversely affected by
|
---|
177 | existing tools or environmental issues on the host system. Glibc test
|
---|
178 | suite failures in this chapter are typically not worrisome. The Glibc
|
---|
179 | installed in <xref linkend="chapter-building-system"/> is the one that
|
---|
180 | will ultimately end up being used, so that is the one that needs to pass
|
---|
181 | most tests (even in <xref linkend="chapter-building-system"/>, some
|
---|
182 | failures could still occur, for example, with the math tests).</para>
|
---|
183 |
|
---|
184 | <para>When experiencing a failure, make a note of it, then continue by
|
---|
185 | reissuing the <command>make check</command> command. The test suite
|
---|
186 | should pick up where it left off and continue. This stop-start sequence
|
---|
187 | can be circumvented by issuing a <command>make -k check</command> command.
|
---|
188 | If using this option, be sure to log the output so that the log file can
|
---|
189 | be examined for failures later.</para>
|
---|
190 |
|
---|
191 | <para>The install stage of Glibc will issue a harmless warning at the
|
---|
192 | end about the absence of <filename>/tools/etc/ld.so.conf</filename>.
|
---|
193 | Prevent this warning with:</para>
|
---|
194 |
|
---|
195 | <screen><userinput remap="install">mkdir -v /tools/etc
|
---|
196 | touch /tools/etc/ld.so.conf</userinput></screen>
|
---|
197 |
|
---|
198 | <para>Install the package:</para>
|
---|
199 |
|
---|
200 | <screen><userinput remap="install">make install</userinput></screen>
|
---|
201 |
|
---|
202 | <para>Different countries and cultures have varying conventions for
|
---|
203 | how to communicate. These conventions range from the format for
|
---|
204 | representing dates and times to more complex issues, such as the
|
---|
205 | language spoken. The <quote>internationalization</quote> of GNU
|
---|
206 | programs works by locale.</para>
|
---|
207 |
|
---|
208 | <note>
|
---|
209 | <para>If the test suites are not being run in this chapter (as per
|
---|
210 | the recommendation), there is no need to install the locales now.
|
---|
211 | The appropriate locales will be installed in the next chapter.
|
---|
212 | To install the Glibc locales anyway, use instructions from
|
---|
213 | <xref linkend="ch-system-glibc" role="."/></para>
|
---|
214 | </note>
|
---|
215 |
|
---|
216 | </sect2>
|
---|
217 |
|
---|
218 | <sect2 role="content">
|
---|
219 | <title/>
|
---|
220 |
|
---|
221 | <para>Details on this package are located in
|
---|
222 | <xref linkend="contents-glibc" role="."/></para>
|
---|
223 |
|
---|
224 | </sect2>
|
---|
225 |
|
---|
226 | </sect1>
|
---|