[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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[6a82dd9] | 7 |
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[81fd230] | 8 | <sect1 id="ch-system-glibc" role="wrap">
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[6a82dd9] | 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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[6a82dd9] | 17 | <title>Glibc-&glibc-version;</title>
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| 18 |
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| 19 | <indexterm zone="ch-system-glibc">
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| 20 | <primary sortas="a-Glibc">Glibc</primary>
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| 21 | </indexterm>
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| 22 |
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| 23 | <sect2 role="package">
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| 24 | <title/>
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| 25 |
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| 26 | <para>The Glibc package contains the main C library. This library provides
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| 27 | the basic routines for allocating memory, searching directories, opening and
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| 28 | closing files, reading and writing files, string handling, pattern matching,
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| 29 | arithmetic, and so on.</para>
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| 30 |
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| 31 | <segmentedlist>
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| 32 | <segtitle>&buildtime;</segtitle>
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| 33 | <segtitle>&diskspace;</segtitle>
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| 34 |
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| 35 | <seglistitem>
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[e4a5635] | 36 | <seg>&glibc-ch6-sbu;</seg>
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| 37 | <seg>&glibc-ch6-du;</seg>
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[6a82dd9] | 38 | </seglistitem>
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| 39 | </segmentedlist>
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| 40 |
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| 41 | </sect2>
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| 42 |
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| 43 | <sect2 role="installation">
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| 44 | <title>Installation of Glibc</title>
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[12836f5] | 45 |
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[d730742] | 46 | <note><para>The Glibc build system is self-contained and will install
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| 47 | perfectly, even though the compiler specs file and linker are still
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| 48 | pointing to <filename class="directory">/tools</filename>. The specs
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| 49 | and linker cannot be adjusted before the Glibc install because the
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| 50 | Glibc autoconf tests would give false results and defeat the goal
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| 51 | of achieving a clean build.</para></note>
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[6a82dd9] | 52 |
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[0d84af1] | 53 | <para>Some of the Glibc programs use the non-FHS compilant
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[4028929] | 54 | <filename class="directory">/var/db</filename> directory to store
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| 55 | their runtime data. Apply the following patch to make such programs
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| 56 | store their runtime data in the FHS-compliant locations:</para>
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| 57 |
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| 58 | <screen><userinput remap="pre">patch -Np1 -i ../&glibc-fhs-patch;</userinput></screen>
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[869b0966] | 59 | <!--
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[3b4e848] | 60 | <para>Fix a minor security issue with glob functions:</para>
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| 61 |
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| 62 | <screen><userinput remap="pre">patch -Np1 -i ../&glibc-glob-patch;</userinput></screen>
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[797ada6] | 63 | -->
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[bc375da6] | 64 | <para>Fix a problem introduced with the linux-5.2 kernel:</para>
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| 65 |
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| 66 | <screen><userinput remap="pre">sed -i '/asm.socket.h/a# include <linux/sockios.h>' \
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| 67 | sysdeps/unix/sysv/linux/bits/socket.h</userinput></screen>
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| 68 |
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[797ada6] | 69 | <para>Create a symlink for LSB
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[0967c90] | 70 | compliance. Additionally, for x86_64, create a compatibility symlink
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| 71 | required for the dynamic loader to function correctly:</para>
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[be3d9f3] | 72 |
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| 73 | <screen><userinput remap="pre">case $(uname -m) in
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[797ada6] | 74 | i?86) ln -sfv ld-linux.so.2 /lib/ld-lsb.so.3
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[be3d9f3] | 75 | ;;
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[797ada6] | 76 | x86_64) ln -sfv ../lib/ld-linux-x86-64.so.2 /lib64
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[ffbeb5f] | 77 | ln -sfv ../lib/ld-linux-x86-64.so.2 /lib64/ld-lsb-x86-64.so.3
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[be3d9f3] | 78 | ;;
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| 79 | esac</userinput></screen>
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[797ada6] | 80 | <!--
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[ffbeb5f] | 81 | <para>Remove a file that may be left over from a previous build attempt:
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| 82 | </para>
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| 83 |
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| 84 | <screen><userinput remap="pre">rm -f /usr/include/limits.h</userinput></screen>
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[797ada6] | 85 | -->
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[f1dd547] | 86 | <para>The Glibc documentation recommends building Glibc
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| 87 | in a dedicated build directory:</para>
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[73aedd1d] | 88 |
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[f1dd547] | 89 | <screen><userinput remap="pre">mkdir -v build
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| 90 | cd build</userinput></screen>
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[c906b7e] | 91 |
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[6a82dd9] | 92 | <para>Prepare Glibc for compilation:</para>
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[73aedd1d] | 93 |
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[797ada6] | 94 | <screen><userinput remap="configure">CC="gcc -ffile-prefix-map=/tools=/usr" \
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[0967c90] | 95 | ../configure --prefix=/usr \
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| 96 | --disable-werror \
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[5c0c6f9] | 97 | --enable-kernel=&min-kernel; \
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[0967c90] | 98 | --enable-stack-protector=strong \
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[b3f1ebb3] | 99 | --with-headers=/usr/include \
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[797ada6] | 100 | libc_cv_slibdir=/lib</userinput></screen>
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[73aedd1d] | 101 |
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[5897639] | 102 | <variablelist>
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[0967c90] | 103 | <title>The meaning of the options and new configure parameters:</title>
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| 104 |
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| 105 | <varlistentry>
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[797ada6] | 106 | <term><parameter>CC="gcc -ffile-prefix-map=/tools=/usr"</parameter></term>
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[0967c90] | 107 | <listitem>
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[797ada6] | 108 | <para>Make GCC record any references to files in /tools in result
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| 109 | of the compilation as if the files resided in /usr. This avoids
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| 110 | introduction of invalid paths in debugging symbols.</para>
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[0967c90] | 111 | </listitem>
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| 112 | </varlistentry>
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[5897639] | 113 |
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| 114 | <varlistentry>
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| 115 | <term><parameter>--disable-werror</parameter></term>
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| 116 | <listitem>
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| 117 | <para>This option disables the -Werror option passed to
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| 118 | GCC. This is necessary for running the test suite.</para>
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| 119 | </listitem>
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| 120 | </varlistentry>
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| 121 |
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| 122 | <varlistentry>
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| 123 | <term><parameter>--enable-stack-protector=strong</parameter></term>
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| 124 | <listitem>
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[0d84af1] | 125 | <para>This option increases system security by adding
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| 126 | extra code to check for buffer overflows, such as stack
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| 127 | smashing attacks.</para>
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[5897639] | 128 | </listitem>
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| 129 | </varlistentry>
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| 130 |
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[6702623] | 131 | <varlistentry>
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| 132 | <term><parameter>--with-headers=/usr/include</parameter></term>
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| 133 | <listitem>
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| 134 | <para>This option tells the build system where to find the
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| 135 | kernel API headers. By default, those headers are sought in
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| 136 | <filename class="directory">/tools/include</filename>.</para>
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| 137 | </listitem>
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| 138 | </varlistentry>
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| 139 |
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[5897639] | 140 | <varlistentry>
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| 141 | <term><parameter>libc_cv_slibdir=/lib</parameter></term>
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| 142 | <listitem>
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| 143 | <para>This variable sets the correct library for all
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| 144 | systems. We do not want lib64 to be used.</para>
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| 145 | </listitem>
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| 146 | </varlistentry>
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| 147 |
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| 148 | </variablelist>
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| 149 |
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[6a82dd9] | 150 | <para>Compile the package:</para>
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[73aedd1d] | 151 |
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[0445a3d] | 152 | <screen><userinput remap="make">make</userinput></screen>
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[73aedd1d] | 153 |
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[6a82dd9] | 154 | <important>
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| 155 | <para>In this section, the test suite for Glibc is considered critical.
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| 156 | Do not skip it under any circumstance.</para>
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| 157 | </important>
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[81fd230] | 158 |
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[0d84af1] | 159 | <para>Generally a few tests do not pass. The test failures listed below
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| 160 | are usually safe to ignore.</para>
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[d9c836bb] | 161 |
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[082bbce] | 162 | <!-- Use remap="make" here to work around a jhalfs issue. -->
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| 163 | <screen><userinput remap="make">case $(uname -m) in
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[1b3fac7] | 164 | i?86) ln -sfnv $PWD/elf/ld-linux.so.2 /lib ;;
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| 165 | x86_64) ln -sfnv $PWD/elf/ld-linux-x86-64.so.2 /lib ;;
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[082bbce] | 166 | esac</userinput></screen>
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[2e02c35] | 167 |
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[70b235f4] | 168 | <note><para>The symbolic link above is needed to run the tests at this
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[d7f58cc] | 169 | stage of building in the chroot environment. It will be overwritten
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[70b235f4] | 170 | in the install phase below.</para></note>
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| 171 |
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[082bbce] | 172 | <screen><userinput remap="test">make check</userinput></screen>
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| 173 |
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[5897639] | 174 | <para>You may see some test failures. The Glibc test suite is
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[3b66f6a] | 175 | somewhat dependent on the host system. This is a list of the most common
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[5897639] | 176 | issues seen for some versions of LFS:</para>
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[6a82dd9] | 177 |
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| 178 | <itemizedlist>
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[5d1f0157] | 179 |
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[751a13d] | 180 | <listitem>
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| 181 | <para><emphasis>misc/tst-ttyname</emphasis>
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| 182 | is known to fail in the LFS chroot environment.</para>
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| 183 | </listitem>
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[f783741] | 184 |
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[efca30a] | 185 | <listitem>
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| 186 | <para><emphasis>inet/tst-idna_name_classify</emphasis>
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| 187 | is known to fail in the LFS chroot environment.</para>
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| 188 | </listitem>
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[f783741] | 189 |
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[0238d49] | 190 | <listitem>
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[5897639] | 191 | <para><emphasis>posix/tst-getaddrinfo4</emphasis> and
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| 192 | <emphasis>posix/tst-getaddrinfo5</emphasis>
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| 193 | may fail on some architectures.</para>
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[0238d49] | 194 | </listitem>
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[de6905d] | 195 |
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| 196 | <listitem>
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| 197 | <para>The <emphasis>nss/tst-nss-files-hosts-multi</emphasis>
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| 198 | test may fail for reasons that have not been determined.</para>
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| 199 | </listitem>
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| 200 |
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[d9c836bb] | 201 | <listitem>
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[1b3fac7] | 202 | <para>The <emphasis>rt/tst-cputimer{1,2,3}</emphasis> tests depend on
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| 203 | the host system kernel. Kernels 4.14.91–4.14.96,
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| 204 | 4.19.13–4.19.18, and 4.20.0–4.20.5 are known to
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[235556a] | 205 | cause these tests to fail.
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[1b3fac7] | 206 | </para>
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[6a82dd9] | 207 | </listitem>
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[a271796] | 208 |
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[6a82dd9] | 209 | <listitem>
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[a0ec869] | 210 | <para>The math tests sometimes fail when running on
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[9218b05] | 211 | systems where the CPU is not a relatively new Intel or
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| 212 | AMD processor.</para>
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[6a82dd9] | 213 | </listitem>
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[5ed8d0a] | 214 | <!--
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[6934b62] | 215 | <listitem>
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| 216 | <para>The
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| 217 | <emphasis>nptl/tst-thread-affinity-{pthread,pthread2,sched}</emphasis>
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| 218 | tests may fail for reasons that have not been determined. </para>
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| 219 | </listitem>
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[9218b05] | 220 |
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[ee321a46] | 221 | <listitem>
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[5d1f0157] | 222 | <para>Other tests known to fail on some architectures are
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[326224b] | 223 | malloc/tst-malloc-usable and nptl/tst-cleanupx4. </para>
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[ee321a46] | 224 | </listitem>
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[751a13d] | 225 | -->
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[6a82dd9] | 226 | </itemizedlist>
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| 227 |
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| 228 | <para>Though it is a harmless message, the install stage of Glibc will
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| 229 | complain about the absence of <filename>/etc/ld.so.conf</filename>.
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| 230 | Prevent this warning with:</para>
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[1caa48e] | 231 |
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[0445a3d] | 232 | <screen><userinput remap="install">touch /etc/ld.so.conf</userinput></screen>
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[1caa48e] | 233 |
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[1a2bc54] | 234 | <para>Fix the generated Makefile to skip an unneeded sanity check
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[ffbeb5f] | 235 | that fails in the LFS partial environment:
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| 236 | </para>
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| 237 |
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| 238 | <screen><userinput remap="install">sed '/test-installation/s@$(PERL)@echo not running@' -i ../Makefile</userinput></screen>
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| 239 |
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[6a82dd9] | 240 | <para>Install the package:</para>
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[73aedd1d] | 241 |
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[0445a3d] | 242 | <screen><userinput remap="install">make install</userinput></screen>
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[73aedd1d] | 243 |
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[4028929] | 244 | <para>Install the configuration file and runtime directory for
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| 245 | <command>nscd</command>:</para>
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| 246 |
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[f1dd547] | 247 | <screen><userinput remap="install">cp -v ../nscd/nscd.conf /etc/nscd.conf
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[4028929] | 248 | mkdir -pv /var/cache/nscd</userinput></screen>
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| 249 |
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[1118b17] | 250 | <para revision="systemd">Install the systemd support files for
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| 251 | <command>nscd</command>:</para>
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| 252 |
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| 253 | <screen revision="systemd"><userinput remap="install">install -v -Dm644 ../nscd/nscd.tmpfiles /usr/lib/tmpfiles.d/nscd.conf
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| 254 | install -v -Dm644 ../nscd/nscd.service /lib/systemd/system/nscd.service</userinput></screen>
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| 255 |
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[d730742] | 256 | <para>Next, install the locales that can make the system respond in a
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| 257 | different language. None of the locales are required, but if some of them
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| 258 | are missing, the test suites of future packages would skip important
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| 259 | testcases.</para>
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[6a82dd9] | 260 |
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| 261 | <para>Individual locales can be installed using the
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| 262 | <command>localedef</command> program. E.g., the first
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| 263 | <command>localedef</command> command below combines the
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[fffccab] | 264 | <filename>/usr/share/i18n/locales/cs_CZ</filename>
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[6a82dd9] | 265 | charset-independent locale definition with the
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[fffccab] | 266 | <filename>/usr/share/i18n/charmaps/UTF-8.gz</filename>
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[6a82dd9] | 267 | charmap definition and appends the result to the
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| 268 | <filename>/usr/lib/locale/locale-archive</filename> file.
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| 269 | The following instructions will install the minimum set of
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| 270 | locales necessary for the optimal coverage of tests:</para>
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[3f0c882] | 271 |
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[0445a3d] | 272 | <screen role="nodump"><userinput remap="locale-test">mkdir -pv /usr/lib/locale
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[75828c3] | 273 | localedef -i POSIX -f UTF-8 C.UTF-8 2> /dev/null || true
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[1e77f0c] | 274 | localedef -i cs_CZ -f UTF-8 cs_CZ.UTF-8
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[73aedd1d] | 275 | localedef -i de_DE -f ISO-8859-1 de_DE
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| 276 | localedef -i de_DE@euro -f ISO-8859-15 de_DE@euro
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[1e77f0c] | 277 | localedef -i de_DE -f UTF-8 de_DE.UTF-8
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[75828c3] | 278 | localedef -i el_GR -f ISO-8859-7 el_GR
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[e9aabce] | 279 | localedef -i en_GB -f UTF-8 en_GB.UTF-8
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[73aedd1d] | 280 | localedef -i en_HK -f ISO-8859-1 en_HK
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| 281 | localedef -i en_PH -f ISO-8859-1 en_PH
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| 282 | localedef -i en_US -f ISO-8859-1 en_US
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[3a35b11] | 283 | localedef -i en_US -f UTF-8 en_US.UTF-8
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[73aedd1d] | 284 | localedef -i es_MX -f ISO-8859-1 es_MX
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[673b0d8] | 285 | localedef -i fa_IR -f UTF-8 fa_IR
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[73aedd1d] | 286 | localedef -i fr_FR -f ISO-8859-1 fr_FR
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| 287 | localedef -i fr_FR@euro -f ISO-8859-15 fr_FR@euro
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[d93d1c90] | 288 | localedef -i fr_FR -f UTF-8 fr_FR.UTF-8
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[73aedd1d] | 289 | localedef -i it_IT -f ISO-8859-1 it_IT
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[5b36d32] | 290 | localedef -i it_IT -f UTF-8 it_IT.UTF-8
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[1e77f0c] | 291 | localedef -i ja_JP -f EUC-JP ja_JP
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[75828c3] | 292 | localedef -i ja_JP -f SHIFT_JIS ja_JP.SIJS 2> /dev/null || true
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[74f027f] | 293 | localedef -i ja_JP -f UTF-8 ja_JP.UTF-8
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[5b36d32] | 294 | localedef -i ru_RU -f KOI8-R ru_RU.KOI8-R
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| 295 | localedef -i ru_RU -f UTF-8 ru_RU.UTF-8
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[fffccab] | 296 | localedef -i tr_TR -f UTF-8 tr_TR.UTF-8
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[75828c3] | 297 | localedef -i zh_CN -f GB18030 zh_CN.GB18030
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| 298 | localedef -i zh_HK -f BIG5-HKSCS zh_HK.BIG5-HKSCS</userinput></screen>
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[73aedd1d] | 299 |
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[6a82dd9] | 300 | <para>In addition, install the locale for your own country, language and
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| 301 | character set.</para>
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[fa21b3d] | 302 |
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[6a82dd9] | 303 | <para>Alternatively, install all locales listed in the
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| 304 | <filename>glibc-&glibc-version;/localedata/SUPPORTED</filename> file
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| 305 | (it includes every locale listed above and many more) at once with the
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| 306 | following time-consuming command:</para>
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[fa21b3d] | 307 |
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[0445a3d] | 308 | <screen><userinput remap="locale-full">make localedata/install-locales</userinput></screen>
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[fa21b3d] | 309 |
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[6a82dd9] | 310 | <para>Then use the <command>localedef</command> command to create and
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| 311 | install locales not listed in the
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| 312 | <filename>glibc-&glibc-version;/localedata/SUPPORTED</filename> file
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[5a25e0a] | 313 | in the unlikely case you need them.</para>
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[6a82dd9] | 314 |
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[3b03219] | 315 | <note><para>Glibc now uses libidn2 when resolving internationalized
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| 316 | domain names. This is a run time dependency. If this capability
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[235556a] | 317 | is needed, the instructions for installing libidn2 are in the
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[3b03219] | 318 | <ulink url="&blfs-book;general/libidn2.html">BLFS libidn2 page</ulink>.
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| 319 | </para></note>
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| 320 |
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[6a82dd9] | 321 | </sect2>
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[94aa6621] | 322 |
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[6a82dd9] | 323 | <sect2 id="conf-glibc" role="configuration">
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| 324 | <title>Configuring Glibc</title>
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[5888299] | 325 |
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[6a82dd9] | 326 | <indexterm zone="conf-glibc">
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| 327 | <primary sortas="e-/etc/nsswitch.conf">/etc/nsswitch.conf</primary>
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| 328 | </indexterm>
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[81fd230] | 329 |
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[6a82dd9] | 330 | <indexterm zone="conf-glibc">
|
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| 331 | <primary sortas="e-/etc/localtime">/etc/localtime</primary>
|
---|
| 332 | </indexterm>
|
---|
[342b176] | 333 |
|
---|
[a72ca33] | 334 | <sect3>
|
---|
| 335 | <title>Adding nsswitch.conf</title>
|
---|
| 336 |
|
---|
[6a82dd9] | 337 | <para>The <filename>/etc/nsswitch.conf</filename> file needs to be created
|
---|
[a72ca33] | 338 | because the Glibc defaults do not work well in a networked environment.
|
---|
| 339 | </para>
|
---|
[6a82dd9] | 340 |
|
---|
| 341 | <para>Create a new file <filename>/etc/nsswitch.conf</filename> by running the
|
---|
| 342 | following:</para>
|
---|
[342b176] | 343 |
|
---|
[bb55064] | 344 | <screen><userinput>cat > /etc/nsswitch.conf << "EOF"
|
---|
[d72e04a] | 345 | <literal># Begin /etc/nsswitch.conf
|
---|
[342b176] | 346 |
|
---|
| 347 | passwd: files
|
---|
| 348 | group: files
|
---|
| 349 | shadow: files
|
---|
| 350 |
|
---|
| 351 | hosts: files dns
|
---|
| 352 | networks: files
|
---|
| 353 |
|
---|
[4a80bec] | 354 | protocols: files
|
---|
| 355 | services: files
|
---|
| 356 | ethers: files
|
---|
| 357 | rpc: files
|
---|
[342b176] | 358 |
|
---|
[d72e04a] | 359 | # End /etc/nsswitch.conf</literal>
|
---|
[bb55064] | 360 | EOF</userinput></screen>
|
---|
[342b176] | 361 |
|
---|
[a72ca33] | 362 | </sect3>
|
---|
| 363 |
|
---|
| 364 | <sect3>
|
---|
| 365 | <title>Adding time zone data</title>
|
---|
| 366 |
|
---|
[edbeeb5] | 367 | <para>Install and set up the time zone data with the following:</para>
|
---|
[f1dd547] | 368 | <screen><userinput>tar -xf ../../tzdata&tzdata-version;.tar.gz
|
---|
[f1c177f] | 369 |
|
---|
[ea31e92] | 370 | ZONEINFO=/usr/share/zoneinfo
|
---|
[2ca8941] | 371 | mkdir -pv $ZONEINFO/{posix,right}
|
---|
[ea31e92] | 372 |
|
---|
| 373 | for tz in etcetera southamerica northamerica europe africa antarctica \
|
---|
[fabfe841] | 374 | asia australasia backward pacificnew systemv; do
|
---|
[082bbce] | 375 | zic -L /dev/null -d $ZONEINFO ${tz}
|
---|
| 376 | zic -L /dev/null -d $ZONEINFO/posix ${tz}
|
---|
| 377 | zic -L leapseconds -d $ZONEINFO/right ${tz}
|
---|
[287a36b4] | 378 | done
|
---|
[f0f7ea0] | 379 |
|
---|
[f1d755b] | 380 | cp -v zone.tab zone1970.tab iso3166.tab $ZONEINFO
|
---|
[ea31e92] | 381 | zic -d $ZONEINFO -p America/New_York
|
---|
| 382 | unset ZONEINFO</userinput></screen>
|
---|
[f1c177f] | 383 |
|
---|
[7a6bcf9] | 384 | <variablelist>
|
---|
| 385 | <title>The meaning of the zic commands:</title>
|
---|
| 386 |
|
---|
| 387 | <varlistentry>
|
---|
| 388 | <term><parameter>zic -L /dev/null ...</parameter></term>
|
---|
| 389 | <listitem>
|
---|
[edbeeb5] | 390 | <para>This creates posix time zones, without any leap seconds. It is
|
---|
[7a6bcf9] | 391 | conventional to put these in both
|
---|
| 392 | <filename class="directory">zoneinfo</filename> and
|
---|
| 393 | <filename class="directory">zoneinfo/posix</filename>. It is
|
---|
[edbeeb5] | 394 | necessary to put the POSIX time zones in
|
---|
[7a6bcf9] | 395 | <filename class="directory">zoneinfo</filename>, otherwise various
|
---|
| 396 | test-suites will report errors. On an embedded system, where space is
|
---|
[edbeeb5] | 397 | tight and you do not intend to ever update the time zones, you could save
|
---|
[7a6bcf9] | 398 | 1.9MB by not using the <filename class="directory">posix</filename>
|
---|
[7bb9fda] | 399 | directory, but some applications or test-suites might produce some
|
---|
| 400 | failures.</para>
|
---|
[7a6bcf9] | 401 | </listitem>
|
---|
| 402 | </varlistentry>
|
---|
| 403 | <varlistentry>
|
---|
| 404 | <term><parameter>zic -L leapseconds ...</parameter></term>
|
---|
| 405 | <listitem>
|
---|
[edbeeb5] | 406 | <para>This creates right time zones, including leap seconds. On an
|
---|
[7a6bcf9] | 407 | embedded system, where space is tight and you do not intend to
|
---|
[edbeeb5] | 408 | ever update the time zones, or care about the correct time, you could
|
---|
[7a6bcf9] | 409 | save 1.9MB by omitting the <filename class="directory">right</filename>
|
---|
| 410 | directory.</para>
|
---|
| 411 | </listitem>
|
---|
| 412 | </varlistentry>
|
---|
| 413 | <varlistentry>
|
---|
| 414 | <term><parameter>zic ... -p ...</parameter></term>
|
---|
| 415 | <listitem>
|
---|
[d7f2eb0] | 416 | <para>This creates the <filename>posixrules</filename> file. We use
|
---|
[cb02946] | 417 | New York because POSIX requires the daylight savings time rules
|
---|
[e7134f1] | 418 | to be in accordance with US rules.</para>
|
---|
[7a6bcf9] | 419 | </listitem>
|
---|
| 420 | </varlistentry>
|
---|
| 421 | </variablelist>
|
---|
| 422 |
|
---|
| 423 |
|
---|
| 424 | <para>One way to determine the local time zone is to run the following
|
---|
[e1060de] | 425 | script:</para>
|
---|
[342b176] | 426 |
|
---|
[be4be92] | 427 | <screen role="nodump"><userinput>tzselect</userinput></screen>
|
---|
[342b176] | 428 |
|
---|
[6a82dd9] | 429 | <para>After answering a few questions about the location, the script will
|
---|
[e1060de] | 430 | output the name of the time zone (e.g.,
|
---|
| 431 | <emphasis>America/Edmonton</emphasis>). There are also some other possible
|
---|
[edbeeb5] | 432 | time zones listed in <filename
|
---|
[e1060de] | 433 | class='directory'>/usr/share/zoneinfo</filename> such as
|
---|
| 434 | <emphasis>Canada/Eastern</emphasis> or <emphasis>EST5EDT</emphasis> that
|
---|
| 435 | are not identified by the script but can be used.</para>
|
---|
| 436 |
|
---|
| 437 | <para>Then create the <filename>/etc/localtime</filename> file by
|
---|
| 438 | running:</para>
|
---|
[342b176] | 439 |
|
---|
[1daca67] | 440 | <screen><userinput>ln -sfv /usr/share/zoneinfo/<replaceable><xxx></replaceable> /etc/localtime</userinput></screen>
|
---|
[342b176] | 441 |
|
---|
[e1060de] | 442 | <para>Replace <replaceable><xxx></replaceable> with the name of the
|
---|
| 443 | time zone selected (e.g., Canada/Eastern).</para>
|
---|
[6a82dd9] | 444 |
|
---|
[a72ca33] | 445 | </sect3>
|
---|
[6a82dd9] | 446 |
|
---|
[a72ca33] | 447 | <sect3 id="conf-ld" role="configuration">
|
---|
[6a82dd9] | 448 | <title>Configuring the Dynamic Loader</title>
|
---|
| 449 |
|
---|
| 450 | <indexterm zone="conf-ld">
|
---|
| 451 | <primary sortas="e-/etc/ld.so.conf">/etc/ld.so.conf</primary>
|
---|
| 452 | </indexterm>
|
---|
| 453 |
|
---|
| 454 | <para>By default, the dynamic loader (<filename
|
---|
| 455 | class="libraryfile">/lib/ld-linux.so.2</filename>) searches through
|
---|
| 456 | <filename class="directory">/lib</filename> and <filename
|
---|
| 457 | class="directory">/usr/lib</filename> for dynamic libraries that are
|
---|
| 458 | needed by programs as they are run. However, if there are libraries in
|
---|
| 459 | directories other than <filename class="directory">/lib</filename> and
|
---|
| 460 | <filename class="directory">/usr/lib</filename>, these need to be added
|
---|
| 461 | to the <filename>/etc/ld.so.conf</filename> file in order for the
|
---|
| 462 | dynamic loader to find them. Two directories that are commonly known
|
---|
| 463 | to contain additional libraries are <filename
|
---|
| 464 | class="directory">/usr/local/lib</filename> and <filename
|
---|
| 465 | class="directory">/opt/lib</filename>, so add those directories to the
|
---|
| 466 | dynamic loader's search path.</para>
|
---|
| 467 |
|
---|
| 468 | <para>Create a new file <filename>/etc/ld.so.conf</filename> by running the
|
---|
| 469 | following:</para>
|
---|
[342b176] | 470 |
|
---|
[bb55064] | 471 | <screen><userinput>cat > /etc/ld.so.conf << "EOF"
|
---|
[d72e04a] | 472 | <literal># Begin /etc/ld.so.conf
|
---|
[342b176] | 473 | /usr/local/lib
|
---|
| 474 | /opt/lib
|
---|
[50f648b] | 475 | </literal>
|
---|
[bb55064] | 476 | EOF</userinput></screen>
|
---|
[342b176] | 477 |
|
---|
[50f648b] | 478 | <para>If desired, the dynamic loader can also search a directory and
|
---|
[2ca8941] | 479 | include the contents of files found there. Generally the files in
|
---|
[50f648b] | 480 | this include directory are one line specifying the desired library path.
|
---|
| 481 | To add this capability run the following commands:</para>
|
---|
| 482 |
|
---|
| 483 | <screen role="nodump"><userinput>cat >> /etc/ld.so.conf << "EOF"
|
---|
| 484 | <literal># Add an include directory
|
---|
| 485 | include /etc/ld.so.conf.d/*.conf
|
---|
| 486 | </literal>
|
---|
| 487 | EOF
|
---|
[3d086301] | 488 | mkdir -pv /etc/ld.so.conf.d</userinput></screen>
|
---|
[50f648b] | 489 |
|
---|
[a72ca33] | 490 | </sect3>
|
---|
[6a82dd9] | 491 | </sect2>
|
---|
| 492 |
|
---|
| 493 | <sect2 id="contents-glibc" role="content">
|
---|
| 494 | <title>Contents of Glibc</title>
|
---|
| 495 |
|
---|
| 496 | <segmentedlist>
|
---|
| 497 | <segtitle>Installed programs</segtitle>
|
---|
| 498 | <segtitle>Installed libraries</segtitle>
|
---|
[fe05b08] | 499 | <segtitle>Installed directories</segtitle>
|
---|
[6a82dd9] | 500 |
|
---|
| 501 | <seglistitem>
|
---|
| 502 | <seg>catchsegv, gencat, getconf, getent, iconv, iconvconfig, ldconfig,
|
---|
[5bf238b] | 503 | ldd, lddlibc4, locale, localedef, makedb, mtrace, nscd,
|
---|
[78cc3be] | 504 | pcprofiledump, pldd, sln, sotruss, sprof, tzselect, xtrace,
|
---|
[6a82dd9] | 505 | zdump, and zic</seg>
|
---|
[5ef820b] | 506 | <seg>ld-&glibc-version;.so, libBrokenLocale.{a,so}, libSegFault.so, libanl.{a,so},
|
---|
[78cc3be] | 507 | libc.{a,so}, libc_nonshared.a,
|
---|
| 508 | libcrypt.{a,so}, libdl.{a,so}, libg.a, libm.{a,so},
|
---|
| 509 | libmcheck.a, libmemusage.so, libmvec.{a,so}, libnsl.{a,so},
|
---|
| 510 | libnss_compat.so, libnss_dns.so, libnss_files.so, libnss_hesiod.so,
|
---|
| 511 | libpcprofile.so, libpthread.{a,so},
|
---|
| 512 | libpthread_nonshared.a, libresolv.{a,so}, librt.{a,so},
|
---|
[2791a8e] | 513 | libthread_db.so, and libutil.{a,so}</seg>
|
---|
[fe05b08] | 514 | <seg>/usr/include/arpa, /usr/include/bits, /usr/include/gnu,
|
---|
| 515 | /usr/include/net, /usr/include/netash, /usr/include/netatalk,
|
---|
| 516 | /usr/include/netax25, /usr/include/neteconet, /usr/include/netinet,
|
---|
| 517 | /usr/include/netipx, /usr/include/netiucv, /usr/include/netpacket,
|
---|
| 518 | /usr/include/netrom, /usr/include/netrose, /usr/include/nfs,
|
---|
[78cc3be] | 519 | /usr/include/protocols, /usr/include/rpc,
|
---|
[4028929] | 520 | /usr/include/sys, /usr/lib/audit, /usr/lib/gconv, /usr/lib/locale,
|
---|
| 521 | /usr/libexec/getconf, /usr/share/i18n, /usr/share/zoneinfo,
|
---|
[7bb9fda] | 522 | /var/cache/nscd, and /var/lib/nss_db</seg>
|
---|
[6a82dd9] | 523 | </seglistitem>
|
---|
| 524 | </segmentedlist>
|
---|
| 525 |
|
---|
| 526 | <variablelist>
|
---|
| 527 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
|
---|
| 528 | <?dbfo list-presentation="list"?>
|
---|
| 529 | <?dbhtml list-presentation="table"?>
|
---|
| 530 |
|
---|
| 531 | <varlistentry id="catchsegv">
|
---|
| 532 | <term><command>catchsegv</command></term>
|
---|
| 533 | <listitem>
|
---|
| 534 | <para>Can be used to create a stack trace when a program
|
---|
| 535 | terminates with a segmentation fault</para>
|
---|
| 536 | <indexterm zone="ch-system-glibc catchsegv">
|
---|
| 537 | <primary sortas="b-catchsegv">catchsegv</primary>
|
---|
| 538 | </indexterm>
|
---|
| 539 | </listitem>
|
---|
| 540 | </varlistentry>
|
---|
| 541 |
|
---|
| 542 | <varlistentry id="gencat">
|
---|
| 543 | <term><command>gencat</command></term>
|
---|
| 544 | <listitem>
|
---|
| 545 | <para>Generates message catalogues</para>
|
---|
| 546 | <indexterm zone="ch-system-glibc gencat">
|
---|
| 547 | <primary sortas="b-gencat">gencat</primary>
|
---|
| 548 | </indexterm>
|
---|
| 549 | </listitem>
|
---|
| 550 | </varlistentry>
|
---|
| 551 |
|
---|
| 552 | <varlistentry id="getconf">
|
---|
| 553 | <term><command>getconf</command></term>
|
---|
| 554 | <listitem>
|
---|
| 555 | <para>Displays the system configuration values for file system
|
---|
| 556 | specific variables</para>
|
---|
| 557 | <indexterm zone="ch-system-glibc getconf">
|
---|
| 558 | <primary sortas="b-getconf">getconf</primary>
|
---|
| 559 | </indexterm>
|
---|
| 560 | </listitem>
|
---|
| 561 | </varlistentry>
|
---|
| 562 |
|
---|
| 563 | <varlistentry id="getent">
|
---|
| 564 | <term><command>getent</command></term>
|
---|
| 565 | <listitem>
|
---|
| 566 | <para>Gets entries from an administrative database</para>
|
---|
| 567 | <indexterm zone="ch-system-glibc getent">
|
---|
| 568 | <primary sortas="b-getent">getent</primary>
|
---|
| 569 | </indexterm>
|
---|
| 570 | </listitem>
|
---|
| 571 | </varlistentry>
|
---|
| 572 |
|
---|
| 573 | <varlistentry id="iconv">
|
---|
| 574 | <term><command>iconv</command></term>
|
---|
| 575 | <listitem>
|
---|
| 576 | <para>Performs character set conversion</para>
|
---|
| 577 | <indexterm zone="ch-system-glibc iconv">
|
---|
| 578 | <primary sortas="b-iconv">iconv</primary>
|
---|
| 579 | </indexterm>
|
---|
| 580 | </listitem>
|
---|
| 581 | </varlistentry>
|
---|
| 582 |
|
---|
| 583 | <varlistentry id="iconvconfig">
|
---|
| 584 | <term><command>iconvconfig</command></term>
|
---|
| 585 | <listitem>
|
---|
| 586 | <para>Creates fastloading <command>iconv</command> module configuration
|
---|
| 587 | files</para>
|
---|
| 588 | <indexterm zone="ch-system-glibc iconvconfig">
|
---|
| 589 | <primary sortas="b-iconvconfig">iconvconfig</primary>
|
---|
| 590 | </indexterm>
|
---|
| 591 | </listitem>
|
---|
| 592 | </varlistentry>
|
---|
| 593 |
|
---|
| 594 | <varlistentry id="ldconfig">
|
---|
| 595 | <term><command>ldconfig</command></term>
|
---|
| 596 | <listitem>
|
---|
| 597 | <para>Configures the dynamic linker runtime bindings</para>
|
---|
| 598 | <indexterm zone="ch-system-glibc ldconfig">
|
---|
| 599 | <primary sortas="b-ldconfig">ldconfig</primary>
|
---|
| 600 | </indexterm>
|
---|
| 601 | </listitem>
|
---|
| 602 | </varlistentry>
|
---|
| 603 |
|
---|
| 604 | <varlistentry id="ldd">
|
---|
| 605 | <term><command>ldd</command></term>
|
---|
| 606 | <listitem>
|
---|
| 607 | <para>Reports which shared libraries are required
|
---|
| 608 | by each given program or shared library</para>
|
---|
| 609 | <indexterm zone="ch-system-glibc ldd">
|
---|
| 610 | <primary sortas="b-ldd">ldd</primary>
|
---|
| 611 | </indexterm>
|
---|
| 612 | </listitem>
|
---|
| 613 | </varlistentry>
|
---|
| 614 |
|
---|
| 615 | <varlistentry id="lddlibc4">
|
---|
| 616 | <term><command>lddlibc4</command></term>
|
---|
| 617 | <listitem>
|
---|
| 618 | <para>Assists <command>ldd</command> with object files</para>
|
---|
| 619 | <indexterm zone="ch-system-glibc lddlibc4">
|
---|
| 620 | <primary sortas="b-lddlibc4">lddlibc4</primary>
|
---|
| 621 | </indexterm>
|
---|
| 622 | </listitem>
|
---|
| 623 | </varlistentry>
|
---|
| 624 |
|
---|
| 625 | <varlistentry id="locale">
|
---|
| 626 | <term><command>locale</command></term>
|
---|
| 627 | <listitem>
|
---|
| 628 | <para>Prints various information about the current locale</para>
|
---|
| 629 | <indexterm zone="ch-system-glibc locale">
|
---|
| 630 | <primary sortas="b-locale">locale</primary>
|
---|
| 631 | </indexterm>
|
---|
| 632 | </listitem>
|
---|
| 633 | </varlistentry>
|
---|
| 634 |
|
---|
| 635 | <varlistentry id="localedef">
|
---|
| 636 | <term><command>localedef</command></term>
|
---|
| 637 | <listitem>
|
---|
| 638 | <para>Compiles locale specifications</para>
|
---|
| 639 | <indexterm zone="ch-system-glibc localedef">
|
---|
| 640 | <primary sortas="b-localedef">localedef</primary>
|
---|
| 641 | </indexterm>
|
---|
| 642 | </listitem>
|
---|
| 643 | </varlistentry>
|
---|
| 644 |
|
---|
[ca101ad] | 645 | <varlistentry id="makedb">
|
---|
| 646 | <term><command>makedb</command></term>
|
---|
| 647 | <listitem>
|
---|
| 648 | <para>Creates a simple database from textual input</para>
|
---|
| 649 | <indexterm zone="ch-system-glibc makedb">
|
---|
| 650 | <primary sortas="b-makedb">makedb</primary>
|
---|
| 651 | </indexterm>
|
---|
| 652 | </listitem>
|
---|
| 653 | </varlistentry>
|
---|
| 654 |
|
---|
[6a82dd9] | 655 | <varlistentry id="mtrace">
|
---|
| 656 | <term><command>mtrace</command></term>
|
---|
| 657 | <listitem>
|
---|
| 658 | <para>Reads and interprets a memory trace file and displays a summary
|
---|
| 659 | in human-readable format</para>
|
---|
| 660 | <indexterm zone="ch-system-glibc mtrace">
|
---|
| 661 | <primary sortas="b-mtrace">mtrace</primary>
|
---|
| 662 | </indexterm>
|
---|
| 663 | </listitem>
|
---|
| 664 | </varlistentry>
|
---|
| 665 |
|
---|
| 666 | <varlistentry id="nscd">
|
---|
| 667 | <term><command>nscd</command></term>
|
---|
| 668 | <listitem>
|
---|
| 669 | <para>A daemon that provides a cache for the most common name
|
---|
| 670 | service requests</para>
|
---|
| 671 | <indexterm zone="ch-system-glibc nscd">
|
---|
| 672 | <primary sortas="b-nscd">nscd</primary>
|
---|
| 673 | </indexterm>
|
---|
| 674 | </listitem>
|
---|
| 675 | </varlistentry>
|
---|
[1118b17] | 676 |
|
---|
[78cc3be] | 677 | <varlistentry id="pcprofiledump">
|
---|
| 678 | <term><command>pcprofiledump</command></term>
|
---|
| 679 | <listitem>
|
---|
| 680 | <para>Dump information generated by PC profiling</para>
|
---|
| 681 | <indexterm zone="ch-system-glibc pcprofiledump">
|
---|
| 682 | <primary sortas="b-pcprofiledump">pcprofiledump</primary>
|
---|
| 683 | </indexterm>
|
---|
| 684 | </listitem>
|
---|
| 685 | </varlistentry>
|
---|
| 686 |
|
---|
[ca101ad] | 687 | <varlistentry id="pldd">
|
---|
| 688 | <term><command>pldd</command></term>
|
---|
| 689 | <listitem>
|
---|
| 690 | <para>Lists dynamic shared objects used by running processes</para>
|
---|
| 691 | <indexterm zone="ch-system-glibc pldd">
|
---|
| 692 | <primary sortas="b-pldd">pldd</primary>
|
---|
| 693 | </indexterm>
|
---|
| 694 | </listitem>
|
---|
| 695 | </varlistentry>
|
---|
[1118b17] | 696 |
|
---|
[6a82dd9] | 697 | <varlistentry id="sln">
|
---|
| 698 | <term><command>sln</command></term>
|
---|
| 699 | <listitem>
|
---|
| 700 | <para>A statically linked <command>ln</command> program</para>
|
---|
| 701 | <indexterm zone="ch-system-glibc sln">
|
---|
| 702 | <primary sortas="b-sln">sln</primary>
|
---|
| 703 | </indexterm>
|
---|
| 704 | </listitem>
|
---|
| 705 | </varlistentry>
|
---|
| 706 |
|
---|
[3119ddc] | 707 | <varlistentry id="sotruss">
|
---|
| 708 | <term><command>sotruss</command></term>
|
---|
| 709 | <listitem>
|
---|
| 710 | <para>Traces shared library procedure calls of a specified command</para>
|
---|
| 711 | <indexterm zone="ch-system-glibc sotruss">
|
---|
| 712 | <primary sortas="b-sotruss">sotruss</primary>
|
---|
| 713 | </indexterm>
|
---|
| 714 | </listitem>
|
---|
| 715 | </varlistentry>
|
---|
| 716 |
|
---|
[6a82dd9] | 717 | <varlistentry id="sprof">
|
---|
| 718 | <term><command>sprof</command></term>
|
---|
| 719 | <listitem>
|
---|
| 720 | <para>Reads and displays shared object profiling data</para>
|
---|
| 721 | <indexterm zone="ch-system-glibc sprof">
|
---|
| 722 | <primary sortas="b-sprof">sprof</primary>
|
---|
| 723 | </indexterm>
|
---|
| 724 | </listitem>
|
---|
| 725 | </varlistentry>
|
---|
| 726 |
|
---|
| 727 | <varlistentry id="tzselect">
|
---|
| 728 | <term><command>tzselect</command></term>
|
---|
| 729 | <listitem>
|
---|
| 730 | <para>Asks the user about the location of the system and reports
|
---|
| 731 | the corresponding time zone description</para>
|
---|
| 732 | <indexterm zone="ch-system-glibc tzselect">
|
---|
| 733 | <primary sortas="b-tzselect">tzselect</primary>
|
---|
| 734 | </indexterm>
|
---|
| 735 | </listitem>
|
---|
| 736 | </varlistentry>
|
---|
| 737 |
|
---|
| 738 | <varlistentry id="xtrace">
|
---|
| 739 | <term><command>xtrace</command></term>
|
---|
| 740 | <listitem>
|
---|
| 741 | <para>Traces the execution of a program by printing the currently
|
---|
| 742 | executed function</para>
|
---|
| 743 | <indexterm zone="ch-system-glibc xtrace">
|
---|
| 744 | <primary sortas="b-xtrace">xtrace</primary>
|
---|
| 745 | </indexterm>
|
---|
| 746 | </listitem>
|
---|
| 747 | </varlistentry>
|
---|
| 748 |
|
---|
| 749 | <varlistentry id="zdump">
|
---|
| 750 | <term><command>zdump</command></term>
|
---|
| 751 | <listitem>
|
---|
| 752 | <para>The time zone dumper</para>
|
---|
| 753 | <indexterm zone="ch-system-glibc zdump">
|
---|
| 754 | <primary sortas="b-zdump">zdump</primary>
|
---|
| 755 | </indexterm>
|
---|
| 756 | </listitem>
|
---|
| 757 | </varlistentry>
|
---|
| 758 |
|
---|
| 759 | <varlistentry id="zic">
|
---|
| 760 | <term><command>zic</command></term>
|
---|
| 761 | <listitem>
|
---|
| 762 | <para>The time zone compiler</para>
|
---|
| 763 | <indexterm zone="ch-system-glibc zic">
|
---|
| 764 | <primary sortas="b-zic">zic</primary>
|
---|
| 765 | </indexterm>
|
---|
| 766 | </listitem>
|
---|
| 767 | </varlistentry>
|
---|
| 768 |
|
---|
| 769 | <varlistentry id="ld.so">
|
---|
[5ef820b] | 770 | <term><filename class="libraryfile">ld-&glibc-version;.so</filename></term>
|
---|
[6a82dd9] | 771 | <listitem>
|
---|
| 772 | <para>The helper program for shared library executables</para>
|
---|
| 773 | <indexterm zone="ch-system-glibc ld.so">
|
---|
[5ef820b] | 774 | <primary sortas="c-ld.so">ld-&glibc-version;.so</primary>
|
---|
[6a82dd9] | 775 | </indexterm>
|
---|
| 776 | </listitem>
|
---|
| 777 | </varlistentry>
|
---|
| 778 |
|
---|
| 779 | <varlistentry id="libBrokenLocale">
|
---|
| 780 | <term><filename class="libraryfile">libBrokenLocale</filename></term>
|
---|
| 781 | <listitem>
|
---|
| 782 | <para>Used internally by Glibc as a gross hack to get broken programs
|
---|
| 783 | (e.g., some Motif applications) running. See comments in
|
---|
| 784 | <filename>glibc-&glibc-version;/locale/broken_cur_max.c</filename>
|
---|
| 785 | for more information</para>
|
---|
| 786 | <indexterm zone="ch-system-glibc libBrokenLocale">
|
---|
| 787 | <primary sortas="c-libBrokenLocale">libBrokenLocale</primary>
|
---|
| 788 | </indexterm>
|
---|
| 789 | </listitem>
|
---|
| 790 | </varlistentry>
|
---|
| 791 |
|
---|
| 792 | <varlistentry id="libSegFault">
|
---|
| 793 | <term><filename class="libraryfile">libSegFault</filename></term>
|
---|
| 794 | <listitem>
|
---|
| 795 | <para>The segmentation fault signal handler, used by
|
---|
| 796 | <command>catchsegv</command></para>
|
---|
| 797 | <indexterm zone="ch-system-glibc libSegFault">
|
---|
| 798 | <primary sortas="c-libSegFault">libSegFault</primary>
|
---|
| 799 | </indexterm>
|
---|
| 800 | </listitem>
|
---|
| 801 | </varlistentry>
|
---|
| 802 |
|
---|
| 803 | <varlistentry id="libanl">
|
---|
| 804 | <term><filename class="libraryfile">libanl</filename></term>
|
---|
| 805 | <listitem>
|
---|
| 806 | <para>An asynchronous name lookup library</para>
|
---|
| 807 | <indexterm zone="ch-system-glibc libanl">
|
---|
| 808 | <primary sortas="c-libanl">libanl</primary>
|
---|
| 809 | </indexterm>
|
---|
| 810 | </listitem>
|
---|
| 811 | </varlistentry>
|
---|
| 812 |
|
---|
| 813 | <varlistentry id="libc">
|
---|
| 814 | <term><filename class="libraryfile">libc</filename></term>
|
---|
| 815 | <listitem>
|
---|
| 816 | <para>The main C library</para>
|
---|
| 817 | <indexterm zone="ch-system-glibc libc">
|
---|
| 818 | <primary sortas="c-libc">libc</primary>
|
---|
| 819 | </indexterm>
|
---|
| 820 | </listitem>
|
---|
| 821 | </varlistentry>
|
---|
| 822 |
|
---|
| 823 | <varlistentry id="libcrypt">
|
---|
| 824 | <term><filename class="libraryfile">libcrypt</filename></term>
|
---|
| 825 | <listitem>
|
---|
| 826 | <para>The cryptography library</para>
|
---|
| 827 | <indexterm zone="ch-system-glibc libcrypt">
|
---|
| 828 | <primary sortas="c-libcrypt">libcrypt</primary>
|
---|
| 829 | </indexterm>
|
---|
| 830 | </listitem>
|
---|
| 831 | </varlistentry>
|
---|
| 832 |
|
---|
| 833 | <varlistentry id="libdl">
|
---|
| 834 | <term><filename class="libraryfile">libdl</filename></term>
|
---|
| 835 | <listitem>
|
---|
| 836 | <para>The dynamic linking interface library</para>
|
---|
| 837 | <indexterm zone="ch-system-glibc libdl">
|
---|
| 838 | <primary sortas="c-libdl">libdl</primary>
|
---|
| 839 | </indexterm>
|
---|
| 840 | </listitem>
|
---|
| 841 | </varlistentry>
|
---|
| 842 |
|
---|
| 843 | <varlistentry id="libg">
|
---|
| 844 | <term><filename class="libraryfile">libg</filename></term>
|
---|
| 845 | <listitem>
|
---|
| 846 | <para>Dummy library containing no functions. Previously was a runtime
|
---|
| 847 | library for <command>g++</command></para>
|
---|
| 848 | <indexterm zone="ch-system-glibc libg">
|
---|
| 849 | <primary sortas="c-libg">libg</primary>
|
---|
| 850 | </indexterm>
|
---|
| 851 | </listitem>
|
---|
| 852 | </varlistentry>
|
---|
| 853 |
|
---|
| 854 | <varlistentry id="libm">
|
---|
| 855 | <term><filename class="libraryfile">libm</filename></term>
|
---|
| 856 | <listitem>
|
---|
| 857 | <para>The mathematical library</para>
|
---|
| 858 | <indexterm zone="ch-system-glibc libm">
|
---|
| 859 | <primary sortas="c-libm">libm</primary>
|
---|
| 860 | </indexterm>
|
---|
| 861 | </listitem>
|
---|
| 862 | </varlistentry>
|
---|
| 863 |
|
---|
| 864 | <varlistentry id="libmcheck">
|
---|
| 865 | <term><filename class="libraryfile">libmcheck</filename></term>
|
---|
| 866 | <listitem>
|
---|
| 867 | <para>Turns on memory allocation checking when linked to</para>
|
---|
| 868 | <indexterm zone="ch-system-glibc libmcheck">
|
---|
| 869 | <primary sortas="c-libmcheck">libmcheck</primary>
|
---|
| 870 | </indexterm>
|
---|
| 871 | </listitem>
|
---|
| 872 | </varlistentry>
|
---|
| 873 |
|
---|
| 874 | <varlistentry id="libmemusage">
|
---|
| 875 | <term><filename class="libraryfile">libmemusage</filename></term>
|
---|
| 876 | <listitem>
|
---|
| 877 | <para>Used by <command>memusage</command> to help collect
|
---|
| 878 | information about the memory usage of a program</para>
|
---|
| 879 | <indexterm zone="ch-system-glibc libmemusage">
|
---|
| 880 | <primary sortas="c-libmemusage">libmemusage</primary>
|
---|
| 881 | </indexterm>
|
---|
| 882 | </listitem>
|
---|
| 883 | </varlistentry>
|
---|
| 884 |
|
---|
| 885 | <varlistentry id="libnsl">
|
---|
| 886 | <term><filename class="libraryfile">libnsl</filename></term>
|
---|
| 887 | <listitem>
|
---|
| 888 | <para>The network services library</para>
|
---|
| 889 | <indexterm zone="ch-system-glibc libnsl">
|
---|
| 890 | <primary sortas="c-libnsl">libnsl</primary>
|
---|
| 891 | </indexterm>
|
---|
| 892 | </listitem>
|
---|
| 893 | </varlistentry>
|
---|
| 894 |
|
---|
| 895 | <varlistentry id="libnss">
|
---|
| 896 | <term><filename class="libraryfile">libnss</filename></term>
|
---|
| 897 | <listitem>
|
---|
| 898 | <para>The Name Service Switch libraries, containing functions for
|
---|
| 899 | resolving host names, user names, group names, aliases, services,
|
---|
| 900 | protocols, etc.</para>
|
---|
| 901 | <indexterm zone="ch-system-glibc libnss">
|
---|
| 902 | <primary sortas="c-libnss">libnss</primary>
|
---|
| 903 | </indexterm>
|
---|
| 904 | </listitem>
|
---|
| 905 | </varlistentry>
|
---|
[1118b17] | 906 |
|
---|
[78cc3be] | 907 | <varlistentry id="libpcprofile">
|
---|
| 908 | <term><filename class="libraryfile">libpcprofile</filename></term>
|
---|
| 909 | <listitem>
|
---|
| 910 | <para>Can be preloaded to PC profile an executable</para>
|
---|
| 911 | <indexterm zone="ch-system-glibc libpcprofile">
|
---|
| 912 | <primary sortas="c-libpcprofile">libpcprofile</primary>
|
---|
| 913 | </indexterm>
|
---|
| 914 | </listitem>
|
---|
| 915 | </varlistentry>
|
---|
| 916 |
|
---|
[6a82dd9] | 917 | <varlistentry id="libpthread">
|
---|
| 918 | <term><filename class="libraryfile">libpthread</filename></term>
|
---|
| 919 | <listitem>
|
---|
| 920 | <para>The POSIX threads library</para>
|
---|
| 921 | <indexterm zone="ch-system-glibc libpthread">
|
---|
| 922 | <primary sortas="c-libpthread">libpthread</primary>
|
---|
| 923 | </indexterm>
|
---|
| 924 | </listitem>
|
---|
| 925 | </varlistentry>
|
---|
| 926 |
|
---|
| 927 | <varlistentry id="libresolv">
|
---|
| 928 | <term><filename class="libraryfile">libresolv</filename></term>
|
---|
| 929 | <listitem>
|
---|
| 930 | <para>Contains functions for creating, sending, and interpreting
|
---|
| 931 | packets to the Internet domain name servers</para>
|
---|
| 932 | <indexterm zone="ch-system-glibc libresolv">
|
---|
| 933 | <primary sortas="c-libresolv">libresolv</primary>
|
---|
| 934 | </indexterm>
|
---|
| 935 | </listitem>
|
---|
| 936 | </varlistentry>
|
---|
| 937 |
|
---|
| 938 | <varlistentry id="librt">
|
---|
| 939 | <term><filename class="libraryfile">librt</filename></term>
|
---|
| 940 | <listitem>
|
---|
| 941 | <para>Contains functions providing most of the interfaces specified
|
---|
| 942 | by the POSIX.1b Realtime Extension</para>
|
---|
| 943 | <indexterm zone="ch-system-glibc librt">
|
---|
| 944 | <primary sortas="c-librt">librt</primary>
|
---|
| 945 | </indexterm>
|
---|
| 946 | </listitem>
|
---|
| 947 | </varlistentry>
|
---|
| 948 |
|
---|
| 949 | <varlistentry id="libthread_db">
|
---|
| 950 | <term><filename class="libraryfile">libthread_db</filename></term>
|
---|
| 951 | <listitem>
|
---|
| 952 | <para>Contains functions useful for building debuggers for
|
---|
| 953 | multi-threaded programs</para>
|
---|
| 954 | <indexterm zone="ch-system-glibc libthread_db">
|
---|
| 955 | <primary sortas="c-libthread_db">libthread_db</primary>
|
---|
| 956 | </indexterm>
|
---|
| 957 | </listitem>
|
---|
| 958 | </varlistentry>
|
---|
| 959 |
|
---|
| 960 | <varlistentry id="libutil">
|
---|
| 961 | <term><filename class="libraryfile">libutil</filename></term>
|
---|
| 962 | <listitem>
|
---|
| 963 | <para>Contains code for <quote>standard</quote> functions used in
|
---|
| 964 | many different Unix utilities</para>
|
---|
| 965 | <indexterm zone="ch-system-glibc libutil">
|
---|
| 966 | <primary sortas="c-libutil">libutil</primary>
|
---|
| 967 | </indexterm>
|
---|
| 968 | </listitem>
|
---|
| 969 | </varlistentry>
|
---|
| 970 |
|
---|
| 971 | </variablelist>
|
---|
| 972 |
|
---|
| 973 | </sect2>
|
---|
[673b0d8] | 974 |
|
---|
| 975 | </sect1>
|
---|