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