1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
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3 | "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
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4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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5 | %general-entities;
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6 | ]>
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7 |
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8 | <sect1 id="ch-system-glibc" role="wrap">
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9 | <?dbhtml filename="glibc.html"?>
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10 |
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11 | <title>Glibc-&glibc-version;</title>
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12 |
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13 | <indexterm zone="ch-system-glibc">
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14 | <primary sortas="a-Glibc">Glibc</primary>
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15 | </indexterm>
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16 |
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17 | <sect2 role="package">
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18 | <title/>
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19 |
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20 | <para>The Glibc package contains the main C library. This library provides
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21 | the basic routines for allocating memory, searching directories, opening and
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22 | closing files, reading and writing files, string handling, pattern matching,
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23 | arithmetic, and so on.</para>
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24 |
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25 | <segmentedlist>
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26 | <segtitle>&dependencies;</segtitle>
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27 |
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28 | <seglistitem>
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29 | <seg>Bash, Binutils, Coreutils, Diffutils, Gawk, GCC, Gettext,
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30 | Grep, Make, Patch, Perl, Sed, and Texinfo</seg>
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31 | </seglistitem>
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32 | </segmentedlist>
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33 |
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34 | </sect2>
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35 |
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36 | <sect2 role="installation">
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37 | <title>Installation of Glibc</title>
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38 |
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39 | <note os="z">
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40 | <para>Some packages outside of LFS suggest installing GNU libiconv in
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41 | order to translate data from one encoding to another. The project's
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42 | home page (<ulink url="http://www.gnu.org/software/libiconv/"/>) says
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43 | <quote>This library provides an <function>iconv()</function>
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44 | implementation, for use on systems which don't have one, or whose
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45 | implementation cannot convert from/to Unicode.</quote> Glibc provides
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46 | an <function>iconv()</function> implementation and can convert from/to
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47 | Unicode, therefore libiconv is not required on an LFS system.</para>
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48 | </note>
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49 |
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50 | <para os="b">The Glibc build system is self-contained and will install
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51 | perfectly, even though the compiler specs file and linker are still
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52 | pointing at <filename class="directory">/tools</filename>. The specs
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53 | and linker cannot be adjusted before the Glibc install because the
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54 | Glibc autoconf tests would give false results and defeat the goal
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55 | of achieving a clean build.</para>
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56 |
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57 | <para os="c">The following patch removes the potential of localdef
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58 | segfaulting:</para>
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59 |
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60 | <screen os="d"><userinput>patch -Np1 -i ../&glibc-localedef_segfault-patch;</userinput></screen>
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61 |
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62 | <para os="e">The Glibc documentation recommends building Glibc outside of the
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63 | source directory in a dedicated build directory:</para>
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64 |
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65 | <screen os="f"><userinput>mkdir ../glibc-build
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66 | cd ../glibc-build</userinput></screen>
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67 |
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68 | <para os="g">Prepare Glibc for compilation:</para>
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69 |
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70 | <screen os="h"><userinput>../glibc-&glibc-version;/configure --prefix=/usr \
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71 | --disable-profile --enable-add-ons --enable-kernel=2.6.0 \
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72 | --libexecdir=/usr/lib/glibc</userinput></screen>
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73 |
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74 | <variablelist os="i">
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75 | <title>The meaning of the new configure option:</title>
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76 |
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77 | <varlistentry>
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78 | <term><parameter>--libexecdir=/usr/lib/glibc</parameter></term>
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79 | <listitem>
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80 | <para>This changes the location of the <command>pt_chown</command>
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81 | program from its default of <filename
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82 | class="directory">/usr/libexec</filename> to <filename
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83 | class="directory">/usr/lib/glibc</filename>.</para>
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84 | </listitem>
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85 | </varlistentry>
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86 | </variablelist>
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87 |
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88 | <para os="j">Compile the package:</para>
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89 |
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90 | <screen os="k"><userinput>make</userinput></screen>
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91 |
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92 | <important os="l">
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93 | <para>In this section, the test suite for Glibc is considered critical.
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94 | Do not skip it under any circumstance.</para>
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95 | </important>
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96 |
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97 | <para os="m">Test the results:</para>
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98 |
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99 | <!-- items n,o,p no longer the master, use x86_64 which has no failures -->
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100 |
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101 | <screen os="n"><userinput>make -k check >glibc-check-log 2>&1 ; grep Error glibc-check-log</userinput></screen>
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102 |
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103 | <para os="o">The Glibc test suite is highly dependent on certain functions of
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104 | the host system, in particular the kernel. In general, the Glibc test
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105 | suite is always expected to pass. However, in certain circumstances,
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106 | some failures are unavoidable. This is a list of the most common
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107 | issues:</para>
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108 |
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109 | <itemizedlist os="p">
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110 | <listitem>
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111 | <para>The <emphasis>math</emphasis> tests, at least on i686, fail in
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112 | the <emphasis>test-double</emphasis> and <emphasis>test-idouble</emphasis>
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113 | tests with gcc-&gcc-version;, the <command>grep</command> command will
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114 | also report an expected (ignored) failure in <emphasis>posix/annexc
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115 | </emphasis>. These two failures in the math tests appear to be harmless.
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116 | The math tests may also fail on systems where the CPU is not a relatively
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117 | new genuine Intel or authentic AMD. Certain optimization settings are
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118 | also known to be a factor here.</para>
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119 | </listitem>
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120 | <listitem>
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121 | <para>The <emphasis>gettext</emphasis> test sometimes fails due to
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122 | host system issues. The exact reasons are not yet clear.</para>
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123 | </listitem>
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124 | <listitem>
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125 | <para>If you have mounted the LFS partition with the
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126 | <parameter>noatime</parameter> option, the <emphasis>atime</emphasis> test
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127 | will fail. As mentioned in <xref linkend="ch-partitioning-mounting"/>,
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128 | do not use the <parameter>noatime</parameter> option while building
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129 | LFS.</para>
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130 | </listitem>
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131 | <listitem>
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132 | <para>When running on older and slower hardware, some tests
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133 | can fail because of test timeouts being exceeded.</para>
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134 | </listitem>
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135 | </itemizedlist>
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136 |
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137 | <para os="q">Though it is a harmless message, the install stage of Glibc will
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138 | complain about the absence of <filename>/etc/ld.so.conf</filename>.
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139 | Prevent this warning with:</para>
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140 |
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141 | <screen os="r"><userinput>touch /etc/ld.so.conf</userinput></screen>
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142 |
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143 | <para os="s">Install the package:</para>
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144 |
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145 | <screen os="t"><userinput>make install</userinput></screen>
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146 |
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147 | </sect2>
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148 |
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149 | <sect2 id="i18n-glibc" role="configuration">
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150 | <title>Internationalization</title>
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151 |
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152 | <para>The locales that can make the system respond in a different
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153 | language were not installed by the above command. Install this
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154 | with:</para>
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155 |
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156 | <screen><userinput>make localedata/install-locales</userinput></screen>
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157 |
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158 | <para>To save time, an alternative to running the previous command (which
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159 | generates and installs every locale listed in the
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160 | glibc-&glibc-version;/localedata/SUPPORTED file) is to install only
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161 | those locales that are wanted and needed. This can be achieved by using
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162 | the <command>localedef</command> command. Information on this command is
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163 | located in the <filename>INSTALL</filename> file in the Glibc source.
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164 | However, there are a number of locales that are essential in order for the
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165 | tests of future packages to pass, in particular, the
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166 | <emphasis>libstdc++</emphasis> tests from GCC. The following instructions,
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167 | instead of the <parameter>install-locales</parameter> target used above,
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168 | will install the minimum set of locales necessary for the tests to run
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169 | successfully:</para>
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170 |
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171 | <screen><userinput>mkdir -p /usr/lib/locale
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172 | localedef -i de_DE -f ISO-8859-1 de_DE
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173 | localedef -i de_DE@euro -f ISO-8859-15 de_DE@euro
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174 | localedef -i en_HK -f ISO-8859-1 en_HK
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175 | localedef -i en_PH -f ISO-8859-1 en_PH
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176 | localedef -i en_US -f ISO-8859-1 en_US
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177 | localedef -i es_MX -f ISO-8859-1 es_MX
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178 | localedef -i fa_IR -f UTF-8 fa_IR
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179 | localedef -i fr_FR -f ISO-8859-1 fr_FR
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180 | localedef -i fr_FR@euro -f ISO-8859-15 fr_FR@euro
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181 | localedef -i it_IT -f ISO-8859-1 it_IT
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182 | localedef -i ja_JP -f EUC-JP ja_JP</userinput></screen>
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183 |
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184 | <para>Some locales installed by the <command>make
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185 | localedata/install-locales</command> command above are not properly
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186 | supported by some applications that are in the LFS and BLFS books. Because
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187 | of the various problems that arise due to application programmers making
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188 | assumptions that break in such locales, LFS should not be used in locales
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189 | that utilize multibyte character sets (including UTF-8) or right-to-left
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190 | writing order. Numerous unofficial and unstable patches are required to
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191 | fix these problems, and it has been decided by the LFS developers not to
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192 | support such complex locales at this time. This applies to the ja_JP and
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193 | fa_IR locales as well—they have been installed only for GCC and
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194 | Gettext tests to pass, and the <command>watch</command> program (part of
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195 | the Procps package) does not work properly in them. Various attempts to
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196 | circumvent these restrictions are documented in internationalization-related
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197 | hints.</para>
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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">
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202 | <title>Configuring Glibc</title>
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203 |
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204 | <indexterm zone="conf-glibc">
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205 | <primary sortas="e-/etc/nsswitch.conf">/etc/nsswitch.conf</primary>
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206 | </indexterm>
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207 |
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208 | <indexterm zone="conf-glibc">
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209 | <primary sortas="e-/etc/localtime">/etc/localtime</primary>
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210 | </indexterm>
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211 |
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212 | <para>The <filename>/etc/nsswitch.conf</filename> file needs to be created
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213 | because, although Glibc provides defaults when this file is missing or
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214 | corrupt, the Glibc defaults do not work well in a networked environment.
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215 | The time zone also needs to be configured.</para>
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216 |
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217 | <para>Create a new file <filename>/etc/nsswitch.conf</filename> by running
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218 | the following:</para>
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219 |
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220 | <screen><userinput>cat > /etc/nsswitch.conf << "EOF"
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221 | <literal># Begin /etc/nsswitch.conf
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222 |
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223 | passwd: files
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224 | group: files
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225 | shadow: files
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226 |
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227 | hosts: files dns
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228 | networks: files
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229 |
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230 | protocols: files
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231 | services: files
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232 | ethers: files
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233 | rpc: files
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234 |
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235 | # End /etc/nsswitch.conf</literal>
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236 | EOF</userinput></screen>
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237 |
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238 | <para>To determine the local time zone, run the following script:</para>
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239 |
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240 | <screen><userinput>tzselect</userinput></screen>
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241 |
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242 | <para>After answering a few questions about the location, the script will
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243 | output the name of the time zone (e.g., <emphasis>EST5EDT</emphasis> or
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244 | <emphasis>Canada/Eastern</emphasis>). Then create the
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245 | <filename>/etc/localtime</filename> file by running:</para>
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246 |
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247 | <screen><userinput>cp --remove-destination /usr/share/zoneinfo/<replaceable>[xxx]</replaceable> \
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248 | /etc/localtime</userinput></screen>
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249 |
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250 | <para>Replace <replaceable>[xxx]</replaceable> with the name of the time zone
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251 | that <command>tzselect</command> provided (e.g., Canada/Eastern).</para>
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252 |
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253 | <variablelist>
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254 | <title>The meaning of the cp option:</title>
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255 |
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256 | <varlistentry>
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257 | <term><parameter>--remove-destination</parameter></term>
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258 | <listitem>
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259 | <para>This is needed to force removal of the already existing symbolic
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260 | link. The reason for copying the file instead of using a symlink is to
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261 | cover the situation where <filename class="directory">/usr</filename>
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262 | is on a separate partition. This could be important when booted into
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263 | single user mode.</para>
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264 | </listitem>
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265 | </varlistentry>
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266 | </variablelist>
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267 |
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268 | </sect2>
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269 |
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270 | <sect2 id="conf-ld" role="configuration">
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271 | <title>Configuring The Dynamic Loader</title>
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272 |
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273 | <indexterm zone="conf-ld">
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274 | <primary sortas="e-/etc/ld.so.conf">/etc/ld.so.conf</primary>
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275 | </indexterm>
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276 |
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277 | <para>By default, the dynamic loader (<filename
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278 | class="libraryfile">/lib/ld-linux.so.2</filename>) searches through
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279 | <filename class="directory">/lib</filename> and <filename
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280 | class="directory">/usr/lib</filename> for dynamic libraries that are
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281 | needed by programs as they are run. However, if there are libraries in
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282 | directories other than <filename class="directory">/lib</filename> and
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283 | <filename class="directory">/usr/lib</filename>, these need to be
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284 | added to the <filename>/etc/ld.so.conf</filename> file in order
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285 | for the dynamic loader to find them. Two directories that are commonly
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286 | known to contain additional libraries are <filename
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287 | class="directory">/usr/local/lib</filename> and <filename
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288 | class="directory">/opt/lib</filename>, so add those directories to the
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289 | dynamic loader's search path.</para>
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290 |
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291 | <para>Create a new file <filename>/etc/ld.so.conf</filename> by running the
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292 | following:</para>
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293 |
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294 | <screen><userinput>cat > /etc/ld.so.conf << "EOF"
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295 | <literal># Begin /etc/ld.so.conf
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296 |
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297 | /usr/local/lib
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298 | /opt/lib
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299 |
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300 | # End /etc/ld.so.conf</literal>
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301 | EOF</userinput></screen>
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302 |
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303 | </sect2>
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304 |
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305 | <sect2 id="contents-glibc" role="content">
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306 | <title>Contents of Glibc</title>
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307 |
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308 | <segmentedlist>
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309 | <segtitle>Installed programs</segtitle>
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310 | <segtitle>Installed libraries</segtitle>
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311 |
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312 | <seglistitem>
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313 | <seg>catchsegv, gencat, getconf, getent, iconv, iconvconfig, ldconfig,
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314 | ldd, lddlibc4, locale, localedef, mtrace, nscd, nscd_nischeck,
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315 | pcprofiledump, pt_chown, rpcgen, rpcinfo, sln, sprof, tzselect, xtrace,
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316 | zdump, and zic</seg>
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317 | <seg>ld.so, libBrokenLocale.[a,so], libSegFault.so, libanl.[a,so],
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318 | libbsd-compat.a, libc.[a,so], libcrypt.[a,so], libdl.[a,so], libg.a,
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319 | libieee.a, libm.[a,so], libmcheck.a, libmemusage.so, libnsl.a,
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320 | libnss_compat.so, libnss_dns.so, libnss_files.so, libnss_hesiod.so,
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321 | libnss_nis.so, libnss_nisplus.so, libpcprofile.so, libpthread.[a,so],
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322 | libresolv.[a,so], librpcsvc.a, librt.[a,so], libthread_db.so, and
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323 | libutil.[a,so]</seg>
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324 | </seglistitem>
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325 | </segmentedlist>
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326 |
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327 | <variablelist>
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328 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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329 | <?dbfo list-presentation="list"?>
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330 | <?dbhtml list-presentation="table"?>
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331 |
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332 | <varlistentry id="catchsegv">
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333 | <term><command>catchsegv</command></term>
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334 | <listitem>
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335 | <para>Can be used to create a stack trace when a program
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336 | terminates with a segmentation fault</para>
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337 | <indexterm zone="ch-system-glibc catchsegv">
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338 | <primary sortas="b-catchsegv">catchsegv</primary>
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339 | </indexterm>
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340 | </listitem>
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341 | </varlistentry>
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342 |
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343 | <varlistentry id="gencat">
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344 | <term><command>gencat</command></term>
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345 | <listitem>
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346 | <para>Generates message catalogues</para>
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347 | <indexterm zone="ch-system-glibc gencat">
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348 | <primary sortas="b-gencat">gencat</primary>
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349 | </indexterm>
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350 | </listitem>
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351 | </varlistentry>
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352 |
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353 | <varlistentry id="getconf">
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354 | <term><command>getconf</command></term>
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355 | <listitem>
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356 | <para>Displays the system configuration values for file system specific
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357 | variables</para>
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358 | <indexterm zone="ch-system-glibc getconf">
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359 | <primary sortas="b-getconf">getconf</primary>
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360 | </indexterm>
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361 | </listitem>
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362 | </varlistentry>
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363 |
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364 | <varlistentry id="getent">
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365 | <term><command>getent</command></term>
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366 | <listitem>
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367 | <para>Gets entries from an administrative database</para>
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368 | <indexterm zone="ch-system-glibc getent">
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369 | <primary sortas="b-getent">getent</primary>
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370 | </indexterm>
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371 | </listitem>
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372 | </varlistentry>
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373 |
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374 | <varlistentry id="iconv">
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375 | <term><command>iconv</command></term>
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376 | <listitem>
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377 | <para>Performs character set conversion</para>
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378 | <indexterm zone="ch-system-glibc iconv">
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379 | <primary sortas="b-iconv">iconv</primary>
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380 | </indexterm>
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381 | </listitem>
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382 | </varlistentry>
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383 |
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384 | <varlistentry id="iconvconfig">
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385 | <term><command>iconvconfig</command></term>
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386 | <listitem>
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387 | <para>Creates fastloading <command>iconv</command> module configuration
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388 | files</para>
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389 | <indexterm zone="ch-system-glibc iconvconfig">
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390 | <primary sortas="b-iconvconfig">iconvconfig</primary>
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391 | </indexterm>
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392 | </listitem>
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393 | </varlistentry>
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394 |
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395 | <varlistentry id="ldconfig">
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396 | <term><command>ldconfig</command></term>
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397 | <listitem>
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398 | <para>Configures the dynamic linker runtime bindings</para>
|
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399 | <indexterm zone="ch-system-glibc ldconfig">
|
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400 | <primary sortas="b-ldconfig">ldconfig</primary>
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401 | </indexterm>
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402 | </listitem>
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403 | </varlistentry>
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404 |
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405 | <varlistentry id="ldd">
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406 | <term><command>ldd</command></term>
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407 | <listitem>
|
---|
408 | <para>Reports which shared libraries are required
|
---|
409 | by each given program or shared library</para>
|
---|
410 | <indexterm zone="ch-system-glibc ldd">
|
---|
411 | <primary sortas="b-ldd">ldd</primary>
|
---|
412 | </indexterm>
|
---|
413 | </listitem>
|
---|
414 | </varlistentry>
|
---|
415 |
|
---|
416 | <varlistentry id="lddlibc4">
|
---|
417 | <term><command>lddlibc4</command></term>
|
---|
418 | <listitem>
|
---|
419 | <para>Assists <command>ldd</command> with object files</para>
|
---|
420 | <indexterm zone="ch-system-glibc lddlibc4">
|
---|
421 | <primary sortas="b-lddlibc4">lddlibc4</primary>
|
---|
422 | </indexterm>
|
---|
423 | </listitem>
|
---|
424 | </varlistentry>
|
---|
425 |
|
---|
426 | <varlistentry id="locale">
|
---|
427 | <term><command>locale</command></term>
|
---|
428 | <listitem>
|
---|
429 | <para>Tells the compiler to enable or disable the use of POSIX locales
|
---|
430 | for built-in operations</para>
|
---|
431 | <indexterm zone="ch-system-glibc locale">
|
---|
432 | <primary sortas="b-locale">locale</primary>
|
---|
433 | </indexterm>
|
---|
434 | </listitem>
|
---|
435 | </varlistentry>
|
---|
436 |
|
---|
437 | <varlistentry id="localedef">
|
---|
438 | <term><command>localedef</command></term>
|
---|
439 | <listitem>
|
---|
440 | <para>Compiles locale specifications</para>
|
---|
441 | <indexterm zone="ch-system-glibc localedef">
|
---|
442 | <primary sortas="b-localedef">localedef</primary>
|
---|
443 | </indexterm>
|
---|
444 | </listitem>
|
---|
445 | </varlistentry>
|
---|
446 |
|
---|
447 | <varlistentry id="mtrace">
|
---|
448 | <term><command>mtrace</command></term>
|
---|
449 | <listitem>
|
---|
450 | <para>Reads and interprets a memory trace file and
|
---|
451 | displays a summary in human-readable format</para>
|
---|
452 | <indexterm zone="ch-system-glibc mtrace">
|
---|
453 | <primary sortas="b-mtrace">mtrace</primary>
|
---|
454 | </indexterm>
|
---|
455 | </listitem>
|
---|
456 | </varlistentry>
|
---|
457 |
|
---|
458 | <varlistentry id="nscd">
|
---|
459 | <term><command>nscd</command></term>
|
---|
460 | <listitem>
|
---|
461 | <para>A daemon that provides a cache for the most common name
|
---|
462 | service requests</para>
|
---|
463 | <indexterm zone="ch-system-glibc nscd">
|
---|
464 | <primary sortas="b-nscd">nscd</primary>
|
---|
465 | </indexterm>
|
---|
466 | </listitem>
|
---|
467 | </varlistentry>
|
---|
468 |
|
---|
469 | <varlistentry id="nscd_nischeck">
|
---|
470 | <term><command>nscd_nischeck</command></term>
|
---|
471 | <listitem>
|
---|
472 | <para>Checks whether or not secure mode is necessary for NIS+
|
---|
473 | lookup</para>
|
---|
474 | <indexterm zone="ch-system-glibc nscd_nischeck">
|
---|
475 | <primary sortas="b-nscd_nischeck">nscd_nischeck</primary>
|
---|
476 | </indexterm>
|
---|
477 | </listitem>
|
---|
478 | </varlistentry>
|
---|
479 |
|
---|
480 | <varlistentry id="pcprofiledump">
|
---|
481 | <term><command>pcprofiledump</command></term>
|
---|
482 | <listitem>
|
---|
483 | <para>Dumps information generated by PC profiling</para>
|
---|
484 | <indexterm zone="ch-system-glibc pcprofiledump">
|
---|
485 | <primary sortas="b-pcprofiledump">pcprofiledump</primary>
|
---|
486 | </indexterm>
|
---|
487 | </listitem>
|
---|
488 | </varlistentry>
|
---|
489 |
|
---|
490 | <varlistentry id="pt_chown">
|
---|
491 | <term><command>pt_chown</command></term>
|
---|
492 | <listitem>
|
---|
493 | <para>A helper program for <command>grantpt</command> to set the owner,
|
---|
494 | group and access permissions of a slave pseudo terminal</para>
|
---|
495 | <indexterm zone="ch-system-glibc pt_chown">
|
---|
496 | <primary sortas="b-pt_chown">pt_chown</primary>
|
---|
497 | </indexterm>
|
---|
498 | </listitem>
|
---|
499 | </varlistentry>
|
---|
500 |
|
---|
501 | <varlistentry id="rpcgen">
|
---|
502 | <term><command>rpcgen</command></term>
|
---|
503 | <listitem>
|
---|
504 | <para>Generates C code to implement the Remote Procecure Call (RPC)
|
---|
505 | protocol</para>
|
---|
506 | <indexterm zone="ch-system-glibc rpcgen">
|
---|
507 | <primary sortas="b-rpcgen">rpcgen</primary>
|
---|
508 | </indexterm>
|
---|
509 | </listitem>
|
---|
510 | </varlistentry>
|
---|
511 |
|
---|
512 | <varlistentry id="rpcinfo">
|
---|
513 | <term><command>rpcinfo</command></term>
|
---|
514 | <listitem>
|
---|
515 | <para>Makes an RPC call to an RPC server</para>
|
---|
516 | <indexterm zone="ch-system-glibc rpcinfo">
|
---|
517 | <primary sortas="b-rpcinfo">rpcinfo</primary>
|
---|
518 | </indexterm>
|
---|
519 | </listitem>
|
---|
520 | </varlistentry>
|
---|
521 |
|
---|
522 | <varlistentry id="sln">
|
---|
523 | <term><command>sln</command></term>
|
---|
524 | <listitem>
|
---|
525 | <para>A statically linked <command>ln</command> program</para>
|
---|
526 | <indexterm zone="ch-system-glibc sln">
|
---|
527 | <primary sortas="b-sln">sln</primary>
|
---|
528 | </indexterm>
|
---|
529 | </listitem>
|
---|
530 | </varlistentry>
|
---|
531 |
|
---|
532 | <varlistentry id="sprof">
|
---|
533 | <term><command>sprof</command></term>
|
---|
534 | <listitem>
|
---|
535 | <para>Reads and displays shared object profiling data</para>
|
---|
536 | <indexterm zone="ch-system-glibc sprof">
|
---|
537 | <primary sortas="b-sprof">sprof</primary>
|
---|
538 | </indexterm>
|
---|
539 | </listitem>
|
---|
540 | </varlistentry>
|
---|
541 |
|
---|
542 | <varlistentry id="tzselect">
|
---|
543 | <term><command>tzselect</command></term>
|
---|
544 | <listitem>
|
---|
545 | <para>Asks the user about the location of the
|
---|
546 | system and reports the corresponding time zone description</para>
|
---|
547 | <indexterm zone="ch-system-glibc tzselect">
|
---|
548 | <primary sortas="b-tzselect">tzselect</primary>
|
---|
549 | </indexterm>
|
---|
550 | </listitem>
|
---|
551 | </varlistentry>
|
---|
552 |
|
---|
553 | <varlistentry id="xtrace">
|
---|
554 | <term><command>xtrace</command></term>
|
---|
555 | <listitem>
|
---|
556 | <para>Traces the execution of a program by
|
---|
557 | printing the currently executed function</para>
|
---|
558 | <indexterm zone="ch-system-glibc xtrace">
|
---|
559 | <primary sortas="b-xtrace">xtrace</primary>
|
---|
560 | </indexterm>
|
---|
561 | </listitem>
|
---|
562 | </varlistentry>
|
---|
563 |
|
---|
564 | <varlistentry id="zdump">
|
---|
565 | <term><command>zdump</command></term>
|
---|
566 | <listitem>
|
---|
567 | <para>The time zone dumper</para>
|
---|
568 | <indexterm zone="ch-system-glibc zdump">
|
---|
569 | <primary sortas="b-zdump">zdump</primary>
|
---|
570 | </indexterm>
|
---|
571 | </listitem>
|
---|
572 | </varlistentry>
|
---|
573 |
|
---|
574 | <varlistentry id="zic">
|
---|
575 | <term><command>zic</command></term>
|
---|
576 | <listitem>
|
---|
577 | <para>The time zone compiler</para>
|
---|
578 | <indexterm zone="ch-system-glibc zic">
|
---|
579 | <primary sortas="b-zic">zic</primary>
|
---|
580 | </indexterm>
|
---|
581 | </listitem>
|
---|
582 | </varlistentry>
|
---|
583 |
|
---|
584 | <varlistentry id="ld.so">
|
---|
585 | <term><filename class="libraryfile">ld.so</filename></term>
|
---|
586 | <listitem>
|
---|
587 | <para>The helper program for shared library executables</para>
|
---|
588 | <indexterm zone="ch-system-glibc ld.so">
|
---|
589 | <primary sortas="c-ld.so">ld.so</primary>
|
---|
590 | </indexterm>
|
---|
591 | </listitem>
|
---|
592 | </varlistentry>
|
---|
593 |
|
---|
594 | <varlistentry id="libBrokenLocale">
|
---|
595 | <term><filename class="libraryfile">libBrokenLocale</filename></term>
|
---|
596 | <listitem>
|
---|
597 | <para>Used by programs, such as Mozilla, to solve broken locales</para>
|
---|
598 | <indexterm zone="ch-system-glibc libBrokenLocale">
|
---|
599 | <primary sortas="c-libBrokenLocale">libBrokenLocale</primary>
|
---|
600 | </indexterm>
|
---|
601 | </listitem>
|
---|
602 | </varlistentry>
|
---|
603 |
|
---|
604 | <varlistentry id="libSegFault">
|
---|
605 | <term><filename class="libraryfile">libSegFault</filename></term>
|
---|
606 | <listitem>
|
---|
607 | <para>The segmentation fault signal handler</para>
|
---|
608 | <indexterm zone="ch-system-glibc libSegFault">
|
---|
609 | <primary sortas="c-libSegFault">libSegFault</primary>
|
---|
610 | </indexterm>
|
---|
611 | </listitem>
|
---|
612 | </varlistentry>
|
---|
613 |
|
---|
614 | <varlistentry id="libanl">
|
---|
615 | <term><filename class="libraryfile">libanl</filename></term>
|
---|
616 | <listitem>
|
---|
617 | <para>An asynchronous name lookup library</para>
|
---|
618 | <indexterm zone="ch-system-glibc libanl">
|
---|
619 | <primary sortas="c-libanl">libanl</primary>
|
---|
620 | </indexterm>
|
---|
621 | </listitem>
|
---|
622 | </varlistentry>
|
---|
623 |
|
---|
624 | <varlistentry id="libbsd-compat">
|
---|
625 | <term><filename class="libraryfile">libbsd-compat</filename></term>
|
---|
626 | <listitem>
|
---|
627 | <para>Provides the portability needed
|
---|
628 | in order to run certain Berkey Software Distribution (BSD) programs
|
---|
629 | under Linux</para>
|
---|
630 | <indexterm zone="ch-system-glibc libbsd-compat">
|
---|
631 | <primary sortas="c-libbsd-compat">libbsd-compat</primary>
|
---|
632 | </indexterm>
|
---|
633 | </listitem>
|
---|
634 | </varlistentry>
|
---|
635 |
|
---|
636 | <varlistentry id="libc">
|
---|
637 | <term><filename class="libraryfile">libc</filename></term>
|
---|
638 | <listitem>
|
---|
639 | <para>The main C library</para>
|
---|
640 | <indexterm zone="ch-system-glibc libc">
|
---|
641 | <primary sortas="c-libc">libc</primary>
|
---|
642 | </indexterm>
|
---|
643 | </listitem>
|
---|
644 | </varlistentry>
|
---|
645 |
|
---|
646 | <varlistentry id="libcrypt">
|
---|
647 | <term><filename class="libraryfile">libcrypt</filename></term>
|
---|
648 | <listitem>
|
---|
649 | <para>The cryptography library</para>
|
---|
650 | <indexterm zone="ch-system-glibc libcrypt">
|
---|
651 | <primary sortas="c-libcrypt">libcrypt</primary>
|
---|
652 | </indexterm>
|
---|
653 | </listitem>
|
---|
654 | </varlistentry>
|
---|
655 |
|
---|
656 | <varlistentry id="libdl">
|
---|
657 | <term><filename class="libraryfile">libdl</filename></term>
|
---|
658 | <listitem>
|
---|
659 | <para>The dynamic linking interface library</para>
|
---|
660 | <indexterm zone="ch-system-glibc libdl">
|
---|
661 | <primary sortas="c-libdl">libdl</primary>
|
---|
662 | </indexterm>
|
---|
663 | </listitem>
|
---|
664 | </varlistentry>
|
---|
665 |
|
---|
666 | <varlistentry id="libg">
|
---|
667 | <term><filename class="libraryfile">libg</filename></term>
|
---|
668 | <listitem>
|
---|
669 | <para>A runtime library for <command>g++</command></para>
|
---|
670 | <indexterm zone="ch-system-glibc libg">
|
---|
671 | <primary sortas="c-libg">libg</primary>
|
---|
672 | </indexterm>
|
---|
673 | </listitem>
|
---|
674 | </varlistentry>
|
---|
675 |
|
---|
676 | <varlistentry id="libieee">
|
---|
677 | <term><filename class="libraryfile">libieee</filename></term>
|
---|
678 | <listitem>
|
---|
679 | <para>The Institute of Electrical and Electronic Engineers (IEEE)
|
---|
680 | floating point library</para>
|
---|
681 | <indexterm zone="ch-system-glibc libieee">
|
---|
682 | <primary sortas="c-libieee">libieee</primary>
|
---|
683 | </indexterm>
|
---|
684 | </listitem>
|
---|
685 | </varlistentry>
|
---|
686 |
|
---|
687 | <varlistentry id="libm">
|
---|
688 | <term><filename class="libraryfile">libm</filename></term>
|
---|
689 | <listitem>
|
---|
690 | <para>The mathematical library</para>
|
---|
691 | <indexterm zone="ch-system-glibc libm">
|
---|
692 | <primary sortas="c-libm">libm</primary>
|
---|
693 | </indexterm>
|
---|
694 | </listitem>
|
---|
695 | </varlistentry>
|
---|
696 |
|
---|
697 | <varlistentry id="libmcheck">
|
---|
698 | <term><filename class="libraryfile">libmcheck</filename></term>
|
---|
699 | <listitem>
|
---|
700 | <para>Contains code run at boot</para>
|
---|
701 | <indexterm zone="ch-system-glibc libmcheck">
|
---|
702 | <primary sortas="c-libmcheck">libmcheck</primary>
|
---|
703 | </indexterm>
|
---|
704 | </listitem>
|
---|
705 | </varlistentry>
|
---|
706 |
|
---|
707 | <varlistentry id="libmemusage">
|
---|
708 | <term><filename class="libraryfile">libmemusage</filename></term>
|
---|
709 | <listitem>
|
---|
710 | <para>Used by <command>memusage</command> to help collect
|
---|
711 | information about the memory usage of a program</para>
|
---|
712 | <indexterm zone="ch-system-glibc libmemusage">
|
---|
713 | <primary sortas="c-libmemusage">libmemusage</primary>
|
---|
714 | </indexterm>
|
---|
715 | </listitem>
|
---|
716 | </varlistentry>
|
---|
717 |
|
---|
718 | <varlistentry id="libnsl">
|
---|
719 | <term><filename class="libraryfile">libnsl</filename></term>
|
---|
720 | <listitem>
|
---|
721 | <para>The network services library</para>
|
---|
722 | <indexterm zone="ch-system-glibc libnsl">
|
---|
723 | <primary sortas="c-libnsl">libnsl</primary>
|
---|
724 | </indexterm>
|
---|
725 | </listitem>
|
---|
726 | </varlistentry>
|
---|
727 |
|
---|
728 | <varlistentry id="libnss">
|
---|
729 | <term><filename class="libraryfile">libnss</filename></term>
|
---|
730 | <listitem>
|
---|
731 | <para>The Name Service Switch libraries, containing functions for
|
---|
732 | resolving host names, user names, group names, aliases, services,
|
---|
733 | protocols, etc.</para>
|
---|
734 | <indexterm zone="ch-system-glibc libnss">
|
---|
735 | <primary sortas="c-libnss">libnss</primary>
|
---|
736 | </indexterm>
|
---|
737 | </listitem>
|
---|
738 | </varlistentry>
|
---|
739 |
|
---|
740 | <varlistentry id="libpcprofile">
|
---|
741 | <term><filename class="libraryfile">libpcprofile</filename></term>
|
---|
742 | <listitem>
|
---|
743 | <para>Contains profiling functions used to track the amount of CPU
|
---|
744 | time spent in specific source code lines</para>
|
---|
745 | <indexterm zone="ch-system-glibc libpcprofile">
|
---|
746 | <primary sortas="c-libpcprofile">libpcprofile</primary>
|
---|
747 | </indexterm>
|
---|
748 | </listitem>
|
---|
749 | </varlistentry>
|
---|
750 |
|
---|
751 | <varlistentry id="libpthread">
|
---|
752 | <term><filename class="libraryfile">libpthread</filename></term>
|
---|
753 | <listitem>
|
---|
754 | <para>The POSIX threads library</para>
|
---|
755 | <indexterm zone="ch-system-glibc libpthread">
|
---|
756 | <primary sortas="c-libpthread">libpthread</primary>
|
---|
757 | </indexterm>
|
---|
758 | </listitem>
|
---|
759 | </varlistentry>
|
---|
760 |
|
---|
761 | <varlistentry id="libresolv">
|
---|
762 | <term><filename class="libraryfile">libresolv</filename></term>
|
---|
763 | <listitem>
|
---|
764 | <para>Contains functions for creating, sending, and interpreting
|
---|
765 | packets to the Internet domain name servers</para>
|
---|
766 | <indexterm zone="ch-system-glibc libresolv">
|
---|
767 | <primary sortas="c-libresolv">libresolv</primary>
|
---|
768 | </indexterm>
|
---|
769 | </listitem>
|
---|
770 | </varlistentry>
|
---|
771 |
|
---|
772 | <varlistentry id="librpcsvc">
|
---|
773 | <term><filename class="libraryfile">librpcsvc</filename></term>
|
---|
774 | <listitem>
|
---|
775 | <para>Contains functions providing miscellaneous RPC services</para>
|
---|
776 | <indexterm zone="ch-system-glibc librpcsvc">
|
---|
777 | <primary sortas="c-librpcsvc">librpcsvc</primary>
|
---|
778 | </indexterm>
|
---|
779 | </listitem>
|
---|
780 | </varlistentry>
|
---|
781 |
|
---|
782 | <varlistentry id="librt">
|
---|
783 | <term><filename class="libraryfile">librt</filename></term>
|
---|
784 | <listitem>
|
---|
785 | <para>Contains functions providing most of the interfaces specified by
|
---|
786 | the POSIX.1b Realtime Extension</para>
|
---|
787 | <indexterm zone="ch-system-glibc librt">
|
---|
788 | <primary sortas="c-librt">librt</primary>
|
---|
789 | </indexterm>
|
---|
790 | </listitem>
|
---|
791 | </varlistentry>
|
---|
792 |
|
---|
793 | <varlistentry id="libthread_db">
|
---|
794 | <term><filename class="libraryfile">libthread_db</filename></term>
|
---|
795 | <listitem>
|
---|
796 | <para>Contains functions useful for
|
---|
797 | building debuggers for multi-threaded programs</para>
|
---|
798 | <indexterm zone="ch-system-glibc libthread_db">
|
---|
799 | <primary sortas="c-libthread_db">libthread_db</primary>
|
---|
800 | </indexterm>
|
---|
801 | </listitem>
|
---|
802 | </varlistentry>
|
---|
803 |
|
---|
804 | <varlistentry id="libutil">
|
---|
805 | <term><filename class="libraryfile">libutil</filename></term>
|
---|
806 | <listitem>
|
---|
807 | <para>Contains code for <quote>standard</quote> functions used in
|
---|
808 | many different Unix utilities</para>
|
---|
809 | <indexterm zone="ch-system-glibc libutil">
|
---|
810 | <primary sortas="c-libutil">libutil</primary>
|
---|
811 | </indexterm>
|
---|
812 | </listitem>
|
---|
813 | </varlistentry>
|
---|
814 |
|
---|
815 | </variablelist>
|
---|
816 |
|
---|
817 | </sect2>
|
---|
818 |
|
---|
819 | </sect1>
|
---|