[673b0d8] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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[b06ca36] | 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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| 3 | "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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[673b0d8] | 4 | <!ENTITY % general-entities SYSTEM "../general.ent">
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| 5 | %general-entities;
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| 6 | ]>
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[1f7ca93] | 7 |
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[9652249] | 8 | <sect1 id="ch-tools-glibc" role="wrap">
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[1f7ca93] | 9 | <?dbhtml filename="glibc.html"?>
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| 10 |
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[e747759] | 11 | <sect1info condition="script">
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| 12 | <productname>glibc</productname>
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| 13 | <productnumber>&glibc-version;</productnumber>
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| 14 | <address>&glibc-url;</address>
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| 15 | </sect1info>
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| 16 |
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[1f7ca93] | 17 | <title>Glibc-&glibc-version;</title>
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| 18 |
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| 19 | <indexterm zone="ch-tools-glibc">
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| 20 | <primary sortas="a-Glibc">Glibc</primary>
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| 21 | <secondary>tools</secondary>
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| 22 | </indexterm>
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| 23 |
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| 24 | <sect2 role="package">
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| 25 | <title/>
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[bc82645e] | 26 |
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[d9441360] | 27 | <xi:include xmlns:xi="http://www.w3.org/2001/XInclude"
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[1f7ca93] | 28 | href="../chapter06/glibc.xml"
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| 29 | xpointer="xpointer(/sect1/sect2[1]/para[1])"/>
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[81fd230] | 30 |
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[1f7ca93] | 31 | <segmentedlist>
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| 32 | <segtitle>&buildtime;</segtitle>
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| 33 | <segtitle>&diskspace;</segtitle>
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[673b0d8] | 34 |
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[1f7ca93] | 35 | <seglistitem>
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[e4a5635] | 36 | <seg>&glibc-ch5-sbu;</seg>
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| 37 | <seg>&glibc-ch5-du;</seg>
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[1f7ca93] | 38 | </seglistitem>
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| 39 | </segmentedlist>
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[673b0d8] | 40 |
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[1f7ca93] | 41 | </sect2>
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[73aedd1d] | 42 |
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[1f7ca93] | 43 | <sect2 role="installation">
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| 44 | <title>Installation of Glibc</title>
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[9218b05] | 45 | <!--
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[6fc168b] | 46 | <para>First fix a build problem that affects i386 systems:</para>
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| 47 |
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| 48 | <screen><userinput remap="pre">patch -Np1 -i ../&glibc-upstream-patch;</userinput></screen>
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[9218b05] | 49 | -->
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[f1dd547] | 50 | <para>The Glibc documentation recommends building Glibc
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| 51 | in a dedicated build directory:</para>
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[9bda40d] | 52 |
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[f1dd547] | 53 | <screen><userinput remap="pre">mkdir -v build
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| 54 | cd build</userinput></screen>
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[f1c177f] | 55 |
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[1f7ca93] | 56 | <para>Next, prepare Glibc for compilation:</para>
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[73aedd1d] | 57 |
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[63df8c7] | 58 | <screen><userinput remap="configure">../configure \
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| 59 | --prefix=/tools \
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| 60 | --host=$LFS_TGT \
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| 61 | --build=$(../scripts/config.guess) \
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| 62 | --enable-kernel=&min-kernel; \
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| 63 | --with-headers=/tools/include \
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| 64 | libc_cv_forced_unwind=yes \
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| 65 | libc_cv_ctors_header=yes \
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[9f5aaf7] | 66 | libc_cv_c_cleanup=yes</userinput></screen>
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[73aedd1d] | 67 |
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[1f7ca93] | 68 | <variablelist>
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| 69 | <title>The meaning of the configure options:</title>
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| 70 |
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[4e82d47] | 71 | <varlistentry>
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[418b038] | 72 | <term><parameter>--host=$LFS_TGT, --build=$(../scripts/config.guess)</parameter></term>
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[4e82d47] | 73 | <listitem>
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| 74 | <para>The combined effect of these switches is that Glibc's build system
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| 75 | configures itself to cross-compile, using the cross-linker and
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| 76 | cross-compiler in <filename class="directory">/tools</filename>.</para>
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| 77 | </listitem>
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| 78 | </varlistentry>
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[5bf238b] | 79 | <!--
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[1f7ca93] | 80 | <varlistentry>
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[5bf238b] | 81 | <term><parameter>- -disable-profile</parameter></term>
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[1f7ca93] | 82 | <listitem>
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| 83 | <para>This builds the libraries without profiling information. Omit
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| 84 | this option if profiling on the temporary tools is necessary.</para>
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| 85 | </listitem>
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| 86 | </varlistentry>
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[5bf238b] | 87 | -->
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[1f7ca93] | 88 | <varlistentry>
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[70cd9f32] | 89 | <term><parameter>--enable-kernel=&min-kernel;</parameter></term>
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[1f7ca93] | 90 | <listitem>
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| 91 | <para>This tells Glibc to compile the library with support
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[70cd9f32] | 92 | for &min-kernel; and later Linux kernels. Workarounds for older
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[3532721] | 93 | kernels are not enabled.</para>
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[1f7ca93] | 94 | </listitem>
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| 95 | </varlistentry>
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[5bf238b] | 96 | <!--
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[bb189b0] | 97 | <varlistentry>
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[5bf238b] | 98 | <term><parameter>- -enable-obsolete-rpc</parameter></term>
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[bb189b0] | 99 | <listitem>
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| 100 | <para>This installs NIS and RPC related headers that are not
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| 101 | installed by default. They are required to build GCC and by
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| 102 | several BLFS packages.</para>
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| 103 | </listitem>
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| 104 | </varlistentry>
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[5bf238b] | 105 | -->
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[1f7ca93] | 106 | <varlistentry>
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| 107 | <term><parameter>--with-headers=/tools/include</parameter></term>
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| 108 | <listitem>
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| 109 | <para>This tells Glibc to compile itself against the headers recently
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| 110 | installed to the tools directory, so that it knows exactly what
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| 111 | features the kernel has and can optimize itself accordingly.</para>
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| 112 | </listitem>
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| 113 | </varlistentry>
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| 114 |
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| 115 | <varlistentry>
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[4e82d47] | 116 | <term><parameter>libc_cv_forced_unwind=yes</parameter></term>
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[1f7ca93] | 117 | <listitem>
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[ff9fa3c0] | 118 | <para>The linker installed during
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| 119 | <xref linkend="ch-tools-binutils-pass1"/> was cross-compiled and as
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| 120 | such cannot be used until Glibc has been installed. This means that
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| 121 | the configure test for force-unwind support will fail, as it relies on
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| 122 | a working linker. The libc_cv_forced_unwind=yes variable is passed in
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| 123 | order to inform <command>configure</command> that force-unwind
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| 124 | support is available without it having to run the test.</para>
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[4e82d47] | 125 | </listitem>
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| 126 | </varlistentry>
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| 127 | <varlistentry>
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| 128 | <term><parameter>libc_cv_c_cleanup=yes</parameter></term>
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| 129 | <listitem>
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[edbeeb5] | 130 | <para>Similarly, we pass libc_cv_c_cleanup=yes through to the
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[ff9fa3c0] | 131 | <command>configure</command> script so that the test is skipped and C
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| 132 | cleanup handling support is configured.</para>
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[1f7ca93] | 133 | </listitem>
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| 134 | </varlistentry>
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[0c0d7c1] | 135 | <varlistentry>
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| 136 | <term><parameter>libc_cv_ctors_header=yes</parameter></term>
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| 137 | <listitem>
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[edbeeb5] | 138 | <para>Similarly, we pass libc_cv_ctors_header=yes through to the
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[0c0d7c1] | 139 | <command>configure</command> script so that the test is skipped and
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| 140 | gcc constructor support is configured.</para>
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| 141 | </listitem>
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| 142 | </varlistentry>
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[1f7ca93] | 143 |
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| 144 | </variablelist>
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| 145 |
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| 146 | <para>During this stage the following warning might appear:</para>
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| 147 |
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| 148 | <blockquote>
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| 149 | <screen><computeroutput>configure: WARNING:
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| 150 | *** These auxiliary programs are missing or
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[81fd230] | 151 | *** incompatible versions: msgfmt
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| 152 | *** some features will be disabled.
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[1f7ca93] | 153 | *** Check the INSTALL file for required versions.</computeroutput></screen>
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| 154 | </blockquote>
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[81fd230] | 155 |
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[1f7ca93] | 156 | <para>The missing or incompatible <command>msgfmt</command> program is
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[5f7456b] | 157 | generally harmless. This <command>msgfmt</command> program is part of the
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| 158 | Gettext package which the host distribution should provide.</para>
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[81fd230] | 159 |
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[7b1923d] | 160 | <note><para>There have been reports that this package may fail when
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| 161 | building as a "parallel make". If this occurs, rerun the make command
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| 162 | with a "-j1" option.</para></note>
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| 163 |
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[1f7ca93] | 164 | <para>Compile the package:</para>
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[73aedd1d] | 165 |
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[0445a3d] | 166 | <screen><userinput remap="make">make</userinput></screen>
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[73aedd1d] | 167 |
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[c4cd0cc] | 168 | <!--
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[0abc697] | 169 | <para>This package does come with a test suite, however, it cannot be
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| 170 | run at this time because we do not have a C++ compiler yet.</para>
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[81fd230] | 171 |
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[ca2f862e] | 172 | <note>
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| 173 | <para>The test suite also requires locale data to be installed in order to run
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[90674770] | 174 | successfully. Locale data provides information to the system regarding
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[ca2f862e] | 175 | such things as the date, time, and currency formats accepted and output by
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| 176 | system utilities. If the test suites are not being run in this chapter
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| 177 | (as per the recommendation), there is no need to install the locales now.
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| 178 | The appropriate locales will be installed in the next chapter. To install
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| 179 | the Glibc locales anyway, use instructions from <xref
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| 180 | linkend="ch-system-glibc" role="."/></para>
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| 181 | </note>
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[c4cd0cc] | 182 | -->
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[1f7ca93] | 183 | <para>Install the package:</para>
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[73aedd1d] | 184 |
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[0445a3d] | 185 | <screen><userinput remap="install">make install</userinput></screen>
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[73aedd1d] | 186 |
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[1a3e6a3] | 187 | <caution>
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| 188 | <para>At this point, it is imperative to stop and ensure that the basic
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| 189 | functions (compiling and linking) of the new toolchain are working as
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| 190 | expected. To perform a sanity check, run the following commands:</para>
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| 191 |
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[3d56263] | 192 | <screen><userinput>echo 'int main(){}' > dummy.c
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[1a3e6a3] | 193 | $LFS_TGT-gcc dummy.c
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| 194 | readelf -l a.out | grep ': /tools'</userinput></screen>
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| 195 |
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| 196 | <para>If everything is working correctly, there should be no errors,
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| 197 | and the output of the last command will be of the form:</para>
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| 198 |
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| 199 | <screen><computeroutput>[Requesting program interpreter: /tools/lib/ld-linux.so.2]</computeroutput></screen>
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| 200 |
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[63d555b5] | 201 | <para>Note that for 64-bit machines, the interpreter name will be
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| 202 | <filename>/tools/lib64/ld-linux-x86-64.so.2</filename>.</para>
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[1a3e6a3] | 203 |
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| 204 | <para>If the output is not shown as above or there was no output at all,
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| 205 | then something is wrong. Investigate and retrace the steps to find out
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| 206 | where the problem is and correct it. This issue must be resolved before
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[1c47f33] | 207 | continuing on.</para>
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[1a3e6a3] | 208 |
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| 209 | <para>Once all is well, clean up the test files:</para>
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| 210 |
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| 211 | <screen><userinput>rm -v dummy.c a.out</userinput></screen>
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| 212 |
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| 213 | </caution>
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| 214 |
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[e6ae50d] | 215 | <note><para>Building Binutils in the section after next will serve as an
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| 216 | additional check that the toolchain has been built properly. If Binutils
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| 217 | fails to build, it is an indication that something has gone wrong with the
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| 218 | previous Binutils, GCC, or Glibc installations.</para></note>
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[1a3e6a3] | 219 |
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[1f7ca93] | 220 | </sect2>
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[bc82645e] | 221 |
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[1f7ca93] | 222 | <sect2 role="content">
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| 223 | <title/>
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[81fd230] | 224 |
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[1f7ca93] | 225 | <para>Details on this package are located in
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| 226 | <xref linkend="contents-glibc" role="."/></para>
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| 227 |
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| 228 | </sect2>
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[81fd230] | 229 |
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[1f7ca93] | 230 | </sect1>
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