[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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[752f4e5] | 6 | <sect1 id="ch-system-glibc" role="wrap">
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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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[a001133] | 12 | <sect2 role="package"><title/>
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[69993f4] | 13 | <para>The Glibc package contains the main C library. This library provides
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[5888299] | 14 | the basic routines for allocating memory, searching directories, opening and
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[69993f4] | 15 | closing files, reading and writing files, string handling, pattern matching,
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[5888299] | 16 | arithmetic, and so on.</para>
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| 17 |
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[a001133] | 18 | <segmentedlist>
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| 19 | <segtitle>&buildtime;</segtitle>
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| 20 | <segtitle>&diskspace;</segtitle>
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| 21 | <seglistitem><seg>12.3 SBU</seg><seg>784 MB</seg></seglistitem>
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| 22 | </segmentedlist>
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[673b0d8] | 23 |
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[a001133] | 24 | <segmentedlist>
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| 25 | <segtitle>Glibc installation depends on</segtitle>
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| 26 | <seglistitem><seg>Bash, Binutils, Coreutils, Diffutils,
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[69993f4] | 27 | Gawk, GCC, Gettext, Grep, Make, Perl, Sed, and Texinfo</seg></seglistitem>
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[a001133] | 28 | </segmentedlist>
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| 29 | </sect2>
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[3554fa3a] | 30 |
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[a001133] | 31 | <sect2 role="installation">
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[5888299] | 32 | <title>Installation of Glibc</title>
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[73aedd1d] | 33 |
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[24a08b9] | 34 | <para>This package is known to have issues when its default
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| 35 | optimization flags (including the <parameter>-march</parameter> and
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| 36 | <parameter>-mcpu</parameter> options) are changed. If any environment
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| 37 | variables that override default optimizations have been defined, such
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[752f4e5] | 38 | as <envar>CFLAGS</envar> and <envar>CXXFLAGS</envar>,
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[24a08b9] | 39 | unset them when building GCC.</para>
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| 40 |
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[ef13657] | 41 | <para>The Glibc build system is self-contained and will install
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| 42 | perfectly, even though the compiler specs file and linker are still
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| 43 | pointing at <filename class="directory">/tools</filename>. The specs
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| 44 | and linker cannot be adjusted before the Glibc install because the
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[69993f4] | 45 | Glibc autoconf tests would give false results and defeat the goal
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[ef13657] | 46 | of achieving a clean build.</para>
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[73aedd1d] | 47 |
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| 48 | <para>The Glibc documentation recommends building Glibc outside of the source
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| 49 | directory in a dedicated build directory:</para>
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| 50 |
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| 51 | <screen><userinput>mkdir ../glibc-build
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| 52 | cd ../glibc-build</userinput></screen>
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| 53 |
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[69993f4] | 54 | <para>Prepare Glibc for compilation:</para>
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[73aedd1d] | 55 |
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[9dfc02f] | 56 | <screen><userinput>../glibc-&glibc-version;/configure --prefix=/usr \
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| 57 | --disable-profile --enable-add-ons=nptl --with-tls \
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[4fdb55e] | 58 | --with-__thread --enable-kernel=2.6.0 --without-cvs \
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[ef13657] | 59 | --libexecdir=/usr/lib/glibc \
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[9dfc02f] | 60 | --with-headers=/tools/glibc-kernheaders</userinput></screen>
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[73aedd1d] | 61 |
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[ef13657] | 62 | <para>The meaning of the new configure option:</para>
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| 63 |
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| 64 | <variablelist>
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| 65 | <varlistentry>
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| 66 | <term><parameter>--libexecdir=/usr/lib/glibc</parameter></term>
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| 67 | <listitem><para>This changes the location of the
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| 68 | <command>pt_chown</command> program from its default of <filename
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| 69 | class="directory">/usr/libexec</filename> to <filename
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| 70 | class="directory">/usr/lib/glibc</filename>.</para></listitem>
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| 71 | </varlistentry>
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| 72 | </variablelist>
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| 73 |
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[73aedd1d] | 74 | <para>Compile the package:</para>
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| 75 |
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| 76 | <screen><userinput>make</userinput></screen>
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| 77 |
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[ef13657] | 78 | <important><para>In this section, the test suite for Glibc is
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| 79 | considered critical. Do not skip it under any
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[90afe40d] | 80 | circumstance.</para></important>
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| 81 |
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[73aedd1d] | 82 | <para>Test the results:</para>
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| 83 |
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| 84 | <screen><userinput>make check</userinput></screen>
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| 85 |
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[ef13657] | 86 | <para>The Glibc test suite is highly dependent on certain functions of
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| 87 | the host system, in particular the kernel. In general, the Glibc test
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| 88 | suite is always expected to pass. However, in certain circumstances,
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| 89 | some failures are unavoidable. This is a list of the most common
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| 90 | issues:</para>
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[d878ce3] | 91 |
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| 92 | <itemizedlist>
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| 93 | <listitem><para>The <emphasis>math</emphasis> tests sometimes fail when running
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| 94 | on systems where the CPU is not a relatively new genuine Intel or authentic AMD.
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| 95 | Certain optimization settings are also known to be a factor here.</para></listitem>
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| 96 |
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| 97 | <listitem><para>The <emphasis>gettext</emphasis> test sometimes fails due to
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| 98 | host system issues. The exact reasons are not yet clear.</para></listitem>
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| 99 |
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[ef13657] | 100 | <listitem><para>The <emphasis>atime</emphasis> test sometimes fails
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| 101 | when the LFS partition is mounted with the
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[69993f4] | 102 | <parameter>noatime</parameter> option.</para></listitem>
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[ef13657] | 103 |
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| 104 | <listitem><para>The <emphasis>shm</emphasis> test can fail when the
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| 105 | host system is using the <systemitem
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| 106 | class="filesystem">devfs</systemitem> file system but does not have
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| 107 | the <systemitem class="filesystem">tmpfs</systemitem> file system
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| 108 | mounted at <filename class="directory">/dev/shm</filename>. This
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[752f4e5] | 109 | occurs because of a lack of support for <systemitem
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| 110 | class="filesystem">tmpfs</systemitem> in the
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[ef13657] | 111 | kernel.</para></listitem>
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| 112 |
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| 113 | <listitem><para>When running on older and slower hardware, some tests
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| 114 | can fail because of test timeouts being exceeded.</para></listitem>
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[d878ce3] | 115 | </itemizedlist>
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[73aedd1d] | 116 |
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[1caa48e] | 117 | <para>Though it is a harmless message, the install stage of Glibc will
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[ef13657] | 118 | complain about the absence of <filename>/etc/ld.so.conf</filename>.
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| 119 | Prevent this warning with:</para>
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[1caa48e] | 120 |
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| 121 | <screen><userinput>touch /etc/ld.so.conf</userinput></screen>
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| 122 |
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[ef13657] | 123 | <para>Install the package:</para>
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[73aedd1d] | 124 |
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| 125 | <screen><userinput>make install</userinput></screen>
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| 126 |
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[ef13657] | 127 | <para>The locales that can make the system respond in a different
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| 128 | language were not installed by the above command. Install this
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| 129 | with:</para>
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[73aedd1d] | 130 |
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| 131 | <screen><userinput>make localedata/install-locales</userinput></screen>
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| 132 |
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[69993f4] | 133 | <para>To save time, an alternative to running the
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[ef13657] | 134 | previous command (which generates and installs every locale Glibc is
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| 135 | aware of) is to install only those locales that are wanted and needed.
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| 136 | This can be achieved by using the <command>localedef</command>
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| 137 | command. Information on this command is located in the
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| 138 | <filename>INSTALL</filename> file in the Glibc source. However, there
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| 139 | are a number of locales that are essential in order for the tests of
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| 140 | future packages to pass, in particular, the
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| 141 | <emphasis>libstdc++</emphasis> tests from GCC. The following
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[752f4e5] | 142 | instructions, instead of the <parameter>install-locales</parameter>
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[ef13657] | 143 | target used above, will install the minimum set of locales necessary
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| 144 | for the tests to run successfully:</para>
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[73aedd1d] | 145 |
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| 146 | <screen><userinput>mkdir -p /usr/lib/locale
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| 147 | localedef -i de_DE -f ISO-8859-1 de_DE
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| 148 | localedef -i de_DE@euro -f ISO-8859-15 de_DE@euro
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| 149 | localedef -i en_HK -f ISO-8859-1 en_HK
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| 150 | localedef -i en_PH -f ISO-8859-1 en_PH
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| 151 | localedef -i en_US -f ISO-8859-1 en_US
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| 152 | localedef -i es_MX -f ISO-8859-1 es_MX
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[673b0d8] | 153 | localedef -i fa_IR -f UTF-8 fa_IR
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[73aedd1d] | 154 | localedef -i fr_FR -f ISO-8859-1 fr_FR
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| 155 | localedef -i fr_FR@euro -f ISO-8859-15 fr_FR@euro
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| 156 | localedef -i it_IT -f ISO-8859-1 it_IT
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| 157 | localedef -i ja_JP -f EUC-JP ja_JP</userinput></screen>
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| 158 |
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[ef13657] | 159 | <para>Some locales installed by the <command>make
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| 160 | localedata/install-locales</command> command above are not properly
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| 161 | supported by some applications that are in the LFS and BLFS books.
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| 162 | Because of the various problems that arise due to application
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| 163 | programmers making assumptions that break in such locales, LFS should
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| 164 | not be used in locales that utilize multibyte character sets
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| 165 | (including UTF-8) or right-to-left writing order. Numerous unofficial
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| 166 | and unstable patches are required to fix these problems, and it has
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[69993f4] | 167 | been decided by the LFS developers not to support such complex locales. This applies to the
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| 168 | ja_JP and fa_IR locales as well—they have been installed only for
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| 169 | GCC and Gettext tests to pass, and the <command>watch</command> program
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[ef13657] | 170 | (part of the Procps package) does not work properly in them. Various
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| 171 | attempts to circumvent these restrictions are documented in
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| 172 | internationalization-related hints.</para>
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| 173 |
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| 174 | <para>Build the linuxthreads man pages, which are a great reference
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[9dfc02f] | 175 | on the threading API (applicable to NPTL as well):</para>
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[73aedd1d] | 176 |
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[9dfc02f] | 177 | <screen><userinput>make -C ../glibc-&glibc-version;/linuxthreads/man</userinput></screen>
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[73aedd1d] | 178 |
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[ef13657] | 179 | <para>Install these pages:</para>
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[73aedd1d] | 180 |
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[9dfc02f] | 181 | <screen><userinput>make -C ../glibc-&glibc-version;/linuxthreads/man install</userinput></screen>
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[73aedd1d] | 182 |
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| 183 | </sect2>
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[5888299] | 184 |
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[8c16bf7] | 185 | <sect2 id="conf-glibc" role="configuration"><title>Configuring Glibc</title>
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[673b0d8] | 186 | <indexterm zone="conf-glibc"><primary sortas="e-/etc/nsswitch.conf">/etc/nsswitch.conf</primary></indexterm>
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| 187 | <indexterm zone="conf-glibc"><primary sortas="e-/etc/localtime">/etc/localtime</primary></indexterm>
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[342b176] | 188 |
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[ef13657] | 189 | <para>The <filename>/etc/nsswitch.conf</filename> file needs to be
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| 190 | created because, although Glibc provides defaults when this file is
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| 191 | missing or corrupt, the Glibc defaults do not work well with
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| 192 | networking. The time zone also needs to be set up.</para>
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[342b176] | 193 |
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| 194 | <para>Create a new file <filename>/etc/nsswitch.conf</filename> by running the
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| 195 | following:</para>
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| 196 |
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[bb55064] | 197 | <screen><userinput>cat > /etc/nsswitch.conf << "EOF"
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[3890f5a] | 198 | <literal># Begin /etc/nsswitch.conf
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[342b176] | 199 |
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| 200 | passwd: files
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| 201 | group: files
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| 202 | shadow: files
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| 203 |
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| 204 | hosts: files dns
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| 205 | networks: files
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| 206 |
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[4a80bec] | 207 | protocols: files
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| 208 | services: files
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| 209 | ethers: files
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| 210 | rpc: files
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[342b176] | 211 |
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[3890f5a] | 212 | # End /etc/nsswitch.conf</literal>
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[bb55064] | 213 | EOF</userinput></screen>
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[342b176] | 214 |
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[69993f4] | 215 | <para>To determine the local time zone, run the following script:</para>
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[342b176] | 216 |
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| 217 | <screen><userinput>tzselect</userinput></screen>
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| 218 |
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[ef13657] | 219 | <para>After answering a few questions about the location, the script
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| 220 | will output the name of the time zone (e.g.,
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| 221 | <emphasis>EST5EDT</emphasis> or <emphasis>Canada/Eastern</emphasis>).
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| 222 | Then create the <filename>/etc/localtime</filename> file by
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| 223 | running:</para>
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[342b176] | 224 |
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[00cc7ce] | 225 | <screen><userinput>cp --remove-destination /usr/share/zoneinfo/<replaceable>[xxx]</replaceable> \
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| 226 | /etc/localtime</userinput></screen>
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[342b176] | 227 |
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[ef13657] | 228 | <para>Replace [xxx] with the name of the time zone that the
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| 229 | <command>tzselect</command> provided (e.g., Canada/Eastern).</para>
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| 230 |
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| 231 | <para>The meaning of the cp option:</para>
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[342b176] | 232 |
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[b8a819f] | 233 | <variablelist>
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| 234 | <varlistentry>
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[bb55064] | 235 | <term><parameter>--remove-destination</parameter></term>
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[ef13657] | 236 | <listitem><para>This is needed to force removal of the already
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| 237 | existing symbolic link. The reason for copying the file instead of
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| 238 | using a symlink is to cover the situation where <filename
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| 239 | class="directory">/usr</filename> is on a separate partition. This
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| 240 | could be important when booted into single user
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| 241 | mode.</para></listitem>
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[b8a819f] | 242 | </varlistentry>
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| 243 | </variablelist>
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[342b176] | 244 |
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| 245 | </sect2>
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| 246 |
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| 247 |
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[8c16bf7] | 248 | <sect2 id="conf-ld" role="configuration">
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[342b176] | 249 | <title>Configuring Dynamic Loader</title>
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[673b0d8] | 250 | <indexterm zone="conf-ld"><primary sortas="e-/etc/ld.so.conf">/etc/ld.so.conf</primary></indexterm>
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[342b176] | 251 |
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[ef13657] | 252 | <para>By default, the dynamic loader (<filename
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| 253 | class="libraryfile">/lib/ld-linux.so.2</filename>) searches through
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| 254 | <filename class="directory">/lib</filename> and <filename
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| 255 | class="directory">/usr/lib</filename> for dynamic libraries that are
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| 256 | needed by programs as they are run. However, if there are libraries in
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[342b176] | 257 | directories other than <filename class="directory">/lib</filename> and
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[ef13657] | 258 | <filename class="directory">/usr/lib</filename>, these need to be
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[69993f4] | 259 | added to the <filename>/etc/ld.so.conf</filename> file in order
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[ef13657] | 260 | for the dynamic loader to find them. Two directories that are commonly
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| 261 | known to contain additional libraries are <filename
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| 262 | class="directory">/usr/local/lib</filename> and <filename
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| 263 | class="directory">/opt/lib</filename>, so add those directories to the
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[342b176] | 264 | dynamic loader's search path.</para>
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| 265 |
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| 266 | <para>Create a new file <filename>/etc/ld.so.conf</filename> by running the
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| 267 | following:</para>
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| 268 |
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[bb55064] | 269 | <screen><userinput>cat > /etc/ld.so.conf << "EOF"
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[3890f5a] | 270 | <literal># Begin /etc/ld.so.conf
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[342b176] | 271 |
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| 272 | /usr/local/lib
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| 273 | /opt/lib
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| 274 |
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[3890f5a] | 275 | # End /etc/ld.so.conf</literal>
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[bb55064] | 276 | EOF</userinput></screen>
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[342b176] | 277 |
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| 278 | </sect2>
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[5888299] | 279 |
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| 280 |
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[c6cb3aa] | 281 | <sect2 id="contents-glibc" role="content"><title>Contents of Glibc</title>
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[673b0d8] | 282 |
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[c6cb3aa] | 283 | <segmentedlist>
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| 284 | <segtitle>Installed programs</segtitle>
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| 285 | <segtitle>Installed libraries</segtitle>
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| 286 | <seglistitem><seg>catchsegv, gencat, getconf,
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[673b0d8] | 287 | getent, glibcbug, iconv, iconvconfig, ldconfig, ldd, lddlibc4, locale,
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| 288 | localedef, mtrace, nscd, nscd_nischeck, pcprofiledump, pt_chown, rpcgen,
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[69993f4] | 289 | rpcinfo, sln, sprof, tzselect, xtrace, zdump, and zic</seg>
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[c6cb3aa] | 290 | <seg>ld.so, libBrokenLocale.[a,so],
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[dadb405] | 291 | libSegFault.so, libanl.[a,so], libbsd-compat.a, libc.[a,so],
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[673b0d8] | 292 | libcrypt.[a,so], libdl.[a,so], libg.a, libieee.a, libm.[a,so], libmcheck.a,
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| 293 | libmemusage.so, libnsl.a, libnss_compat.so, libnss_dns.so, libnss_files.so,
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| 294 | libnss_hesiod.so, libnss_nis.so, libnss_nisplus.so, libpcprofile.so,
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[69993f4] | 295 | libpthread.[a,so], libresolv.[a,so], librpcsvc.a, librt.[a,so],
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| 296 | libthread_db.so, and libutil.[a,so]</seg></seglistitem>
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[c6cb3aa] | 297 | </segmentedlist>
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[673b0d8] | 298 |
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[3ed279f] | 299 | <variablelist><bridgehead renderas="sect3">Short descriptions</bridgehead>
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| 300 | <?dbfo list-presentation="list"?>
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[673b0d8] | 301 |
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[b8a819f] | 302 | <varlistentry id="catchsegv">
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| 303 | <term><command>catchsegv</command></term>
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[c6cb3aa] | 304 | <listitem>
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[ef13657] | 305 | <para>can be used to create a stack trace when a program
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| 306 | terminates with a segmentation fault.</para>
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[3ed279f] | 307 | <indexterm zone="ch-system-glibc catchsegv"><primary sortas="b-catchsegv">catchsegv</primary></indexterm>
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[c6cb3aa] | 308 | </listitem>
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| 309 | </varlistentry>
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[673b0d8] | 310 |
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[b8a819f] | 311 | <varlistentry id="gencat">
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| 312 | <term><command>gencat</command></term>
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[c6cb3aa] | 313 | <listitem>
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| 314 | <para>generates message catalogues.</para>
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[3ed279f] | 315 | <indexterm zone="ch-system-glibc gencat"><primary sortas="b-gencat">gencat</primary></indexterm>
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[c6cb3aa] | 316 | </listitem>
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| 317 | </varlistentry>
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[673b0d8] | 318 |
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[b8a819f] | 319 | <varlistentry id="getconf">
|
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| 320 | <term><command>getconf</command></term>
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[c6cb3aa] | 321 | <listitem>
|
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| 322 | <para>displays the system configuration values for file system specific variables.</para>
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[3ed279f] | 323 | <indexterm zone="ch-system-glibc getconf"><primary sortas="b-getconf">getconf</primary></indexterm>
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[c6cb3aa] | 324 | </listitem>
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| 325 | </varlistentry>
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[673b0d8] | 326 |
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[b8a819f] | 327 | <varlistentry id="getent">
|
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| 328 | <term><command>getent</command></term>
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[c6cb3aa] | 329 | <listitem>
|
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| 330 | <para>gets entries from an administrative database.</para>
|
---|
[3ed279f] | 331 | <indexterm zone="ch-system-glibc getent"><primary sortas="b-getent">getent</primary></indexterm>
|
---|
[c6cb3aa] | 332 | </listitem>
|
---|
| 333 | </varlistentry>
|
---|
[673b0d8] | 334 |
|
---|
[b8a819f] | 335 | <varlistentry id="glibcbug">
|
---|
| 336 | <term><command>glibcbug</command></term>
|
---|
[c6cb3aa] | 337 | <listitem>
|
---|
| 338 | <para>creates a bug report and mails it to the bug email address.</para>
|
---|
[3ed279f] | 339 | <indexterm zone="ch-system-glibc glibcbug"><primary sortas="b-glibcbug">glibcbug</primary></indexterm>
|
---|
[c6cb3aa] | 340 | </listitem>
|
---|
| 341 | </varlistentry>
|
---|
[673b0d8] | 342 |
|
---|
[b8a819f] | 343 | <varlistentry id="iconv">
|
---|
| 344 | <term><command>iconv</command></term>
|
---|
[c6cb3aa] | 345 | <listitem>
|
---|
| 346 | <para>performs character set conversion.</para>
|
---|
[3ed279f] | 347 | <indexterm zone="ch-system-glibc iconv"><primary sortas="b-iconv">iconv</primary></indexterm>
|
---|
[c6cb3aa] | 348 | </listitem>
|
---|
| 349 | </varlistentry>
|
---|
[673b0d8] | 350 |
|
---|
[b8a819f] | 351 | <varlistentry id="iconvconfig">
|
---|
| 352 | <term><command>iconvconfig</command></term>
|
---|
[c6cb3aa] | 353 | <listitem>
|
---|
[ef13657] | 354 | <para>creates fastloading <command>iconv</command> module configuration files.</para>
|
---|
[3ed279f] | 355 | <indexterm zone="ch-system-glibc iconvconfig"><primary sortas="b-iconvconfig">iconvconfig</primary></indexterm>
|
---|
[c6cb3aa] | 356 | </listitem>
|
---|
| 357 | </varlistentry>
|
---|
[673b0d8] | 358 |
|
---|
[b8a819f] | 359 | <varlistentry id="ldconfig">
|
---|
| 360 | <term><command>ldconfig</command></term>
|
---|
[c6cb3aa] | 361 | <listitem>
|
---|
| 362 | <para>configures the dynamic linker runtime bindings.</para>
|
---|
[3ed279f] | 363 | <indexterm zone="ch-system-glibc ldconfig"><primary sortas="b-ldconfig">ldconfig</primary></indexterm>
|
---|
[c6cb3aa] | 364 | </listitem>
|
---|
| 365 | </varlistentry>
|
---|
[673b0d8] | 366 |
|
---|
[b8a819f] | 367 | <varlistentry id="ldd">
|
---|
| 368 | <term><command>ldd</command></term>
|
---|
[c6cb3aa] | 369 | <listitem>
|
---|
| 370 | <para>reports which shared libraries are required
|
---|
[673b0d8] | 371 | by each given program or shared library.</para>
|
---|
[3ed279f] | 372 | <indexterm zone="ch-system-glibc ldd"><primary sortas="b-ldd">ldd</primary></indexterm>
|
---|
[c6cb3aa] | 373 | </listitem>
|
---|
| 374 | </varlistentry>
|
---|
[673b0d8] | 375 |
|
---|
[b8a819f] | 376 | <varlistentry id="lddlibc4">
|
---|
| 377 | <term><command>lddlibc4</command></term>
|
---|
[c6cb3aa] | 378 | <listitem>
|
---|
[bb55064] | 379 | <para>assists <command>ldd</command> with object files.</para>
|
---|
[3ed279f] | 380 | <indexterm zone="ch-system-glibc lddlibc4"><primary sortas="b-lddlibc4">lddlibc4</primary></indexterm>
|
---|
[c6cb3aa] | 381 | </listitem>
|
---|
| 382 | </varlistentry>
|
---|
[673b0d8] | 383 |
|
---|
[b8a819f] | 384 | <varlistentry id="locale">
|
---|
| 385 | <term><command>locale</command></term>
|
---|
[c6cb3aa] | 386 | <listitem>
|
---|
[69993f4] | 387 | <para>tells the compiler to enable or disable the use of POSIX locales
|
---|
| 388 | for built-in operations.</para>
|
---|
[3ed279f] | 389 | <indexterm zone="ch-system-glibc locale"><primary sortas="b-locale">locale</primary></indexterm>
|
---|
[c6cb3aa] | 390 | </listitem>
|
---|
| 391 | </varlistentry>
|
---|
[673b0d8] | 392 |
|
---|
[b8a819f] | 393 | <varlistentry id="localedef">
|
---|
| 394 | <term><command>localedef</command></term>
|
---|
[c6cb3aa] | 395 | <listitem>
|
---|
| 396 | <para>compiles locale specifications.</para>
|
---|
[3ed279f] | 397 | <indexterm zone="ch-system-glibc localedef"><primary sortas="b-localedef">localedef</primary></indexterm>
|
---|
[c6cb3aa] | 398 | </listitem>
|
---|
| 399 | </varlistentry>
|
---|
[673b0d8] | 400 |
|
---|
[b8a819f] | 401 | <varlistentry id="mtrace">
|
---|
| 402 | <term><command>mtrace</command></term>
|
---|
[c6cb3aa] | 403 | <listitem>
|
---|
[69993f4] | 404 | <para>reads and interprets a memory trace file and
|
---|
[ef13657] | 405 | ouputs a summary in human-readable format.</para>
|
---|
[3ed279f] | 406 | <indexterm zone="ch-system-glibc mtrace"><primary sortas="b-mtrace">mtrace</primary></indexterm>
|
---|
[c6cb3aa] | 407 | </listitem>
|
---|
| 408 | </varlistentry>
|
---|
[673b0d8] | 409 |
|
---|
[b8a819f] | 410 | <varlistentry id="nscd">
|
---|
| 411 | <term><command>nscd</command></term>
|
---|
[c6cb3aa] | 412 | <listitem>
|
---|
[ef13657] | 413 | <para>a daemon that provides a cache for the most common name
|
---|
| 414 | service requests.</para>
|
---|
[3ed279f] | 415 | <indexterm zone="ch-system-glibc nscd"><primary sortas="b-nscd">nscd</primary></indexterm>
|
---|
[c6cb3aa] | 416 | </listitem>
|
---|
| 417 | </varlistentry>
|
---|
[673b0d8] | 418 |
|
---|
[b8a819f] | 419 | <varlistentry id="nscd_nischeck">
|
---|
| 420 | <term><command>nscd_nischeck</command></term>
|
---|
[c6cb3aa] | 421 | <listitem>
|
---|
| 422 | <para>checks whether or not secure mode is necessary for NIS+ lookup.</para>
|
---|
[3ed279f] | 423 | <indexterm zone="ch-system-glibc nscd_nischeck"><primary sortas="b-nscd_nischeck">nscd_nischeck</primary></indexterm>
|
---|
[c6cb3aa] | 424 | </listitem>
|
---|
| 425 | </varlistentry>
|
---|
[673b0d8] | 426 |
|
---|
[b8a819f] | 427 | <varlistentry id="pcprofiledump">
|
---|
| 428 | <term><command>pcprofiledump</command></term>
|
---|
[c6cb3aa] | 429 | <listitem>
|
---|
| 430 | <para>dumps information generated by PC profiling.</para>
|
---|
[3ed279f] | 431 | <indexterm zone="ch-system-glibc pcprofiledump"><primary sortas="b-pcprofiledump">pcprofiledump</primary></indexterm>
|
---|
[c6cb3aa] | 432 | </listitem>
|
---|
| 433 | </varlistentry>
|
---|
[673b0d8] | 434 |
|
---|
[b8a819f] | 435 | <varlistentry id="pt_chown">
|
---|
| 436 | <term><command>pt_chown</command></term>
|
---|
[c6cb3aa] | 437 | <listitem>
|
---|
[69993f4] | 438 | <para>a helper program for <command>grantpt</command> to set
|
---|
[673b0d8] | 439 | the owner, group and access permissions of a slave pseudo terminal.</para>
|
---|
[3ed279f] | 440 | <indexterm zone="ch-system-glibc pt_chown"><primary sortas="b-pt_chown">pt_chown</primary></indexterm>
|
---|
[c6cb3aa] | 441 | </listitem>
|
---|
| 442 | </varlistentry>
|
---|
[673b0d8] | 443 |
|
---|
[b8a819f] | 444 | <varlistentry id="rpcgen">
|
---|
| 445 | <term><command>rpcgen</command></term>
|
---|
[c6cb3aa] | 446 | <listitem>
|
---|
[69993f4] | 447 | <para>generates C code to implement the Remote Procecure Call (RPC) protocol.</para>
|
---|
[3ed279f] | 448 | <indexterm zone="ch-system-glibc rpcgen"><primary sortas="b-rpcgen">rpcgen</primary></indexterm>
|
---|
[c6cb3aa] | 449 | </listitem>
|
---|
| 450 | </varlistentry>
|
---|
[673b0d8] | 451 |
|
---|
[b8a819f] | 452 | <varlistentry id="rpcinfo">
|
---|
| 453 | <term><command>rpcinfo</command></term>
|
---|
[c6cb3aa] | 454 | <listitem>
|
---|
| 455 | <para>makes an RPC call to an RPC server.</para>
|
---|
[3ed279f] | 456 | <indexterm zone="ch-system-glibc rpcinfo"><primary sortas="b-rpcinfo">rpcinfo</primary></indexterm>
|
---|
[c6cb3aa] | 457 | </listitem>
|
---|
| 458 | </varlistentry>
|
---|
[673b0d8] | 459 |
|
---|
[b8a819f] | 460 | <varlistentry id="sln">
|
---|
| 461 | <term><command>sln</command></term>
|
---|
[c6cb3aa] | 462 | <listitem>
|
---|
[ef13657] | 463 | <para>a statically linked <command>ln</command> program.</para>
|
---|
[3ed279f] | 464 | <indexterm zone="ch-system-glibc sln"><primary sortas="b-sln">sln</primary></indexterm>
|
---|
[c6cb3aa] | 465 | </listitem>
|
---|
| 466 | </varlistentry>
|
---|
[673b0d8] | 467 |
|
---|
[b8a819f] | 468 | <varlistentry id="sprof">
|
---|
| 469 | <term><command>sprof</command></term>
|
---|
[c6cb3aa] | 470 | <listitem>
|
---|
| 471 | <para>reads and displays shared object profiling data.</para>
|
---|
[3ed279f] | 472 | <indexterm zone="ch-system-glibc sprof"><primary sortas="b-sprof">sprof</primary></indexterm>
|
---|
[c6cb3aa] | 473 | </listitem>
|
---|
| 474 | </varlistentry>
|
---|
[4931dd3] | 475 |
|
---|
[b8a819f] | 476 | <varlistentry id="tzselect">
|
---|
| 477 | <term><command>tzselect</command></term>
|
---|
[c6cb3aa] | 478 | <listitem>
|
---|
| 479 | <para>asks the user about the location of the
|
---|
[673b0d8] | 480 | system and reports the corresponding time zone description.</para>
|
---|
[3ed279f] | 481 | <indexterm zone="ch-system-glibc tzselect"><primary sortas="b-tzselect">tzselect</primary></indexterm>
|
---|
[c6cb3aa] | 482 | </listitem>
|
---|
| 483 | </varlistentry>
|
---|
[673b0d8] | 484 |
|
---|
[b8a819f] | 485 | <varlistentry id="xtrace">
|
---|
| 486 | <term><command>xtrace</command></term>
|
---|
[c6cb3aa] | 487 | <listitem>
|
---|
| 488 | <para>traces the execution of a program by
|
---|
[673b0d8] | 489 | printing the currently executed function.</para>
|
---|
[3ed279f] | 490 | <indexterm zone="ch-system-glibc xtrace"><primary sortas="b-xtrace">xtrace</primary></indexterm>
|
---|
[c6cb3aa] | 491 | </listitem>
|
---|
| 492 | </varlistentry>
|
---|
[673b0d8] | 493 |
|
---|
[b8a819f] | 494 | <varlistentry id="zdump">
|
---|
| 495 | <term><command>zdump</command></term>
|
---|
[c6cb3aa] | 496 | <listitem>
|
---|
[ef13657] | 497 | <para>the time zone dumper.</para>
|
---|
[3ed279f] | 498 | <indexterm zone="ch-system-glibc zdump"><primary sortas="b-zdump">zdump</primary></indexterm>
|
---|
[c6cb3aa] | 499 | </listitem>
|
---|
| 500 | </varlistentry>
|
---|
[673b0d8] | 501 |
|
---|
[b8a819f] | 502 | <varlistentry id="zic">
|
---|
| 503 | <term><command>zic</command></term>
|
---|
[c6cb3aa] | 504 | <listitem>
|
---|
[ef13657] | 505 | <para>the time zone compiler.</para>
|
---|
[3ed279f] | 506 | <indexterm zone="ch-system-glibc zic"><primary sortas="b-zic">zic</primary></indexterm>
|
---|
[c6cb3aa] | 507 | </listitem>
|
---|
| 508 | </varlistentry>
|
---|
[673b0d8] | 509 |
|
---|
[b8a819f] | 510 | <varlistentry id="ld.so">
|
---|
[bb55064] | 511 | <term><filename class="libraryfile">ld.so</filename></term>
|
---|
[c6cb3aa] | 512 | <listitem>
|
---|
[ef13657] | 513 | <para>the helper program for shared library executables.</para>
|
---|
[3ed279f] | 514 | <indexterm zone="ch-system-glibc ld.so"><primary sortas="c-ld.so">ld.so</primary></indexterm>
|
---|
[c6cb3aa] | 515 | </listitem>
|
---|
| 516 | </varlistentry>
|
---|
[673b0d8] | 517 |
|
---|
[b8a819f] | 518 | <varlistentry id="libBrokenLocale">
|
---|
[bb55064] | 519 | <term><filename class="libraryfile">libBrokenLocale</filename></term>
|
---|
[c6cb3aa] | 520 | <listitem>
|
---|
[ef13657] | 521 | <para>used by programs, such as Mozilla, to solve broken locales.</para>
|
---|
[3ed279f] | 522 | <indexterm zone="ch-system-glibc libBrokenLocale"><primary sortas="c-libBrokenLocale">libBrokenLocale</primary></indexterm>
|
---|
[c6cb3aa] | 523 | </listitem>
|
---|
| 524 | </varlistentry>
|
---|
[673b0d8] | 525 |
|
---|
[b8a819f] | 526 | <varlistentry id="libSegFault">
|
---|
[bb55064] | 527 | <term><filename class="libraryfile">libSegFault</filename></term>
|
---|
[c6cb3aa] | 528 | <listitem>
|
---|
[ef13657] | 529 | <para>the segmentation fault signal handler.</para>
|
---|
[3ed279f] | 530 | <indexterm zone="ch-system-glibc libSegFault"><primary sortas="c-libSegFault">libSegFault</primary></indexterm>
|
---|
[c6cb3aa] | 531 | </listitem>
|
---|
| 532 | </varlistentry>
|
---|
[673b0d8] | 533 |
|
---|
[b8a819f] | 534 | <varlistentry id="libanl">
|
---|
[bb55064] | 535 | <term><filename class="libraryfile">libanl</filename></term>
|
---|
[c6cb3aa] | 536 | <listitem>
|
---|
[ef13657] | 537 | <para>an asynchronous name lookup library.</para>
|
---|
[3ed279f] | 538 | <indexterm zone="ch-system-glibc libanl"><primary sortas="c-libanl">libanl</primary></indexterm>
|
---|
[c6cb3aa] | 539 | </listitem>
|
---|
| 540 | </varlistentry>
|
---|
[673b0d8] | 541 |
|
---|
[b8a819f] | 542 | <varlistentry id="libbsd-compat">
|
---|
[bb55064] | 543 | <term><filename class="libraryfile">libbsd-compat</filename></term>
|
---|
[c6cb3aa] | 544 | <listitem>
|
---|
| 545 | <para>provides the portability needed
|
---|
[69993f4] | 546 | in order to run certain Berkey Software Distribution (BSD) programs under Linux.</para>
|
---|
[3ed279f] | 547 | <indexterm zone="ch-system-glibc libbsd-compat"><primary sortas="c-libbsd-compat">libbsd-compat</primary></indexterm>
|
---|
[c6cb3aa] | 548 | </listitem>
|
---|
| 549 | </varlistentry>
|
---|
[673b0d8] | 550 |
|
---|
[b8a819f] | 551 | <varlistentry id="libc">
|
---|
[bb55064] | 552 | <term><filename class="libraryfile">libc</filename></term>
|
---|
[c6cb3aa] | 553 | <listitem>
|
---|
[ef13657] | 554 | <para>the main C library.</para>
|
---|
[3ed279f] | 555 | <indexterm zone="ch-system-glibc libc"><primary sortas="c-libc">libc</primary></indexterm>
|
---|
[c6cb3aa] | 556 | </listitem>
|
---|
| 557 | </varlistentry>
|
---|
[673b0d8] | 558 |
|
---|
[b8a819f] | 559 | <varlistentry id="libcrypt">
|
---|
[bb55064] | 560 | <term><filename class="libraryfile">libcrypt</filename></term>
|
---|
[c6cb3aa] | 561 | <listitem>
|
---|
[ef13657] | 562 | <para>the cryptography library.</para>
|
---|
[3ed279f] | 563 | <indexterm zone="ch-system-glibc libcrypt"><primary sortas="c-libcrypt">libcrypt</primary></indexterm>
|
---|
[c6cb3aa] | 564 | </listitem>
|
---|
| 565 | </varlistentry>
|
---|
[673b0d8] | 566 |
|
---|
[b8a819f] | 567 | <varlistentry id="libdl">
|
---|
[bb55064] | 568 | <term><filename class="libraryfile">libdl</filename></term>
|
---|
[c6cb3aa] | 569 | <listitem>
|
---|
[ef13657] | 570 | <para>the dynamic linking interface library.</para>
|
---|
[3ed279f] | 571 | <indexterm zone="ch-system-glibc libdl"><primary sortas="c-libdl">libdl</primary></indexterm>
|
---|
[c6cb3aa] | 572 | </listitem>
|
---|
| 573 | </varlistentry>
|
---|
[673b0d8] | 574 |
|
---|
[b8a819f] | 575 | <varlistentry id="libg">
|
---|
[bb55064] | 576 | <term><filename class="libraryfile">libg</filename></term>
|
---|
[c6cb3aa] | 577 | <listitem>
|
---|
[ef13657] | 578 | <para>a runtime library for <command>g++</command>.</para>
|
---|
[3ed279f] | 579 | <indexterm zone="ch-system-glibc libg"><primary sortas="c-libg">libg</primary></indexterm>
|
---|
[c6cb3aa] | 580 | </listitem>
|
---|
| 581 | </varlistentry>
|
---|
[673b0d8] | 582 |
|
---|
[b8a819f] | 583 | <varlistentry id="libieee">
|
---|
[bb55064] | 584 | <term><filename class="libraryfile">libieee</filename></term>
|
---|
[c6cb3aa] | 585 | <listitem>
|
---|
[ef13657] | 586 | <para>the Institute of Electrical and Electronic Engineers (IEEE) floating point library.</para>
|
---|
[3ed279f] | 587 | <indexterm zone="ch-system-glibc libieee"><primary sortas="c-libieee">libieee</primary></indexterm>
|
---|
[c6cb3aa] | 588 | </listitem>
|
---|
| 589 | </varlistentry>
|
---|
[673b0d8] | 590 |
|
---|
[b8a819f] | 591 | <varlistentry id="libm">
|
---|
[bb55064] | 592 | <term><filename class="libraryfile">libm</filename></term>
|
---|
[c6cb3aa] | 593 | <listitem>
|
---|
[ef13657] | 594 | <para>the mathematical library.</para>
|
---|
[3ed279f] | 595 | <indexterm zone="ch-system-glibc libm"><primary sortas="c-libm">libm</primary></indexterm>
|
---|
[c6cb3aa] | 596 | </listitem>
|
---|
| 597 | </varlistentry>
|
---|
[673b0d8] | 598 |
|
---|
[b8a819f] | 599 | <varlistentry id="libmcheck">
|
---|
[bb55064] | 600 | <term><filename class="libraryfile">libmcheck</filename></term>
|
---|
[c6cb3aa] | 601 | <listitem>
|
---|
| 602 | <para>contains code run at boot.</para>
|
---|
[3ed279f] | 603 | <indexterm zone="ch-system-glibc libmcheck"><primary sortas="c-libmcheck">libmcheck</primary></indexterm>
|
---|
[c6cb3aa] | 604 | </listitem>
|
---|
| 605 | </varlistentry>
|
---|
[673b0d8] | 606 |
|
---|
[b8a819f] | 607 | <varlistentry id="libmemusage">
|
---|
[bb55064] | 608 | <term><filename class="libraryfile">libmemusage</filename></term>
|
---|
[c6cb3aa] | 609 | <listitem>
|
---|
[ef13657] | 610 | <para>used by <command>memusage</command> to help collect
|
---|
[673b0d8] | 611 | information about the memory usage of a program.</para>
|
---|
[3ed279f] | 612 | <indexterm zone="ch-system-glibc libmemusage"><primary sortas="c-libmemusage">libmemusage</primary></indexterm>
|
---|
[c6cb3aa] | 613 | </listitem>
|
---|
| 614 | </varlistentry>
|
---|
[673b0d8] | 615 |
|
---|
[b8a819f] | 616 | <varlistentry id="libnsl">
|
---|
[bb55064] | 617 | <term><filename class="libraryfile">libnsl</filename></term>
|
---|
[c6cb3aa] | 618 | <listitem>
|
---|
[ef13657] | 619 | <para>the network services library.</para>
|
---|
[3ed279f] | 620 | <indexterm zone="ch-system-glibc libnsl"><primary sortas="c-libnsl">libnsl</primary></indexterm>
|
---|
[c6cb3aa] | 621 | </listitem>
|
---|
| 622 | </varlistentry>
|
---|
[673b0d8] | 623 |
|
---|
[b8a819f] | 624 | <varlistentry id="libnss">
|
---|
[bb55064] | 625 | <term><filename class="libraryfile">libnss*</filename></term>
|
---|
[c6cb3aa] | 626 | <listitem>
|
---|
[ef13657] | 627 | <para>the Name Service Switch libraries,
|
---|
[673b0d8] | 628 | containing functions for resolving host names, user names, group names,
|
---|
[ef13657] | 629 | aliases, services, protocols, etc.</para>
|
---|
[3ed279f] | 630 | <indexterm zone="ch-system-glibc libnss"><primary sortas="c-libnss*">libnss*</primary></indexterm>
|
---|
[c6cb3aa] | 631 | </listitem>
|
---|
| 632 | </varlistentry>
|
---|
[673b0d8] | 633 |
|
---|
[b8a819f] | 634 | <varlistentry id="libpcprofile">
|
---|
[bb55064] | 635 | <term><filename class="libraryfile">libpcprofile</filename></term>
|
---|
[c6cb3aa] | 636 | <listitem>
|
---|
| 637 | <para>contains profiling functions used
|
---|
[69993f4] | 638 | to track the amount of CPU time spent in specific source code lines.</para>
|
---|
[3ed279f] | 639 | <indexterm zone="ch-system-glibc libpcprofile"><primary sortas="c-libpcprofile">libpcprofile</primary></indexterm>
|
---|
[c6cb3aa] | 640 | </listitem>
|
---|
| 641 | </varlistentry>
|
---|
[673b0d8] | 642 |
|
---|
[b8a819f] | 643 | <varlistentry id="libpthread">
|
---|
[bb55064] | 644 | <term><filename class="libraryfile">libpthread</filename></term>
|
---|
[c6cb3aa] | 645 | <listitem>
|
---|
[69993f4] | 646 | <para>the POSIX threads library.</para>
|
---|
[3ed279f] | 647 | <indexterm zone="ch-system-glibc libpthread"><primary sortas="c-libpthread">libpthread</primary></indexterm>
|
---|
[c6cb3aa] | 648 | </listitem>
|
---|
| 649 | </varlistentry>
|
---|
[673b0d8] | 650 |
|
---|
[b8a819f] | 651 | <varlistentry id="libresolv">
|
---|
[bb55064] | 652 | <term><filename class="libraryfile">libresolv</filename></term>
|
---|
[c6cb3aa] | 653 | <listitem>
|
---|
| 654 | <para>contains functions for creating,
|
---|
[673b0d8] | 655 | sending, and interpreting packets to the Internet domain name servers.</para>
|
---|
[3ed279f] | 656 | <indexterm zone="ch-system-glibc libresolv"><primary sortas="c-libresolv">libresolv</primary></indexterm>
|
---|
[c6cb3aa] | 657 | </listitem>
|
---|
| 658 | </varlistentry>
|
---|
[673b0d8] | 659 |
|
---|
[b8a819f] | 660 | <varlistentry id="librpcsvc">
|
---|
[bb55064] | 661 | <term><filename class="libraryfile">librpcsvc</filename></term>
|
---|
[c6cb3aa] | 662 | <listitem>
|
---|
| 663 | <para>contains functions providing miscellaneous RPC services.</para>
|
---|
[3ed279f] | 664 | <indexterm zone="ch-system-glibc librpcsvc"><primary sortas="c-librpcsvc">librpcsvc</primary></indexterm>
|
---|
[c6cb3aa] | 665 | </listitem>
|
---|
| 666 | </varlistentry>
|
---|
[673b0d8] | 667 |
|
---|
[b8a819f] | 668 | <varlistentry id="librt">
|
---|
[bb55064] | 669 | <term><filename class="libraryfile">librt</filename></term>
|
---|
[c6cb3aa] | 670 | <listitem>
|
---|
| 671 | <para>contains functions providing most of the
|
---|
[673b0d8] | 672 | interfaces specified by the POSIX.1b Realtime Extension.</para>
|
---|
[3ed279f] | 673 | <indexterm zone="ch-system-glibc librt"><primary sortas="c-librt">librt</primary></indexterm>
|
---|
[c6cb3aa] | 674 | </listitem>
|
---|
| 675 | </varlistentry>
|
---|
[673b0d8] | 676 |
|
---|
[b8a819f] | 677 | <varlistentry id="libthread_db">
|
---|
[bb55064] | 678 | <term><filename class="libraryfile">libthread_db</filename></term>
|
---|
[c6cb3aa] | 679 | <listitem>
|
---|
| 680 | <para>contains functions useful for
|
---|
[673b0d8] | 681 | building debuggers for multi-threaded programs.</para>
|
---|
[3ed279f] | 682 | <indexterm zone="ch-system-glibc libthread_db"><primary sortas="c-libthread_db">libthread_db</primary></indexterm>
|
---|
[c6cb3aa] | 683 | </listitem>
|
---|
| 684 | </varlistentry>
|
---|
[673b0d8] | 685 |
|
---|
[b8a819f] | 686 | <varlistentry id="libutil">
|
---|
[bb55064] | 687 | <term><filename class="libraryfile">libutil</filename></term>
|
---|
[c6cb3aa] | 688 | <listitem>
|
---|
[bb55064] | 689 | <para>contains code for <quote>standard</quote> functions used in many different Unix utilities.</para>
|
---|
[3ed279f] | 690 | <indexterm zone="ch-system-glibc libutil"><primary sortas="c-libutil">libutil</primary></indexterm>
|
---|
[c6cb3aa] | 691 | </listitem>
|
---|
| 692 | </varlistentry>
|
---|
| 693 | </variablelist>
|
---|
[673b0d8] | 694 |
|
---|
| 695 | </sect2>
|
---|
| 696 |
|
---|
| 697 | </sect1>
|
---|
[ef13657] | 698 |
|
---|