[673b0d8] | 1 | <?xml version="1.0" encoding="ISO-8859-1"?>
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[1770019] | 2 | <!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
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[673b0d8] | 3 | <!ENTITY % general-entities SYSTEM "../general.ent">
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| 4 | %general-entities;
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| 5 | ]>
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[81fd230] | 6 | <sect1 id="ch-system-glibc" role="wrap">
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[673b0d8] | 7 | <title>Glibc-&glibc-version;</title>
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| 8 | <?dbhtml filename="glibc.html"?>
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| 9 |
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| 10 | <indexterm zone="ch-system-glibc"><primary sortas="a-Glibc">Glibc</primary></indexterm>
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[6370fa6] | 11 |
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[a001133] | 12 | <sect2 role="package"><title/>
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[5ebdc13] | 13 | <para>The Glibc package contains the main C library. This library provides
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[81fd230] | 14 | the basic routines for allocating memory, searching directories, opening and
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| 15 | closing files, reading and writing files, string handling, pattern matching,
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| 16 | arithmetic, and so on.</para>
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[5888299] | 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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[a9aebc42] | 21 | <seglistitem><seg>16.7 SBU</seg><seg>500 MB</seg></seglistitem>
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[a001133] | 22 | </segmentedlist>
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[673b0d8] | 23 |
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[81fd230] | 24 | <segmentedlist>
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[45992ae] | 25 | <segtitle>&dependencies;</segtitle>
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[81fd230] | 26 | <seglistitem><seg>Bash, Binutils, Coreutils, Diffutils,
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| 27 | Gawk, GCC, Gettext, Grep, Make, Perl, Sed, and Texinfo</seg></seglistitem>
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| 28 | </segmentedlist>
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[a001133] | 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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[791a9ec] | 34 | <note><para>Some packages outside of LFS suggest installing GNU libiconv in
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| 35 | order to translate data from one encoding to another. The project's home page
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| 36 | (<ulink url="http://www.gnu.org/software/libiconv/"/>) says <quote>This library
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| 37 | provides an <function>iconv()</function> implementation, for use on systems
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| 38 | which don't have one, or whose implementation cannot convert from/to Unicode.
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| 39 | </quote> Glibc provides an <function>iconv()</function> implementation and can
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| 40 | convert from/to Unicode, therefore libiconv is not required on an LFS
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| 41 | system.</para></note>
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| 42 |
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[81fd230] | 43 | <para>The Glibc build system is self-contained and will install
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| 44 | perfectly, even though the compiler specs file and linker are still
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| 45 | pointing at <filename class="directory">/tools</filename>. The specs
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| 46 | and linker cannot be adjusted before the Glibc install because the
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| 47 | Glibc autoconf tests would give false results and defeat the goal
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| 48 | of achieving a clean build.</para>
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[73941fd] | 49 |
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[46a2e9c] | 50 | <para>The glibc-libidn tarball adds support for internationalized
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| 51 | domain names (IDN) to Glibc. Many programs that
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| 52 | support IDN require the full libidn library (see
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| 53 | <ulink url="&blfs-root;view/svn/general/libidn.html"/>),
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| 54 | not this add-on.
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| 55 | Unpack the tarball from within the Glibc source
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| 56 | directory:</para>
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| 57 |
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| 58 | <screen><userinput>tar jxf ../glibc-libidn-&glibc-version;.tar.bz2</userinput></screen>
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| 59 |
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| 60 | <para>In the vi_VN.TCVN locale, <command>bash</command> enters an infinite loop
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| 61 | at startup. It is unknown whether this is a <command>bash</command> bug or a
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| 62 | Glibc problem. Disable installation of this locale in order to avoid the
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| 63 | problem:</para>
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| 64 |
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| 65 | <screen><userinput>sed -i '/vi_VN.TCVN/d' localedata/SUPPORTED</userinput></screen>
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| 66 |
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[81fd230] | 67 | <para>The Glibc documentation recommends building Glibc outside of the source
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| 68 | directory in a dedicated build directory:</para>
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[73aedd1d] | 69 |
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[5998892] | 70 | <screen><userinput>mkdir -v ../glibc-build
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[73aedd1d] | 71 | cd ../glibc-build</userinput></screen>
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| 72 |
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[81fd230] | 73 | <para>Prepare Glibc for compilation:</para>
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[73aedd1d] | 74 |
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[9dfc02f] | 75 | <screen><userinput>../glibc-&glibc-version;/configure --prefix=/usr \
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[084db8d] | 76 | --disable-profile --enable-add-ons \
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[8e97f32] | 77 | --enable-kernel=2.6.0 --libexecdir=/usr/lib/glibc</userinput></screen>
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[73aedd1d] | 78 |
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[fc298480] | 79 | <para>The meaning of the new configure options:</para>
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[81fd230] | 80 |
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| 81 | <variablelist>
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| 82 | <varlistentry>
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| 83 | <term><parameter>--libexecdir=/usr/lib/glibc</parameter></term>
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| 84 | <listitem><para>This changes the location of the
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| 85 | <command>pt_chown</command> program from its default of <filename
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| 86 | class="directory">/usr/libexec</filename> to <filename
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| 87 | class="directory">/usr/lib/glibc</filename>.</para></listitem>
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| 88 | </varlistentry>
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| 89 | </variablelist>
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| 90 |
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[73aedd1d] | 91 | <para>Compile the package:</para>
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| 92 |
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| 93 | <screen><userinput>make</userinput></screen>
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| 94 |
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[81fd230] | 95 | <important><para>In this section, the test suite for Glibc is
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| 96 | considered critical. Do not skip it under any
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| 97 | circumstance.</para></important>
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| 98 |
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[73aedd1d] | 99 | <para>Test the results:</para>
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| 100 |
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[03e9011] | 101 | <screen><userinput>make -k check >glibc-check-log 2>&1
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| 102 | grep Error glibc-check-log</userinput></screen>
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[2e02c35] | 103 |
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| 104 | <para>On at least i686 you can expect to see failures in the <emphasis>test-double
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[5ebdc13] | 105 | </emphasis> and <emphasis>test-idouble</emphasis> math tests with
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[2e02c35] | 106 | gcc-&gcc-version;, as well as an expected (ignored) failure in <emphasis>
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| 107 | posix/annexc</emphasis>. These two failures in the math tests appear to be
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| 108 | harmless.</para>
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[73aedd1d] | 109 |
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[81fd230] | 110 | <para>The Glibc test suite is highly dependent on certain functions of
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[2e02c35] | 111 | the host system, in particular the kernel. In certain circumstances,
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[81fd230] | 112 | some failures are unavoidable. This is a list of the most common
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| 113 | issues:</para>
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| 114 |
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| 115 | <itemizedlist>
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[2e02c35] | 116 | <listitem><para>The <emphasis>math</emphasis> tests sometimes fail in other tests
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| 117 | when running
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[81fd230] | 118 | on systems where the CPU is not a relatively new genuine Intel or authentic AMD.
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| 119 | Certain optimization settings are also known to be a factor here.</para></listitem>
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| 120 |
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| 121 | <listitem><para>The <emphasis>gettext</emphasis> test sometimes fails due to
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| 122 | host system issues. The exact reasons are not yet clear.</para></listitem>
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| 123 |
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[c4d687f] | 124 | <listitem><para>If you have mounted the LFS partition with the
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[2645ec6] | 125 | <parameter>noatime</parameter> option, the <emphasis>atime</emphasis> test will
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| 126 | fail. As mentioned in <xref linkend="space-mounting"/>, do not use the
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| 127 | <parameter>noatime</parameter> option while building LFS.</para></listitem>
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[81fd230] | 128 |
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| 129 | <listitem><para>When running on older and slower hardware, some tests
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| 130 | can fail because of test timeouts being exceeded.</para></listitem>
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| 131 | </itemizedlist>
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| 132 |
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| 133 | <para>Though it is a harmless message, the install stage of Glibc will
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| 134 | complain about the absence of <filename>/etc/ld.so.conf</filename>.
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| 135 | Prevent this warning with:</para>
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[1caa48e] | 136 |
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| 137 | <screen><userinput>touch /etc/ld.so.conf</userinput></screen>
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| 138 |
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[81fd230] | 139 | <para>Install the package:</para>
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[73aedd1d] | 140 |
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[46a2e9c] | 141 | <screen><userinput>make install_root=/ install</userinput></screen>
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[73aedd1d] | 142 |
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[46a2e9c] | 143 | <para>The meaning of the make option:</para>
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[73aedd1d] | 144 |
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[46a2e9c] | 145 | <variablelist>
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| 146 | <varlistentry>
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| 147 | <term><parameter>install_root=/</parameter></term>
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| 148 | <listitem><para>This causes the Glibc Makefile not to run the
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| 149 | <filename>scripts/test-installation.pl</filename> script at the end
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| 150 | of Glibc installation. Since the toolchain has not been adjusted yet for
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| 151 | the new Glibc, this script would test Glibc installed in
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| 152 | <filename class="directory">/tools</filename> and fail because the
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| 153 | libidn add-on has not been installed there.</para></listitem>
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| 154 | </varlistentry>
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| 155 | </variablelist>
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[73aedd1d] | 156 |
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[46a2e9c] | 157 | <para>The locales that can make the system respond in a different
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| 158 | language were not installed by the above command. None of the
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| 159 | locales are required, but, if some of them are misssing, testuites of the
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| 160 | future packages would skip important testcases.</para>
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| 161 |
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| 162 | <para>Individual locales can be installed using the <command>localedef</command>
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| 163 | program. E.g., the first <command>localedef</command> command below combines
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| 164 | the <filename>/usr/share/i18n/locales/de_DE</filename> charset-independent
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| 165 | locale definition with the
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| 166 | <filename>/usr/share/i18n/charmaps/ISO-8859-1.gz</filename> charmap definition
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| 167 | and appends the result to the
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| 168 | <filename>/usr/lib/locale/locale-archive</filename> file. The following
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| 169 | instructions will install the minimum set of locales necessary
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| 170 | for the optimal coverage of tests:</para>
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[3f0c882] | 171 |
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[03e9011] | 172 | <screen role="nodump"><userinput>mkdir -pv /usr/lib/locale
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[73aedd1d] | 173 | localedef -i de_DE -f ISO-8859-1 de_DE
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| 174 | localedef -i de_DE@euro -f ISO-8859-15 de_DE@euro
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| 175 | localedef -i en_HK -f ISO-8859-1 en_HK
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| 176 | localedef -i en_PH -f ISO-8859-1 en_PH
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| 177 | localedef -i en_US -f ISO-8859-1 en_US
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| 178 | localedef -i es_MX -f ISO-8859-1 es_MX
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[673b0d8] | 179 | localedef -i fa_IR -f UTF-8 fa_IR
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[73aedd1d] | 180 | localedef -i fr_FR -f ISO-8859-1 fr_FR
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| 181 | localedef -i fr_FR@euro -f ISO-8859-15 fr_FR@euro
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[46a2e9c] | 182 | localedef -i fr_FR.UTF-8 -f UTF-8 fr_FR
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[73aedd1d] | 183 | localedef -i it_IT -f ISO-8859-1 it_IT
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| 184 | localedef -i ja_JP -f EUC-JP ja_JP</userinput></screen>
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| 185 |
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[46a2e9c] | 186 | <para>In addition, install the locale for your own country, language and
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| 187 | character set.</para>
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| 188 |
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| 189 | <para>Alternatively, install all locales
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| 190 | listed in the <filename>glibc-&glibc-version;/localedata/SUPPORTED</filename>
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| 191 | file (it includes every locale listed above and many more)
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| 192 | at once with the following time-consuming command:</para>
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| 193 |
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| 194 | <screen><userinput>make localedata/install-locales</userinput></screen>
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| 195 |
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| 196 | <para>Then use the <command>localedef</command> command to create and
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| 197 | install locales not listed in the
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| 198 | <filename>glibc-&glibc-version;/localedata/SUPPORTED</filename> file
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| 199 | in the unlikely case if you need them.</para>
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| 200 | <!-- The Live CD patches the localedata/SUPPORTED file instead of
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| 201 | running localedef, the results are equivalent -->
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[81fd230] | 202 |
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[73aedd1d] | 203 | </sect2>
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[5888299] | 204 |
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[8c16bf7] | 205 | <sect2 id="conf-glibc" role="configuration"><title>Configuring Glibc</title>
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[81fd230] | 206 | <indexterm zone="conf-glibc"><primary sortas="e-/etc/nsswitch.conf">/etc/nsswitch.conf</primary></indexterm>
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| 207 | <indexterm zone="conf-glibc"><primary sortas="e-/etc/localtime">/etc/localtime</primary></indexterm>
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| 208 |
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[2645ec6] | 209 | <para>The <filename>/etc/nsswitch.conf</filename> file needs to be created
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| 210 | because, although Glibc provides defaults when this file is missing or corrupt,
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| 211 | the Glibc defaults do not work well in a networked environment. The time zone
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| 212 | also needs to be configured.</para>
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[342b176] | 213 |
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| 214 | <para>Create a new file <filename>/etc/nsswitch.conf</filename> by running the
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| 215 | following:</para>
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| 216 |
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[bb55064] | 217 | <screen><userinput>cat > /etc/nsswitch.conf << "EOF"
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[d72e04a] | 218 | <literal># Begin /etc/nsswitch.conf
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[342b176] | 219 |
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| 220 | passwd: files
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| 221 | group: files
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| 222 | shadow: files
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| 223 |
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| 224 | hosts: files dns
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| 225 | networks: files
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| 226 |
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[4a80bec] | 227 | protocols: files
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| 228 | services: files
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| 229 | ethers: files
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| 230 | rpc: files
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[342b176] | 231 |
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[d72e04a] | 232 | # End /etc/nsswitch.conf</literal>
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[bb55064] | 233 | EOF</userinput></screen>
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[342b176] | 234 |
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[81fd230] | 235 | <para>To determine the local time zone, run the following script:</para>
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[342b176] | 236 |
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[be4be92] | 237 | <screen role="nodump"><userinput>tzselect</userinput></screen>
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[342b176] | 238 |
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[81fd230] | 239 | <para>After answering a few questions about the location, the script
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| 240 | will output the name of the time zone (e.g.,
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| 241 | <emphasis>EST5EDT</emphasis> or <emphasis>Canada/Eastern</emphasis>).
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| 242 | Then create the <filename>/etc/localtime</filename> file by
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| 243 | running:</para>
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[342b176] | 244 |
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[893d40b] | 245 | <screen><userinput>cp -v --remove-destination /usr/share/zoneinfo/<replaceable>[xxx]</replaceable> \
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[3f0c882] | 246 | /etc/localtime</userinput></screen>
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[342b176] | 247 |
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[2645ec6] | 248 | <para>Replace <replaceable>[xxx]</replaceable> with the name of the time zone
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| 249 | that <command>tzselect</command> provided (e.g., Canada/Eastern).</para>
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[81fd230] | 250 |
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| 251 | <para>The meaning of the cp option:</para>
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| 252 |
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| 253 | <variablelist>
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| 254 | <varlistentry>
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| 255 | <term><parameter>--remove-destination</parameter></term>
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| 256 | <listitem><para>This is needed to force removal of the already
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| 257 | existing symbolic link. The reason for copying the file instead of
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| 258 | using a symlink is to cover the situation where <filename
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| 259 | class="directory">/usr</filename> is on a separate partition. This
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| 260 | could be important when booted into single user
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| 261 | mode.</para></listitem>
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| 262 | </varlistentry>
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| 263 | </variablelist>
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| 264 |
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[342b176] | 265 | </sect2>
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| 266 |
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| 267 |
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[8c16bf7] | 268 | <sect2 id="conf-ld" role="configuration">
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[342b176] | 269 | <title>Configuring Dynamic Loader</title>
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[81fd230] | 270 | <indexterm zone="conf-ld"><primary sortas="e-/etc/ld.so.conf">/etc/ld.so.conf</primary></indexterm>
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| 271 |
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| 272 | <para>By default, the dynamic loader (<filename
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| 273 | class="libraryfile">/lib/ld-linux.so.2</filename>) searches through
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| 274 | <filename class="directory">/lib</filename> and <filename
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| 275 | class="directory">/usr/lib</filename> for dynamic libraries that are
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| 276 | needed by programs as they are run. However, if there are libraries in
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| 277 | directories other than <filename class="directory">/lib</filename> and
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| 278 | <filename class="directory">/usr/lib</filename>, these need to be
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| 279 | added to the <filename>/etc/ld.so.conf</filename> file in order
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| 280 | for the dynamic loader to find them. Two directories that are commonly
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| 281 | known to contain additional libraries are <filename
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| 282 | class="directory">/usr/local/lib</filename> and <filename
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| 283 | class="directory">/opt/lib</filename>, so add those directories to the
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| 284 | dynamic loader's search path.</para>
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[342b176] | 285 |
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| 286 | <para>Create a new file <filename>/etc/ld.so.conf</filename> by running the
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| 287 | following:</para>
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| 288 |
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[bb55064] | 289 | <screen><userinput>cat > /etc/ld.so.conf << "EOF"
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[d72e04a] | 290 | <literal># Begin /etc/ld.so.conf
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[342b176] | 291 |
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| 292 | /usr/local/lib
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| 293 | /opt/lib
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| 294 |
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[d72e04a] | 295 | # End /etc/ld.so.conf</literal>
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[bb55064] | 296 | EOF</userinput></screen>
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[342b176] | 297 |
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| 298 | </sect2>
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[5888299] | 299 |
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[c6cb3aa] | 300 | <sect2 id="contents-glibc" role="content"><title>Contents of Glibc</title>
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[673b0d8] | 301 |
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[81fd230] | 302 | <segmentedlist>
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| 303 | <segtitle>Installed programs</segtitle>
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| 304 | <segtitle>Installed libraries</segtitle>
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| 305 | <seglistitem><seg>catchsegv, gencat, getconf,
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| 306 | getent, iconv, iconvconfig, ldconfig, ldd, lddlibc4, locale,
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| 307 | localedef, mtrace, nscd, nscd_nischeck, pcprofiledump, pt_chown, rpcgen,
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| 308 | rpcinfo, sln, sprof, tzselect, xtrace, zdump, and zic</seg>
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| 309 | <seg>ld.so, libBrokenLocale.[a,so],
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[46a2e9c] | 310 | libSegFault.so, libanl.[a,so], libbsd-compat.a, libc.[a,so], libcidn.so,
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[81fd230] | 311 | libcrypt.[a,so], libdl.[a,so], libg.a, libieee.a, libm.[a,so], libmcheck.a,
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| 312 | libmemusage.so, libnsl.a, libnss_compat.so, libnss_dns.so, libnss_files.so,
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| 313 | libnss_hesiod.so, libnss_nis.so, libnss_nisplus.so, libpcprofile.so,
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| 314 | libpthread.[a,so], libresolv.[a,so], librpcsvc.a, librt.[a,so],
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| 315 | libthread_db.so, and libutil.[a,so]</seg></seglistitem>
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| 316 | </segmentedlist>
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| 317 |
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| 318 | <variablelist><bridgehead renderas="sect3">Short Descriptions</bridgehead>
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| 319 | <?dbfo list-presentation="list"?>
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[bab5592] | 320 | <?dbhtml list-presentation="table"?>
|
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[81fd230] | 321 |
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| 322 | <varlistentry id="catchsegv">
|
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| 323 | <term><command>catchsegv</command></term>
|
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| 324 | <listitem>
|
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| 325 | <para>Can be used to create a stack trace when a program
|
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| 326 | terminates with a segmentation fault</para>
|
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| 327 | <indexterm zone="ch-system-glibc catchsegv"><primary sortas="b-catchsegv">catchsegv</primary></indexterm>
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| 328 | </listitem>
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| 329 | </varlistentry>
|
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| 330 |
|
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| 331 | <varlistentry id="gencat">
|
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| 332 | <term><command>gencat</command></term>
|
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| 333 | <listitem>
|
---|
| 334 | <para>Generates message catalogues</para>
|
---|
| 335 | <indexterm zone="ch-system-glibc gencat"><primary sortas="b-gencat">gencat</primary></indexterm>
|
---|
| 336 | </listitem>
|
---|
| 337 | </varlistentry>
|
---|
| 338 |
|
---|
| 339 | <varlistentry id="getconf">
|
---|
| 340 | <term><command>getconf</command></term>
|
---|
| 341 | <listitem>
|
---|
| 342 | <para>Displays the system configuration values for file system specific variables</para>
|
---|
| 343 | <indexterm zone="ch-system-glibc getconf"><primary sortas="b-getconf">getconf</primary></indexterm>
|
---|
| 344 | </listitem>
|
---|
| 345 | </varlistentry>
|
---|
| 346 |
|
---|
| 347 | <varlistentry id="getent">
|
---|
| 348 | <term><command>getent</command></term>
|
---|
| 349 | <listitem>
|
---|
| 350 | <para>Gets entries from an administrative database</para>
|
---|
| 351 | <indexterm zone="ch-system-glibc getent"><primary sortas="b-getent">getent</primary></indexterm>
|
---|
| 352 | </listitem>
|
---|
| 353 | </varlistentry>
|
---|
| 354 |
|
---|
| 355 | <varlistentry id="iconv">
|
---|
| 356 | <term><command>iconv</command></term>
|
---|
| 357 | <listitem>
|
---|
| 358 | <para>Performs character set conversion</para>
|
---|
| 359 | <indexterm zone="ch-system-glibc iconv"><primary sortas="b-iconv">iconv</primary></indexterm>
|
---|
| 360 | </listitem>
|
---|
| 361 | </varlistentry>
|
---|
| 362 |
|
---|
| 363 | <varlistentry id="iconvconfig">
|
---|
| 364 | <term><command>iconvconfig</command></term>
|
---|
| 365 | <listitem>
|
---|
| 366 | <para>Creates fastloading <command>iconv</command> module configuration files</para>
|
---|
| 367 | <indexterm zone="ch-system-glibc iconvconfig"><primary sortas="b-iconvconfig">iconvconfig</primary></indexterm>
|
---|
| 368 | </listitem>
|
---|
| 369 | </varlistentry>
|
---|
| 370 |
|
---|
| 371 | <varlistentry id="ldconfig">
|
---|
| 372 | <term><command>ldconfig</command></term>
|
---|
| 373 | <listitem>
|
---|
| 374 | <para>Configures the dynamic linker runtime bindings</para>
|
---|
| 375 | <indexterm zone="ch-system-glibc ldconfig"><primary sortas="b-ldconfig">ldconfig</primary></indexterm>
|
---|
| 376 | </listitem>
|
---|
| 377 | </varlistentry>
|
---|
| 378 |
|
---|
| 379 | <varlistentry id="ldd">
|
---|
| 380 | <term><command>ldd</command></term>
|
---|
| 381 | <listitem>
|
---|
| 382 | <para>Reports which shared libraries are required
|
---|
| 383 | by each given program or shared library</para>
|
---|
| 384 | <indexterm zone="ch-system-glibc ldd"><primary sortas="b-ldd">ldd</primary></indexterm>
|
---|
| 385 | </listitem>
|
---|
| 386 | </varlistentry>
|
---|
| 387 |
|
---|
| 388 | <varlistentry id="lddlibc4">
|
---|
| 389 | <term><command>lddlibc4</command></term>
|
---|
| 390 | <listitem>
|
---|
| 391 | <para>Assists <command>ldd</command> with object files</para>
|
---|
| 392 | <indexterm zone="ch-system-glibc lddlibc4"><primary sortas="b-lddlibc4">lddlibc4</primary></indexterm>
|
---|
| 393 | </listitem>
|
---|
| 394 | </varlistentry>
|
---|
| 395 |
|
---|
| 396 | <varlistentry id="locale">
|
---|
| 397 | <term><command>locale</command></term>
|
---|
| 398 | <listitem>
|
---|
[46a2e9c] | 399 | <para>Prints various information about the current locale</para>
|
---|
[81fd230] | 400 | <indexterm zone="ch-system-glibc locale"><primary sortas="b-locale">locale</primary></indexterm>
|
---|
| 401 | </listitem>
|
---|
| 402 | </varlistentry>
|
---|
| 403 |
|
---|
| 404 | <varlistentry id="localedef">
|
---|
| 405 | <term><command>localedef</command></term>
|
---|
| 406 | <listitem>
|
---|
| 407 | <para>Compiles locale specifications</para>
|
---|
| 408 | <indexterm zone="ch-system-glibc localedef"><primary sortas="b-localedef">localedef</primary></indexterm>
|
---|
| 409 | </listitem>
|
---|
| 410 | </varlistentry>
|
---|
| 411 |
|
---|
| 412 | <varlistentry id="mtrace">
|
---|
| 413 | <term><command>mtrace</command></term>
|
---|
| 414 | <listitem>
|
---|
[bc2136e] | 415 | <para>Reads and interprets a memory trace file and displays a summary in human-readable format</para>
|
---|
[81fd230] | 416 | <indexterm zone="ch-system-glibc mtrace"><primary sortas="b-mtrace">mtrace</primary></indexterm>
|
---|
| 417 | </listitem>
|
---|
| 418 | </varlistentry>
|
---|
| 419 |
|
---|
| 420 | <varlistentry id="nscd">
|
---|
| 421 | <term><command>nscd</command></term>
|
---|
| 422 | <listitem>
|
---|
| 423 | <para>A daemon that provides a cache for the most common name
|
---|
| 424 | service requests</para>
|
---|
| 425 | <indexterm zone="ch-system-glibc nscd"><primary sortas="b-nscd">nscd</primary></indexterm>
|
---|
| 426 | </listitem>
|
---|
| 427 | </varlistentry>
|
---|
| 428 |
|
---|
| 429 | <varlistentry id="nscd_nischeck">
|
---|
| 430 | <term><command>nscd_nischeck</command></term>
|
---|
| 431 | <listitem>
|
---|
| 432 | <para>Checks whether or not secure mode is necessary for NIS+ lookup</para>
|
---|
| 433 | <indexterm zone="ch-system-glibc nscd_nischeck"><primary sortas="b-nscd_nischeck">nscd_nischeck</primary></indexterm>
|
---|
| 434 | </listitem>
|
---|
| 435 | </varlistentry>
|
---|
| 436 |
|
---|
| 437 | <varlistentry id="pcprofiledump">
|
---|
| 438 | <term><command>pcprofiledump</command></term>
|
---|
| 439 | <listitem>
|
---|
| 440 | <para>Dumps information generated by PC profiling</para>
|
---|
| 441 | <indexterm zone="ch-system-glibc pcprofiledump"><primary sortas="b-pcprofiledump">pcprofiledump</primary></indexterm>
|
---|
| 442 | </listitem>
|
---|
| 443 | </varlistentry>
|
---|
| 444 |
|
---|
| 445 | <varlistentry id="pt_chown">
|
---|
| 446 | <term><command>pt_chown</command></term>
|
---|
| 447 | <listitem>
|
---|
| 448 | <para>A helper program for <command>grantpt</command> to set
|
---|
| 449 | the owner, group and access permissions of a slave pseudo terminal</para>
|
---|
| 450 | <indexterm zone="ch-system-glibc pt_chown"><primary sortas="b-pt_chown">pt_chown</primary></indexterm>
|
---|
| 451 | </listitem>
|
---|
| 452 | </varlistentry>
|
---|
| 453 |
|
---|
| 454 | <varlistentry id="rpcgen">
|
---|
| 455 | <term><command>rpcgen</command></term>
|
---|
| 456 | <listitem>
|
---|
| 457 | <para>Generates C code to implement the Remote Procecure Call (RPC) protocol</para>
|
---|
| 458 | <indexterm zone="ch-system-glibc rpcgen"><primary sortas="b-rpcgen">rpcgen</primary></indexterm>
|
---|
| 459 | </listitem>
|
---|
| 460 | </varlistentry>
|
---|
| 461 |
|
---|
| 462 | <varlistentry id="rpcinfo">
|
---|
| 463 | <term><command>rpcinfo</command></term>
|
---|
| 464 | <listitem>
|
---|
| 465 | <para>Makes an RPC call to an RPC server</para>
|
---|
| 466 | <indexterm zone="ch-system-glibc rpcinfo"><primary sortas="b-rpcinfo">rpcinfo</primary></indexterm>
|
---|
| 467 | </listitem>
|
---|
| 468 | </varlistentry>
|
---|
| 469 |
|
---|
| 470 | <varlistentry id="sln">
|
---|
| 471 | <term><command>sln</command></term>
|
---|
| 472 | <listitem>
|
---|
| 473 | <para>A statically linked <command>ln</command> program</para>
|
---|
| 474 | <indexterm zone="ch-system-glibc sln"><primary sortas="b-sln">sln</primary></indexterm>
|
---|
| 475 | </listitem>
|
---|
| 476 | </varlistentry>
|
---|
| 477 |
|
---|
| 478 | <varlistentry id="sprof">
|
---|
| 479 | <term><command>sprof</command></term>
|
---|
| 480 | <listitem>
|
---|
| 481 | <para>Reads and displays shared object profiling data</para>
|
---|
| 482 | <indexterm zone="ch-system-glibc sprof"><primary sortas="b-sprof">sprof</primary></indexterm>
|
---|
| 483 | </listitem>
|
---|
| 484 | </varlistentry>
|
---|
| 485 |
|
---|
| 486 | <varlistentry id="tzselect">
|
---|
| 487 | <term><command>tzselect</command></term>
|
---|
| 488 | <listitem>
|
---|
| 489 | <para>Asks the user about the location of the
|
---|
| 490 | system and reports the corresponding time zone description</para>
|
---|
| 491 | <indexterm zone="ch-system-glibc tzselect"><primary sortas="b-tzselect">tzselect</primary></indexterm>
|
---|
| 492 | </listitem>
|
---|
| 493 | </varlistentry>
|
---|
| 494 |
|
---|
| 495 | <varlistentry id="xtrace">
|
---|
| 496 | <term><command>xtrace</command></term>
|
---|
| 497 | <listitem>
|
---|
| 498 | <para>Traces the execution of a program by
|
---|
| 499 | printing the currently executed function</para>
|
---|
| 500 | <indexterm zone="ch-system-glibc xtrace"><primary sortas="b-xtrace">xtrace</primary></indexterm>
|
---|
| 501 | </listitem>
|
---|
| 502 | </varlistentry>
|
---|
| 503 |
|
---|
| 504 | <varlistentry id="zdump">
|
---|
| 505 | <term><command>zdump</command></term>
|
---|
| 506 | <listitem>
|
---|
| 507 | <para>The time zone dumper</para>
|
---|
| 508 | <indexterm zone="ch-system-glibc zdump"><primary sortas="b-zdump">zdump</primary></indexterm>
|
---|
| 509 | </listitem>
|
---|
| 510 | </varlistentry>
|
---|
| 511 |
|
---|
| 512 | <varlistentry id="zic">
|
---|
| 513 | <term><command>zic</command></term>
|
---|
| 514 | <listitem>
|
---|
| 515 | <para>The time zone compiler</para>
|
---|
| 516 | <indexterm zone="ch-system-glibc zic"><primary sortas="b-zic">zic</primary></indexterm>
|
---|
| 517 | </listitem>
|
---|
| 518 | </varlistentry>
|
---|
| 519 |
|
---|
| 520 | <varlistentry id="ld.so">
|
---|
| 521 | <term><filename class="libraryfile">ld.so</filename></term>
|
---|
| 522 | <listitem>
|
---|
| 523 | <para>The helper program for shared library executables</para>
|
---|
| 524 | <indexterm zone="ch-system-glibc ld.so"><primary sortas="c-ld.so">ld.so</primary></indexterm>
|
---|
| 525 | </listitem>
|
---|
| 526 | </varlistentry>
|
---|
| 527 |
|
---|
| 528 | <varlistentry id="libBrokenLocale">
|
---|
| 529 | <term><filename class="libraryfile">libBrokenLocale</filename></term>
|
---|
| 530 | <listitem>
|
---|
[46a2e9c] | 531 | <para>Used internally by Glibc as a gross hack to get broken programs
|
---|
| 532 | (e.g., some Motif applications) running. See comments in
|
---|
| 533 | <filename>glibc-&glibc-version;/locale/broken_cur_max.c</filename> for more
|
---|
| 534 | information</para>
|
---|
[81fd230] | 535 | <indexterm zone="ch-system-glibc libBrokenLocale"><primary sortas="c-libBrokenLocale">libBrokenLocale</primary></indexterm>
|
---|
| 536 | </listitem>
|
---|
| 537 | </varlistentry>
|
---|
| 538 |
|
---|
| 539 | <varlistentry id="libSegFault">
|
---|
| 540 | <term><filename class="libraryfile">libSegFault</filename></term>
|
---|
| 541 | <listitem>
|
---|
[46a2e9c] | 542 | <para>The segmentation fault signal handler, used by
|
---|
| 543 | <command>catchsegv</command></para>
|
---|
[81fd230] | 544 | <indexterm zone="ch-system-glibc libSegFault"><primary sortas="c-libSegFault">libSegFault</primary></indexterm>
|
---|
| 545 | </listitem>
|
---|
| 546 | </varlistentry>
|
---|
| 547 |
|
---|
| 548 | <varlistentry id="libanl">
|
---|
| 549 | <term><filename class="libraryfile">libanl</filename></term>
|
---|
| 550 | <listitem>
|
---|
| 551 | <para>An asynchronous name lookup library</para>
|
---|
| 552 | <indexterm zone="ch-system-glibc libanl"><primary sortas="c-libanl">libanl</primary></indexterm>
|
---|
| 553 | </listitem>
|
---|
| 554 | </varlistentry>
|
---|
| 555 |
|
---|
| 556 | <varlistentry id="libbsd-compat">
|
---|
| 557 | <term><filename class="libraryfile">libbsd-compat</filename></term>
|
---|
| 558 | <listitem>
|
---|
| 559 | <para>Provides the portability needed
|
---|
| 560 | in order to run certain Berkey Software Distribution (BSD) programs under Linux</para>
|
---|
| 561 | <indexterm zone="ch-system-glibc libbsd-compat"><primary sortas="c-libbsd-compat">libbsd-compat</primary></indexterm>
|
---|
| 562 | </listitem>
|
---|
| 563 | </varlistentry>
|
---|
| 564 |
|
---|
| 565 | <varlistentry id="libc">
|
---|
| 566 | <term><filename class="libraryfile">libc</filename></term>
|
---|
| 567 | <listitem>
|
---|
| 568 | <para>The main C library</para>
|
---|
| 569 | <indexterm zone="ch-system-glibc libc"><primary sortas="c-libc">libc</primary></indexterm>
|
---|
| 570 | </listitem>
|
---|
| 571 | </varlistentry>
|
---|
| 572 |
|
---|
[46a2e9c] | 573 | <varlistentry id="libcidn">
|
---|
| 574 | <term><filename class="libraryfile">libcidn</filename></term>
|
---|
| 575 | <listitem>
|
---|
| 576 | <para>Used internally by Glibc for handling internationalized domain names in
|
---|
| 577 | the <function>getaddrinfo()</function> function</para>
|
---|
| 578 | <indexterm zone="ch-system-glibc libcrypt"><primary sortas="c-libcrypt">libcrypt</primary></indexterm>
|
---|
| 579 | </listitem>
|
---|
| 580 | </varlistentry>
|
---|
| 581 |
|
---|
[81fd230] | 582 | <varlistentry id="libcrypt">
|
---|
| 583 | <term><filename class="libraryfile">libcrypt</filename></term>
|
---|
| 584 | <listitem>
|
---|
| 585 | <para>The cryptography library</para>
|
---|
| 586 | <indexterm zone="ch-system-glibc libcrypt"><primary sortas="c-libcrypt">libcrypt</primary></indexterm>
|
---|
| 587 | </listitem>
|
---|
| 588 | </varlistentry>
|
---|
| 589 |
|
---|
| 590 | <varlistentry id="libdl">
|
---|
| 591 | <term><filename class="libraryfile">libdl</filename></term>
|
---|
| 592 | <listitem>
|
---|
| 593 | <para>The dynamic linking interface library</para>
|
---|
| 594 | <indexterm zone="ch-system-glibc libdl"><primary sortas="c-libdl">libdl</primary></indexterm>
|
---|
| 595 | </listitem>
|
---|
| 596 | </varlistentry>
|
---|
| 597 |
|
---|
| 598 | <varlistentry id="libg">
|
---|
| 599 | <term><filename class="libraryfile">libg</filename></term>
|
---|
| 600 | <listitem>
|
---|
[46a2e9c] | 601 | <para>Dummy library containing no functions. Previously was a runtime library
|
---|
| 602 | for <command>g++</command></para>
|
---|
[81fd230] | 603 | <indexterm zone="ch-system-glibc libg"><primary sortas="c-libg">libg</primary></indexterm>
|
---|
| 604 | </listitem>
|
---|
| 605 | </varlistentry>
|
---|
| 606 |
|
---|
| 607 | <varlistentry id="libieee">
|
---|
| 608 | <term><filename class="libraryfile">libieee</filename></term>
|
---|
| 609 | <listitem>
|
---|
[46a2e9c] | 610 | <para>Linking in this module forces error handling rules for math functions as
|
---|
| 611 | defined by the Institute of Electrical and Electronic Engineers (IEEE).
|
---|
| 612 | The default is POSIX.1 error handling</para>
|
---|
[81fd230] | 613 | <indexterm zone="ch-system-glibc libieee"><primary sortas="c-libieee">libieee</primary></indexterm>
|
---|
| 614 | </listitem>
|
---|
| 615 | </varlistentry>
|
---|
| 616 |
|
---|
| 617 | <varlistentry id="libm">
|
---|
| 618 | <term><filename class="libraryfile">libm</filename></term>
|
---|
| 619 | <listitem>
|
---|
| 620 | <para>The mathematical library</para>
|
---|
| 621 | <indexterm zone="ch-system-glibc libm"><primary sortas="c-libm">libm</primary></indexterm>
|
---|
| 622 | </listitem>
|
---|
| 623 | </varlistentry>
|
---|
| 624 |
|
---|
| 625 | <varlistentry id="libmcheck">
|
---|
| 626 | <term><filename class="libraryfile">libmcheck</filename></term>
|
---|
| 627 | <listitem>
|
---|
[46a2e9c] | 628 | <para>Turns on memory allocation checking when linked to</para>
|
---|
[81fd230] | 629 | <indexterm zone="ch-system-glibc libmcheck"><primary sortas="c-libmcheck">libmcheck</primary></indexterm>
|
---|
| 630 | </listitem>
|
---|
| 631 | </varlistentry>
|
---|
| 632 |
|
---|
| 633 | <varlistentry id="libmemusage">
|
---|
| 634 | <term><filename class="libraryfile">libmemusage</filename></term>
|
---|
| 635 | <listitem>
|
---|
| 636 | <para>Used by <command>memusage</command> to help collect
|
---|
| 637 | information about the memory usage of a program</para>
|
---|
| 638 | <indexterm zone="ch-system-glibc libmemusage"><primary sortas="c-libmemusage">libmemusage</primary></indexterm>
|
---|
| 639 | </listitem>
|
---|
| 640 | </varlistentry>
|
---|
| 641 |
|
---|
| 642 | <varlistentry id="libnsl">
|
---|
| 643 | <term><filename class="libraryfile">libnsl</filename></term>
|
---|
| 644 | <listitem>
|
---|
| 645 | <para>The network services library</para>
|
---|
| 646 | <indexterm zone="ch-system-glibc libnsl"><primary sortas="c-libnsl">libnsl</primary></indexterm>
|
---|
| 647 | </listitem>
|
---|
| 648 | </varlistentry>
|
---|
| 649 |
|
---|
| 650 | <varlistentry id="libnss">
|
---|
| 651 | <term><filename class="libraryfile">libnss</filename></term>
|
---|
| 652 | <listitem>
|
---|
| 653 | <para>The Name Service Switch libraries,
|
---|
| 654 | containing functions for resolving host names, user names, group names,
|
---|
[bc2136e] | 655 | aliases, services, protocols, etc.</para>
|
---|
[81fd230] | 656 | <indexterm zone="ch-system-glibc libnss"><primary sortas="c-libnss">libnss</primary></indexterm>
|
---|
| 657 | </listitem>
|
---|
| 658 | </varlistentry>
|
---|
| 659 |
|
---|
| 660 | <varlistentry id="libpcprofile">
|
---|
| 661 | <term><filename class="libraryfile">libpcprofile</filename></term>
|
---|
| 662 | <listitem>
|
---|
| 663 | <para>Contains profiling functions used
|
---|
| 664 | to track the amount of CPU time spent in specific source code lines</para>
|
---|
| 665 | <indexterm zone="ch-system-glibc libpcprofile"><primary sortas="c-libpcprofile">libpcprofile</primary></indexterm>
|
---|
| 666 | </listitem>
|
---|
| 667 | </varlistentry>
|
---|
| 668 |
|
---|
| 669 | <varlistentry id="libpthread">
|
---|
| 670 | <term><filename class="libraryfile">libpthread</filename></term>
|
---|
| 671 | <listitem>
|
---|
| 672 | <para>The POSIX threads library</para>
|
---|
| 673 | <indexterm zone="ch-system-glibc libpthread"><primary sortas="c-libpthread">libpthread</primary></indexterm>
|
---|
| 674 | </listitem>
|
---|
| 675 | </varlistentry>
|
---|
| 676 |
|
---|
| 677 | <varlistentry id="libresolv">
|
---|
| 678 | <term><filename class="libraryfile">libresolv</filename></term>
|
---|
| 679 | <listitem>
|
---|
| 680 | <para>Contains functions for creating,
|
---|
| 681 | sending, and interpreting packets to the Internet domain name servers</para>
|
---|
| 682 | <indexterm zone="ch-system-glibc libresolv"><primary sortas="c-libresolv">libresolv</primary></indexterm>
|
---|
| 683 | </listitem>
|
---|
| 684 | </varlistentry>
|
---|
| 685 |
|
---|
| 686 | <varlistentry id="librpcsvc">
|
---|
| 687 | <term><filename class="libraryfile">librpcsvc</filename></term>
|
---|
| 688 | <listitem>
|
---|
| 689 | <para>Contains functions providing miscellaneous RPC services</para>
|
---|
| 690 | <indexterm zone="ch-system-glibc librpcsvc"><primary sortas="c-librpcsvc">librpcsvc</primary></indexterm>
|
---|
| 691 | </listitem>
|
---|
| 692 | </varlistentry>
|
---|
| 693 |
|
---|
| 694 | <varlistentry id="librt">
|
---|
| 695 | <term><filename class="libraryfile">librt</filename></term>
|
---|
| 696 | <listitem>
|
---|
| 697 | <para>Contains functions providing most of the
|
---|
| 698 | interfaces specified by the POSIX.1b Realtime Extension</para>
|
---|
| 699 | <indexterm zone="ch-system-glibc librt"><primary sortas="c-librt">librt</primary></indexterm>
|
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| 700 | </listitem>
|
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| 701 | </varlistentry>
|
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| 702 |
|
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| 703 | <varlistentry id="libthread_db">
|
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| 704 | <term><filename class="libraryfile">libthread_db</filename></term>
|
---|
| 705 | <listitem>
|
---|
| 706 | <para>Contains functions useful for
|
---|
| 707 | building debuggers for multi-threaded programs</para>
|
---|
| 708 | <indexterm zone="ch-system-glibc libthread_db"><primary sortas="c-libthread_db">libthread_db</primary></indexterm>
|
---|
| 709 | </listitem>
|
---|
| 710 | </varlistentry>
|
---|
| 711 |
|
---|
| 712 | <varlistentry id="libutil">
|
---|
| 713 | <term><filename class="libraryfile">libutil</filename></term>
|
---|
| 714 | <listitem>
|
---|
| 715 | <para>Contains code for <quote>standard</quote> functions used in many different Unix utilities</para>
|
---|
| 716 | <indexterm zone="ch-system-glibc libutil"><primary sortas="c-libutil">libutil</primary></indexterm>
|
---|
| 717 | </listitem>
|
---|
| 718 | </varlistentry>
|
---|
| 719 | </variablelist>
|
---|
[673b0d8] | 720 |
|
---|
| 721 | </sect2>
|
---|
| 722 |
|
---|
| 723 | </sect1>
|
---|
[81fd230] | 724 |
|
---|