source: BOOK/final-system/common/eglibc.xml @ 82b753e0

clfs-2.1clfs-3.0.0-systemdclfs-3.0.0-sysvinitsystemdsysvinit
Last change on this file since 82b753e0 was 82b753e0, checked in by Chris Staub <chris@…>, 11 years ago

EGLIBC no longer needs --enable-add-ons
  • Property mode set to 100644
File size: 33.2 KB
Line 
1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3  "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
4  <!ENTITY % general-entities SYSTEM "../../general.ent">
5  %general-entities;
6]>
7
8<sect1 id="ch-system-eglibc" role="wrap">
9  <?dbhtml filename="eglibc.html"?>
10
11  <title>EGLIBC-&eglibc-version;</title>
12
13  <indexterm zone="ch-system-eglibc">
14    <primary sortas="a-EGLIBC">EGLIBC</primary>
15  </indexterm>
16
17  <sect2 role="package">
18    <title/>
19
20    <para>The EGLIBC package contains the main C library. This library provides
21    the basic routines for allocating memory, searching directories, opening and
22    closing files, reading and writing files, string handling, pattern matching,
23    arithmetic, and so on.</para>
24
25  </sect2>
26
27  <sect2 role="installation">
28    <title>Installation of EGLIBC</title>
29
30    <note os="z">
31      <para>Some packages outside of CLFS suggest installing GNU libiconv in
32      order to translate data from one encoding to another. The project's
33      home page (<ulink url="http://www.gnu.org/software/libiconv/"/>) says
34      <quote>This library provides an <function>iconv()</function>
35      implementation, for use on systems which don't have one, or whose
36      implementation cannot convert from/to Unicode.</quote> EGLIBC provides
37      an <function>iconv()</function> implementation and can convert from/to
38      Unicode, therefore libiconv is not required on a CLFS system.</para>
39    </note>
40
41    <para os="l1">At the end of the installation, the build system will run
42    a sanity test to make sure everything installed properly. This script will
43    attempt to test for a library that is only used in the test suite and is
44    never installed. Prevent the script from testing for this library with the
45    following command:</para>
46
47<screen os="l2"><userinput>sed -i 's/\(&amp;&amp; $name ne\) "db1"/ &amp; \1 "nss_test1"/' scripts/test-installation.pl</userinput></screen>
48
49    <para os="l3">This same script performs its tests by attempting to compile
50    test programs against certain libraries. However it does not specify the
51    ld.so, and our toolchain is still configured to use the one in /tools. The
52    following set of commands will force the script to use the complete path
53    of the new ld.so that was just installed:</para>
54
55<screen os="l4"><userinput>LINKER=$(readelf -l /tools/bin/bash | sed -n 's@.*interpret.*/tools\(.*\)]$@\1@p')
56sed -i "s|libs -o|libs -L/usr/lib -Wl,-dynamic-linker=${LINKER} -o|" \
57  scripts/test-installation.pl
58unset LINKER</userinput></screen>
59
60    <para os="p3">The following patch fixes an issue that can cause
61      ALSA to crash:</para>
62     
63<screen os="p4"><userinput>patch -Np1 -i ../&eglibc-fixes-patch;</userinput></screen>
64
65    <para os="b">The EGLIBC build system is self-contained and will install
66    perfectly, even though the compiler specs file and linker are still
67    pointing at <filename class="directory">/tools</filename>. The specs
68    and linker cannot be adjusted before the EGLIBC install because the
69    EGLIBC Autoconf tests would give false results and defeat the goal
70    of achieving a clean build.</para>
71
72    <para os="e">The EGLIBC documentation recommends building EGLIBC outside of the
73    source directory in a dedicated build directory:</para>
74
75<screen os="f"><userinput>mkdir -v ../eglibc-build
76cd ../eglibc-build</userinput></screen>
77
78    <para os="g">Prepare EGLIBC for compilation:</para>
79
80<screen os="h"><userinput>../eglibc-&eglibc-version;/configure --prefix=/usr \
81    --disable-profile --enable-kernel=2.6.32 --libexecdir=/usr/lib/eglibc</userinput></screen>
82
83    <variablelist os="i">
84      <title>The meaning of the new configure option:</title>
85
86      <varlistentry>
87        <term><parameter>--libexecdir=/usr/lib/eglibc</parameter></term>
88        <listitem>
89          <para>This changes the location of the <command>pt_chown</command>
90          program from its default of <filename
91          class="directory">/usr/libexec</filename> to <filename
92          class="directory">/usr/lib/eglibc</filename>.</para>
93        </listitem>
94      </varlistentry>
95    </variablelist>
96
97    <para os="j">Compile the package:</para>
98
99<screen os="k"><userinput>make</userinput></screen>
100
101    <important os="l">
102      <para>The test suite for EGLIBC is considered critical.
103      Do not skip it under any circumstance.</para>
104    </important>
105
106    <para os="m">Before running the tests, copy a file from the source tree into our
107    build tree to prevent a couple of test failures, then run the tests:</para>
108
109<!-- items n,o,p no longer the master, use x86_64 which has no failures -->
110
111<screen os="n"><userinput>cp -v ../eglibc-&eglibc-version;/iconvdata/gconv-modules iconvdata
112make -k check 2&gt;&amp;1 | tee eglibc-check-log; grep Error eglibc-check-log</userinput></screen>
113
114    <para os="o">The EGLIBC test suite is highly dependent on certain functions of
115    the host system, in particular the kernel. The posix/annexc test normally fails
116    and you should see <literal>Error 1 (ignored)</literal> in the output. Apart
117    from this, the EGLIBC test suite is always expected to pass. However, in certain
118    circumstances, some failures are unavoidable. If a test fails because of a missing
119    program (or missing symbolic link), or a segfault, you will see an error code
120    greater than 127 and the details will be in the log. More commonly, tests will
121    fail with <literal>Error 2</literal> - for these, the contents of the corresponding
122    <filename>.out</filename> file, e.g. <filename>posix/annexc.out</filename> may be
123    informative. Here is a list of the most common issues:</para>
124
125    <itemizedlist os="p">
126      <listitem>
127        <para>The <emphasis>math</emphasis> tests sometimes fail.
128        Certain optimization settings are known to be a
129        factor here.</para>
130      </listitem>
131      <listitem>
132        <para>If you have mounted the CLFS partition with the
133        <parameter>noatime</parameter> option, the <emphasis>atime</emphasis> test
134        will fail. As mentioned in <xref linkend="ch-partitioning-mounting"/>,
135        do not use the <parameter>noatime</parameter> option while building
136        CLFS.</para>
137      </listitem>
138      <listitem>
139        <para>When running on older and slower hardware, some tests
140        can fail because of test timeouts being exceeded.</para>
141      </listitem>
142    </itemizedlist>
143
144    <para os="q">Though it is a harmless message, the install stage of EGLIBC will
145    complain about the absence of <filename>/etc/ld.so.conf</filename>.
146    Prevent this warning with:</para>
147
148<screen os="r"><userinput>touch /etc/ld.so.conf</userinput></screen>
149
150    <para os="s">Install the package:</para>
151
152<screen os="t"><userinput>make install</userinput></screen>
153
154    <para os="ra">Install NIS and RPC related headers that are not installed by default.</para>
155
156<screen os="rb"><userinput>cp -v ../eglibc-&eglibc-version;/sunrpc/rpc/*.h /usr/include/rpc
157cp -v ../eglibc-&eglibc-version;/sunrpc/rpcsvc/*.h /usr/include/rpcsvc
158cp -v ../eglibc-&eglibc-version;/nis/rpcsvc/*.h /usr/include/rpcsvc</userinput></screen>
159
160  </sect2>
161
162  <sect2 id="i18n-eglibc" role="configuration">
163    <title>Internationalization</title>
164
165    <para>The locales that can make the system respond in a different
166    language were not installed by the above command. Install them
167    with:</para>
168
169<screen><userinput>make localedata/install-locales</userinput></screen>
170
171    <para>To save time, an alternative to running the previous command (which
172    generates and installs every locale listed in the
173    <filename>eglibc-&eglibc-version;/localedata/SUPPORTED</filename> file) is
174    to install only those locales that are wanted and needed. This can be
175    achieved by using the <command>localedef</command> command. Information on
176    this command is located in the <filename>INSTALL</filename> file in the
177    EGLIBC source. However, there are a number of locales that are essential in
178    order for the tests of future packages to pass, in particular, the
179    <emphasis>libstdc++</emphasis> tests from GCC. The following instructions,
180    instead of the <parameter>install-locales</parameter> target used above,
181    will install the minimum set of locales necessary for the tests to run
182    successfully:</para>
183
184<screen role="nodump"><userinput>mkdir -pv /usr/lib/locale
185localedef -i cs_CZ -f UTF-8 cs_CZ.UTF-8
186localedef -i de_DE -f ISO-8859-1 de_DE
187localedef -i de_DE@euro -f ISO-8859-15 de_DE@euro
188localedef -i en_HK -f ISO-8859-1 en_HK
189localedef -i en_PH -f ISO-8859-1 en_PH
190localedef -i en_US -f ISO-8859-1 en_US
191localedef -i es_MX -f ISO-8859-1 es_MX
192localedef -i fa_IR -f UTF-8 fa_IR
193localedef -i fr_FR -f ISO-8859-1 fr_FR
194localedef -i fr_FR@euro -f ISO-8859-15 fr_FR@euro
195localedef -i it_IT -f ISO-8859-1 it_IT
196localedef -i ja_JP -f EUC-JP ja_JP</userinput></screen>
197
198    <para>Some locales installed by the <command>make
199    localedata/install-locales</command> command above are not properly
200    supported by some applications that are in CLFS and CBLFS. Because
201    of the various problems that arise due to application programmers making
202    assumptions that break in such locales, CLFS should not be used in locales
203    that utilize multibyte character sets (including UTF-8) or right-to-left
204    writing order.  Numerous unofficial and unstable patches are required to
205    fix these problems, and it has been decided by the CLFS developers not to
206    support such complex locales at this time. This applies to the ja_JP and
207    fa_IR locales as well&mdash;they have been installed only for GCC and
208    Gettext tests to pass, and the <command>watch</command> program (part of
209    the Procps package) does not work properly in them. Various attempts to
210    circumvent these restrictions are documented in internationalization-related
211    hints.</para>
212
213  </sect2>
214
215  <sect2 id="conf-eglibc" role="configuration">
216    <title>Configuring EGLIBC</title>
217
218    <indexterm zone="conf-eglibc">
219      <primary sortas="e-/etc/nsswitch.conf">/etc/nsswitch.conf</primary>
220    </indexterm>
221
222    <indexterm zone="conf-eglibc">
223      <primary sortas="e-/etc/localtime">/etc/localtime</primary>
224    </indexterm>
225
226    <para>The <filename>/etc/nsswitch.conf</filename> file needs to be created
227    because, although EGLIBC provides defaults when this file is missing or
228    corrupt, the EGLIBC defaults do not work well in a networked environment.
229    The time zone also needs to be configured.</para>
230
231    <para>Create a new file <filename>/etc/nsswitch.conf</filename> by running
232    the following:</para>
233
234<screen><userinput>cat &gt; /etc/nsswitch.conf &lt;&lt; "EOF"
235<literal># Begin /etc/nsswitch.conf
236
237passwd: files
238group: files
239shadow: files
240
241hosts: files dns
242networks: files
243
244protocols: files
245services: files
246ethers: files
247rpc: files
248
249# End /etc/nsswitch.conf</literal>
250EOF</userinput></screen>
251
252    <para>To determine the local time zone, run the following script:</para>
253
254<screen role="nodump"><userinput>tzselect</userinput></screen>
255
256    <para>After answering a few questions about the location, the script will
257    output the name of the time zone (e.g., <emphasis>EST5EDT</emphasis> or
258    <emphasis>Canada/Eastern</emphasis>). Then create the
259    <filename>/etc/localtime</filename> file by running:</para>
260
261<screen><userinput>cp -v --remove-destination /usr/share/zoneinfo/<replaceable>[xxx]</replaceable> \
262    /etc/localtime</userinput></screen>
263
264    <para>Replace <replaceable>[xxx]</replaceable> with the name of the time zone
265    that <command>tzselect</command> provided (e.g., Canada/Eastern).</para>
266
267    <variablelist>
268      <title>The meaning of the cp option:</title>
269
270      <varlistentry>
271        <term><parameter>--remove-destination</parameter></term>
272        <listitem>
273          <para>This is needed to force removal of the already existing symbolic
274          link. The reason for copying the file instead of using a symlink is to
275          cover the situation where <filename class="directory">/usr</filename>
276          is on a separate partition. This could be important when booted into
277          single user mode.</para>
278        </listitem>
279      </varlistentry>
280    </variablelist>
281
282  </sect2>
283
284  <sect2 id="conf-ld" role="configuration">
285    <title>Configuring The Dynamic Loader</title>
286
287    <indexterm zone="conf-ld">
288      <primary sortas="e-/etc/ld.so.conf">/etc/ld.so.conf</primary>
289    </indexterm>
290
291    <para os="ld-a">By default, the dynamic loader (<filename
292    class="libraryfile">/lib/ld-linux.so.2</filename>) searches through
293    <filename class="directory">/lib</filename> and <filename
294    class="directory">/usr/lib</filename> for dynamic libraries that are
295    needed by programs as they are run. However, if there are libraries in
296    directories other than <filename class="directory">/lib</filename> and
297    <filename class="directory">/usr/lib</filename>, these need to be
298    added to the <filename>/etc/ld.so.conf</filename> file in order
299    for the dynamic loader to find them. Two directories that are commonly
300    known to contain additional libraries are <filename
301    class="directory">/usr/local/lib</filename> and <filename
302    class="directory">/opt/lib</filename>, so add those directories to the
303    dynamic loader's search path.</para>
304
305    <para os="ld-b">Create a new file <filename>/etc/ld.so.conf</filename> by running the
306    following:</para>
307
308<screen os="ld-c"><userinput>cat &gt; /etc/ld.so.conf &lt;&lt; "EOF"
309<literal># Begin /etc/ld.so.conf
310
311/usr/local/lib
312/opt/lib
313
314# End /etc/ld.so.conf</literal>
315EOF</userinput></screen>
316
317  </sect2>
318
319  <sect2 id="contents-eglibc" role="content">
320    <title>Contents of EGLIBC</title>
321
322    <segmentedlist>
323      <segtitle>Installed programs</segtitle>
324      <segtitle>Installed libraries</segtitle>
325      <segtitle>Installed directories</segtitle>
326
327      <seglistitem>
328        <seg>catchsegv, gencat, getconf, getent, iconv, iconvconfig, ldconfig,
329        ldd, lddlibc4, locale, localedef, makedb, mtrace, nscd,
330        pcprofiledump, pldd, pt_chown, rpcgen, sln, sprof, tzselect,
331        xtrace,zdump, and zic</seg>
332        <seg>ld.so, libBrokenLocale.[a,so], libSegFault.so, libanl.[a,so],
333        libbsd-compat.a, libc.[a,so], libc_nonshared.a, libcidn.[a,so],
334        libcrypt.[a,so], libdl.[a,so], libg.a, libieee.a, libm.[a,so],
335        libmcheck.a, libmemusage.so, libnsl.a, libnss_compat.so, libnss_dns.so,
336        libnss_files.so, libnss_hesiod.so, libnss_nis.so, libnss_nisplus.so,
337        libpcprofile.so, libpthread.[a,so], libpthread_nonshared.a,
338        libresolv.[a,so], librpcsvc.a, librt.[a,so], libthread_db.so, and
339        libutil.[a,so]</seg>
340        <seg>/usr/include/arpa, /usr/include/bits, /usr/include/gnu,
341        /usr/include/net, /usr/include/netash, /usr/include/netatalk,
342        /usr/include/netax25, /usr/include/neteconet, /usr/include/netinet,
343        /usr/include/netipx, /usr/include/netiucv, /usr/include/netpacket,
344        /usr/include/netrom, /usr/include/netrose, /usr/include/nfs,
345        /usr/include/protocols, /usr/include/rpc, /usr/include/rpcsvc,
346        /usr/include/sys, /usr/lib/gconv, /usr/lib/eglibc, /usr/lib/locale,
347        /usr/share/i18n, /usr/share/zoneinfo, /var/cache/ldconfig</seg>
348      </seglistitem>
349    </segmentedlist>
350
351    <variablelist>
352      <bridgehead renderas="sect3">Short Descriptions</bridgehead>
353      <?dbfo list-presentation="list"?>
354      <?dbhtml list-presentation="table"?>
355
356      <varlistentry id="catchsegv">
357        <term><command>catchsegv</command></term>
358        <listitem>
359          <para>Can be used to create a stack trace when a program
360          terminates with a segmentation fault</para>
361          <indexterm zone="ch-system-eglibc catchsegv">
362            <primary sortas="b-catchsegv">catchsegv</primary>
363          </indexterm>
364        </listitem>
365      </varlistentry>
366
367      <varlistentry id="gencat">
368        <term><command>gencat</command></term>
369        <listitem>
370          <para>Generates message catalogues</para>
371          <indexterm zone="ch-system-eglibc gencat">
372            <primary sortas="b-gencat">gencat</primary>
373          </indexterm>
374        </listitem>
375      </varlistentry>
376
377      <varlistentry id="getconf">
378        <term><command>getconf</command></term>
379        <listitem>
380          <para>Displays the system configuration values for file system specific
381          variables</para>
382          <indexterm zone="ch-system-eglibc getconf">
383            <primary sortas="b-getconf">getconf</primary>
384          </indexterm>
385        </listitem>
386      </varlistentry>
387
388      <varlistentry id="getent">
389        <term><command>getent</command></term>
390        <listitem>
391          <para>Gets entries from an administrative database</para>
392          <indexterm zone="ch-system-eglibc getent">
393            <primary sortas="b-getent">getent</primary>
394          </indexterm>
395        </listitem>
396      </varlistentry>
397
398      <varlistentry id="iconv">
399        <term><command>iconv</command></term>
400        <listitem>
401          <para>Performs character set conversion</para>
402          <indexterm zone="ch-system-eglibc iconv">
403            <primary sortas="b-iconv">iconv</primary>
404          </indexterm>
405        </listitem>
406      </varlistentry>
407
408      <varlistentry id="iconvconfig">
409        <term><command>iconvconfig</command></term>
410        <listitem>
411          <para>Creates fastloading <command>iconv</command> module configuration
412          files</para>
413          <indexterm zone="ch-system-eglibc iconvconfig">
414            <primary sortas="b-iconvconfig">iconvconfig</primary>
415          </indexterm>
416        </listitem>
417      </varlistentry>
418
419      <varlistentry id="ldconfig">
420        <term><command>ldconfig</command></term>
421        <listitem>
422          <para>Configures the dynamic linker runtime bindings</para>
423          <indexterm zone="ch-system-eglibc ldconfig">
424            <primary sortas="b-ldconfig">ldconfig</primary>
425          </indexterm>
426        </listitem>
427      </varlistentry>
428
429      <varlistentry id="ldd">
430        <term><command>ldd</command></term>
431        <listitem>
432          <para>Reports which shared libraries are required
433          by each given program or shared library</para>
434          <indexterm zone="ch-system-eglibc ldd">
435            <primary sortas="b-ldd">ldd</primary>
436          </indexterm>
437        </listitem>
438      </varlistentry>
439
440      <varlistentry id="lddlibc4">
441        <term><command>lddlibc4</command></term>
442        <listitem>
443          <para>Assists <command>ldd</command> with object files</para>
444          <indexterm zone="ch-system-eglibc lddlibc4">
445            <primary sortas="b-lddlibc4">lddlibc4</primary>
446          </indexterm>
447        </listitem>
448      </varlistentry>
449
450      <varlistentry id="locale">
451        <term><command>locale</command></term>
452        <listitem>
453          <para>Tells the compiler to enable or disable the use of POSIX locales
454          for built-in operations</para>
455          <indexterm zone="ch-system-eglibc locale">
456            <primary sortas="b-locale">locale</primary>
457          </indexterm>
458        </listitem>
459      </varlistentry>
460
461      <varlistentry id="localedef">
462        <term><command>localedef</command></term>
463        <listitem>
464          <para>Compiles locale specifications</para>
465          <indexterm zone="ch-system-eglibc localedef">
466            <primary sortas="b-localedef">localedef</primary>
467          </indexterm>
468        </listitem>
469      </varlistentry>
470
471      <varlistentry id="makedb">
472        <term><command>makedb</command></term>
473        <listitem>
474          <para>Creates a simple database from textual input</para>
475          <indexterm zone="ch-system-eglibc makedb">
476            <primary sortas="b-makedb">makedb</primary>
477          </indexterm>
478        </listitem>
479      </varlistentry>
480
481      <varlistentry id="mtrace">
482        <term><command>mtrace</command></term>
483        <listitem>
484          <para>Reads and interprets a memory trace file and
485          displays a summary in human-readable format</para>
486          <indexterm zone="ch-system-eglibc mtrace">
487            <primary sortas="b-mtrace">mtrace</primary>
488          </indexterm>
489        </listitem>
490      </varlistentry>
491
492      <varlistentry id="nscd">
493        <term><command>nscd</command></term>
494        <listitem>
495          <para>A daemon that provides a cache for the most common name
496          service requests</para>
497          <indexterm zone="ch-system-eglibc nscd">
498            <primary sortas="b-nscd">nscd</primary>
499          </indexterm>
500        </listitem>
501      </varlistentry>
502
503      <varlistentry id="pcprofiledump">
504        <term><command>pcprofiledump</command></term>
505        <listitem>
506          <para>Dumps information generated by PC profiling</para>
507          <indexterm zone="ch-system-eglibc pcprofiledump">
508            <primary sortas="b-pcprofiledump">pcprofiledump</primary>
509          </indexterm>
510        </listitem>
511      </varlistentry>
512
513      <varlistentry id="pldd">
514        <term><command>pldd</command></term>
515        <listitem>
516          <para>Lists dynamic shared objects used by running processes</para>
517          <indexterm zone="ch-system-eglibc pldd">
518            <primary sortas="b-pldd">pldd</primary>
519          </indexterm>
520        </listitem>
521      </varlistentry>
522
523      <varlistentry id="pt_chown">
524        <term><command>pt_chown</command></term>
525        <listitem>
526          <para>A helper program for <command>grantpt</command> to set the owner,
527          group and access permissions of a slave pseudo terminal</para>
528          <indexterm zone="ch-system-eglibc pt_chown">
529            <primary sortas="b-pt_chown">pt_chown</primary>
530          </indexterm>
531        </listitem>
532      </varlistentry>
533
534      <varlistentry id="rpcgen">
535        <term><command>rpcgen</command></term>
536        <listitem>
537          <para>Generates C code to implement the Remote Procecure Call (RPC)
538          protocol</para>
539          <indexterm zone="ch-system-eglibc rpcgen">
540            <primary sortas="b-rpcgen">rpcgen</primary>
541          </indexterm>
542        </listitem>
543      </varlistentry>
544
545      <varlistentry id="sln">
546        <term><command>sln</command></term>
547        <listitem>
548          <para>A statically linked program that creates symbolic links</para>
549          <indexterm zone="ch-system-eglibc sln">
550            <primary sortas="b-sln">sln</primary>
551          </indexterm>
552        </listitem>
553      </varlistentry>
554
555      <varlistentry id="sotruss">
556        <term><command>sotruss</command></term>
557        <listitem>
558          <para>Traces shared library procedure calls of a specified command</para>
559          <indexterm zone="ch-system-eglibc sotruss">
560            <primary sortas="b-sotruss">sotruss</primary>
561          </indexterm>
562        </listitem>
563      </varlistentry>
564
565      <varlistentry id="sprof">
566        <term><command>sprof</command></term>
567        <listitem>
568          <para>Reads and displays shared object profiling data</para>
569          <indexterm zone="ch-system-eglibc sprof">
570            <primary sortas="b-sprof">sprof</primary>
571          </indexterm>
572        </listitem>
573      </varlistentry>
574
575      <varlistentry id="tzselect">
576        <term><command>tzselect</command></term>
577        <listitem>
578          <para>Asks the user about the location of the
579          system and reports the corresponding time zone description</para>
580          <indexterm zone="ch-system-eglibc tzselect">
581            <primary sortas="b-tzselect">tzselect</primary>
582          </indexterm>
583        </listitem>
584      </varlistentry>
585
586      <varlistentry id="xtrace">
587        <term><command>xtrace</command></term>
588        <listitem>
589          <para>Traces the execution of a program by
590          printing the currently executed function</para>
591          <indexterm zone="ch-system-eglibc xtrace">
592            <primary sortas="b-xtrace">xtrace</primary>
593          </indexterm>
594        </listitem>
595      </varlistentry>
596
597      <varlistentry id="zdump">
598        <term><command>zdump</command></term>
599        <listitem>
600          <para>The time zone dumper</para>
601          <indexterm zone="ch-system-eglibc zdump">
602            <primary sortas="b-zdump">zdump</primary>
603          </indexterm>
604        </listitem>
605      </varlistentry>
606
607      <varlistentry id="zic">
608        <term><command>zic</command></term>
609        <listitem>
610          <para>The time zone compiler</para>
611          <indexterm zone="ch-system-eglibc zic">
612            <primary sortas="b-zic">zic</primary>
613          </indexterm>
614        </listitem>
615      </varlistentry>
616
617      <varlistentry id="ld.so">
618        <term><filename class="libraryfile">ld.so</filename></term>
619        <listitem>
620          <para>The helper program for shared library executables</para>
621          <indexterm zone="ch-system-eglibc ld.so">
622            <primary sortas="c-ld.so">ld.so</primary>
623          </indexterm>
624        </listitem>
625      </varlistentry>
626
627      <varlistentry id="libBrokenLocale">
628        <term><filename class="libraryfile">libBrokenLocale</filename></term>
629        <listitem>
630          <para>Used by programs, such as Mozilla, to solve broken locales</para>
631          <indexterm zone="ch-system-eglibc libBrokenLocale">
632            <primary sortas="c-libBrokenLocale">libBrokenLocale</primary>
633          </indexterm>
634        </listitem>
635      </varlistentry>
636
637      <varlistentry id="libSegFault">
638        <term><filename class="libraryfile">libSegFault</filename></term>
639        <listitem>
640          <para>The segmentation fault signal handler</para>
641          <indexterm zone="ch-system-eglibc libSegFault">
642            <primary sortas="c-libSegFault">libSegFault</primary>
643          </indexterm>
644        </listitem>
645      </varlistentry>
646
647      <varlistentry id="libanl">
648        <term><filename class="libraryfile">libanl</filename></term>
649        <listitem>
650          <para>An asynchronous name lookup library</para>
651          <indexterm zone="ch-system-eglibc libanl">
652            <primary sortas="c-libanl">libanl</primary>
653          </indexterm>
654        </listitem>
655      </varlistentry>
656
657      <varlistentry id="libbsd-compat">
658        <term><filename class="libraryfile">libbsd-compat</filename></term>
659        <listitem>
660          <para>Provides the portability needed
661          in order to run certain Berkey Software Distribution (BSD) programs
662          under Linux</para>
663          <indexterm zone="ch-system-eglibc libbsd-compat">
664            <primary sortas="c-libbsd-compat">libbsd-compat</primary>
665          </indexterm>
666        </listitem>
667      </varlistentry>
668
669      <varlistentry id="libc">
670        <term><filename class="libraryfile">libc</filename></term>
671        <listitem>
672          <para>The main C library</para>
673          <indexterm zone="ch-system-eglibc libc">
674            <primary sortas="c-libc">libc</primary>
675          </indexterm>
676        </listitem>
677      </varlistentry>
678
679      <varlistentry id="libcidn">
680        <term><filename class="libraryfile">libcidn</filename></term>
681        <listitem>
682          <para>Used internally by EGLIBC for handling internationalized domain
683          names in the <function>getaddrinfo()</function> function</para>
684          <indexterm zone="ch-system-eglibc libcidn">
685            <primary sortas="c-libcidn">libcidn</primary>
686          </indexterm>
687        </listitem>
688      </varlistentry>
689
690      <varlistentry id="libcrypt">
691        <term><filename class="libraryfile">libcrypt</filename></term>
692        <listitem>
693          <para>The cryptography library</para>
694          <indexterm zone="ch-system-eglibc libcrypt">
695            <primary sortas="c-libcrypt">libcrypt</primary>
696          </indexterm>
697        </listitem>
698      </varlistentry>
699
700      <varlistentry id="libdl">
701        <term><filename class="libraryfile">libdl</filename></term>
702        <listitem>
703          <para>The dynamic linking interface library</para>
704          <indexterm zone="ch-system-eglibc libdl">
705            <primary sortas="c-libdl">libdl</primary>
706          </indexterm>
707        </listitem>
708      </varlistentry>
709
710      <varlistentry id="libg">
711        <term><filename class="libraryfile">libg</filename></term>
712        <listitem>
713          <para>A runtime library for <command>g++</command></para>
714          <indexterm zone="ch-system-eglibc libg">
715            <primary sortas="c-libg">libg</primary>
716          </indexterm>
717        </listitem>
718      </varlistentry>
719
720      <varlistentry id="libieee">
721        <term><filename class="libraryfile">libieee</filename></term>
722        <listitem>
723          <para>The Institute of Electrical and Electronic Engineers (IEEE)
724          floating point library</para>
725          <indexterm zone="ch-system-eglibc libieee">
726            <primary sortas="c-libieee">libieee</primary>
727          </indexterm>
728        </listitem>
729      </varlistentry>
730
731      <varlistentry id="libm">
732        <term><filename class="libraryfile">libm</filename></term>
733        <listitem>
734          <para>The mathematical library</para>
735          <indexterm zone="ch-system-eglibc libm">
736            <primary sortas="c-libm">libm</primary>
737          </indexterm>
738        </listitem>
739      </varlistentry>
740
741      <varlistentry id="libmcheck">
742        <term><filename class="libraryfile">libmcheck</filename></term>
743        <listitem>
744          <para>Contains code run at boot</para>
745          <indexterm zone="ch-system-eglibc libmcheck">
746            <primary sortas="c-libmcheck">libmcheck</primary>
747          </indexterm>
748        </listitem>
749      </varlistentry>
750
751      <varlistentry id="libmemusage">
752        <term><filename class="libraryfile">libmemusage</filename></term>
753        <listitem>
754          <para>Used by <command>memusage</command> (included in EGLIBC, but
755          not built in a base CLFS system as it has additional dependencies)
756          to help collect information about the memory usage of a program</para>
757          <indexterm zone="ch-system-eglibc libmemusage">
758            <primary sortas="c-libmemusage">libmemusage</primary>
759          </indexterm>
760        </listitem>
761      </varlistentry>
762
763      <varlistentry id="libnsl">
764        <term><filename class="libraryfile">libnsl</filename></term>
765        <listitem>
766          <para>The network services library</para>
767          <indexterm zone="ch-system-eglibc libnsl">
768            <primary sortas="c-libnsl">libnsl</primary>
769          </indexterm>
770        </listitem>
771      </varlistentry>
772
773      <varlistentry id="libnss">
774        <term><filename class="libraryfile">libnss</filename></term>
775        <listitem>
776          <para>The Name Service Switch libraries, containing functions for
777          resolving host names, user names, group names, aliases, services,
778          protocols, etc.</para>
779          <indexterm zone="ch-system-eglibc libnss">
780            <primary sortas="c-libnss">libnss</primary>
781          </indexterm>
782        </listitem>
783      </varlistentry>
784
785      <varlistentry id="libpcprofile">
786        <term><filename class="libraryfile">libpcprofile</filename></term>
787        <listitem>
788          <para>Contains profiling functions used to track the amount of CPU
789          time spent in specific source code lines</para>
790          <indexterm zone="ch-system-eglibc libpcprofile">
791            <primary sortas="c-libpcprofile">libpcprofile</primary>
792          </indexterm>
793        </listitem>
794      </varlistentry>
795
796      <varlistentry id="libpthread">
797        <term><filename class="libraryfile">libpthread</filename></term>
798        <listitem>
799          <para>The POSIX threads library</para>
800          <indexterm zone="ch-system-eglibc libpthread">
801            <primary sortas="c-libpthread">libpthread</primary>
802          </indexterm>
803        </listitem>
804      </varlistentry>
805
806      <varlistentry id="libresolv">
807        <term><filename class="libraryfile">libresolv</filename></term>
808        <listitem>
809          <para>Contains functions for creating, sending, and interpreting
810          packets to the Internet domain name servers</para>
811          <indexterm zone="ch-system-eglibc libresolv">
812            <primary sortas="c-libresolv">libresolv</primary>
813          </indexterm>
814        </listitem>
815      </varlistentry>
816
817      <varlistentry id="librpcsvc">
818        <term><filename class="libraryfile">librpcsvc</filename></term>
819        <listitem>
820          <para>Contains functions providing miscellaneous RPC services</para>
821          <indexterm zone="ch-system-eglibc librpcsvc">
822            <primary sortas="c-librpcsvc">librpcsvc</primary>
823          </indexterm>
824        </listitem>
825      </varlistentry>
826
827      <varlistentry id="librt">
828        <term><filename class="libraryfile">librt</filename></term>
829        <listitem>
830          <para>Contains functions providing most of the interfaces specified by
831          the POSIX.1b Realtime Extension</para>
832          <indexterm zone="ch-system-eglibc librt">
833            <primary sortas="c-librt">librt</primary>
834          </indexterm>
835        </listitem>
836      </varlistentry>
837
838      <varlistentry id="libthread_db">
839        <term><filename class="libraryfile">libthread_db</filename></term>
840        <listitem>
841          <para>Contains functions useful for
842          building debuggers for multi-threaded programs</para>
843          <indexterm zone="ch-system-eglibc libthread_db">
844            <primary sortas="c-libthread_db">libthread_db</primary>
845          </indexterm>
846        </listitem>
847      </varlistentry>
848
849      <varlistentry id="libutil">
850        <term><filename class="libraryfile">libutil</filename></term>
851        <listitem>
852          <para>Contains code for <quote>standard</quote> functions used in
853          many different Unix utilities</para>
854          <indexterm zone="ch-system-eglibc libutil">
855            <primary sortas="c-libutil">libutil</primary>
856          </indexterm>
857        </listitem>
858      </varlistentry>
859
860    </variablelist>
861
862  </sect2>
863
864</sect1>
Note: See TracBrowser for help on using the repository browser.