[3f8be484] | 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 | %general-entities; |
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| 6 | ]> |
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| 7 | |
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| 8 | <sect1 id="ch-system-glibc" role="wrap"> |
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| 9 | <?dbhtml filename="glibc.html"?> |
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| 10 | |
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| 11 | <title>Glibc-&glibc-version;</title> |
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| 12 | |
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| 13 | <indexterm zone="ch-system-glibc"> |
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| 14 | <primary sortas="a-Glibc">Glibc</primary> |
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| 15 | </indexterm> |
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| 16 | |
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| 17 | <sect2 role="package"> |
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| 18 | <title/> |
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| 19 | |
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| 20 | <para>The Glibc package contains the main C library. This library provides |
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| 21 | the basic routines for allocating memory, searching directories, opening and |
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| 22 | closing files, reading and writing files, string handling, pattern matching, |
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| 23 | arithmetic, and so on.</para> |
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| 24 | |
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| 25 | </sect2> |
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| 26 | |
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| 27 | <sect2 role="installation"> |
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| 28 | <title>Installation of Glibc</title> |
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| 29 | |
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| 30 | <note os="z"> |
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| 31 | <para>Some packages outside of LFS suggest installing GNU libiconv in |
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| 32 | order to translate data from one encoding to another. The project's |
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| 33 | home page (<ulink url="http://www.gnu.org/software/libiconv/"/>) says |
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| 34 | <quote>This library provides an <function>iconv()</function> |
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| 35 | implementation, for use on systems which don't have one, or whose |
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| 36 | implementation cannot convert from/to Unicode.</quote> Glibc provides |
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| 37 | an <function>iconv()</function> implementation and can convert from/to |
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| 38 | Unicode, therefore libiconv is not required on an LFS system.</para> |
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| 39 | </note> |
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| 40 | |
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| 41 | <para os="b">The Glibc build system is self-contained and will install |
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| 42 | perfectly, even though the compiler specs file and linker are still |
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| 43 | pointing at <filename class="directory">/tools</filename>. The specs |
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| 44 | and linker cannot be adjusted before the Glibc install because the |
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| 45 | Glibc autoconf tests would give false results and defeat the goal |
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| 46 | of achieving a clean build.</para> |
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| 47 | |
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[39139e4] | 48 | <para os="c">The following patch fixes an issue that can |
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| 49 | cause <command>localdef</command> to segfault:</para> |
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[3f8be484] | 50 | |
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| 51 | <screen os="d"><userinput>patch -Np1 -i ../&glibc-localedef_segfault-patch;</userinput></screen> |
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[82f7fed] | 52 | |
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[a33dbaa] | 53 | <para os="s1">The following sed fixes a build issue with Glibc. This |
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| 54 | will prevent nscd from trying to link to libraries that don't exist:</para> |
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[7d61e92] | 55 | |
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[39139e4] | 56 | <screen os="s2"><userinput>cp -v nscd/Makefile{,.orig} |
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[27beca52] | 57 | sed -e "/nscd_stat.o: sysincludes = # nothing/d" nscd/Makefile.orig > \ |
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[39139e4] | 58 | nscd/Makefile</userinput></screen> |
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[7d61e92] | 59 | |
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[3f8be484] | 60 | <para os="e">The Glibc documentation recommends building Glibc outside of the |
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| 61 | source directory in a dedicated build directory:</para> |
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| 62 | |
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[94e6142] | 63 | <screen os="f"><userinput>mkdir -v ../glibc-build |
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[3f8be484] | 64 | cd ../glibc-build</userinput></screen> |
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| 65 | |
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| 66 | <para os="g">Prepare Glibc for compilation:</para> |
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| 67 | |
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| 68 | <screen os="h"><userinput>../glibc-&glibc-version;/configure --prefix=/usr \ |
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| 69 | --disable-profile --enable-add-ons --enable-kernel=2.6.0 \ |
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| 70 | --libexecdir=/usr/lib/glibc</userinput></screen> |
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| 71 | |
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| 72 | <variablelist os="i"> |
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| 73 | <title>The meaning of the new configure option:</title> |
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| 74 | |
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| 75 | <varlistentry> |
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| 76 | <term><parameter>--libexecdir=/usr/lib/glibc</parameter></term> |
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| 77 | <listitem> |
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| 78 | <para>This changes the location of the <command>pt_chown</command> |
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| 79 | program from its default of <filename |
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| 80 | class="directory">/usr/libexec</filename> to <filename |
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| 81 | class="directory">/usr/lib/glibc</filename>.</para> |
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| 82 | </listitem> |
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| 83 | </varlistentry> |
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| 84 | </variablelist> |
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| 85 | |
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| 86 | <para os="j">Compile the package:</para> |
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| 87 | |
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| 88 | <screen os="k"><userinput>make</userinput></screen> |
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| 89 | |
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| 90 | <important os="l"> |
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[121c48a] | 91 | <para>The test suite for Glibc is considered critical. |
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[3f8be484] | 92 | Do not skip it under any circumstance.</para> |
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| 93 | </important> |
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| 94 | |
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| 95 | <para os="m">Test the results:</para> |
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| 96 | |
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| 97 | <!-- items n,o,p no longer the master, use x86_64 which has no failures --> |
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| 98 | |
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| 99 | <screen os="n"><userinput>make -k check >glibc-check-log 2>&1 ; grep Error glibc-check-log</userinput></screen> |
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| 100 | |
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| 101 | <para os="o">The Glibc test suite is highly dependent on certain functions of |
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| 102 | the host system, in particular the kernel. In general, the Glibc test |
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| 103 | suite is always expected to pass. However, in certain circumstances, |
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| 104 | some failures are unavoidable. This is a list of the most common |
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| 105 | issues:</para> |
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| 106 | |
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| 107 | <itemizedlist os="p"> |
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| 108 | <listitem> |
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| 109 | <para>The <emphasis>math</emphasis> tests, at least on i686, fail in |
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[da9f193] | 110 | the <emphasis>test-double</emphasis> and <emphasis>test-idouble</emphasis> |
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| 111 | tests with gcc-&gcc-version;, the <command>grep</command> command will |
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| 112 | also report an expected (ignored) failure in <emphasis>posix/annexc |
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| 113 | </emphasis>. These two failures in the math tests appear to be harmless. |
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| 114 | The math tests may also fail on systems where the CPU is not a relatively |
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| 115 | new genuine Intel or authentic AMD. Certain optimization settings are |
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| 116 | also known to be a factor here.</para> |
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[3f8be484] | 117 | </listitem> |
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| 118 | <listitem> |
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| 119 | <para>The <emphasis>gettext</emphasis> test sometimes fails due to |
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| 120 | host system issues. The exact reasons are not yet clear.</para> |
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| 121 | </listitem> |
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| 122 | <listitem> |
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| 123 | <para>If you have mounted the LFS partition with the |
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| 124 | <parameter>noatime</parameter> option, the <emphasis>atime</emphasis> test |
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| 125 | will fail. As mentioned in <xref linkend="ch-partitioning-mounting"/>, |
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| 126 | do not use the <parameter>noatime</parameter> option while building |
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| 127 | LFS.</para> |
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| 128 | </listitem> |
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| 129 | <listitem> |
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| 130 | <para>When running on older and slower hardware, some tests |
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| 131 | can fail because of test timeouts being exceeded.</para> |
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| 132 | </listitem> |
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| 133 | </itemizedlist> |
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| 134 | |
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| 135 | <para os="q">Though it is a harmless message, the install stage of Glibc will |
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| 136 | complain about the absence of <filename>/etc/ld.so.conf</filename>. |
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| 137 | Prevent this warning with:</para> |
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| 138 | |
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| 139 | <screen os="r"><userinput>touch /etc/ld.so.conf</userinput></screen> |
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| 140 | |
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| 141 | <para os="s">Install the package:</para> |
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| 142 | |
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| 143 | <screen os="t"><userinput>make install</userinput></screen> |
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| 144 | |
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| 145 | </sect2> |
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| 146 | |
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| 147 | <sect2 id="i18n-glibc" role="configuration"> |
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| 148 | <title>Internationalization</title> |
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| 149 | |
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| 150 | <para>The locales that can make the system respond in a different |
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[5a321cb] | 151 | language were not installed by the above command. Install them |
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[3f8be484] | 152 | with:</para> |
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| 153 | |
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| 154 | <screen><userinput>make localedata/install-locales</userinput></screen> |
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| 155 | |
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| 156 | <para>To save time, an alternative to running the previous command (which |
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[643f8be] | 157 | generates and installs every locale listed in the |
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| 158 | glibc-&glibc-version;/localedata/SUPPORTED file) is to install only |
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[3f8be484] | 159 | those locales that are wanted and needed. This can be achieved by using |
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| 160 | the <command>localedef</command> command. Information on this command is |
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| 161 | located in the <filename>INSTALL</filename> file in the Glibc source. |
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| 162 | However, there are a number of locales that are essential in order for the |
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| 163 | tests of future packages to pass, in particular, the |
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| 164 | <emphasis>libstdc++</emphasis> tests from GCC. The following instructions, |
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| 165 | instead of the <parameter>install-locales</parameter> target used above, |
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| 166 | will install the minimum set of locales necessary for the tests to run |
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| 167 | successfully:</para> |
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| 168 | |
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[3a3e135] | 169 | <screen role="nodump"><userinput>mkdir -pv /usr/lib/locale |
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[3f8be484] | 170 | localedef -i de_DE -f ISO-8859-1 de_DE |
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| 171 | localedef -i de_DE@euro -f ISO-8859-15 de_DE@euro |
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| 172 | localedef -i en_HK -f ISO-8859-1 en_HK |
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| 173 | localedef -i en_PH -f ISO-8859-1 en_PH |
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| 174 | localedef -i en_US -f ISO-8859-1 en_US |
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| 175 | localedef -i es_MX -f ISO-8859-1 es_MX |
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| 176 | localedef -i fa_IR -f UTF-8 fa_IR |
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| 177 | localedef -i fr_FR -f ISO-8859-1 fr_FR |
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| 178 | localedef -i fr_FR@euro -f ISO-8859-15 fr_FR@euro |
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| 179 | localedef -i it_IT -f ISO-8859-1 it_IT |
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| 180 | localedef -i ja_JP -f EUC-JP ja_JP</userinput></screen> |
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| 181 | |
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| 182 | <para>Some locales installed by the <command>make |
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| 183 | localedata/install-locales</command> command above are not properly |
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| 184 | supported by some applications that are in the LFS and BLFS books. Because |
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| 185 | of the various problems that arise due to application programmers making |
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| 186 | assumptions that break in such locales, LFS should not be used in locales |
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| 187 | that utilize multibyte character sets (including UTF-8) or right-to-left |
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| 188 | writing order. Numerous unofficial and unstable patches are required to |
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| 189 | fix these problems, and it has been decided by the LFS developers not to |
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[643f8be] | 190 | support such complex locales at this time. This applies to the ja_JP and |
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| 191 | fa_IR locales as well—they have been installed only for GCC and |
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| 192 | Gettext tests to pass, and the <command>watch</command> program (part of |
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| 193 | the Procps package) does not work properly in them. Various attempts to |
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| 194 | circumvent these restrictions are documented in internationalization-related |
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| 195 | hints.</para> |
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[3f8be484] | 196 | |
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| 197 | </sect2> |
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| 198 | |
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| 199 | <sect2 id="conf-glibc" role="configuration"> |
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| 200 | <title>Configuring Glibc</title> |
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| 201 | |
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| 202 | <indexterm zone="conf-glibc"> |
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| 203 | <primary sortas="e-/etc/nsswitch.conf">/etc/nsswitch.conf</primary> |
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| 204 | </indexterm> |
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| 205 | |
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| 206 | <indexterm zone="conf-glibc"> |
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| 207 | <primary sortas="e-/etc/localtime">/etc/localtime</primary> |
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| 208 | </indexterm> |
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| 209 | |
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| 210 | <para>The <filename>/etc/nsswitch.conf</filename> file needs to be created |
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| 211 | because, although Glibc provides defaults when this file is missing or |
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| 212 | corrupt, the Glibc defaults do not work well in a networked environment. |
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| 213 | The time zone also needs to be configured.</para> |
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| 214 | |
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| 215 | <para>Create a new file <filename>/etc/nsswitch.conf</filename> by running |
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| 216 | the following:</para> |
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| 217 | |
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| 218 | <screen><userinput>cat > /etc/nsswitch.conf << "EOF" |
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| 219 | <literal># Begin /etc/nsswitch.conf |
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| 220 | |
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| 221 | passwd: files |
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| 222 | group: files |
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| 223 | shadow: files |
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| 224 | |
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| 225 | hosts: files dns |
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| 226 | networks: files |
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| 227 | |
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| 228 | protocols: files |
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| 229 | services: files |
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| 230 | ethers: files |
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| 231 | rpc: files |
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| 232 | |
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| 233 | # End /etc/nsswitch.conf</literal> |
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| 234 | EOF</userinput></screen> |
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| 235 | |
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| 236 | <para>To determine the local time zone, run the following script:</para> |
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| 237 | |
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[0f3854e] | 238 | <screen role="nodump"><userinput>tzselect</userinput></screen> |
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[3f8be484] | 239 | |
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| 240 | <para>After answering a few questions about the location, the script will |
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| 241 | output the name of the time zone (e.g., <emphasis>EST5EDT</emphasis> or |
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| 242 | <emphasis>Canada/Eastern</emphasis>). Then create the |
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| 243 | <filename>/etc/localtime</filename> file by running:</para> |
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| 244 | |
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[94e6142] | 245 | <screen><userinput>cp -v --remove-destination /usr/share/zoneinfo/<replaceable>[xxx]</replaceable> \ |
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[3f8be484] | 246 | /etc/localtime</userinput></screen> |
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| 247 | |
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| 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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| 250 | |
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| 251 | <variablelist> |
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| 252 | <title>The meaning of the cp option:</title> |
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| 253 | |
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| 254 | <varlistentry> |
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| 255 | <term><parameter>--remove-destination</parameter></term> |
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| 256 | <listitem> |
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| 257 | <para>This is needed to force removal of the already existing symbolic |
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| 258 | link. The reason for copying the file instead of using a symlink is to |
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| 259 | cover the situation where <filename class="directory">/usr</filename> |
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| 260 | is on a separate partition. This could be important when booted into |
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| 261 | single user mode.</para> |
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| 262 | </listitem> |
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| 263 | </varlistentry> |
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| 264 | </variablelist> |
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| 265 | |
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| 266 | </sect2> |
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| 267 | |
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| 268 | <sect2 id="conf-ld" role="configuration"> |
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[0b637f1] | 269 | <title>Configuring The Dynamic Loader</title> |
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[3f8be484] | 270 | |
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| 271 | <indexterm zone="conf-ld"> |
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| 272 | <primary sortas="e-/etc/ld.so.conf">/etc/ld.so.conf</primary> |
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| 273 | </indexterm> |
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| 274 | |
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| 275 | <para>By default, the dynamic loader (<filename |
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| 276 | class="libraryfile">/lib/ld-linux.so.2</filename>) searches through |
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| 277 | <filename class="directory">/lib</filename> and <filename |
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| 278 | class="directory">/usr/lib</filename> for dynamic libraries that are |
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| 279 | needed by programs as they are run. However, if there are libraries in |
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| 280 | directories other than <filename class="directory">/lib</filename> and |
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| 281 | <filename class="directory">/usr/lib</filename>, these need to be |
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| 282 | added to the <filename>/etc/ld.so.conf</filename> file in order |
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| 283 | for the dynamic loader to find them. Two directories that are commonly |
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| 284 | known to contain additional libraries are <filename |
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| 285 | class="directory">/usr/local/lib</filename> and <filename |
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| 286 | class="directory">/opt/lib</filename>, so add those directories to the |
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| 287 | dynamic loader's search path.</para> |
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| 288 | |
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| 289 | <para>Create a new file <filename>/etc/ld.so.conf</filename> by running the |
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| 290 | following:</para> |
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| 291 | |
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| 292 | <screen><userinput>cat > /etc/ld.so.conf << "EOF" |
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| 293 | <literal># Begin /etc/ld.so.conf |
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| 294 | |
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| 295 | /usr/local/lib |
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| 296 | /opt/lib |
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| 297 | |
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| 298 | # End /etc/ld.so.conf</literal> |
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| 299 | EOF</userinput></screen> |
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| 300 | |
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| 301 | </sect2> |
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| 302 | |
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| 303 | <sect2 id="contents-glibc" role="content"> |
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| 304 | <title>Contents of Glibc</title> |
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| 305 | |
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| 306 | <segmentedlist> |
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| 307 | <segtitle>Installed programs</segtitle> |
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| 308 | <segtitle>Installed libraries</segtitle> |
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| 309 | |
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| 310 | <seglistitem> |
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| 311 | <seg>catchsegv, gencat, getconf, getent, iconv, iconvconfig, ldconfig, |
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[1e91bbd] | 312 | ldd, lddlibc4, locale, localedef, mtrace, nscd, |
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[3f8be484] | 313 | pcprofiledump, pt_chown, rpcgen, rpcinfo, sln, sprof, tzselect, xtrace, |
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| 314 | zdump, and zic</seg> |
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| 315 | <seg>ld.so, libBrokenLocale.[a,so], libSegFault.so, libanl.[a,so], |
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| 316 | libbsd-compat.a, libc.[a,so], libcrypt.[a,so], libdl.[a,so], libg.a, |
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| 317 | libieee.a, libm.[a,so], libmcheck.a, libmemusage.so, libnsl.a, |
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| 318 | libnss_compat.so, libnss_dns.so, libnss_files.so, libnss_hesiod.so, |
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| 319 | libnss_nis.so, libnss_nisplus.so, libpcprofile.so, libpthread.[a,so], |
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| 320 | libresolv.[a,so], librpcsvc.a, librt.[a,so], libthread_db.so, and |
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| 321 | libutil.[a,so]</seg> |
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| 322 | </seglistitem> |
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| 323 | </segmentedlist> |
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| 324 | |
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| 325 | <variablelist> |
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| 326 | <bridgehead renderas="sect3">Short Descriptions</bridgehead> |
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| 327 | <?dbfo list-presentation="list"?> |
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| 328 | <?dbhtml list-presentation="table"?> |
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| 329 | |
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| 330 | <varlistentry id="catchsegv"> |
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| 331 | <term><command>catchsegv</command></term> |
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| 332 | <listitem> |
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| 333 | <para>Can be used to create a stack trace when a program |
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| 334 | terminates with a segmentation fault</para> |
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| 335 | <indexterm zone="ch-system-glibc catchsegv"> |
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| 336 | <primary sortas="b-catchsegv">catchsegv</primary> |
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| 337 | </indexterm> |
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| 338 | </listitem> |
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| 339 | </varlistentry> |
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| 340 | |
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| 341 | <varlistentry id="gencat"> |
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| 342 | <term><command>gencat</command></term> |
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| 343 | <listitem> |
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| 344 | <para>Generates message catalogues</para> |
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| 345 | <indexterm zone="ch-system-glibc gencat"> |
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| 346 | <primary sortas="b-gencat">gencat</primary> |
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| 347 | </indexterm> |
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| 348 | </listitem> |
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| 349 | </varlistentry> |
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| 350 | |
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| 351 | <varlistentry id="getconf"> |
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| 352 | <term><command>getconf</command></term> |
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| 353 | <listitem> |
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| 354 | <para>Displays the system configuration values for file system specific |
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| 355 | variables</para> |
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| 356 | <indexterm zone="ch-system-glibc getconf"> |
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| 357 | <primary sortas="b-getconf">getconf</primary> |
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| 358 | </indexterm> |
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| 359 | </listitem> |
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| 360 | </varlistentry> |
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| 361 | |
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| 362 | <varlistentry id="getent"> |
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| 363 | <term><command>getent</command></term> |
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| 364 | <listitem> |
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| 365 | <para>Gets entries from an administrative database</para> |
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| 366 | <indexterm zone="ch-system-glibc getent"> |
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| 367 | <primary sortas="b-getent">getent</primary> |
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| 368 | </indexterm> |
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| 369 | </listitem> |
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| 370 | </varlistentry> |
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| 371 | |
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| 372 | <varlistentry id="iconv"> |
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| 373 | <term><command>iconv</command></term> |
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| 374 | <listitem> |
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| 375 | <para>Performs character set conversion</para> |
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| 376 | <indexterm zone="ch-system-glibc iconv"> |
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| 377 | <primary sortas="b-iconv">iconv</primary> |
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| 378 | </indexterm> |
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| 379 | </listitem> |
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| 380 | </varlistentry> |
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| 381 | |
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| 382 | <varlistentry id="iconvconfig"> |
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| 383 | <term><command>iconvconfig</command></term> |
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| 384 | <listitem> |
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| 385 | <para>Creates fastloading <command>iconv</command> module configuration |
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| 386 | files</para> |
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| 387 | <indexterm zone="ch-system-glibc iconvconfig"> |
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| 388 | <primary sortas="b-iconvconfig">iconvconfig</primary> |
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| 389 | </indexterm> |
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| 390 | </listitem> |
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| 391 | </varlistentry> |
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| 392 | |
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| 393 | <varlistentry id="ldconfig"> |
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| 394 | <term><command>ldconfig</command></term> |
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| 395 | <listitem> |
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| 396 | <para>Configures the dynamic linker runtime bindings</para> |
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| 397 | <indexterm zone="ch-system-glibc ldconfig"> |
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| 398 | <primary sortas="b-ldconfig">ldconfig</primary> |
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| 399 | </indexterm> |
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| 400 | </listitem> |
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| 401 | </varlistentry> |
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| 402 | |
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| 403 | <varlistentry id="ldd"> |
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| 404 | <term><command>ldd</command></term> |
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| 405 | <listitem> |
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| 406 | <para>Reports which shared libraries are required |
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| 407 | by each given program or shared library</para> |
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| 408 | <indexterm zone="ch-system-glibc ldd"> |
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| 409 | <primary sortas="b-ldd">ldd</primary> |
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| 410 | </indexterm> |
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| 411 | </listitem> |
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| 412 | </varlistentry> |
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| 413 | |
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| 414 | <varlistentry id="lddlibc4"> |
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| 415 | <term><command>lddlibc4</command></term> |
---|
| 416 | <listitem> |
---|
| 417 | <para>Assists <command>ldd</command> with object files</para> |
---|
| 418 | <indexterm zone="ch-system-glibc lddlibc4"> |
---|
| 419 | <primary sortas="b-lddlibc4">lddlibc4</primary> |
---|
| 420 | </indexterm> |
---|
| 421 | </listitem> |
---|
| 422 | </varlistentry> |
---|
| 423 | |
---|
| 424 | <varlistentry id="locale"> |
---|
| 425 | <term><command>locale</command></term> |
---|
| 426 | <listitem> |
---|
| 427 | <para>Tells the compiler to enable or disable the use of POSIX locales |
---|
| 428 | for built-in operations</para> |
---|
| 429 | <indexterm zone="ch-system-glibc locale"> |
---|
| 430 | <primary sortas="b-locale">locale</primary> |
---|
| 431 | </indexterm> |
---|
| 432 | </listitem> |
---|
| 433 | </varlistentry> |
---|
| 434 | |
---|
| 435 | <varlistentry id="localedef"> |
---|
| 436 | <term><command>localedef</command></term> |
---|
| 437 | <listitem> |
---|
| 438 | <para>Compiles locale specifications</para> |
---|
| 439 | <indexterm zone="ch-system-glibc localedef"> |
---|
| 440 | <primary sortas="b-localedef">localedef</primary> |
---|
| 441 | </indexterm> |
---|
| 442 | </listitem> |
---|
| 443 | </varlistentry> |
---|
| 444 | |
---|
| 445 | <varlistentry id="mtrace"> |
---|
| 446 | <term><command>mtrace</command></term> |
---|
| 447 | <listitem> |
---|
| 448 | <para>Reads and interprets a memory trace file and |
---|
| 449 | displays a summary in human-readable format</para> |
---|
| 450 | <indexterm zone="ch-system-glibc mtrace"> |
---|
| 451 | <primary sortas="b-mtrace">mtrace</primary> |
---|
| 452 | </indexterm> |
---|
| 453 | </listitem> |
---|
| 454 | </varlistentry> |
---|
| 455 | |
---|
| 456 | <varlistentry id="nscd"> |
---|
| 457 | <term><command>nscd</command></term> |
---|
| 458 | <listitem> |
---|
| 459 | <para>A daemon that provides a cache for the most common name |
---|
| 460 | service requests</para> |
---|
| 461 | <indexterm zone="ch-system-glibc nscd"> |
---|
| 462 | <primary sortas="b-nscd">nscd</primary> |
---|
| 463 | </indexterm> |
---|
| 464 | </listitem> |
---|
| 465 | </varlistentry> |
---|
| 466 | |
---|
| 467 | <varlistentry id="pcprofiledump"> |
---|
| 468 | <term><command>pcprofiledump</command></term> |
---|
| 469 | <listitem> |
---|
| 470 | <para>Dumps information generated by PC profiling</para> |
---|
| 471 | <indexterm zone="ch-system-glibc pcprofiledump"> |
---|
| 472 | <primary sortas="b-pcprofiledump">pcprofiledump</primary> |
---|
| 473 | </indexterm> |
---|
| 474 | </listitem> |
---|
| 475 | </varlistentry> |
---|
| 476 | |
---|
| 477 | <varlistentry id="pt_chown"> |
---|
| 478 | <term><command>pt_chown</command></term> |
---|
| 479 | <listitem> |
---|
| 480 | <para>A helper program for <command>grantpt</command> to set the owner, |
---|
| 481 | group and access permissions of a slave pseudo terminal</para> |
---|
| 482 | <indexterm zone="ch-system-glibc pt_chown"> |
---|
| 483 | <primary sortas="b-pt_chown">pt_chown</primary> |
---|
| 484 | </indexterm> |
---|
| 485 | </listitem> |
---|
| 486 | </varlistentry> |
---|
| 487 | |
---|
| 488 | <varlistentry id="rpcgen"> |
---|
| 489 | <term><command>rpcgen</command></term> |
---|
| 490 | <listitem> |
---|
| 491 | <para>Generates C code to implement the Remote Procecure Call (RPC) |
---|
| 492 | protocol</para> |
---|
| 493 | <indexterm zone="ch-system-glibc rpcgen"> |
---|
| 494 | <primary sortas="b-rpcgen">rpcgen</primary> |
---|
| 495 | </indexterm> |
---|
| 496 | </listitem> |
---|
| 497 | </varlistentry> |
---|
| 498 | |
---|
| 499 | <varlistentry id="rpcinfo"> |
---|
| 500 | <term><command>rpcinfo</command></term> |
---|
| 501 | <listitem> |
---|
| 502 | <para>Makes an RPC call to an RPC server</para> |
---|
| 503 | <indexterm zone="ch-system-glibc rpcinfo"> |
---|
| 504 | <primary sortas="b-rpcinfo">rpcinfo</primary> |
---|
| 505 | </indexterm> |
---|
| 506 | </listitem> |
---|
| 507 | </varlistentry> |
---|
| 508 | |
---|
| 509 | <varlistentry id="sln"> |
---|
| 510 | <term><command>sln</command></term> |
---|
| 511 | <listitem> |
---|
| 512 | <para>A statically linked <command>ln</command> program</para> |
---|
| 513 | <indexterm zone="ch-system-glibc sln"> |
---|
| 514 | <primary sortas="b-sln">sln</primary> |
---|
| 515 | </indexterm> |
---|
| 516 | </listitem> |
---|
| 517 | </varlistentry> |
---|
| 518 | |
---|
| 519 | <varlistentry id="sprof"> |
---|
| 520 | <term><command>sprof</command></term> |
---|
| 521 | <listitem> |
---|
| 522 | <para>Reads and displays shared object profiling data</para> |
---|
| 523 | <indexterm zone="ch-system-glibc sprof"> |
---|
| 524 | <primary sortas="b-sprof">sprof</primary> |
---|
| 525 | </indexterm> |
---|
| 526 | </listitem> |
---|
| 527 | </varlistentry> |
---|
| 528 | |
---|
| 529 | <varlistentry id="tzselect"> |
---|
| 530 | <term><command>tzselect</command></term> |
---|
| 531 | <listitem> |
---|
| 532 | <para>Asks the user about the location of the |
---|
| 533 | system and reports the corresponding time zone description</para> |
---|
| 534 | <indexterm zone="ch-system-glibc tzselect"> |
---|
| 535 | <primary sortas="b-tzselect">tzselect</primary> |
---|
| 536 | </indexterm> |
---|
| 537 | </listitem> |
---|
| 538 | </varlistentry> |
---|
| 539 | |
---|
| 540 | <varlistentry id="xtrace"> |
---|
| 541 | <term><command>xtrace</command></term> |
---|
| 542 | <listitem> |
---|
| 543 | <para>Traces the execution of a program by |
---|
| 544 | printing the currently executed function</para> |
---|
| 545 | <indexterm zone="ch-system-glibc xtrace"> |
---|
| 546 | <primary sortas="b-xtrace">xtrace</primary> |
---|
| 547 | </indexterm> |
---|
| 548 | </listitem> |
---|
| 549 | </varlistentry> |
---|
| 550 | |
---|
| 551 | <varlistentry id="zdump"> |
---|
| 552 | <term><command>zdump</command></term> |
---|
| 553 | <listitem> |
---|
| 554 | <para>The time zone dumper</para> |
---|
| 555 | <indexterm zone="ch-system-glibc zdump"> |
---|
| 556 | <primary sortas="b-zdump">zdump</primary> |
---|
| 557 | </indexterm> |
---|
| 558 | </listitem> |
---|
| 559 | </varlistentry> |
---|
| 560 | |
---|
| 561 | <varlistentry id="zic"> |
---|
| 562 | <term><command>zic</command></term> |
---|
| 563 | <listitem> |
---|
| 564 | <para>The time zone compiler</para> |
---|
| 565 | <indexterm zone="ch-system-glibc zic"> |
---|
| 566 | <primary sortas="b-zic">zic</primary> |
---|
| 567 | </indexterm> |
---|
| 568 | </listitem> |
---|
| 569 | </varlistentry> |
---|
| 570 | |
---|
| 571 | <varlistentry id="ld.so"> |
---|
| 572 | <term><filename class="libraryfile">ld.so</filename></term> |
---|
| 573 | <listitem> |
---|
| 574 | <para>The helper program for shared library executables</para> |
---|
| 575 | <indexterm zone="ch-system-glibc ld.so"> |
---|
| 576 | <primary sortas="c-ld.so">ld.so</primary> |
---|
| 577 | </indexterm> |
---|
| 578 | </listitem> |
---|
| 579 | </varlistentry> |
---|
| 580 | |
---|
| 581 | <varlistentry id="libBrokenLocale"> |
---|
| 582 | <term><filename class="libraryfile">libBrokenLocale</filename></term> |
---|
| 583 | <listitem> |
---|
| 584 | <para>Used by programs, such as Mozilla, to solve broken locales</para> |
---|
| 585 | <indexterm zone="ch-system-glibc libBrokenLocale"> |
---|
| 586 | <primary sortas="c-libBrokenLocale">libBrokenLocale</primary> |
---|
| 587 | </indexterm> |
---|
| 588 | </listitem> |
---|
| 589 | </varlistentry> |
---|
| 590 | |
---|
| 591 | <varlistentry id="libSegFault"> |
---|
| 592 | <term><filename class="libraryfile">libSegFault</filename></term> |
---|
| 593 | <listitem> |
---|
| 594 | <para>The segmentation fault signal handler</para> |
---|
| 595 | <indexterm zone="ch-system-glibc libSegFault"> |
---|
| 596 | <primary sortas="c-libSegFault">libSegFault</primary> |
---|
| 597 | </indexterm> |
---|
| 598 | </listitem> |
---|
| 599 | </varlistentry> |
---|
| 600 | |
---|
| 601 | <varlistentry id="libanl"> |
---|
| 602 | <term><filename class="libraryfile">libanl</filename></term> |
---|
| 603 | <listitem> |
---|
| 604 | <para>An asynchronous name lookup library</para> |
---|
| 605 | <indexterm zone="ch-system-glibc libanl"> |
---|
| 606 | <primary sortas="c-libanl">libanl</primary> |
---|
| 607 | </indexterm> |
---|
| 608 | </listitem> |
---|
| 609 | </varlistentry> |
---|
| 610 | |
---|
| 611 | <varlistentry id="libbsd-compat"> |
---|
| 612 | <term><filename class="libraryfile">libbsd-compat</filename></term> |
---|
| 613 | <listitem> |
---|
| 614 | <para>Provides the portability needed |
---|
| 615 | in order to run certain Berkey Software Distribution (BSD) programs |
---|
| 616 | under Linux</para> |
---|
| 617 | <indexterm zone="ch-system-glibc libbsd-compat"> |
---|
| 618 | <primary sortas="c-libbsd-compat">libbsd-compat</primary> |
---|
| 619 | </indexterm> |
---|
| 620 | </listitem> |
---|
| 621 | </varlistentry> |
---|
| 622 | |
---|
| 623 | <varlistentry id="libc"> |
---|
| 624 | <term><filename class="libraryfile">libc</filename></term> |
---|
| 625 | <listitem> |
---|
| 626 | <para>The main C library</para> |
---|
| 627 | <indexterm zone="ch-system-glibc libc"> |
---|
| 628 | <primary sortas="c-libc">libc</primary> |
---|
| 629 | </indexterm> |
---|
| 630 | </listitem> |
---|
| 631 | </varlistentry> |
---|
| 632 | |
---|
| 633 | <varlistentry id="libcrypt"> |
---|
| 634 | <term><filename class="libraryfile">libcrypt</filename></term> |
---|
| 635 | <listitem> |
---|
| 636 | <para>The cryptography library</para> |
---|
| 637 | <indexterm zone="ch-system-glibc libcrypt"> |
---|
| 638 | <primary sortas="c-libcrypt">libcrypt</primary> |
---|
| 639 | </indexterm> |
---|
| 640 | </listitem> |
---|
| 641 | </varlistentry> |
---|
| 642 | |
---|
| 643 | <varlistentry id="libdl"> |
---|
| 644 | <term><filename class="libraryfile">libdl</filename></term> |
---|
| 645 | <listitem> |
---|
| 646 | <para>The dynamic linking interface library</para> |
---|
| 647 | <indexterm zone="ch-system-glibc libdl"> |
---|
| 648 | <primary sortas="c-libdl">libdl</primary> |
---|
| 649 | </indexterm> |
---|
| 650 | </listitem> |
---|
| 651 | </varlistentry> |
---|
| 652 | |
---|
| 653 | <varlistentry id="libg"> |
---|
| 654 | <term><filename class="libraryfile">libg</filename></term> |
---|
| 655 | <listitem> |
---|
| 656 | <para>A runtime library for <command>g++</command></para> |
---|
| 657 | <indexterm zone="ch-system-glibc libg"> |
---|
| 658 | <primary sortas="c-libg">libg</primary> |
---|
| 659 | </indexterm> |
---|
| 660 | </listitem> |
---|
| 661 | </varlistentry> |
---|
| 662 | |
---|
| 663 | <varlistentry id="libieee"> |
---|
| 664 | <term><filename class="libraryfile">libieee</filename></term> |
---|
| 665 | <listitem> |
---|
| 666 | <para>The Institute of Electrical and Electronic Engineers (IEEE) |
---|
| 667 | floating point library</para> |
---|
| 668 | <indexterm zone="ch-system-glibc libieee"> |
---|
| 669 | <primary sortas="c-libieee">libieee</primary> |
---|
| 670 | </indexterm> |
---|
| 671 | </listitem> |
---|
| 672 | </varlistentry> |
---|
| 673 | |
---|
| 674 | <varlistentry id="libm"> |
---|
| 675 | <term><filename class="libraryfile">libm</filename></term> |
---|
| 676 | <listitem> |
---|
| 677 | <para>The mathematical library</para> |
---|
| 678 | <indexterm zone="ch-system-glibc libm"> |
---|
| 679 | <primary sortas="c-libm">libm</primary> |
---|
| 680 | </indexterm> |
---|
| 681 | </listitem> |
---|
| 682 | </varlistentry> |
---|
| 683 | |
---|
| 684 | <varlistentry id="libmcheck"> |
---|
| 685 | <term><filename class="libraryfile">libmcheck</filename></term> |
---|
| 686 | <listitem> |
---|
| 687 | <para>Contains code run at boot</para> |
---|
| 688 | <indexterm zone="ch-system-glibc libmcheck"> |
---|
| 689 | <primary sortas="c-libmcheck">libmcheck</primary> |
---|
| 690 | </indexterm> |
---|
| 691 | </listitem> |
---|
| 692 | </varlistentry> |
---|
| 693 | |
---|
| 694 | <varlistentry id="libmemusage"> |
---|
| 695 | <term><filename class="libraryfile">libmemusage</filename></term> |
---|
| 696 | <listitem> |
---|
| 697 | <para>Used by <command>memusage</command> to help collect |
---|
| 698 | information about the memory usage of a program</para> |
---|
| 699 | <indexterm zone="ch-system-glibc libmemusage"> |
---|
| 700 | <primary sortas="c-libmemusage">libmemusage</primary> |
---|
| 701 | </indexterm> |
---|
| 702 | </listitem> |
---|
| 703 | </varlistentry> |
---|
| 704 | |
---|
| 705 | <varlistentry id="libnsl"> |
---|
| 706 | <term><filename class="libraryfile">libnsl</filename></term> |
---|
| 707 | <listitem> |
---|
| 708 | <para>The network services library</para> |
---|
| 709 | <indexterm zone="ch-system-glibc libnsl"> |
---|
| 710 | <primary sortas="c-libnsl">libnsl</primary> |
---|
| 711 | </indexterm> |
---|
| 712 | </listitem> |
---|
| 713 | </varlistentry> |
---|
| 714 | |
---|
| 715 | <varlistentry id="libnss"> |
---|
| 716 | <term><filename class="libraryfile">libnss</filename></term> |
---|
| 717 | <listitem> |
---|
| 718 | <para>The Name Service Switch libraries, containing functions for |
---|
| 719 | resolving host names, user names, group names, aliases, services, |
---|
| 720 | protocols, etc.</para> |
---|
| 721 | <indexterm zone="ch-system-glibc libnss"> |
---|
| 722 | <primary sortas="c-libnss">libnss</primary> |
---|
| 723 | </indexterm> |
---|
| 724 | </listitem> |
---|
| 725 | </varlistentry> |
---|
| 726 | |
---|
| 727 | <varlistentry id="libpcprofile"> |
---|
| 728 | <term><filename class="libraryfile">libpcprofile</filename></term> |
---|
| 729 | <listitem> |
---|
| 730 | <para>Contains profiling functions used to track the amount of CPU |
---|
| 731 | time spent in specific source code lines</para> |
---|
| 732 | <indexterm zone="ch-system-glibc libpcprofile"> |
---|
| 733 | <primary sortas="c-libpcprofile">libpcprofile</primary> |
---|
| 734 | </indexterm> |
---|
| 735 | </listitem> |
---|
| 736 | </varlistentry> |
---|
| 737 | |
---|
| 738 | <varlistentry id="libpthread"> |
---|
| 739 | <term><filename class="libraryfile">libpthread</filename></term> |
---|
| 740 | <listitem> |
---|
| 741 | <para>The POSIX threads library</para> |
---|
| 742 | <indexterm zone="ch-system-glibc libpthread"> |
---|
| 743 | <primary sortas="c-libpthread">libpthread</primary> |
---|
| 744 | </indexterm> |
---|
| 745 | </listitem> |
---|
| 746 | </varlistentry> |
---|
| 747 | |
---|
| 748 | <varlistentry id="libresolv"> |
---|
| 749 | <term><filename class="libraryfile">libresolv</filename></term> |
---|
| 750 | <listitem> |
---|
| 751 | <para>Contains functions for creating, sending, and interpreting |
---|
| 752 | packets to the Internet domain name servers</para> |
---|
| 753 | <indexterm zone="ch-system-glibc libresolv"> |
---|
| 754 | <primary sortas="c-libresolv">libresolv</primary> |
---|
| 755 | </indexterm> |
---|
| 756 | </listitem> |
---|
| 757 | </varlistentry> |
---|
| 758 | |
---|
| 759 | <varlistentry id="librpcsvc"> |
---|
| 760 | <term><filename class="libraryfile">librpcsvc</filename></term> |
---|
| 761 | <listitem> |
---|
| 762 | <para>Contains functions providing miscellaneous RPC services</para> |
---|
| 763 | <indexterm zone="ch-system-glibc librpcsvc"> |
---|
| 764 | <primary sortas="c-librpcsvc">librpcsvc</primary> |
---|
| 765 | </indexterm> |
---|
| 766 | </listitem> |
---|
| 767 | </varlistentry> |
---|
| 768 | |
---|
| 769 | <varlistentry id="librt"> |
---|
| 770 | <term><filename class="libraryfile">librt</filename></term> |
---|
| 771 | <listitem> |
---|
| 772 | <para>Contains functions providing most of the interfaces specified by |
---|
| 773 | the POSIX.1b Realtime Extension</para> |
---|
| 774 | <indexterm zone="ch-system-glibc librt"> |
---|
| 775 | <primary sortas="c-librt">librt</primary> |
---|
| 776 | </indexterm> |
---|
| 777 | </listitem> |
---|
| 778 | </varlistentry> |
---|
| 779 | |
---|
| 780 | <varlistentry id="libthread_db"> |
---|
| 781 | <term><filename class="libraryfile">libthread_db</filename></term> |
---|
| 782 | <listitem> |
---|
| 783 | <para>Contains functions useful for |
---|
| 784 | building debuggers for multi-threaded programs</para> |
---|
| 785 | <indexterm zone="ch-system-glibc libthread_db"> |
---|
| 786 | <primary sortas="c-libthread_db">libthread_db</primary> |
---|
| 787 | </indexterm> |
---|
| 788 | </listitem> |
---|
| 789 | </varlistentry> |
---|
| 790 | |
---|
| 791 | <varlistentry id="libutil"> |
---|
| 792 | <term><filename class="libraryfile">libutil</filename></term> |
---|
| 793 | <listitem> |
---|
| 794 | <para>Contains code for <quote>standard</quote> functions used in |
---|
| 795 | many different Unix utilities</para> |
---|
| 796 | <indexterm zone="ch-system-glibc libutil"> |
---|
| 797 | <primary sortas="c-libutil">libutil</primary> |
---|
| 798 | </indexterm> |
---|
| 799 | </listitem> |
---|
| 800 | </varlistentry> |
---|
| 801 | |
---|
| 802 | </variablelist> |
---|
| 803 | |
---|
| 804 | </sect2> |
---|
| 805 | |
---|
| 806 | </sect1> |
---|