1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
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3 | <!ENTITY % general-entities SYSTEM "../general.ent">
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4 | %general-entities;
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5 | ]>
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6 | <sect1 id="ch-system-glibc" role="wrap">
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7 | <title>Glibc-&glibc-version;</title>
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8 | <?dbhtml filename="glibc.html"?>
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9 |
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10 | <indexterm zone="ch-system-glibc"><primary sortas="a-Glibc">Glibc</primary></indexterm>
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11 |
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12 | <sect2 role="package"><title/>
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13 | <para>The Glibc package contains the main C library. This library provides
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14 | the basic routines for allocating memory, searching directories, opening and
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15 | closing files, reading and writing files, string handling, pattern matching,
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16 | arithmetic, and so on.</para>
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17 |
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18 | <segmentedlist>
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19 | <segtitle>&buildtime;</segtitle>
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20 | <segtitle>&diskspace;</segtitle>
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21 | <seglistitem><seg>12.3 SBU</seg><seg>476</seg></seglistitem>
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22 | </segmentedlist>
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23 |
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24 | <segmentedlist>
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25 | <segtitle>&dependencies;</segtitle>
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26 | <seglistitem><seg>Bash, Binutils, Coreutils, Diffutils,
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27 | Gawk, GCC, Gettext, Grep, Make, Perl, Sed, and Texinfo</seg></seglistitem>
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28 | </segmentedlist>
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29 | </sect2>
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30 |
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31 | <sect2 role="installation">
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32 | <title>Installation of Glibc</title>
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33 |
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34 | <para>This package is known to have issues when its default
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35 | optimization flags (including the <parameter>-march</parameter> and
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36 | <parameter>-mcpu</parameter> options) are changed. If any environment
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37 | variables that override default optimizations have been defined, such
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38 | as <envar>CFLAGS</envar> and <envar>CXXFLAGS</envar>,
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39 | unset them when building Glibc.</para>
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40 |
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41 | <para>The Glibc build system is self-contained and will install
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42 | perfectly, even though the compiler specs file and linker are still
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43 | pointing at <filename class="directory">/tools</filename>. The specs
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44 | and linker cannot be adjusted before the Glibc install because the
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45 | Glibc autoconf tests would give false results and defeat the goal
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46 | of achieving a clean build.</para>
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47 |
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48 | <para>The linuxthreads tarball contains the man pages for the
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49 | threading libraries installed by Glibc. Unpack the tarball from
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50 | within the Glibc source directory:</para>
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51 |
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52 | <screen><userinput>tar -xjvf /sources/glibc-linuxthreads-&glibc-version;.tar.bz2</userinput></screen>
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53 |
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54 | <para>Glibc has two tests which fail when the running kernel is 2.6.11.x The
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55 | problem has been determined to be with the tests themselves, not with the libc
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56 | nor the kernel. This patch fixes the problem:</para>
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57 |
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58 | <screen><userinput>patch -Np1 -i ../glibc-&glibc-version;-fix_test-1.patch</userinput></screen>
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59 |
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60 | <para>The Glibc documentation recommends building Glibc outside of the source
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61 | directory in a dedicated build directory:</para>
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62 |
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63 | <screen><userinput>mkdir ../glibc-build
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64 | cd ../glibc-build</userinput></screen>
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65 |
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66 | <para>Prepare Glibc for compilation:</para>
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67 |
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68 | <screen><userinput>../glibc-&glibc-version;/configure --prefix=/usr \
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69 | --disable-profile --enable-add-ons \
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70 | --enable-kernel=2.6.0 --libexecdir=/usr/lib/glibc</userinput></screen>
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71 |
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72 | <para>The meaning of the new configure options:</para>
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73 |
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74 | <variablelist>
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75 | <varlistentry>
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76 | <term><parameter>--libexecdir=/usr/lib/glibc</parameter></term>
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77 | <listitem><para>This changes the location of the
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78 | <command>pt_chown</command> program from its default of <filename
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79 | class="directory">/usr/libexec</filename> to <filename
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80 | class="directory">/usr/lib/glibc</filename>.</para></listitem>
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81 | </varlistentry>
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82 | </variablelist>
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83 |
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84 | <beginpage/>
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85 |
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86 | <para>Compile the package:</para>
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87 |
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88 | <screen><userinput>make</userinput></screen>
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89 |
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90 | <important><para>In this section, the test suite for Glibc is
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91 | considered critical. Do not skip it under any
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92 | circumstance.</para></important>
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93 |
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94 | <para>Test the results:</para>
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95 |
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96 | <screen><userinput>make check</userinput></screen>
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97 |
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98 | <para>The Glibc test suite is highly dependent on certain functions of
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99 | the host system, in particular the kernel. In general, the Glibc test
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100 | suite is always expected to pass. However, in certain circumstances,
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101 | some failures are unavoidable. This is a list of the most common
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102 | issues:</para>
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103 |
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104 | <itemizedlist>
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105 | <listitem><para>The <emphasis>math</emphasis> tests sometimes fail when running
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106 | on systems where the CPU is not a relatively new genuine Intel or authentic AMD.
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107 | Certain optimization settings are also known to be a factor here.</para></listitem>
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108 |
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109 | <listitem><para>The <emphasis>gettext</emphasis> test sometimes fails due to
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110 | host system issues. The exact reasons are not yet clear.</para></listitem>
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111 |
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112 | <listitem><para>The <emphasis>atime</emphasis> test sometimes fails
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113 | when the LFS partition is mounted with the
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114 | <parameter>noatime</parameter> option.</para></listitem>
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115 |
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116 | <listitem><para>The <emphasis>shm</emphasis> test can fail when the
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117 | host system is using the <systemitem
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118 | class="filesystem">devfs</systemitem> file system but does not have
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119 | the <systemitem class="filesystem">tmpfs</systemitem> file system
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120 | mounted at <filename class="directory">/dev/shm</filename>. This
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121 | occurs because of a lack of support for <systemitem
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122 | class="filesystem">tmpfs</systemitem> in the
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123 | kernel.</para></listitem>
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124 |
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125 | <listitem><para>When running on older and slower hardware, some tests
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126 | can fail because of test timeouts being exceeded.</para></listitem>
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127 | </itemizedlist>
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128 |
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129 | <para>Though it is a harmless message, the install stage of Glibc will
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130 | complain about the absence of <filename>/etc/ld.so.conf</filename>.
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131 | Prevent this warning with:</para>
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132 |
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133 | <screen><userinput>touch /etc/ld.so.conf</userinput></screen>
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134 |
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135 | <para>Install the package:</para>
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136 |
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137 | <screen><userinput>make install</userinput></screen>
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138 |
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139 | <para>The locales that can make the system respond in a different
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140 | language were not installed by the above command. Install this
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141 | with:</para>
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142 |
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143 | <screen><userinput>make localedata/install-locales</userinput></screen>
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144 |
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145 | <beginpage/>
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146 |
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147 | <para>To save time, an alternative to running the
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148 | previous command (which generates and installs every locale Glibc is
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149 | aware of) is to install only those locales that are wanted and needed.
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150 | This can be achieved by using the <command>localedef</command>
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151 | command. Information on this command is located in the
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152 | <filename>INSTALL</filename> file in the Glibc source. However, there
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153 | are a number of locales that are essential in order for the tests of
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154 | future packages to pass, in particular, the
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155 | <emphasis>libstdc++</emphasis> tests from GCC. The following
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156 | instructions, instead of the <parameter>install-locales</parameter>
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157 | target used above, will install the minimum set of locales necessary
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158 | for the tests to run successfully:</para>
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159 |
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160 | <screen><userinput>mkdir -p /usr/lib/locale
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161 | localedef -i de_DE -f ISO-8859-1 de_DE
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162 | localedef -i de_DE@euro -f ISO-8859-15 de_DE@euro
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163 | localedef -i en_HK -f ISO-8859-1 en_HK
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164 | localedef -i en_PH -f ISO-8859-1 en_PH
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165 | localedef -i en_US -f ISO-8859-1 en_US
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166 | localedef -i es_MX -f ISO-8859-1 es_MX
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167 | localedef -i fa_IR -f UTF-8 fa_IR
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168 | localedef -i fr_FR -f ISO-8859-1 fr_FR
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169 | localedef -i fr_FR@euro -f ISO-8859-15 fr_FR@euro
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170 | localedef -i it_IT -f ISO-8859-1 it_IT
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171 | localedef -i ja_JP -f EUC-JP ja_JP</userinput></screen>
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172 |
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173 | <para>Some locales installed by the <command>make
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174 | localedata/install-locales</command> command above are not properly
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175 | supported by some applications that are in the LFS and BLFS books.
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176 | Because of the various problems that arise due to application
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177 | programmers making assumptions that break in such locales, LFS should
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178 | not be used in locales that utilize multibyte character sets
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179 | (including UTF-8) or right-to-left writing order. Numerous unofficial
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180 | and unstable patches are required to fix these problems, and it has
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181 | been decided by the LFS developers not to support such complex locales. This applies to the
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182 | ja_JP and fa_IR locales as well—they have been installed only for
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183 | GCC and Gettext tests to pass, and the <command>watch</command> program
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184 | (part of the Procps package) does not work properly in them. Various
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185 | attempts to circumvent these restrictions are documented in
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186 | internationalization-related hints.</para>
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187 |
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188 | <para>Build the linuxthreads man pages, which are a great reference
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189 | on the threading API (applicable to NPTL as well):</para>
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190 |
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191 | <screen><userinput>make -C ../glibc-&glibc-version;/linuxthreads/man</userinput></screen>
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192 |
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193 | <para>Install these pages:</para>
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194 |
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195 | <screen><userinput>make -C ../glibc-&glibc-version;/linuxthreads/man install</userinput></screen>
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196 |
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197 | <beginpage/>
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198 |
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199 | </sect2>
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200 |
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201 | <sect2 id="conf-glibc" role="configuration"><title>Configuring Glibc</title>
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202 | <indexterm zone="conf-glibc"><primary sortas="e-/etc/nsswitch.conf">/etc/nsswitch.conf</primary></indexterm>
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203 | <indexterm zone="conf-glibc"><primary sortas="e-/etc/localtime">/etc/localtime</primary></indexterm>
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204 |
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205 | <para>The <filename>/etc/nsswitch.conf</filename> file needs to be
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206 | created because, although Glibc provides defaults when this file is
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207 | missing or corrupt, the Glibc defaults do not work well with
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208 | networking. The time zone also needs to be set up.</para>
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209 |
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210 | <para>Create a new file <filename>/etc/nsswitch.conf</filename> by running the
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211 | following:</para>
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212 |
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213 | <screen><userinput>cat > /etc/nsswitch.conf << "EOF"
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214 | <literal># Begin /etc/nsswitch.conf
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215 |
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216 | passwd: files
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217 | group: files
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218 | shadow: files
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219 |
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220 | hosts: files dns
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221 | networks: files
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222 |
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223 | protocols: files
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224 | services: files
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225 | ethers: files
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226 | rpc: files
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227 |
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228 | # End /etc/nsswitch.conf</literal>
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229 | EOF</userinput></screen>
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230 |
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231 | <para>To determine the local time zone, run the following script:</para>
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232 |
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233 | <screen><userinput>tzselect</userinput></screen>
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234 |
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235 | <para>After answering a few questions about the location, the script
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236 | will output the name of the time zone (e.g.,
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237 | <emphasis>EST5EDT</emphasis> or <emphasis>Canada/Eastern</emphasis>).
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238 | Then create the <filename>/etc/localtime</filename> file by
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239 | running:</para>
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240 |
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241 | <screen><userinput>cp --remove-destination /usr/share/zoneinfo/<replaceable>[xxx]</replaceable> \
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242 | /etc/localtime</userinput></screen>
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243 |
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244 | <para>Replace <replaceable>[xxx]</replaceable> with the name of the time zone that the
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245 | <command>tzselect</command> provided (e.g., Canada/Eastern).</para>
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246 |
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247 | <para>The meaning of the cp option:</para>
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248 |
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249 | <variablelist>
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250 | <varlistentry>
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251 | <term><parameter>--remove-destination</parameter></term>
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252 | <listitem><para>This is needed to force removal of the already
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253 | existing symbolic link. The reason for copying the file instead of
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254 | using a symlink is to cover the situation where <filename
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255 | class="directory">/usr</filename> is on a separate partition. This
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256 | could be important when booted into single user
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257 | mode.</para></listitem>
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258 | </varlistentry>
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259 | </variablelist>
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260 |
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261 | <beginpage/>
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262 |
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263 | </sect2>
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264 |
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265 | <sect2 id="conf-ld" role="configuration">
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266 | <title>Configuring Dynamic Loader</title>
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267 | <indexterm zone="conf-ld"><primary sortas="e-/etc/ld.so.conf">/etc/ld.so.conf</primary></indexterm>
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268 |
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269 | <para>By default, the dynamic loader (<filename
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270 | class="libraryfile">/lib/ld-linux.so.2</filename>) searches through
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271 | <filename class="directory">/lib</filename> and <filename
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272 | class="directory">/usr/lib</filename> for dynamic libraries that are
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273 | needed by programs as they are run. However, if there are libraries in
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274 | directories other than <filename class="directory">/lib</filename> and
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275 | <filename class="directory">/usr/lib</filename>, these need to be
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276 | added to the <filename>/etc/ld.so.conf</filename> file in order
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277 | for the dynamic loader to find them. Two directories that are commonly
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278 | known to contain additional libraries are <filename
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279 | class="directory">/usr/local/lib</filename> and <filename
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280 | class="directory">/opt/lib</filename>, so add those directories to the
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281 | dynamic loader's search path.</para>
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282 |
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283 | <para>Create a new file <filename>/etc/ld.so.conf</filename> by running the
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284 | following:</para>
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285 |
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286 | <screen><userinput>cat > /etc/ld.so.conf << "EOF"
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287 | <literal># Begin /etc/ld.so.conf
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288 |
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289 | /usr/local/lib
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290 | /opt/lib
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291 |
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292 | # End /etc/ld.so.conf</literal>
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293 | EOF</userinput></screen>
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294 |
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295 | </sect2>
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296 |
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297 | <sect2 id="contents-glibc" role="content"><title>Contents of Glibc</title>
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298 |
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299 | <segmentedlist>
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300 | <segtitle>Installed programs</segtitle>
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301 | <segtitle>Installed libraries</segtitle>
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302 | <seglistitem><seg>catchsegv, gencat, getconf,
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303 | getent, iconv, iconvconfig, ldconfig, ldd, lddlibc4, locale,
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304 | localedef, mtrace, nscd, nscd_nischeck, pcprofiledump, pt_chown, rpcgen,
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305 | rpcinfo, sln, sprof, tzselect, xtrace, zdump, and zic</seg>
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306 | <seg>ld.so, libBrokenLocale.[a,so],
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307 | libSegFault.so, libanl.[a,so], libbsd-compat.a, libc.[a,so],
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308 | libcrypt.[a,so], libdl.[a,so], libg.a, libieee.a, libm.[a,so], libmcheck.a,
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309 | libmemusage.so, libnsl.a, libnss_compat.so, libnss_dns.so, libnss_files.so,
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310 | libnss_hesiod.so, libnss_nis.so, libnss_nisplus.so, libpcprofile.so,
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311 | libpthread.[a,so], libresolv.[a,so], librpcsvc.a, librt.[a,so],
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312 | libthread_db.so, and libutil.[a,so]</seg></seglistitem>
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313 | </segmentedlist>
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314 |
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315 | <variablelist><bridgehead renderas="sect3">Short Descriptions</bridgehead>
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316 | <?dbfo list-presentation="list"?>
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317 | <?dbhtml list-presentation="table"?>
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318 |
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319 | <varlistentry id="catchsegv">
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320 | <term><command>catchsegv</command></term>
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321 | <listitem>
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322 | <para>Can be used to create a stack trace when a program
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323 | terminates with a segmentation fault</para>
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324 | <indexterm zone="ch-system-glibc catchsegv"><primary sortas="b-catchsegv">catchsegv</primary></indexterm>
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325 | </listitem>
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326 | </varlistentry>
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327 |
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328 | <varlistentry id="gencat">
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329 | <term><command>gencat</command></term>
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330 | <listitem>
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331 | <para>Generates message catalogues</para>
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332 | <indexterm zone="ch-system-glibc gencat"><primary sortas="b-gencat">gencat</primary></indexterm>
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333 | </listitem>
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334 | </varlistentry>
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335 |
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336 | <varlistentry id="getconf">
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337 | <term><command>getconf</command></term>
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338 | <listitem>
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339 | <para>Displays the system configuration values for file system specific variables</para>
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340 | <indexterm zone="ch-system-glibc getconf"><primary sortas="b-getconf">getconf</primary></indexterm>
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341 | </listitem>
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342 | </varlistentry>
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343 |
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344 | <varlistentry id="getent">
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345 | <term><command>getent</command></term>
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346 | <listitem>
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347 | <para>Gets entries from an administrative database</para>
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348 | <indexterm zone="ch-system-glibc getent"><primary sortas="b-getent">getent</primary></indexterm>
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349 | </listitem>
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350 | </varlistentry>
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351 |
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352 | <varlistentry id="iconv">
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353 | <term><command>iconv</command></term>
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354 | <listitem>
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355 | <para>Performs character set conversion</para>
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356 | <indexterm zone="ch-system-glibc iconv"><primary sortas="b-iconv">iconv</primary></indexterm>
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357 | </listitem>
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358 | </varlistentry>
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359 |
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360 | <varlistentry id="iconvconfig">
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361 | <term><command>iconvconfig</command></term>
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362 | <listitem>
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363 | <para>Creates fastloading <command>iconv</command> module configuration files</para>
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364 | <indexterm zone="ch-system-glibc iconvconfig"><primary sortas="b-iconvconfig">iconvconfig</primary></indexterm>
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365 | </listitem>
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366 | </varlistentry>
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367 |
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368 | <varlistentry id="ldconfig">
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369 | <term><command>ldconfig</command></term>
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370 | <listitem>
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371 | <para>Configures the dynamic linker runtime bindings</para>
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372 | <indexterm zone="ch-system-glibc ldconfig"><primary sortas="b-ldconfig">ldconfig</primary></indexterm>
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373 | </listitem>
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374 | </varlistentry>
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375 |
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376 | <varlistentry id="ldd">
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377 | <term><command>ldd</command></term>
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378 | <listitem>
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379 | <para>Reports which shared libraries are required
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380 | by each given program or shared library</para>
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381 | <indexterm zone="ch-system-glibc ldd"><primary sortas="b-ldd">ldd</primary></indexterm>
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382 | </listitem>
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383 | </varlistentry>
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384 |
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385 | <varlistentry id="lddlibc4">
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386 | <term><command>lddlibc4</command></term>
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387 | <listitem>
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388 | <para>Assists <command>ldd</command> with object files</para>
|
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389 | <indexterm zone="ch-system-glibc lddlibc4"><primary sortas="b-lddlibc4">lddlibc4</primary></indexterm>
|
---|
390 | </listitem>
|
---|
391 | </varlistentry>
|
---|
392 |
|
---|
393 | <varlistentry id="locale">
|
---|
394 | <term><command>locale</command></term>
|
---|
395 | <listitem>
|
---|
396 | <para>Tells the compiler to enable or disable the use of POSIX locales
|
---|
397 | for built-in operations</para>
|
---|
398 | <indexterm zone="ch-system-glibc locale"><primary sortas="b-locale">locale</primary></indexterm>
|
---|
399 | </listitem>
|
---|
400 | </varlistentry>
|
---|
401 |
|
---|
402 | <varlistentry id="localedef">
|
---|
403 | <term><command>localedef</command></term>
|
---|
404 | <listitem>
|
---|
405 | <para>Compiles locale specifications</para>
|
---|
406 | <indexterm zone="ch-system-glibc localedef"><primary sortas="b-localedef">localedef</primary></indexterm>
|
---|
407 | </listitem>
|
---|
408 | </varlistentry>
|
---|
409 |
|
---|
410 | <varlistentry id="mtrace">
|
---|
411 | <term><command>mtrace</command></term>
|
---|
412 | <listitem>
|
---|
413 | <para>Reads and interprets a memory trace file and displays a summary in human-readable format</para>
|
---|
414 | <indexterm zone="ch-system-glibc mtrace"><primary sortas="b-mtrace">mtrace</primary></indexterm>
|
---|
415 | </listitem>
|
---|
416 | </varlistentry>
|
---|
417 |
|
---|
418 | <varlistentry id="nscd">
|
---|
419 | <term><command>nscd</command></term>
|
---|
420 | <listitem>
|
---|
421 | <para>A daemon that provides a cache for the most common name
|
---|
422 | service requests</para>
|
---|
423 | <indexterm zone="ch-system-glibc nscd"><primary sortas="b-nscd">nscd</primary></indexterm>
|
---|
424 | </listitem>
|
---|
425 | </varlistentry>
|
---|
426 |
|
---|
427 | <varlistentry id="nscd_nischeck">
|
---|
428 | <term><command>nscd_nischeck</command></term>
|
---|
429 | <listitem>
|
---|
430 | <para>Checks whether or not secure mode is necessary for NIS+ lookup</para>
|
---|
431 | <indexterm zone="ch-system-glibc nscd_nischeck"><primary sortas="b-nscd_nischeck">nscd_nischeck</primary></indexterm>
|
---|
432 | </listitem>
|
---|
433 | </varlistentry>
|
---|
434 |
|
---|
435 | <varlistentry id="pcprofiledump">
|
---|
436 | <term><command>pcprofiledump</command></term>
|
---|
437 | <listitem>
|
---|
438 | <para>Dumps information generated by PC profiling</para>
|
---|
439 | <indexterm zone="ch-system-glibc pcprofiledump"><primary sortas="b-pcprofiledump">pcprofiledump</primary></indexterm>
|
---|
440 | </listitem>
|
---|
441 | </varlistentry>
|
---|
442 |
|
---|
443 | <varlistentry id="pt_chown">
|
---|
444 | <term><command>pt_chown</command></term>
|
---|
445 | <listitem>
|
---|
446 | <para>A helper program for <command>grantpt</command> to set
|
---|
447 | the owner, group and access permissions of a slave pseudo terminal</para>
|
---|
448 | <indexterm zone="ch-system-glibc pt_chown"><primary sortas="b-pt_chown">pt_chown</primary></indexterm>
|
---|
449 | </listitem>
|
---|
450 | </varlistentry>
|
---|
451 |
|
---|
452 | <varlistentry id="rpcgen">
|
---|
453 | <term><command>rpcgen</command></term>
|
---|
454 | <listitem>
|
---|
455 | <para>Generates C code to implement the Remote Procecure Call (RPC) protocol</para>
|
---|
456 | <indexterm zone="ch-system-glibc rpcgen"><primary sortas="b-rpcgen">rpcgen</primary></indexterm>
|
---|
457 | </listitem>
|
---|
458 | </varlistentry>
|
---|
459 |
|
---|
460 | <varlistentry id="rpcinfo">
|
---|
461 | <term><command>rpcinfo</command></term>
|
---|
462 | <listitem>
|
---|
463 | <para>Makes an RPC call to an RPC server</para>
|
---|
464 | <indexterm zone="ch-system-glibc rpcinfo"><primary sortas="b-rpcinfo">rpcinfo</primary></indexterm>
|
---|
465 | </listitem>
|
---|
466 | </varlistentry>
|
---|
467 |
|
---|
468 | <varlistentry id="sln">
|
---|
469 | <term><command>sln</command></term>
|
---|
470 | <listitem>
|
---|
471 | <para>A statically linked <command>ln</command> program</para>
|
---|
472 | <indexterm zone="ch-system-glibc sln"><primary sortas="b-sln">sln</primary></indexterm>
|
---|
473 | </listitem>
|
---|
474 | </varlistentry>
|
---|
475 |
|
---|
476 | <varlistentry id="sprof">
|
---|
477 | <term><command>sprof</command></term>
|
---|
478 | <listitem>
|
---|
479 | <para>Reads and displays shared object profiling data</para>
|
---|
480 | <indexterm zone="ch-system-glibc sprof"><primary sortas="b-sprof">sprof</primary></indexterm>
|
---|
481 | </listitem>
|
---|
482 | </varlistentry>
|
---|
483 |
|
---|
484 | <varlistentry id="tzselect">
|
---|
485 | <term><command>tzselect</command></term>
|
---|
486 | <listitem>
|
---|
487 | <para>Asks the user about the location of the
|
---|
488 | system and reports the corresponding time zone description</para>
|
---|
489 | <indexterm zone="ch-system-glibc tzselect"><primary sortas="b-tzselect">tzselect</primary></indexterm>
|
---|
490 | </listitem>
|
---|
491 | </varlistentry>
|
---|
492 |
|
---|
493 | <varlistentry id="xtrace">
|
---|
494 | <term><command>xtrace</command></term>
|
---|
495 | <listitem>
|
---|
496 | <para>Traces the execution of a program by
|
---|
497 | printing the currently executed function</para>
|
---|
498 | <indexterm zone="ch-system-glibc xtrace"><primary sortas="b-xtrace">xtrace</primary></indexterm>
|
---|
499 | </listitem>
|
---|
500 | </varlistentry>
|
---|
501 |
|
---|
502 | <varlistentry id="zdump">
|
---|
503 | <term><command>zdump</command></term>
|
---|
504 | <listitem>
|
---|
505 | <para>The time zone dumper</para>
|
---|
506 | <indexterm zone="ch-system-glibc zdump"><primary sortas="b-zdump">zdump</primary></indexterm>
|
---|
507 | </listitem>
|
---|
508 | </varlistentry>
|
---|
509 |
|
---|
510 | <varlistentry id="zic">
|
---|
511 | <term><command>zic</command></term>
|
---|
512 | <listitem>
|
---|
513 | <para>The time zone compiler</para>
|
---|
514 | <indexterm zone="ch-system-glibc zic"><primary sortas="b-zic">zic</primary></indexterm>
|
---|
515 | </listitem>
|
---|
516 | </varlistentry>
|
---|
517 |
|
---|
518 | <varlistentry id="ld.so">
|
---|
519 | <term><filename class="libraryfile">ld.so</filename></term>
|
---|
520 | <listitem>
|
---|
521 | <para>The helper program for shared library executables</para>
|
---|
522 | <indexterm zone="ch-system-glibc ld.so"><primary sortas="c-ld.so">ld.so</primary></indexterm>
|
---|
523 | </listitem>
|
---|
524 | </varlistentry>
|
---|
525 |
|
---|
526 | <varlistentry id="libBrokenLocale">
|
---|
527 | <term><filename class="libraryfile">libBrokenLocale</filename></term>
|
---|
528 | <listitem>
|
---|
529 | <para>Used by programs, such as Mozilla, to solve broken locales</para>
|
---|
530 | <indexterm zone="ch-system-glibc libBrokenLocale"><primary sortas="c-libBrokenLocale">libBrokenLocale</primary></indexterm>
|
---|
531 | </listitem>
|
---|
532 | </varlistentry>
|
---|
533 |
|
---|
534 | <varlistentry id="libSegFault">
|
---|
535 | <term><filename class="libraryfile">libSegFault</filename></term>
|
---|
536 | <listitem>
|
---|
537 | <para>The segmentation fault signal handler</para>
|
---|
538 | <indexterm zone="ch-system-glibc libSegFault"><primary sortas="c-libSegFault">libSegFault</primary></indexterm>
|
---|
539 | </listitem>
|
---|
540 | </varlistentry>
|
---|
541 |
|
---|
542 | <varlistentry id="libanl">
|
---|
543 | <term><filename class="libraryfile">libanl</filename></term>
|
---|
544 | <listitem>
|
---|
545 | <para>An asynchronous name lookup library</para>
|
---|
546 | <indexterm zone="ch-system-glibc libanl"><primary sortas="c-libanl">libanl</primary></indexterm>
|
---|
547 | </listitem>
|
---|
548 | </varlistentry>
|
---|
549 |
|
---|
550 | <varlistentry id="libbsd-compat">
|
---|
551 | <term><filename class="libraryfile">libbsd-compat</filename></term>
|
---|
552 | <listitem>
|
---|
553 | <para>Provides the portability needed
|
---|
554 | in order to run certain Berkey Software Distribution (BSD) programs under Linux</para>
|
---|
555 | <indexterm zone="ch-system-glibc libbsd-compat"><primary sortas="c-libbsd-compat">libbsd-compat</primary></indexterm>
|
---|
556 | </listitem>
|
---|
557 | </varlistentry>
|
---|
558 |
|
---|
559 | <varlistentry id="libc">
|
---|
560 | <term><filename class="libraryfile">libc</filename></term>
|
---|
561 | <listitem>
|
---|
562 | <para>The main C library</para>
|
---|
563 | <indexterm zone="ch-system-glibc libc"><primary sortas="c-libc">libc</primary></indexterm>
|
---|
564 | </listitem>
|
---|
565 | </varlistentry>
|
---|
566 |
|
---|
567 | <varlistentry id="libcrypt">
|
---|
568 | <term><filename class="libraryfile">libcrypt</filename></term>
|
---|
569 | <listitem>
|
---|
570 | <para>The cryptography library</para>
|
---|
571 | <indexterm zone="ch-system-glibc libcrypt"><primary sortas="c-libcrypt">libcrypt</primary></indexterm>
|
---|
572 | </listitem>
|
---|
573 | </varlistentry>
|
---|
574 |
|
---|
575 | <varlistentry id="libdl">
|
---|
576 | <term><filename class="libraryfile">libdl</filename></term>
|
---|
577 | <listitem>
|
---|
578 | <para>The dynamic linking interface library</para>
|
---|
579 | <indexterm zone="ch-system-glibc libdl"><primary sortas="c-libdl">libdl</primary></indexterm>
|
---|
580 | </listitem>
|
---|
581 | </varlistentry>
|
---|
582 |
|
---|
583 | <varlistentry id="libg">
|
---|
584 | <term><filename class="libraryfile">libg</filename></term>
|
---|
585 | <listitem>
|
---|
586 | <para>A runtime library for <command>g++</command></para>
|
---|
587 | <indexterm zone="ch-system-glibc libg"><primary sortas="c-libg">libg</primary></indexterm>
|
---|
588 | </listitem>
|
---|
589 | </varlistentry>
|
---|
590 |
|
---|
591 | <varlistentry id="libieee">
|
---|
592 | <term><filename class="libraryfile">libieee</filename></term>
|
---|
593 | <listitem>
|
---|
594 | <para>The Institute of Electrical and Electronic Engineers (IEEE) floating point library</para>
|
---|
595 | <indexterm zone="ch-system-glibc libieee"><primary sortas="c-libieee">libieee</primary></indexterm>
|
---|
596 | </listitem>
|
---|
597 | </varlistentry>
|
---|
598 |
|
---|
599 | <varlistentry id="libm">
|
---|
600 | <term><filename class="libraryfile">libm</filename></term>
|
---|
601 | <listitem>
|
---|
602 | <para>The mathematical library</para>
|
---|
603 | <indexterm zone="ch-system-glibc libm"><primary sortas="c-libm">libm</primary></indexterm>
|
---|
604 | </listitem>
|
---|
605 | </varlistentry>
|
---|
606 |
|
---|
607 | <varlistentry id="libmcheck">
|
---|
608 | <term><filename class="libraryfile">libmcheck</filename></term>
|
---|
609 | <listitem>
|
---|
610 | <para>Contains code run at boot</para>
|
---|
611 | <indexterm zone="ch-system-glibc libmcheck"><primary sortas="c-libmcheck">libmcheck</primary></indexterm>
|
---|
612 | </listitem>
|
---|
613 | </varlistentry>
|
---|
614 |
|
---|
615 | <varlistentry id="libmemusage">
|
---|
616 | <term><filename class="libraryfile">libmemusage</filename></term>
|
---|
617 | <listitem>
|
---|
618 | <para>Used by <command>memusage</command> to help collect
|
---|
619 | information about the memory usage of a program</para>
|
---|
620 | <indexterm zone="ch-system-glibc libmemusage"><primary sortas="c-libmemusage">libmemusage</primary></indexterm>
|
---|
621 | </listitem>
|
---|
622 | </varlistentry>
|
---|
623 |
|
---|
624 | <varlistentry id="libnsl">
|
---|
625 | <term><filename class="libraryfile">libnsl</filename></term>
|
---|
626 | <listitem>
|
---|
627 | <para>The network services library</para>
|
---|
628 | <indexterm zone="ch-system-glibc libnsl"><primary sortas="c-libnsl">libnsl</primary></indexterm>
|
---|
629 | </listitem>
|
---|
630 | </varlistentry>
|
---|
631 |
|
---|
632 | <varlistentry id="libnss">
|
---|
633 | <term><filename class="libraryfile">libnss</filename></term>
|
---|
634 | <listitem>
|
---|
635 | <para>The Name Service Switch libraries,
|
---|
636 | containing functions for resolving host names, user names, group names,
|
---|
637 | aliases, services, protocols, etc.</para>
|
---|
638 | <indexterm zone="ch-system-glibc libnss"><primary sortas="c-libnss">libnss</primary></indexterm>
|
---|
639 | </listitem>
|
---|
640 | </varlistentry>
|
---|
641 |
|
---|
642 | <varlistentry id="libpcprofile">
|
---|
643 | <term><filename class="libraryfile">libpcprofile</filename></term>
|
---|
644 | <listitem>
|
---|
645 | <para>Contains profiling functions used
|
---|
646 | to track the amount of CPU time spent in specific source code lines</para>
|
---|
647 | <indexterm zone="ch-system-glibc libpcprofile"><primary sortas="c-libpcprofile">libpcprofile</primary></indexterm>
|
---|
648 | </listitem>
|
---|
649 | </varlistentry>
|
---|
650 |
|
---|
651 | <varlistentry id="libpthread">
|
---|
652 | <term><filename class="libraryfile">libpthread</filename></term>
|
---|
653 | <listitem>
|
---|
654 | <para>The POSIX threads library</para>
|
---|
655 | <indexterm zone="ch-system-glibc libpthread"><primary sortas="c-libpthread">libpthread</primary></indexterm>
|
---|
656 | </listitem>
|
---|
657 | </varlistentry>
|
---|
658 |
|
---|
659 | <varlistentry id="libresolv">
|
---|
660 | <term><filename class="libraryfile">libresolv</filename></term>
|
---|
661 | <listitem>
|
---|
662 | <para>Contains functions for creating,
|
---|
663 | sending, and interpreting packets to the Internet domain name servers</para>
|
---|
664 | <indexterm zone="ch-system-glibc libresolv"><primary sortas="c-libresolv">libresolv</primary></indexterm>
|
---|
665 | </listitem>
|
---|
666 | </varlistentry>
|
---|
667 |
|
---|
668 | <varlistentry id="librpcsvc">
|
---|
669 | <term><filename class="libraryfile">librpcsvc</filename></term>
|
---|
670 | <listitem>
|
---|
671 | <para>Contains functions providing miscellaneous RPC services</para>
|
---|
672 | <indexterm zone="ch-system-glibc librpcsvc"><primary sortas="c-librpcsvc">librpcsvc</primary></indexterm>
|
---|
673 | </listitem>
|
---|
674 | </varlistentry>
|
---|
675 |
|
---|
676 | <varlistentry id="librt">
|
---|
677 | <term><filename class="libraryfile">librt</filename></term>
|
---|
678 | <listitem>
|
---|
679 | <para>Contains functions providing most of the
|
---|
680 | interfaces specified by the POSIX.1b Realtime Extension</para>
|
---|
681 | <indexterm zone="ch-system-glibc librt"><primary sortas="c-librt">librt</primary></indexterm>
|
---|
682 | </listitem>
|
---|
683 | </varlistentry>
|
---|
684 |
|
---|
685 | <varlistentry id="libthread_db">
|
---|
686 | <term><filename class="libraryfile">libthread_db</filename></term>
|
---|
687 | <listitem>
|
---|
688 | <para>Contains functions useful for
|
---|
689 | building debuggers for multi-threaded programs</para>
|
---|
690 | <indexterm zone="ch-system-glibc libthread_db"><primary sortas="c-libthread_db">libthread_db</primary></indexterm>
|
---|
691 | </listitem>
|
---|
692 | </varlistentry>
|
---|
693 |
|
---|
694 | <varlistentry id="libutil">
|
---|
695 | <term><filename class="libraryfile">libutil</filename></term>
|
---|
696 | <listitem>
|
---|
697 | <para>Contains code for <quote>standard</quote> functions used in many different Unix utilities</para>
|
---|
698 | <indexterm zone="ch-system-glibc libutil"><primary sortas="c-libutil">libutil</primary></indexterm>
|
---|
699 | </listitem>
|
---|
700 | </varlistentry>
|
---|
701 | </variablelist>
|
---|
702 |
|
---|
703 | </sect2>
|
---|
704 |
|
---|
705 | </sect1>
|
---|
706 |
|
---|