| 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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| 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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| 4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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| 5 | %general-entities;
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| 6 | ]>
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| 7 |
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| 8 | <sect1 id="ch-system-glibc" role="wrap">
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| 9 | <?dbhtml filename="glibc.html"?>
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| 10 |
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| 11 | <title>Glibc-&glibc-version;</title>
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| 12 |
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| 13 | <indexterm zone="ch-system-glibc">
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| 14 | <primary sortas="a-Glibc">Glibc</primary>
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| 15 | </indexterm>
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| 16 |
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| 17 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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| 18 | href="../common/glibc.xml"
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| 19 | xpointer="xpointer(//*[@role='package'])"/>
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| 20 |
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| 21 | <sect2 role="installation">
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| 22 | <title>Installation of Glibc</title>
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| 23 |
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| 24 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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| 25 | href="../common/glibc.xml"
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| 26 | xpointer="xpointer(//*[@os='z'])"/>
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| 27 |
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| 28 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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| 29 | href="../common/glibc.xml"
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| 30 | xpointer="xpointer(//*[@os='b'])"/>
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| 31 |
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| 32 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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| 33 | href="../common/glibc.xml"
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| 34 | xpointer="xpointer(//*[@os='p1'])"/>
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| 35 |
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| 36 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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| 37 | href="../common/glibc.xml"
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| 38 | xpointer="xpointer(//*[@os='p2'])"/>
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| 39 |
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| 40 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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| 41 | href="../common/glibc.xml"
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| 42 | xpointer="xpointer(//*[@os='c'])"/>
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| 43 |
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| 44 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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| 45 | href="../common/glibc.xml"
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| 46 | xpointer="xpointer(//*[@os='d'])"/>
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| 47 |
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| 48 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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| 49 | href="../common/glibc.xml"
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| 50 | xpointer="xpointer(//*[@os='e'])"/>
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| 51 |
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| 52 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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| 53 | href="../common/glibc.xml"
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| 54 | xpointer="xpointer(//*[@os='f'])"/>
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| 55 |
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| 56 | <para os="l1">Tell Glibc to install its libraries into
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| 57 | <filename class="directory">/lib</filename>:</para>
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| 58 |
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| 59 | <screen os="l2"><userinput>echo "slibdir=/lib" >> configparms</userinput></screen>
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| 60 |
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| 61 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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| 62 | href="../common/glibc.xml"
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| 63 | xpointer="xpointer(//*[@os='g'])"/>
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| 64 |
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| 65 | <screen os="h"><userinput>CFLAGS="-mtune=generic -g -O2" \
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| 66 | ../glibc-&glibc-version;/configure --prefix=/usr \
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| 67 | --disable-profile --enable-add-ons --enable-kernel=2.6.0 \
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| 68 | --libexecdir=/usr/lib/glibc --libdir=/usr/lib</userinput></screen>
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| 69 |
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| 70 | <variablelist os="i">
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| 71 | <title>The meaning of the new configure option:</title>
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| 72 |
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| 73 | <varlistentry>
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| 74 | <term><parameter>--libexecdir=/usr/lib/glibc</parameter></term>
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| 75 | <listitem>
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| 76 | <para>This changes the location of the <command>pt_chown</command>
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| 77 | program from its default of <filename
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| 78 | class="directory">/usr/libexec</filename> to <filename
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| 79 | class="directory">/usr/lib/glibc</filename>.</para>
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| 80 | </listitem>
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| 81 | </varlistentry>
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| 82 | </variablelist>
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| 83 |
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| 84 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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| 85 | href="../common/glibc.xml"
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| 86 | xpointer="xpointer(//*[@os='j'])"/>
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| 87 |
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| 88 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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| 89 | href="../common/glibc.xml"
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| 90 | xpointer="xpointer(//*[@os='k'])"/>
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| 91 |
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| 92 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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| 93 | href="../common/glibc.xml"
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| 94 | xpointer="xpointer(//*[@os='l'])"/>
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| 95 |
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| 96 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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| 97 | href="../common/glibc.xml"
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| 98 | xpointer="xpointer(//*[@os='m'])"/>
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| 99 |
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| 100 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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| 101 | href="../multilib/glibc-64bit.xml"
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| 102 | xpointer="xpointer(//*[@os='n'])"/>
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| 103 |
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| 104 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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| 105 | href="../multilib/glibc-64bit.xml"
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| 106 | xpointer="xpointer(//*[@os='o'])"/>
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| 107 |
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| 108 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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| 109 | href="../multilib/glibc-64bit.xml"
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| 110 | xpointer="xpointer(//*[@os='p'])"/>
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| 111 |
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| 112 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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| 113 | href="../common/glibc.xml"
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| 114 | xpointer="xpointer(//*[@os='q'])"/>
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| 115 |
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| 116 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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| 117 | href="../common/glibc.xml"
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| 118 | xpointer="xpointer(//*[@os='r'])"/>
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| 119 |
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| 120 | <para>The install will finish by checking that everything is correctly installed.
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| 121 | Unfortunately, it will test for a multilib installation. On x86_64 Pure64 this means
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| 122 | it will try to test the non-existent 32-bit loader which has a different name
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| 123 | from the 64-bit loader (unlike on other 64-bit architectures). We fool it by
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| 124 | creating a symlink to the real loader.</para>
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| 125 |
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| 126 | <screen><userinput>ln -sv &glibc-ld-name; /lib/ld-linux.so.2</userinput></screen>
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| 127 |
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| 128 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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| 129 | href="../common/glibc.xml"
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| 130 | xpointer="xpointer(//*[@os='s'])"/>
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| 131 |
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| 132 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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| 133 | href="../common/glibc.xml"
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| 134 | xpointer="xpointer(//*[@os='t'])"/>
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| 135 |
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| 136 | <para>Now we can remove this symlink. We also need to correct the <command>
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| 137 | /usr/bin/ldd</command> script - if you look at this, you will see it references
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| 138 | not only the 32-bit linker, but also /lib64 where it thinks the 64-bit linker
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| 139 | is. The following <command>sed</command> will correct this:</para>
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| 140 |
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| 141 | <screen><userinput>rm -v /lib/ld-linux.so.2
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| 142 | cp -v /usr/bin/ldd{,.bak}
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| 143 | sed '/RTLDLIST/s%/ld-linux.so.2 /lib64%%' /usr/bin/ldd.bak >/usr/bin/ldd</userinput></screen>
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| 144 |
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| 145 | <para>Check the script to make sure the sed worked correctly, then delete
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| 146 | the backup.</para>
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| 147 |
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| 148 | <screen><userinput>rm -v /usr/bin/ldd.bak</userinput></screen>
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| 149 |
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| 150 | </sect2>
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| 151 |
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| 152 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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| 153 | href="../common/glibc.xml"
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| 154 | xpointer="xpointer(id('i18n-glibc'))"/>
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| 155 |
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| 156 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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| 157 | href="../common/glibc.xml"
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| 158 | xpointer="xpointer(id('conf-glibc'))"/>
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| 159 |
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| 160 | <sect2 id="conf-ld" role="configuration">
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| 161 | <title>Configuring The Dynamic Loader</title>
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| 162 |
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| 163 | <indexterm zone="conf-ld">
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| 164 | <primary sortas="e-/etc/ld.so.conf">/etc/ld.so.conf</primary>
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| 165 | </indexterm>
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| 166 |
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| 167 | <para>By default, the dynamic loader (<filename
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| 168 | class="libraryfile">/lib/ld-linux-x86-64.so.2</filename>) searches through
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| 169 | <filename class="directory">/lib</filename> and <filename
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| 170 | class="directory">/usr/lib</filename> for dynamic libraries that are
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| 171 | needed by programs as they are run. However, if there are libraries in
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| 172 | directories other than <filename class="directory">/lib</filename> and
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| 173 | <filename class="directory">/usr/lib</filename>, these need to be
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| 174 | added to the <filename>/etc/ld.so.conf</filename> file in order
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| 175 | for the dynamic loader to find them. Two directories that are commonly
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| 176 | known to contain additional libraries are <filename
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| 177 | class="directory">/usr/local/lib</filename> and <filename
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| 178 | class="directory">/opt/lib</filename>, so add those directories to the
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| 179 | dynamic loader's search path.</para>
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| 180 |
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| 181 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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| 182 | href="../common/glibc.xml"
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| 183 | xpointer="xpointer(//*[@os='ld-b'])"/>
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| 184 |
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| 185 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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| 186 | href="../common/glibc.xml"
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| 187 | xpointer="xpointer(//*[@os='ld-c'])"/>
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| 188 |
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| 189 | </sect2>
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| 190 |
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| 191 | <xi:include xmlns:xi="http://www.w3.org/2003/XInclude"
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| 192 | href="../common/glibc.xml"
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| 193 | xpointer="xpointer(id('contents-glibc'))"/>
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| 194 |
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| 195 | </sect1>
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