[673b0d8] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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| 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN" "http://www.oasis-open.org/docbook/xml/4.3/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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[3be4d97] | 6 | <sect1 id="ch-system-glibc" xreflabel="Glibc">
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[673b0d8] | 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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[6370fa6] | 11 |
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[5888299] | 12 | <para>The Glibc package contains the main C library. This library provides all
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| 13 | the basic routines for allocating memory, searching directories, opening and
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| 14 | closing files, reading and writing them, string handling, pattern matching,
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| 15 | arithmetic, and so on.</para>
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| 16 |
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[673b0d8] | 17 | <screen>&buildtime; 12.3 SBU
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| 18 | &diskspace; 784 MB</screen>
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| 19 |
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| 20 | <para>Glibc installation depends on: Bash, Binutils, Coreutils, Diffutils,
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| 21 | Gawk, GCC, Gettext, Grep, Make, Perl, Sed, Texinfo.</para>
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[3554fa3a] | 22 |
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[73aedd1d] | 23 |
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| 24 |
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| 25 | <sect2>
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[5888299] | 26 | <title>Installation of Glibc</title>
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[73aedd1d] | 27 |
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| 28 | <para>The Glibc build system is very well self-contained and will install
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| 29 | perfectly, even though our compiler specs file and linker are still pointing
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| 30 | at <filename>/tools</filename>. We cannot adjust the specs and linker before
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| 31 | the Glibc install, because the Glibc autoconf tests would then give bogus
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| 32 | results and thus defeat our goal of achieving a clean build.</para>
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| 33 |
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[d0a6c4c] | 34 | <para>Before starting to build Glibc, remember to unset any environment
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| 35 | variables that override the default optimization flags.</para>
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[73aedd1d] | 36 |
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| 37 | <para>The Glibc documentation recommends building Glibc outside of the source
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| 38 | directory in a dedicated build directory:</para>
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| 39 |
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| 40 | <screen><userinput>mkdir ../glibc-build
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| 41 | cd ../glibc-build</userinput></screen>
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| 42 |
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| 43 | <para>Now prepare Glibc for compilation:</para>
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| 44 |
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[673b0d8] | 45 | <screen><userinput>../glibc-&glibc-version;-20031202/configure --prefix=/usr \
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| 46 | --disable-profile --enable-add-ons=linuxthreads \
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| 47 | --libexecdir=/usr/lib --with-headers=/usr/include \
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| 48 | --without-cvs</userinput></screen>
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[73aedd1d] | 49 |
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| 50 | <para>The meaning of the new configure options:</para>
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| 51 |
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| 52 | <itemizedlist>
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[c1b2c648] | 53 | <listitem><para><userinput>--libexecdir=/usr/lib</userinput>: This changes the
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| 54 | location of the <filename>pt_chown</filename> program from its default of
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| 55 | <filename class="directory">/usr/libexec</filename> to
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| 56 | <filename class="directory">/usr/lib</filename>. The use of
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[5c8d965] | 57 | <emphasis>libexec</emphasis> is considered not to be FHS-compliant because the
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| 58 | FHS doesn't even mention it.</para></listitem>
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[c1b2c648] | 59 |
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[73aedd1d] | 60 | <listitem><para><userinput>--with-headers=/usr/include</userinput>: This
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| 61 | ensures that the kernel headers in <filename>/usr/include</filename> are used
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| 62 | for this build. If you don't pass this switch then the headers from
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| 63 | <filename>/tools/include</filename> are used which of course is not ideal
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| 64 | (although they should be identical). Using this switch has the advantage
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| 65 | that you will be informed immediately should you have forgotten to install the
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| 66 | kernel headers into <filename>/usr/include</filename>.</para></listitem>
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| 67 | </itemizedlist>
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| 68 |
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| 69 | <para>Compile the package:</para>
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| 70 |
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| 71 | <screen><userinput>make</userinput></screen>
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| 72 |
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[90afe40d] | 73 | <important><para>The test suite for Glibc in this section is considered
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| 74 | <emphasis>critical</emphasis>. Our advice is to not skip it under any
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| 75 | circumstance.</para></important>
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| 76 |
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[73aedd1d] | 77 | <para>Test the results:</para>
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| 78 |
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| 79 | <screen><userinput>make check</userinput></screen>
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| 80 |
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[3be4d97] | 81 | <para>The test suite notes from <xref linkend="ch-tools-glibc"/> are still very much
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[73aedd1d] | 82 | appropriate here. Be sure to refer back there should you have any doubts.</para>
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| 83 |
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[1caa48e] | 84 | <para>Though it is a harmless message, the install stage of Glibc will
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| 85 | complain about the absence of <filename>/etc/ld.so.conf</filename>. Fix this
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| 86 | annoying little warning with:</para>
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| 87 |
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| 88 | <screen><userinput>touch /etc/ld.so.conf</userinput></screen>
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| 89 |
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[73aedd1d] | 90 | <para>And install the package:</para>
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| 91 |
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| 92 | <screen><userinput>make install</userinput></screen>
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| 93 |
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| 94 | <para>The locales that can make your system respond in a different language
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| 95 | weren't installed by the above command. Do it with this:</para>
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| 96 |
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| 97 | <screen><userinput>make localedata/install-locales</userinput></screen>
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| 98 |
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| 99 | <para>An alternative to running the previous command is to install only those
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[d0a6c4c] | 100 | locales which you need or want. This can be achieved by using the
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[90e3cb3] | 101 | <command>localedef</command> command. Information on this can be found in
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[d0a6c4c] | 102 | the <filename>INSTALL</filename> file in the Glibc source. However, there are
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| 103 | a number of locales that are essential for the tests of future packages to
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| 104 | pass, in particular, the <emphasis>libstdc++</emphasis> tests from GCC. The
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| 105 | following instructions, instead of the install-locales target above, will
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| 106 | install the minimum set of locales necessary for the tests to run
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| 107 | successfully:</para>
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[73aedd1d] | 108 |
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| 109 | <screen><userinput>mkdir -p /usr/lib/locale
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| 110 | localedef -i de_DE -f ISO-8859-1 de_DE
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| 111 | localedef -i de_DE@euro -f ISO-8859-15 de_DE@euro
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| 112 | localedef -i en_HK -f ISO-8859-1 en_HK
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| 113 | localedef -i en_PH -f ISO-8859-1 en_PH
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| 114 | localedef -i en_US -f ISO-8859-1 en_US
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| 115 | localedef -i es_MX -f ISO-8859-1 es_MX
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[673b0d8] | 116 | localedef -i fa_IR -f UTF-8 fa_IR
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[73aedd1d] | 117 | localedef -i fr_FR -f ISO-8859-1 fr_FR
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| 118 | localedef -i fr_FR@euro -f ISO-8859-15 fr_FR@euro
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| 119 | localedef -i it_IT -f ISO-8859-1 it_IT
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| 120 | localedef -i ja_JP -f EUC-JP ja_JP</userinput></screen>
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| 121 |
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| 122 | <para>Finally, build the linuxthreads man pages:</para>
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| 123 |
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[673b0d8] | 124 | <screen><userinput>make -C ../glibc-&glibc-version;-20031202/linuxthreads/man</userinput></screen>
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[73aedd1d] | 125 |
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| 126 | <para>And install these pages:</para>
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| 127 |
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[673b0d8] | 128 | <screen><userinput>make -C ../glibc-&glibc-version;-20031202/linuxthreads/man install</userinput></screen>
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[73aedd1d] | 129 |
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| 130 | </sect2>
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[5888299] | 131 |
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[342b176] | 132 |
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[673b0d8] | 133 | <sect2 id="conf-glibc"><title>Configuring Glibc</title>
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| 134 | <indexterm zone="conf-glibc"><primary sortas="e-/etc/nsswitch.conf">/etc/nsswitch.conf</primary></indexterm>
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| 135 | <indexterm zone="conf-glibc"><primary sortas="e-/etc/localtime">/etc/localtime</primary></indexterm>
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[342b176] | 136 |
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| 137 | <para>We need to create the <filename>/etc/nsswitch.conf</filename> file,
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| 138 | because, although Glibc provides defaults when this file is missing or corrupt,
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| 139 | the Glibc defaults don't work well with networking. Also, our time zone needs
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| 140 | to be set up.</para>
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| 141 |
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| 142 | <para>Create a new file <filename>/etc/nsswitch.conf</filename> by running the
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| 143 | following:</para>
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| 144 |
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| 145 | <screen><userinput>cat > /etc/nsswitch.conf << "EOF"</userinput>
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| 146 | # Begin /etc/nsswitch.conf
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| 147 |
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| 148 | passwd: files
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| 149 | group: files
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| 150 | shadow: files
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| 151 |
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| 152 | publickey: files
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| 153 |
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| 154 | hosts: files dns
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| 155 | networks: files
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| 156 |
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| 157 | protocols: db files
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| 158 | services: db files
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| 159 | ethers: db files
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| 160 | rpc: db files
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| 161 |
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| 162 | netgroup: db files
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| 163 |
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| 164 | # End /etc/nsswitch.conf
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| 165 | <userinput>EOF</userinput></screen>
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| 166 |
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| 167 | <para>To find out what time zone you're in, run the following script:</para>
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| 168 |
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| 169 | <screen><userinput>tzselect</userinput></screen>
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| 170 |
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| 171 | <para>When you've answered a few questions about your location, the script will
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| 172 | output the name of your time zone, something like <emphasis>EST5EDT</emphasis>
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| 173 | or <emphasis>Canada/Eastern</emphasis>. Then create the
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| 174 | <filename>/etc/localtime</filename> file by running:</para>
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| 175 |
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| 176 | <screen><userinput>cp --remove-destination /usr/share/zoneinfo/Canada/Eastern /etc/localtime</userinput></screen>
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| 177 |
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| 178 | <para>The meaning of the option:</para>
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| 179 |
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| 180 | <itemizedlist>
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| 181 | <listitem><para><userinput>--remove-destination</userinput>: This is needed to
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| 182 | force removal of the already existing symbolic link. The reason why we copy
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| 183 | instead of symlink is to cover the situation where <filename>/usr</filename> is
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| 184 | on a separate partition. This could matter, for example, when booted into single
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| 185 | user mode.</para></listitem>
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| 186 | </itemizedlist>
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| 187 |
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| 188 | <para>Of course, instead of <emphasis>Canada/Eastern</emphasis>, fill in
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| 189 | the name of the time zone that the <command>tzselect</command> script
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| 190 | gave you.</para>
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| 191 |
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| 192 | </sect2>
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| 193 |
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| 194 |
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[673b0d8] | 195 | <sect2 id="conf-ld">
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[342b176] | 196 | <title>Configuring Dynamic Loader</title>
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[673b0d8] | 197 | <indexterm zone="conf-ld"><primary sortas="e-/etc/ld.so.conf">/etc/ld.so.conf</primary></indexterm>
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[342b176] | 198 |
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| 199 | <para>By default, the dynamic loader
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[673b0d8] | 200 | (<filename>/lib/ld-linux.so.2</filename>) searches through <filename
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| 201 | class="directory">/lib</filename> and <filename class="directory">/usr/lib</filename>
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| 202 | for dynamic libraries that are needed
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[342b176] | 203 | by programs when you run them. However, if there are libraries in
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| 204 | directories other than <filename class="directory">/lib</filename> and
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| 205 | <filename class="directory">/usr/lib</filename>, you need to add them to
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| 206 | the <filename>/etc/ld.so.conf</filename> file for the dynamic
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| 207 | loader to find them. Two directories that are commonly known to contain
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[673b0d8] | 208 | additional libraries are <filename class="directory">/usr/local/lib</filename>
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| 209 | and <filename class="directory">/opt/lib</filename>, so we add those directories to the
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[342b176] | 210 | dynamic loader's search path.</para>
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| 211 |
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| 212 | <para>Create a new file <filename>/etc/ld.so.conf</filename> by running the
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| 213 | following:</para>
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| 214 |
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| 215 | <screen><userinput>cat > /etc/ld.so.conf << "EOF"</userinput>
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| 216 | # Begin /etc/ld.so.conf
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| 217 |
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| 218 | /usr/local/lib
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| 219 | /opt/lib
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| 220 |
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| 221 | # End /etc/ld.so.conf
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| 222 | <userinput>EOF</userinput></screen>
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| 223 |
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| 224 | </sect2>
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[5888299] | 225 |
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| 226 |
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[673b0d8] | 227 | <sect2 id="contents-glibc"><title>Contents of Glibc</title>
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| 228 |
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| 229 | <para><emphasis>Installed programs</emphasis>: catchsegv, gencat, getconf,
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| 230 | getent, glibcbug, iconv, iconvconfig, ldconfig, ldd, lddlibc4, locale,
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| 231 | localedef, mtrace, nscd, nscd_nischeck, pcprofiledump, pt_chown, rpcgen,
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| 232 | rpcinfo, sln, sprof, tzselect, xtrace, zdump and zic</para>
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| 233 |
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| 234 | <para><emphasis>Installed libraries</emphasis>: ld.so, libBrokenLocale.[a,so],
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| 235 | libSegFault.so, libanl.[a,so], libbsd-compat.a, libc.[a,so], libc_nonshared.a,
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| 236 | libcrypt.[a,so], libdl.[a,so], libg.a, libieee.a, libm.[a,so], libmcheck.a,
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| 237 | libmemusage.so, libnsl.a, libnss_compat.so, libnss_dns.so, libnss_files.so,
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| 238 | libnss_hesiod.so, libnss_nis.so, libnss_nisplus.so, libpcprofile.so,
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| 239 | libpthread.[a,so], libresolv.[a,so], librpcsvc.a, librt.[a,so], libthread_db.so
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| 240 | and libutil.[a,so]</para>
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| 241 |
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| 242 | </sect2>
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| 243 |
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| 244 |
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| 245 | <sect2><title>Short descriptions</title>
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| 246 |
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| 247 | <indexterm zone="ch-system-glibc catchsegv"><primary sortas="b-catchsegv">catchsegv</primary></indexterm>
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| 248 | <para id="catchsegv"><command>catchsegv</command> can be used to create a stack trace
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| 249 | when a program terminates with a segmentation fault.</para>
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| 250 |
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| 251 | <indexterm zone="ch-system-glibc gencat"><primary sortas="b-gencat">gencat</primary></indexterm>
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| 252 | <para id="gencat"><command>gencat</command> generates message catalogues.</para>
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| 253 |
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| 254 | <indexterm zone="ch-system-glibc getconf"><primary sortas="b-getconf">getconf</primary></indexterm>
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| 255 | <para id="getconf"><command>getconf</command> displays the system configuration values
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| 256 | for file system specific variables.</para>
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| 257 |
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| 258 | <indexterm zone="ch-system-glibc getent"><primary sortas="b-getent">getent</primary></indexterm>
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| 259 | <para id="getent"><command>getent</command> gets entries from an administrative
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| 260 | database.</para>
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| 261 |
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| 262 | <indexterm zone="ch-system-glibc glibcbug"><primary sortas="b-glibcbug">glibcbug</primary></indexterm>
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| 263 | <para id="glibcbug"><command>glibcbug</command> creates a bug report and mails it to the
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| 264 | bug email address.</para>
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| 265 |
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| 266 | <indexterm zone="ch-system-glibc iconv"><primary sortas="b-iconv">iconv</primary></indexterm>
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| 267 | <para id="iconv"><command>iconv</command> performs character set conversion.</para>
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| 268 |
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| 269 | <indexterm zone="ch-system-glibc iconvconfig"><primary sortas="b-iconvconfig">iconvconfig</primary></indexterm>
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| 270 | <para id="iconvconfig"><command>iconvconfig</command> creates fastloading iconv module
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| 271 | configuration file.</para>
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| 272 |
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| 273 | <indexterm zone="ch-system-glibc ldconfig"><primary sortas="b-ldconfig">ldconfig</primary></indexterm>
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| 274 | <para id="ldconfig"><command>ldconfig</command> configures the dynamic linker runtime
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| 275 | bindings.</para>
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| 276 |
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| 277 | <indexterm zone="ch-system-glibc ldd"><primary sortas="b-ldd">ldd</primary></indexterm>
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| 278 | <para id="ldd"><command>ldd</command> reports which shared libraries are required
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| 279 | by each given program or shared library.</para>
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| 280 |
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| 281 | <indexterm zone="ch-system-glibc lddlibc4"><primary sortas="b-lddlibc4">lddlibc4</primary></indexterm>
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| 282 | <para id="lddlibc4"><command>lddlibc4</command> assists ldd with object files.</para>
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| 283 |
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| 284 | <indexterm zone="ch-system-glibc locale"><primary sortas="b-locale">locale</primary></indexterm>
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| 285 | <para id="locale"><command>locale</command> is a Perl program that tells the compiler
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| 286 | to enable or disable the use of POSIX locales for built-in operations.</para>
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| 287 |
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| 288 | <indexterm zone="ch-system-glibc localedef"><primary sortas="b-localedef">localedef</primary></indexterm>
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| 289 | <para id="localedef"><command>localedef</command> compiles locale specifications.</para>
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| 290 |
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| 291 | <indexterm zone="ch-system-glibc mtrace"><primary sortas="b-mtrace">mtrace</primary></indexterm>
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| 292 | <para id="mtrace"><command>mtrace</command>...</para>
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| 293 |
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| 294 | <indexterm zone="ch-system-glibc nscd"><primary sortas="b-nscd">nscd</primary></indexterm>
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| 295 | <para id="nscd"><command>nscd</command> is a name service cache daemon providing a
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| 296 | cache for the most common name service requests.</para>
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| 297 |
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| 298 | <indexterm zone="ch-system-glibc nscd_nischeck"><primary sortas="b-nscd_nischeck">nscd_nischeck</primary></indexterm>
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| 299 | <para id="nscd_nischeck"><command>nscd_nischeck</command> checks whether or not secure mode
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| 300 | is necessary for NIS+ lookup.</para>
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| 301 |
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| 302 | <indexterm zone="ch-system-glibc pcprofiledump"><primary sortas="b-pcprofiledump">pcprofiledump</primary></indexterm>
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| 303 | <para id="pcprofiledump"><command>pcprofiledump</command> dumps information generated by
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| 304 | PC profiling.</para>
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| 305 |
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| 306 | <indexterm zone="ch-system-glibc pt_chown"><primary sortas="b-pt_chown">pt_chown</primary></indexterm>
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| 307 | <para id="pt_chown"><command>pt_chown</command> is a helper program for grantpt to set
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| 308 | the owner, group and access permissions of a slave pseudo terminal.</para>
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| 309 |
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| 310 | <indexterm zone="ch-system-glibc rpcgen"><primary sortas="b-rpcgen">rpcgen</primary></indexterm>
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| 311 | <para id="rpcgen"><command>rpcgen</command> generates C code to implement the
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| 312 | RPC protocol.</para>
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| 313 |
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| 314 | <indexterm zone="ch-system-glibc rpcinfo"><primary sortas="b-rpcinfo">rpcinfo</primary></indexterm>
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| 315 | <para id="rpcinfo"><command>rpcinfo</command> makes an RPC call to an RPC server.</para>
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| 316 |
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| 317 | <indexterm zone="ch-system-glibc sln"><primary sortas="b-sln">sln</primary></indexterm>
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| 318 | <para id="sln"><command>sln</command> is used to make symbolic links. The program
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| 319 | is statically linked, so it is useful for making symbolic links to dynamic
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| 320 | libraries if the dynamic linking system for some reason is nonfunctional.</para>
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| 321 |
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| 322 | <indexterm zone="ch-system-glibc sprof"><primary sortas="b-sprof">sprof</primary></indexterm>
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| 323 | <para id="sprof"><command>sprof</command> reads and displays shared object profiling
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| 324 | data.</para>
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[4931dd3] | 325 |
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[673b0d8] | 326 | <indexterm zone="ch-system-glibc tzselect"><primary sortas="b-tzselect">tzselect</primary></indexterm>
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| 327 | <para id="tzselect"><command>tzselect</command> asks the user about the location of the
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| 328 | system and reports the corresponding time zone description.</para>
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| 329 |
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| 330 | <indexterm zone="ch-system-glibc xtrace"><primary sortas="b-xtrace">xtrace</primary></indexterm>
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| 331 | <para id="xtrace"><command>xtrace</command> traces the execution of a program by
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| 332 | printing the currently executed function.</para>
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| 333 |
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| 334 | <indexterm zone="ch-system-glibc zdump"><primary sortas="b-zdump">zdump</primary></indexterm>
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| 335 | <para id="zdump"><command>zdump</command> is the time zone dumper.</para>
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| 336 |
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| 337 | <indexterm zone="ch-system-glibc zic"><primary sortas="b-zic">zic</primary></indexterm>
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| 338 | <para id="zic"><command>zic</command> is the time zone compiler.</para>
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| 339 |
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| 340 | <indexterm zone="ch-system-glibc ld.so"><primary sortas="c-ld.so">ld.so</primary></indexterm>
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| 341 | <para id="ld.so"><command>ld.so</command> is the helper program for shared library
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| 342 | executables.</para>
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| 343 |
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| 344 | <indexterm zone="ch-system-glibc libBrokenLocale"><primary sortas="c-libBrokenLocale">libBrokenLocale</primary></indexterm>
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| 345 | <para id="libBrokenLocale"><command>libBrokenLocale</command> is used by programs, such as
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| 346 | Mozilla, to solve broken locales.</para>
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| 347 |
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| 348 | <indexterm zone="ch-system-glibc libSegFault"><primary sortas="c-libSegFault">libSegFault</primary></indexterm>
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| 349 | <para id="libSegFault"><command>libSegFault</command> is a segmentation fault signal
|
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| 350 | handler. It tries to catch segfaults.</para>
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| 351 |
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| 352 | <indexterm zone="ch-system-glibc libanl"><primary sortas="c-libanl">libanl</primary></indexterm>
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| 353 | <para id="libanl"><command>libanl</command> is an asynchronous name lookup
|
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| 354 | library.</para>
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| 355 |
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| 356 | <indexterm zone="ch-system-glibc libbsd-compat"><primary sortas="c-libbsd-compat">libbsd-compat</primary></indexterm>
|
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| 357 | <para id="libbsd-compat"><command>libbsd-compat</command> provides the portability needed
|
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| 358 | in order to run certain BSD programs under Linux.</para>
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| 359 |
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| 360 | <indexterm zone="ch-system-glibc libc"><primary sortas="c-libc">libc</primary></indexterm>
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| 361 | <para id="libc"><command>libc</command> is the main C library -- a collection of
|
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| 362 | commonly used functions.</para>
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| 363 |
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| 364 | <indexterm zone="ch-system-glibc libcrypt"><primary sortas="c-libcrypt">libcrypt</primary></indexterm>
|
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| 365 | <para id="libcrypt"><command>libcrypt</command> is the cryptography library.</para>
|
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| 366 |
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| 367 | <indexterm zone="ch-system-glibc libdl"><primary sortas="c-libdl">libdl</primary></indexterm>
|
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| 368 | <para id="libdl"><command>libdl</command> is the dynamic linking interface library.</para>
|
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| 369 |
|
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| 370 | <indexterm zone="ch-system-glibc libg"><primary sortas="c-libg">libg</primary></indexterm>
|
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| 371 | <para id="libg"><command>libg</command> is a runtime library for g++.</para>
|
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| 372 |
|
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| 373 | <indexterm zone="ch-system-glibc libieee"><primary sortas="c-libieee">libieee</primary></indexterm>
|
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| 374 | <para id="libieee"><command>libieee</command> is the IEEE floating point library.</para>
|
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| 375 |
|
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| 376 | <indexterm zone="ch-system-glibc libm"><primary sortas="c-libm">libm</primary></indexterm>
|
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| 377 | <para id="libm"><command>libm</command> is the mathematical library.</para>
|
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| 378 |
|
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| 379 | <indexterm zone="ch-system-glibc libmcheck"><primary sortas="c-libmcheck">libmcheck</primary></indexterm>
|
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| 380 | <para id="libmcheck"><command>libmcheck</command> contains code run at boot.</para>
|
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| 381 |
|
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| 382 | <indexterm zone="ch-system-glibc libmemusage"><primary sortas="c-libmemusage">libmemusage</primary></indexterm>
|
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| 383 | <para id="libmemusage"><command>libmemusage</command> is used by memusage to help collect
|
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| 384 | information about the memory usage of a program.</para>
|
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| 385 |
|
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| 386 | <indexterm zone="ch-system-glibc libnsl"><primary sortas="c-libnsl">libnsl</primary></indexterm>
|
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| 387 | <para id="libnsl"><command>libnsl</command> is the network services library.</para>
|
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| 388 |
|
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| 389 | <indexterm zone="ch-system-glibc libnss"><primary sortas="c-libnss*">libnss*</primary></indexterm>
|
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| 390 | <para id="libnss"><command>libnss*</command> are the Name Service Switch libraries,
|
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| 391 | containing functions for resolving host names, user names, group names,
|
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| 392 | aliases, services, protocols,and the like.</para>
|
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| 393 |
|
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| 394 | <indexterm zone="ch-system-glibc libpcprofile"><primary sortas="c-libpcprofile">libpcprofile</primary></indexterm>
|
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| 395 | <para id="libpcprofile"><command>libpcprofile</command> contains profiling functions used
|
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| 396 | to track the amount of CPU time spent in which source code lines.</para>
|
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| 397 |
|
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| 398 | <indexterm zone="ch-system-glibc libpthread"><primary sortas="c-libpthread">libpthread</primary></indexterm>
|
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| 399 | <para id="libpthread"><command>libpthread</command> is the POSIX threads library.</para>
|
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| 400 |
|
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| 401 | <indexterm zone="ch-system-glibc libresolv"><primary sortas="c-libresolv">libresolv</primary></indexterm>
|
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| 402 | <para id="libresolv"><command>libresolv</command> contains functions for creating,
|
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| 403 | sending, and interpreting packets to the Internet domain name servers.</para>
|
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| 404 |
|
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| 405 | <indexterm zone="ch-system-glibc librpcsvc"><primary sortas="c-librpcsvc">librpcsvc</primary></indexterm>
|
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| 406 | <para id="librpcsvc"><command>librpcsvc</command>contains functions providing
|
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| 407 | miscellaneous RPC services.</para>
|
---|
| 408 |
|
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| 409 | <indexterm zone="ch-system-glibc librt"><primary sortas="c-librt">librt</primary></indexterm>
|
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| 410 | <para id="librt"><command>librt</command> contains functions providing most of the
|
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| 411 | interfaces specified by the POSIX.1b Realtime Extension.</para>
|
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| 412 |
|
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| 413 | <indexterm zone="ch-system-glibc libthread_db"><primary sortas="c-libthread_db">libthread_db</primary></indexterm>
|
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| 414 | <para id="libthread_db"><command>libthread_db</command> contains functions useful for
|
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| 415 | building debuggers for multi-threaded programs.</para>
|
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| 416 |
|
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| 417 | <indexterm zone="ch-system-glibc libutil"><primary sortas="c-libutil">libutil</primary></indexterm>
|
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| 418 | <para id="libutil"><command>libutil</command> contains code for "standard" functions
|
---|
| 419 | used in many different Unix utilities.</para>
|
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| 420 |
|
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| 421 | </sect2>
|
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| 422 |
|
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| 423 |
|
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| 424 |
|
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| 425 | </sect1>
|
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