[bf8c11f] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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| 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
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| 3 | "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
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| 4 | <!ENTITY % general-entities SYSTEM "../../general.ent">
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| 5 | <!ENTITY % patches-entities SYSTEM "../../patches.ent">
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| 6 | %general-entities;
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| 7 | %patches-entities;
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| 8 | ]>
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| 9 |
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| 10 | <sect1 id="ch-system-glibc" role="wrap">
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| 11 | <?dbhtml filename="glibc.html"?>
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| 12 |
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| 13 | <title>Glibc-&glibc-version;</title>
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| 14 |
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| 15 | <indexterm zone="ch-system-glibc">
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| 16 | <primary sortas="a-Glibc">Glibc</primary>
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| 17 | </indexterm>
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| 18 |
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| 19 | <sect2 role="package">
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| 20 | <title/>
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| 21 |
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| 22 | <para>The Glibc package contains the main C library. This library provides
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| 23 | the basic routines for allocating memory, searching directories, opening and
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| 24 | closing files, reading and writing files, string handling, pattern matching,
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| 25 | arithmetic, and so on.</para>
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| 26 |
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| 27 | <segmentedlist>
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| 28 | <segtitle>&buildtime;</segtitle>
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| 29 | <segtitle>&diskspace;</segtitle>
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| 30 |
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| 31 | <seglistitem>
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| 32 | <seg>Not checked yet</seg>
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| 33 | <seg>Not checked yet</seg>
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| 34 | </seglistitem>
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| 35 | </segmentedlist>
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| 36 |
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| 37 | <segmentedlist>
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| 38 | <segtitle>&dependencies;</segtitle>
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| 39 |
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| 40 | <seglistitem>
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| 41 | <seg>Bash, Binutils, Coreutils, Diffutils, Gawk, GCC, Gettext,
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| 42 | Grep, Make, Perl, Sed, and Texinfo</seg>
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| 43 | </seglistitem>
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| 44 | </segmentedlist>
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| 45 |
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| 46 | </sect2>
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| 47 |
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| 48 | <sect2 role="installation">
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| 49 | <title>Installation of Glibc</title>
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| 50 |
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| 51 | <note os="z">
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| 52 | <para>Some packages outside of LFS suggest installing GNU libiconv in
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| 53 | order to translate data from one encoding to another. The project's
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| 54 | home page (<ulink url="http://www.gnu.org/software/libiconv/"/>) says
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| 55 | <quote>This library provides an <function>iconv()</function>
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| 56 | implementation, for use on systems which don't have one, or whose
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| 57 | implementation cannot convert from/to Unicode.</quote> Glibc provides
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| 58 | an <function>iconv()</function> implementation and can convert from/to
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| 59 | Unicode, therefore libiconv is not required on an LFS system.</para>
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| 60 | </note>
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| 61 |
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| 62 | <para os="a">This package is known to behave badly when you change its default
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| 63 | optimization flags (including the <option>-march</option> and
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| 64 | <option>-mcpu</option> options). Therefore, if you have defined any
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| 65 | environment variables that override default optimizations, such as CFLAGS
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| 66 | and CXXFLAGS, we recommend un-setting them when building Glibc.</para>
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| 67 |
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| 68 | <para os="b">The Glibc build system is self-contained and will install
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| 69 | perfectly, even though the compiler specs file and linker are still
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| 70 | pointing at <filename class="directory">/tools</filename>. The specs
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| 71 | and linker cannot be adjusted before the Glibc install because the
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| 72 | Glibc autoconf tests would give false results and defeat the goal
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| 73 | of achieving a clean build.</para>
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| 74 |
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| 75 | <para os="c">The following patch removed the potential of localdef
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| 76 | segfaulting:</para>
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| 77 |
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| 78 | <screen os="d"><userinput>patch -Np1 -i ../&glibc-localedef_segfault-patch;</userinput></screen>
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| 79 |
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| 80 | <para os="e">The Glibc documentation recommends building Glibc outside of the
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| 81 | source directory in a dedicated build directory:</para>
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| 82 |
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| 83 | <screen os="f"><userinput>mkdir ../glibc-build
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| 84 | cd ../glibc-build</userinput></screen>
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| 85 |
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| 86 | <para os="g">Prepare Glibc for compilation:</para>
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| 87 |
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| 88 | <screen os="h"><userinput>../glibc-&glibc-version;/configure --prefix=/usr \
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| 89 | --disable-profile --enable-add-ons --enable-kernel=2.6.0 \
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| 90 | --libexecdir=/usr/lib/glibc</userinput></screen>
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| 91 |
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| 92 | <variablelist os="i">
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| 93 | <title>The meaning of the new configure option:</title>
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| 94 |
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| 95 | <varlistentry>
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| 96 | <term><parameter>--libexecdir=/usr/lib/glibc</parameter></term>
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| 97 | <listitem>
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| 98 | <para>This changes the location of the <command>pt_chown</command>
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| 99 | program from its default of <filename
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| 100 | class="directory">/usr/libexec</filename> to <filename
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| 101 | class="directory">/usr/lib/glibc</filename>.</para>
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| 102 | </listitem>
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| 103 | </varlistentry>
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| 104 | </variablelist>
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| 105 |
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| 106 | <para os="j">Compile the package:</para>
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| 107 |
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| 108 | <screen os="k"><userinput>make</userinput></screen>
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| 109 |
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| 110 | <important os="l">
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| 111 | <para>In this section, the test suite for Glibc is considered critical.
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| 112 | Do not skip it under any circumstance.</para>
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| 113 | </important>
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| 114 |
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| 115 | <para os="m">Test the results:</para>
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| 116 |
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| 117 | <!-- items n,o,p no longer the master, use x86_64 which has no failures -->
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| 118 |
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| 119 | <screen os="n"><userinput>make -k check >glibc-check-log 2>&1 ; grep Error glibc-check-log</userinput></screen>
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| 120 |
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| 121 | <para os="o">The Glibc test suite is highly dependent on certain functions of
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| 122 | the host system, in particular the kernel. In general, the Glibc test
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| 123 | suite is always expected to pass. However, in certain circumstances,
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| 124 | some failures are unavoidable. This is a list of the most common
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| 125 | issues:</para>
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| 126 |
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| 127 | <itemizedlist os="p">
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| 128 | <listitem>
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| 129 | <para>The <emphasis>math</emphasis> tests, at least on i686, fail in
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| 130 | the <emphasis>test-double</emphasis> and <emphasis>test-idouble</emphasis>
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| 131 | tests with gcc-&gcc-version;, the <command>grep</command> command will
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| 132 | also report an expected (ignored) failure in <emphasis>posix/annexc
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| 133 | </emphasis>. These two failures in the math tests appear to be harmless.
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| 134 | The math tests may also fail
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| 135 | on systems where the CPU is not a relatively new genuine Intel or
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| 136 | authentic AMD. Certain optimization settings are also known to be a
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| 137 | factor here.</para>
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| 138 | </listitem>
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| 139 | <listitem>
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| 140 | <para>The <emphasis>gettext</emphasis> test sometimes fails due to
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| 141 | host system issues. The exact reasons are not yet clear.</para>
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| 142 | </listitem>
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| 143 | <listitem>
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| 144 | <para>If you have mounted the LFS partition with the
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| 145 | <parameter>noatime</parameter> option, the <emphasis>atime</emphasis> test
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| 146 | will fail. As mentioned in <xref linkend="ch-partitioning-mounting"/>,
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| 147 | do not use the <parameter>noatime</parameter> option while building
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| 148 | LFS.</para>
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| 149 | </listitem>
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| 150 | <listitem>
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| 151 | <para>When running on older and slower hardware, some tests
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| 152 | can fail because of test timeouts being exceeded.</para>
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| 153 | </listitem>
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| 154 | </itemizedlist>
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| 155 |
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| 156 | <para os="q">Though it is a harmless message, the install stage of Glibc will
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| 157 | complain about the absence of <filename>/etc/ld.so.conf</filename>.
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| 158 | Prevent this warning with:</para>
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| 159 |
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| 160 | <screen os="r"><userinput>touch /etc/ld.so.conf</userinput></screen>
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| 161 |
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| 162 | <para os="s">Install the package:</para>
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| 163 |
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| 164 | <screen os="t"><userinput>make install</userinput></screen>
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| 165 |
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| 166 | </sect2>
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| 167 |
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| 168 | <sect2 id="i18n-glibc" role="configuration">
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| 169 | <title>Internationalization</title>
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| 170 |
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| 171 | <para>The locales that can make the system respond in a different
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| 172 | language were not installed by the above command. Install this
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| 173 | with:</para>
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| 174 |
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| 175 | <screen><userinput>make localedata/install-locales</userinput></screen>
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| 176 |
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| 177 | <para>To save time, an alternative to running the previous command (which
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| 178 | generates and installs every locale Glibc is aware of) is to install only
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| 179 | those locales that are wanted and needed. This can be achieved by using
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| 180 | the <command>localedef</command> command. Information on this command is
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| 181 | located in the <filename>INSTALL</filename> file in the Glibc source.
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| 182 | However, there are a number of locales that are essential in order for the
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| 183 | tests of future packages to pass, in particular, the
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| 184 | <emphasis>libstdc++</emphasis> tests from GCC. The following instructions,
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| 185 | instead of the <parameter>install-locales</parameter> target used above,
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| 186 | will install the minimum set of locales necessary for the tests to run
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| 187 | successfully:</para>
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| 188 |
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| 189 | <screen><userinput>mkdir -p /usr/lib/locale
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| 190 | localedef -i de_DE -f ISO-8859-1 de_DE
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| 191 | localedef -i de_DE@euro -f ISO-8859-15 de_DE@euro
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| 192 | localedef -i en_HK -f ISO-8859-1 en_HK
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| 193 | localedef -i en_PH -f ISO-8859-1 en_PH
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| 194 | localedef -i en_US -f ISO-8859-1 en_US
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| 195 | localedef -i es_MX -f ISO-8859-1 es_MX
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| 196 | localedef -i fa_IR -f UTF-8 fa_IR
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| 197 | localedef -i fr_FR -f ISO-8859-1 fr_FR
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| 198 | localedef -i fr_FR@euro -f ISO-8859-15 fr_FR@euro
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| 199 | localedef -i it_IT -f ISO-8859-1 it_IT
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| 200 | localedef -i ja_JP -f EUC-JP ja_JP</userinput></screen>
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| 201 |
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| 202 | <para>Some locales installed by the <command>make
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| 203 | localedata/install-locales</command> command above are not properly
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| 204 | supported by some applications that are in the LFS and BLFS books. Because
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| 205 | of the various problems that arise due to application programmers making
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| 206 | assumptions that break in such locales, LFS should not be used in locales
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| 207 | that utilize multibyte character sets (including UTF-8) or right-to-left
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| 208 | writing order. Numerous unofficial and unstable patches are required to
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| 209 | fix these problems, and it has been decided by the LFS developers not to
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| 210 | support such complex locales. This applies to the ja_JP and fa_IR locales
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| 211 | as well—they have been installed only for GCC and Gettext tests to
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| 212 | pass, and the <command>watch</command> program (part of the Procps package)
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| 213 | does not work properly in them. Various attempts to circumvent these
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| 214 | restrictions are documented in internationalization-related hints.</para>
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| 215 |
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| 216 | </sect2>
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| 217 |
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| 218 | <sect2 id="conf-glibc" role="configuration">
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| 219 | <title>Configuring Glibc</title>
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| 220 |
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| 221 | <indexterm zone="conf-glibc">
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| 222 | <primary sortas="e-/etc/nsswitch.conf">/etc/nsswitch.conf</primary>
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| 223 | </indexterm>
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| 224 |
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| 225 | <indexterm zone="conf-glibc">
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| 226 | <primary sortas="e-/etc/localtime">/etc/localtime</primary>
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| 227 | </indexterm>
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| 228 |
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| 229 | <para>The <filename>/etc/nsswitch.conf</filename> file needs to be created
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| 230 | because, although Glibc provides defaults when this file is missing or
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| 231 | corrupt, the Glibc defaults do not work well in a networked environment.
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| 232 | The time zone also needs to be configured.</para>
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| 233 |
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| 234 | <para>Create a new file <filename>/etc/nsswitch.conf</filename> by running
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| 235 | the following:</para>
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| 236 |
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| 237 | <screen><userinput>cat > /etc/nsswitch.conf << "EOF"
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| 238 | <literal># Begin /etc/nsswitch.conf
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| 239 |
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| 240 | passwd: files
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| 241 | group: files
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| 242 | shadow: files
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| 243 |
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| 244 | hosts: files dns
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| 245 | networks: files
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| 246 |
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| 247 | protocols: files
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| 248 | services: files
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| 249 | ethers: files
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| 250 | rpc: files
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| 251 |
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| 252 | # End /etc/nsswitch.conf</literal>
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| 253 | EOF</userinput></screen>
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| 254 |
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| 255 | <para>To determine the local time zone, run the following script:</para>
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| 256 |
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| 257 | <screen><userinput>tzselect</userinput></screen>
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| 258 |
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| 259 | <para>After answering a few questions about the location, the script will
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| 260 | output the name of the time zone (e.g., <emphasis>EST5EDT</emphasis> or
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| 261 | <emphasis>Canada/Eastern</emphasis>). Then create the
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| 262 | <filename>/etc/localtime</filename> file by running:</para>
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| 263 |
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| 264 | <screen><userinput>cp --remove-destination /usr/share/zoneinfo/<replaceable>[xxx]</replaceable> \
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| 265 | /etc/localtime</userinput></screen>
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| 266 |
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| 267 | <para>Replace <replaceable>[xxx]</replaceable> with the name of the time zone
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| 268 | that <command>tzselect</command> provided (e.g., Canada/Eastern).</para>
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| 269 |
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| 270 | <variablelist>
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| 271 | <title>The meaning of the cp option:</title>
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| 272 |
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| 273 | <varlistentry>
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| 274 | <term><parameter>--remove-destination</parameter></term>
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| 275 | <listitem>
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| 276 | <para>This is needed to force removal of the already existing symbolic
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| 277 | link. The reason for copying the file instead of using a symlink is to
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| 278 | cover the situation where <filename class="directory">/usr</filename>
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| 279 | is on a separate partition. This could be important when booted into
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| 280 | single user mode.</para>
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| 281 | </listitem>
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| 282 | </varlistentry>
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| 283 | </variablelist>
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| 284 |
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| 285 | </sect2>
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| 286 |
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| 287 | <sect2 id="conf-ld" role="configuration">
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| 288 | <title>Configuring Dynamic Loader</title>
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| 289 |
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| 290 | <indexterm zone="conf-ld">
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| 291 | <primary sortas="e-/etc/ld.so.conf">/etc/ld.so.conf</primary>
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| 292 | </indexterm>
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| 293 |
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| 294 | <para>By default, the dynamic loader (<filename
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| 295 | class="libraryfile">/lib/ld-linux.so.2</filename>) searches through
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| 296 | <filename class="directory">/lib</filename> and <filename
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| 297 | class="directory">/usr/lib</filename> for dynamic libraries that are
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| 298 | needed by programs as they are run. However, if there are libraries in
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| 299 | directories other than <filename class="directory">/lib</filename> and
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| 300 | <filename class="directory">/usr/lib</filename>, these need to be
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| 301 | added to the <filename>/etc/ld.so.conf</filename> file in order
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| 302 | for the dynamic loader to find them. Two directories that are commonly
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| 303 | known to contain additional libraries are <filename
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| 304 | class="directory">/usr/local/lib</filename> and <filename
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| 305 | class="directory">/opt/lib</filename>, so add those directories to the
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| 306 | dynamic loader's search path.</para>
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| 307 |
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| 308 | <para>Create a new file <filename>/etc/ld.so.conf</filename> by running the
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| 309 | following:</para>
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| 310 |
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| 311 | <screen><userinput>cat > /etc/ld.so.conf << "EOF"
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| 312 | <literal># Begin /etc/ld.so.conf
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| 313 |
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| 314 | /usr/local/lib
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| 315 | /opt/lib
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| 316 |
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| 317 | # End /etc/ld.so.conf</literal>
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| 318 | EOF</userinput></screen>
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| 319 |
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| 320 | </sect2>
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| 321 |
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| 322 | <sect2 id="contents-glibc" role="content">
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| 323 | <title>Contents of Glibc</title>
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| 324 |
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| 325 | <segmentedlist>
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| 326 | <segtitle>Installed programs</segtitle>
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| 327 | <segtitle>Installed libraries</segtitle>
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| 328 |
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| 329 | <seglistitem>
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| 330 | <seg>catchsegv, gencat, getconf, getent, iconv, iconvconfig, ldconfig,
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| 331 | ldd, lddlibc4, locale, localedef, mtrace, nscd, nscd_nischeck,
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| 332 | pcprofiledump, pt_chown, rpcgen, rpcinfo, sln, sprof, tzselect, xtrace,
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| 333 | zdump, and zic</seg>
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| 334 | <seg>ld.so, libBrokenLocale.[a,so], libSegFault.so, libanl.[a,so],
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| 335 | libbsd-compat.a, libc.[a,so], libcrypt.[a,so], libdl.[a,so], libg.a,
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| 336 | libieee.a, libm.[a,so], libmcheck.a, libmemusage.so, libnsl.a,
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| 337 | libnss_compat.so, libnss_dns.so, libnss_files.so, libnss_hesiod.so,
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| 338 | libnss_nis.so, libnss_nisplus.so, libpcprofile.so, libpthread.[a,so],
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| 339 | libresolv.[a,so], librpcsvc.a, librt.[a,so], libthread_db.so, and
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| 340 | libutil.[a,so]</seg>
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| 341 | </seglistitem>
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| 342 | </segmentedlist>
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| 343 |
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| 344 | <variablelist>
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| 345 | <bridgehead renderas="sect3">Short Descriptions</bridgehead>
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| 346 | <?dbfo list-presentation="list"?>
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| 347 | <?dbhtml list-presentation="table"?>
|
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| 348 |
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| 349 | <varlistentry id="catchsegv">
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| 350 | <term><command>catchsegv</command></term>
|
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| 351 | <listitem>
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| 352 | <para>Can be used to create a stack trace when a program
|
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| 353 | terminates with a segmentation fault</para>
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| 354 | <indexterm zone="ch-system-glibc catchsegv">
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| 355 | <primary sortas="b-catchsegv">catchsegv</primary>
|
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| 356 | </indexterm>
|
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| 357 | </listitem>
|
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| 358 | </varlistentry>
|
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| 359 |
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| 360 | <varlistentry id="gencat">
|
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| 361 | <term><command>gencat</command></term>
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| 362 | <listitem>
|
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| 363 | <para>Generates message catalogues</para>
|
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| 364 | <indexterm zone="ch-system-glibc gencat">
|
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| 365 | <primary sortas="b-gencat">gencat</primary>
|
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| 366 | </indexterm>
|
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| 367 | </listitem>
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| 368 | </varlistentry>
|
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| 369 |
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| 370 | <varlistentry id="getconf">
|
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| 371 | <term><command>getconf</command></term>
|
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| 372 | <listitem>
|
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| 373 | <para>Displays the system configuration values for file system specific
|
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| 374 | variables</para>
|
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| 375 | <indexterm zone="ch-system-glibc getconf">
|
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| 376 | <primary sortas="b-getconf">getconf</primary>
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| 377 | </indexterm>
|
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| 378 | </listitem>
|
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| 379 | </varlistentry>
|
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| 380 |
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| 381 | <varlistentry id="getent">
|
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| 382 | <term><command>getent</command></term>
|
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| 383 | <listitem>
|
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| 384 | <para>Gets entries from an administrative database</para>
|
---|
| 385 | <indexterm zone="ch-system-glibc getent">
|
---|
| 386 | <primary sortas="b-getent">getent</primary>
|
---|
| 387 | </indexterm>
|
---|
| 388 | </listitem>
|
---|
| 389 | </varlistentry>
|
---|
| 390 |
|
---|
| 391 | <varlistentry id="iconv">
|
---|
| 392 | <term><command>iconv</command></term>
|
---|
| 393 | <listitem>
|
---|
| 394 | <para>Performs character set conversion</para>
|
---|
| 395 | <indexterm zone="ch-system-glibc iconv">
|
---|
| 396 | <primary sortas="b-iconv">iconv</primary>
|
---|
| 397 | </indexterm>
|
---|
| 398 | </listitem>
|
---|
| 399 | </varlistentry>
|
---|
| 400 |
|
---|
| 401 | <varlistentry id="iconvconfig">
|
---|
| 402 | <term><command>iconvconfig</command></term>
|
---|
| 403 | <listitem>
|
---|
| 404 | <para>Creates fastloading <command>iconv</command> module configuration
|
---|
| 405 | files</para>
|
---|
| 406 | <indexterm zone="ch-system-glibc iconvconfig">
|
---|
| 407 | <primary sortas="b-iconvconfig">iconvconfig</primary>
|
---|
| 408 | </indexterm>
|
---|
| 409 | </listitem>
|
---|
| 410 | </varlistentry>
|
---|
| 411 |
|
---|
| 412 | <varlistentry id="ldconfig">
|
---|
| 413 | <term><command>ldconfig</command></term>
|
---|
| 414 | <listitem>
|
---|
| 415 | <para>Configures the dynamic linker runtime bindings</para>
|
---|
| 416 | <indexterm zone="ch-system-glibc ldconfig">
|
---|
| 417 | <primary sortas="b-ldconfig">ldconfig</primary>
|
---|
| 418 | </indexterm>
|
---|
| 419 | </listitem>
|
---|
| 420 | </varlistentry>
|
---|
| 421 |
|
---|
| 422 | <varlistentry id="ldd">
|
---|
| 423 | <term><command>ldd</command></term>
|
---|
| 424 | <listitem>
|
---|
| 425 | <para>Reports which shared libraries are required
|
---|
| 426 | by each given program or shared library</para>
|
---|
| 427 | <indexterm zone="ch-system-glibc ldd">
|
---|
| 428 | <primary sortas="b-ldd">ldd</primary>
|
---|
| 429 | </indexterm>
|
---|
| 430 | </listitem>
|
---|
| 431 | </varlistentry>
|
---|
| 432 |
|
---|
| 433 | <varlistentry id="lddlibc4">
|
---|
| 434 | <term><command>lddlibc4</command></term>
|
---|
| 435 | <listitem>
|
---|
| 436 | <para>Assists <command>ldd</command> with object files</para>
|
---|
| 437 | <indexterm zone="ch-system-glibc lddlibc4">
|
---|
| 438 | <primary sortas="b-lddlibc4">lddlibc4</primary>
|
---|
| 439 | </indexterm>
|
---|
| 440 | </listitem>
|
---|
| 441 | </varlistentry>
|
---|
| 442 |
|
---|
| 443 | <varlistentry id="locale">
|
---|
| 444 | <term><command>locale</command></term>
|
---|
| 445 | <listitem>
|
---|
| 446 | <para>Tells the compiler to enable or disable the use of POSIX locales
|
---|
| 447 | for built-in operations</para>
|
---|
| 448 | <indexterm zone="ch-system-glibc locale">
|
---|
| 449 | <primary sortas="b-locale">locale</primary>
|
---|
| 450 | </indexterm>
|
---|
| 451 | </listitem>
|
---|
| 452 | </varlistentry>
|
---|
| 453 |
|
---|
| 454 | <varlistentry id="localedef">
|
---|
| 455 | <term><command>localedef</command></term>
|
---|
| 456 | <listitem>
|
---|
| 457 | <para>Compiles locale specifications</para>
|
---|
| 458 | <indexterm zone="ch-system-glibc localedef">
|
---|
| 459 | <primary sortas="b-localedef">localedef</primary>
|
---|
| 460 | </indexterm>
|
---|
| 461 | </listitem>
|
---|
| 462 | </varlistentry>
|
---|
| 463 |
|
---|
| 464 | <varlistentry id="mtrace">
|
---|
| 465 | <term><command>mtrace</command></term>
|
---|
| 466 | <listitem>
|
---|
| 467 | <para>Reads and interprets a memory trace file and
|
---|
| 468 | displays a summary in human-readable format</para>
|
---|
| 469 | <indexterm zone="ch-system-glibc mtrace">
|
---|
| 470 | <primary sortas="b-mtrace">mtrace</primary>
|
---|
| 471 | </indexterm>
|
---|
| 472 | </listitem>
|
---|
| 473 | </varlistentry>
|
---|
| 474 |
|
---|
| 475 | <varlistentry id="nscd">
|
---|
| 476 | <term><command>nscd</command></term>
|
---|
| 477 | <listitem>
|
---|
| 478 | <para>A daemon that provides a cache for the most common name
|
---|
| 479 | service requests</para>
|
---|
| 480 | <indexterm zone="ch-system-glibc nscd">
|
---|
| 481 | <primary sortas="b-nscd">nscd</primary>
|
---|
| 482 | </indexterm>
|
---|
| 483 | </listitem>
|
---|
| 484 | </varlistentry>
|
---|
| 485 |
|
---|
| 486 | <varlistentry id="nscd_nischeck">
|
---|
| 487 | <term><command>nscd_nischeck</command></term>
|
---|
| 488 | <listitem>
|
---|
| 489 | <para>Checks whether or not secure mode is necessary for NIS+
|
---|
| 490 | lookup</para>
|
---|
| 491 | <indexterm zone="ch-system-glibc nscd_nischeck">
|
---|
| 492 | <primary sortas="b-nscd_nischeck">nscd_nischeck</primary>
|
---|
| 493 | </indexterm>
|
---|
| 494 | </listitem>
|
---|
| 495 | </varlistentry>
|
---|
| 496 |
|
---|
| 497 | <varlistentry id="pcprofiledump">
|
---|
| 498 | <term><command>pcprofiledump</command></term>
|
---|
| 499 | <listitem>
|
---|
| 500 | <para>Dumps information generated by PC profiling</para>
|
---|
| 501 | <indexterm zone="ch-system-glibc pcprofiledump">
|
---|
| 502 | <primary sortas="b-pcprofiledump">pcprofiledump</primary>
|
---|
| 503 | </indexterm>
|
---|
| 504 | </listitem>
|
---|
| 505 | </varlistentry>
|
---|
| 506 |
|
---|
| 507 | <varlistentry id="pt_chown">
|
---|
| 508 | <term><command>pt_chown</command></term>
|
---|
| 509 | <listitem>
|
---|
| 510 | <para>A helper program for <command>grantpt</command> to set the owner,
|
---|
| 511 | group and access permissions of a slave pseudo terminal</para>
|
---|
| 512 | <indexterm zone="ch-system-glibc pt_chown">
|
---|
| 513 | <primary sortas="b-pt_chown">pt_chown</primary>
|
---|
| 514 | </indexterm>
|
---|
| 515 | </listitem>
|
---|
| 516 | </varlistentry>
|
---|
| 517 |
|
---|
| 518 | <varlistentry id="rpcgen">
|
---|
| 519 | <term><command>rpcgen</command></term>
|
---|
| 520 | <listitem>
|
---|
| 521 | <para>Generates C code to implement the Remote Procecure Call (RPC)
|
---|
| 522 | protocol</para>
|
---|
| 523 | <indexterm zone="ch-system-glibc rpcgen">
|
---|
| 524 | <primary sortas="b-rpcgen">rpcgen</primary>
|
---|
| 525 | </indexterm>
|
---|
| 526 | </listitem>
|
---|
| 527 | </varlistentry>
|
---|
| 528 |
|
---|
| 529 | <varlistentry id="rpcinfo">
|
---|
| 530 | <term><command>rpcinfo</command></term>
|
---|
| 531 | <listitem>
|
---|
| 532 | <para>Makes an RPC call to an RPC server</para>
|
---|
| 533 | <indexterm zone="ch-system-glibc rpcinfo">
|
---|
| 534 | <primary sortas="b-rpcinfo">rpcinfo</primary>
|
---|
| 535 | </indexterm>
|
---|
| 536 | </listitem>
|
---|
| 537 | </varlistentry>
|
---|
| 538 |
|
---|
| 539 | <varlistentry id="sln">
|
---|
| 540 | <term><command>sln</command></term>
|
---|
| 541 | <listitem>
|
---|
| 542 | <para>A statically linked <command>ln</command> program</para>
|
---|
| 543 | <indexterm zone="ch-system-glibc sln">
|
---|
| 544 | <primary sortas="b-sln">sln</primary>
|
---|
| 545 | </indexterm>
|
---|
| 546 | </listitem>
|
---|
| 547 | </varlistentry>
|
---|
| 548 |
|
---|
| 549 | <varlistentry id="sprof">
|
---|
| 550 | <term><command>sprof</command></term>
|
---|
| 551 | <listitem>
|
---|
| 552 | <para>Reads and displays shared object profiling data</para>
|
---|
| 553 | <indexterm zone="ch-system-glibc sprof">
|
---|
| 554 | <primary sortas="b-sprof">sprof</primary>
|
---|
| 555 | </indexterm>
|
---|
| 556 | </listitem>
|
---|
| 557 | </varlistentry>
|
---|
| 558 |
|
---|
| 559 | <varlistentry id="tzselect">
|
---|
| 560 | <term><command>tzselect</command></term>
|
---|
| 561 | <listitem>
|
---|
| 562 | <para>Asks the user about the location of the
|
---|
| 563 | system and reports the corresponding time zone description</para>
|
---|
| 564 | <indexterm zone="ch-system-glibc tzselect">
|
---|
| 565 | <primary sortas="b-tzselect">tzselect</primary>
|
---|
| 566 | </indexterm>
|
---|
| 567 | </listitem>
|
---|
| 568 | </varlistentry>
|
---|
| 569 |
|
---|
| 570 | <varlistentry id="xtrace">
|
---|
| 571 | <term><command>xtrace</command></term>
|
---|
| 572 | <listitem>
|
---|
| 573 | <para>Traces the execution of a program by
|
---|
| 574 | printing the currently executed function</para>
|
---|
| 575 | <indexterm zone="ch-system-glibc xtrace">
|
---|
| 576 | <primary sortas="b-xtrace">xtrace</primary>
|
---|
| 577 | </indexterm>
|
---|
| 578 | </listitem>
|
---|
| 579 | </varlistentry>
|
---|
| 580 |
|
---|
| 581 | <varlistentry id="zdump">
|
---|
| 582 | <term><command>zdump</command></term>
|
---|
| 583 | <listitem>
|
---|
| 584 | <para>The time zone dumper</para>
|
---|
| 585 | <indexterm zone="ch-system-glibc zdump">
|
---|
| 586 | <primary sortas="b-zdump">zdump</primary>
|
---|
| 587 | </indexterm>
|
---|
| 588 | </listitem>
|
---|
| 589 | </varlistentry>
|
---|
| 590 |
|
---|
| 591 | <varlistentry id="zic">
|
---|
| 592 | <term><command>zic</command></term>
|
---|
| 593 | <listitem>
|
---|
| 594 | <para>The time zone compiler</para>
|
---|
| 595 | <indexterm zone="ch-system-glibc zic">
|
---|
| 596 | <primary sortas="b-zic">zic</primary>
|
---|
| 597 | </indexterm>
|
---|
| 598 | </listitem>
|
---|
| 599 | </varlistentry>
|
---|
| 600 |
|
---|
| 601 | <varlistentry id="ld.so">
|
---|
| 602 | <term><filename class="libraryfile">ld.so</filename></term>
|
---|
| 603 | <listitem>
|
---|
| 604 | <para>The helper program for shared library executables</para>
|
---|
| 605 | <indexterm zone="ch-system-glibc ld.so">
|
---|
| 606 | <primary sortas="c-ld.so">ld.so</primary>
|
---|
| 607 | </indexterm>
|
---|
| 608 | </listitem>
|
---|
| 609 | </varlistentry>
|
---|
| 610 |
|
---|
| 611 | <varlistentry id="libBrokenLocale">
|
---|
| 612 | <term><filename class="libraryfile">libBrokenLocale</filename></term>
|
---|
| 613 | <listitem>
|
---|
| 614 | <para>Used by programs, such as Mozilla, to solve broken locales</para>
|
---|
| 615 | <indexterm zone="ch-system-glibc libBrokenLocale">
|
---|
| 616 | <primary sortas="c-libBrokenLocale">libBrokenLocale</primary>
|
---|
| 617 | </indexterm>
|
---|
| 618 | </listitem>
|
---|
| 619 | </varlistentry>
|
---|
| 620 |
|
---|
| 621 | <varlistentry id="libSegFault">
|
---|
| 622 | <term><filename class="libraryfile">libSegFault</filename></term>
|
---|
| 623 | <listitem>
|
---|
| 624 | <para>The segmentation fault signal handler</para>
|
---|
| 625 | <indexterm zone="ch-system-glibc libSegFault">
|
---|
| 626 | <primary sortas="c-libSegFault">libSegFault</primary>
|
---|
| 627 | </indexterm>
|
---|
| 628 | </listitem>
|
---|
| 629 | </varlistentry>
|
---|
| 630 |
|
---|
| 631 | <varlistentry id="libanl">
|
---|
| 632 | <term><filename class="libraryfile">libanl</filename></term>
|
---|
| 633 | <listitem>
|
---|
| 634 | <para>An asynchronous name lookup library</para>
|
---|
| 635 | <indexterm zone="ch-system-glibc libanl">
|
---|
| 636 | <primary sortas="c-libanl">libanl</primary>
|
---|
| 637 | </indexterm>
|
---|
| 638 | </listitem>
|
---|
| 639 | </varlistentry>
|
---|
| 640 |
|
---|
| 641 | <varlistentry id="libbsd-compat">
|
---|
| 642 | <term><filename class="libraryfile">libbsd-compat</filename></term>
|
---|
| 643 | <listitem>
|
---|
| 644 | <para>Provides the portability needed
|
---|
| 645 | in order to run certain Berkey Software Distribution (BSD) programs
|
---|
| 646 | under Linux</para>
|
---|
| 647 | <indexterm zone="ch-system-glibc libbsd-compat">
|
---|
| 648 | <primary sortas="c-libbsd-compat">libbsd-compat</primary>
|
---|
| 649 | </indexterm>
|
---|
| 650 | </listitem>
|
---|
| 651 | </varlistentry>
|
---|
| 652 |
|
---|
| 653 | <varlistentry id="libc">
|
---|
| 654 | <term><filename class="libraryfile">libc</filename></term>
|
---|
| 655 | <listitem>
|
---|
| 656 | <para>The main C library</para>
|
---|
| 657 | <indexterm zone="ch-system-glibc libc">
|
---|
| 658 | <primary sortas="c-libc">libc</primary>
|
---|
| 659 | </indexterm>
|
---|
| 660 | </listitem>
|
---|
| 661 | </varlistentry>
|
---|
| 662 |
|
---|
| 663 | <varlistentry id="libcrypt">
|
---|
| 664 | <term><filename class="libraryfile">libcrypt</filename></term>
|
---|
| 665 | <listitem>
|
---|
| 666 | <para>The cryptography library</para>
|
---|
| 667 | <indexterm zone="ch-system-glibc libcrypt">
|
---|
| 668 | <primary sortas="c-libcrypt">libcrypt</primary>
|
---|
| 669 | </indexterm>
|
---|
| 670 | </listitem>
|
---|
| 671 | </varlistentry>
|
---|
| 672 |
|
---|
| 673 | <varlistentry id="libdl">
|
---|
| 674 | <term><filename class="libraryfile">libdl</filename></term>
|
---|
| 675 | <listitem>
|
---|
| 676 | <para>The dynamic linking interface library</para>
|
---|
| 677 | <indexterm zone="ch-system-glibc libdl">
|
---|
| 678 | <primary sortas="c-libdl">libdl</primary>
|
---|
| 679 | </indexterm>
|
---|
| 680 | </listitem>
|
---|
| 681 | </varlistentry>
|
---|
| 682 |
|
---|
| 683 | <varlistentry id="libg">
|
---|
| 684 | <term><filename class="libraryfile">libg</filename></term>
|
---|
| 685 | <listitem>
|
---|
| 686 | <para>A runtime library for <command>g++</command></para>
|
---|
| 687 | <indexterm zone="ch-system-glibc libg">
|
---|
| 688 | <primary sortas="c-libg">libg</primary>
|
---|
| 689 | </indexterm>
|
---|
| 690 | </listitem>
|
---|
| 691 | </varlistentry>
|
---|
| 692 |
|
---|
| 693 | <varlistentry id="libieee">
|
---|
| 694 | <term><filename class="libraryfile">libieee</filename></term>
|
---|
| 695 | <listitem>
|
---|
| 696 | <para>The Institute of Electrical and Electronic Engineers (IEEE)
|
---|
| 697 | floating point library</para>
|
---|
| 698 | <indexterm zone="ch-system-glibc libieee">
|
---|
| 699 | <primary sortas="c-libieee">libieee</primary>
|
---|
| 700 | </indexterm>
|
---|
| 701 | </listitem>
|
---|
| 702 | </varlistentry>
|
---|
| 703 |
|
---|
| 704 | <varlistentry id="libm">
|
---|
| 705 | <term><filename class="libraryfile">libm</filename></term>
|
---|
| 706 | <listitem>
|
---|
| 707 | <para>The mathematical library</para>
|
---|
| 708 | <indexterm zone="ch-system-glibc libm">
|
---|
| 709 | <primary sortas="c-libm">libm</primary>
|
---|
| 710 | </indexterm>
|
---|
| 711 | </listitem>
|
---|
| 712 | </varlistentry>
|
---|
| 713 |
|
---|
| 714 | <varlistentry id="libmcheck">
|
---|
| 715 | <term><filename class="libraryfile">libmcheck</filename></term>
|
---|
| 716 | <listitem>
|
---|
| 717 | <para>Contains code run at boot</para>
|
---|
| 718 | <indexterm zone="ch-system-glibc libmcheck">
|
---|
| 719 | <primary sortas="c-libmcheck">libmcheck</primary>
|
---|
| 720 | </indexterm>
|
---|
| 721 | </listitem>
|
---|
| 722 | </varlistentry>
|
---|
| 723 |
|
---|
| 724 | <varlistentry id="libmemusage">
|
---|
| 725 | <term><filename class="libraryfile">libmemusage</filename></term>
|
---|
| 726 | <listitem>
|
---|
| 727 | <para>Used by <command>memusage</command> to help collect
|
---|
| 728 | information about the memory usage of a program</para>
|
---|
| 729 | <indexterm zone="ch-system-glibc libmemusage">
|
---|
| 730 | <primary sortas="c-libmemusage">libmemusage</primary>
|
---|
| 731 | </indexterm>
|
---|
| 732 | </listitem>
|
---|
| 733 | </varlistentry>
|
---|
| 734 |
|
---|
| 735 | <varlistentry id="libnsl">
|
---|
| 736 | <term><filename class="libraryfile">libnsl</filename></term>
|
---|
| 737 | <listitem>
|
---|
| 738 | <para>The network services library</para>
|
---|
| 739 | <indexterm zone="ch-system-glibc libnsl">
|
---|
| 740 | <primary sortas="c-libnsl">libnsl</primary>
|
---|
| 741 | </indexterm>
|
---|
| 742 | </listitem>
|
---|
| 743 | </varlistentry>
|
---|
| 744 |
|
---|
| 745 | <varlistentry id="libnss">
|
---|
| 746 | <term><filename class="libraryfile">libnss</filename></term>
|
---|
| 747 | <listitem>
|
---|
| 748 | <para>The Name Service Switch libraries, containing functions for
|
---|
| 749 | resolving host names, user names, group names, aliases, services,
|
---|
| 750 | protocols, etc.</para>
|
---|
| 751 | <indexterm zone="ch-system-glibc libnss">
|
---|
| 752 | <primary sortas="c-libnss">libnss</primary>
|
---|
| 753 | </indexterm>
|
---|
| 754 | </listitem>
|
---|
| 755 | </varlistentry>
|
---|
| 756 |
|
---|
| 757 | <varlistentry id="libpcprofile">
|
---|
| 758 | <term><filename class="libraryfile">libpcprofile</filename></term>
|
---|
| 759 | <listitem>
|
---|
| 760 | <para>Contains profiling functions used to track the amount of CPU
|
---|
| 761 | time spent in specific source code lines</para>
|
---|
| 762 | <indexterm zone="ch-system-glibc libpcprofile">
|
---|
| 763 | <primary sortas="c-libpcprofile">libpcprofile</primary>
|
---|
| 764 | </indexterm>
|
---|
| 765 | </listitem>
|
---|
| 766 | </varlistentry>
|
---|
| 767 |
|
---|
| 768 | <varlistentry id="libpthread">
|
---|
| 769 | <term><filename class="libraryfile">libpthread</filename></term>
|
---|
| 770 | <listitem>
|
---|
| 771 | <para>The POSIX threads library</para>
|
---|
| 772 | <indexterm zone="ch-system-glibc libpthread">
|
---|
| 773 | <primary sortas="c-libpthread">libpthread</primary>
|
---|
| 774 | </indexterm>
|
---|
| 775 | </listitem>
|
---|
| 776 | </varlistentry>
|
---|
| 777 |
|
---|
| 778 | <varlistentry id="libresolv">
|
---|
| 779 | <term><filename class="libraryfile">libresolv</filename></term>
|
---|
| 780 | <listitem>
|
---|
| 781 | <para>Contains functions for creating, sending, and interpreting
|
---|
| 782 | packets to the Internet domain name servers</para>
|
---|
| 783 | <indexterm zone="ch-system-glibc libresolv">
|
---|
| 784 | <primary sortas="c-libresolv">libresolv</primary>
|
---|
| 785 | </indexterm>
|
---|
| 786 | </listitem>
|
---|
| 787 | </varlistentry>
|
---|
| 788 |
|
---|
| 789 | <varlistentry id="librpcsvc">
|
---|
| 790 | <term><filename class="libraryfile">librpcsvc</filename></term>
|
---|
| 791 | <listitem>
|
---|
| 792 | <para>Contains functions providing miscellaneous RPC services</para>
|
---|
| 793 | <indexterm zone="ch-system-glibc librpcsvc">
|
---|
| 794 | <primary sortas="c-librpcsvc">librpcsvc</primary>
|
---|
| 795 | </indexterm>
|
---|
| 796 | </listitem>
|
---|
| 797 | </varlistentry>
|
---|
| 798 |
|
---|
| 799 | <varlistentry id="librt">
|
---|
| 800 | <term><filename class="libraryfile">librt</filename></term>
|
---|
| 801 | <listitem>
|
---|
| 802 | <para>Contains functions providing most of the interfaces specified by
|
---|
| 803 | the POSIX.1b Realtime Extension</para>
|
---|
| 804 | <indexterm zone="ch-system-glibc librt">
|
---|
| 805 | <primary sortas="c-librt">librt</primary>
|
---|
| 806 | </indexterm>
|
---|
| 807 | </listitem>
|
---|
| 808 | </varlistentry>
|
---|
| 809 |
|
---|
| 810 | <varlistentry id="libthread_db">
|
---|
| 811 | <term><filename class="libraryfile">libthread_db</filename></term>
|
---|
| 812 | <listitem>
|
---|
| 813 | <para>Contains functions useful for
|
---|
| 814 | building debuggers for multi-threaded programs</para>
|
---|
| 815 | <indexterm zone="ch-system-glibc libthread_db">
|
---|
| 816 | <primary sortas="c-libthread_db">libthread_db</primary>
|
---|
| 817 | </indexterm>
|
---|
| 818 | </listitem>
|
---|
| 819 | </varlistentry>
|
---|
| 820 |
|
---|
| 821 | <varlistentry id="libutil">
|
---|
| 822 | <term><filename class="libraryfile">libutil</filename></term>
|
---|
| 823 | <listitem>
|
---|
| 824 | <para>Contains code for <quote>standard</quote> functions used in
|
---|
| 825 | many different Unix utilities</para>
|
---|
| 826 | <indexterm zone="ch-system-glibc libutil">
|
---|
| 827 | <primary sortas="c-libutil">libutil</primary>
|
---|
| 828 | </indexterm>
|
---|
| 829 | </listitem>
|
---|
| 830 | </varlistentry>
|
---|
| 831 |
|
---|
| 832 | </variablelist>
|
---|
| 833 |
|
---|
| 834 | </sect2>
|
---|
| 835 |
|
---|
| 836 | </sect1>
|
---|