source: BOOK/final-system/common/eglibc.xml@ 55c1469e

clfs-1.2 clfs-2.1 clfs-3.0.0-systemd clfs-3.0.0-sysvinit systemd sysvinit
Last change on this file since 55c1469e was 61ad0b7f, checked in by Chris Staub <chris@…>, 15 years ago

Added installed directory info for a number of packages

  • Property mode set to 100644
File size: 31.7 KB
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[3f8be484]1<?xml version="1.0" encoding="ISO-8859-1"?>
[aa18ac0]2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3 "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
[3f8be484]4 <!ENTITY % general-entities SYSTEM "../../general.ent">
5 %general-entities;
6]>
7
[093b0e8]8<sect1 id="ch-system-eglibc" role="wrap">
9 <?dbhtml filename="eglibc.html"?>
[3f8be484]10
[093b0e8]11 <title>EGLIBC-&eglibc-version;</title>
[3f8be484]12
[093b0e8]13 <indexterm zone="ch-system-eglibc">
14 <primary sortas="a-EGLIBC">EGLIBC</primary>
[3f8be484]15 </indexterm>
16
17 <sect2 role="package">
18 <title/>
19
[093b0e8]20 <para>The EGLIBC package contains the main C library. This library provides
[3f8be484]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">
[093b0e8]28 <title>Installation of EGLIBC</title>
[3f8be484]29
30 <note os="z">
[a1fb12f]31 <para>Some packages outside of CLFS suggest installing GNU libiconv in
[3f8be484]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
[093b0e8]36 implementation cannot convert from/to Unicode.</quote> EGLIBC provides
[3f8be484]37 an <function>iconv()</function> implementation and can convert from/to
[a1fb12f]38 Unicode, therefore libiconv is not required on a CLFS system.</para>
[3f8be484]39 </note>
40
[04df16b]41 <para os="p1">The following patch contains a number architecture and fixes related to
42 our build &eglibc-version;. This patch was developed by CLFS devs For details on
43 what's in the patch, look at http://trac.cross-lfs.org/browser/scripts/fetch/eglibc/&eglibc-version;:</para>
[d8f87e8]44
45<screen os="p2"><userinput>patch -Np1 -i ../&eglibc-fixes-patch;</userinput></screen>
46
[c0bc7c4]47 <para os="l3">The following sed makes sure that newly built EGLIBC is tested,
[d8f87e8]48 during make install, instead of the one we previously build:</para>
49
[c0bc7c4]50<screen os="l4"><userinput>LINKER=$(readelf -l $(file /tools/lib/libc-* | cut -f1 -d:) | sed -n 's@.*interpret.*/tools\(.*\)]$@\1@p')
[d8f87e8]51sed -i "s|libs -o|libs -L/usr/lib -Wl,-dynamic-linker=${LINKER} -o|" \
52 scripts/test-installation.pl
53unset LINKER</userinput></screen>
54
[093b0e8]55 <para os="b">The EGLIBC build system is self-contained and will install
[3f8be484]56 perfectly, even though the compiler specs file and linker are still
57 pointing at <filename class="directory">/tools</filename>. The specs
[093b0e8]58 and linker cannot be adjusted before the EGLIBC install because the
59 EGLIBC Autoconf tests would give false results and defeat the goal
[3f8be484]60 of achieving a clean build.</para>
61
[093b0e8]62 <para os="e">The EGLIBC documentation recommends building EGLIBC outside of the
[3f8be484]63 source directory in a dedicated build directory:</para>
64
[093b0e8]65<screen os="f"><userinput>mkdir -v ../eglibc-build
66cd ../eglibc-build</userinput></screen>
[3f8be484]67
[093b0e8]68 <para os="g">Prepare EGLIBC for compilation:</para>
[3f8be484]69
[093b0e8]70<screen os="h"><userinput>../eglibc-&eglibc-version;/configure --prefix=/usr \
[3f8be484]71 --disable-profile --enable-add-ons --enable-kernel=2.6.0 \
[093b0e8]72 --libexecdir=/usr/lib/eglibc</userinput></screen>
[3f8be484]73
74 <variablelist os="i">
75 <title>The meaning of the new configure option:</title>
76
77 <varlistentry>
[093b0e8]78 <term><parameter>--libexecdir=/usr/lib/eglibc</parameter></term>
[3f8be484]79 <listitem>
80 <para>This changes the location of the <command>pt_chown</command>
81 program from its default of <filename
82 class="directory">/usr/libexec</filename> to <filename
[093b0e8]83 class="directory">/usr/lib/eglibc</filename>.</para>
[3f8be484]84 </listitem>
85 </varlistentry>
86 </variablelist>
87
88 <para os="j">Compile the package:</para>
89
90<screen os="k"><userinput>make</userinput></screen>
91
92 <important os="l">
[093b0e8]93 <para>The test suite for EGLIBC is considered critical.
[3f8be484]94 Do not skip it under any circumstance.</para>
95 </important>
96
[d8f87e8]97 <para os="m">Before running the tests, copy a file from the source tree into our
98 build tree to prevent a couple of test failures, then run the tests:</para>
[3f8be484]99
100<!-- items n,o,p no longer the master, use x86_64 which has no failures -->
101
[2026a2e]102<screen os="n"><userinput>cp -v ../eglibc-&eglibc-version;/iconvdata/gconv-modules iconvdata
[d8f87e8]103make -k check &gt;eglibc-check-log 2&gt;&amp;1 ; grep Error eglibc-check-log</userinput></screen>
[3f8be484]104
[093b0e8]105 <para os="o">The EGLIBC test suite is highly dependent on certain functions of
[10b2850]106 the host system, in particular the kernel. The posix/annexc test normally fails
107 and you should see <literal>Error 1 (ignored)</literal> in the output. Apart
[093b0e8]108 from this, the EGLIBC test suite is always expected to pass. However, in certain
[10b2850]109 circumstances, some failures are unavoidable. If a test fails because of a missing
110 program (or missing symbolic link), or a segfault, you will see an error code
111 greater than 127 and the details will be in the log. More commonly, tests will
112 fail with <literal>Error 2</literal> - for these, the contents of the corresponding
113 <filename>.out</filename> file, e.g. <filename>posix/annexc.out</filename> may be
114 informative. Here is a list of the most common issues:</para>
[3f8be484]115
116 <itemizedlist os="p">
117 <listitem>
[3514708]118 <para>The <emphasis>math</emphasis> tests sometimes fail.
119 Certain optimization settings are known to be a
120 factor here.</para>
[3f8be484]121 </listitem>
122 <listitem>
[fb40919]123 <para>If you have mounted the CLFS partition with the
[3f8be484]124 <parameter>noatime</parameter> option, the <emphasis>atime</emphasis> test
125 will fail. As mentioned in <xref linkend="ch-partitioning-mounting"/>,
126 do not use the <parameter>noatime</parameter> option while building
[fb40919]127 CLFS.</para>
[3f8be484]128 </listitem>
129 <listitem>
130 <para>When running on older and slower hardware, some tests
131 can fail because of test timeouts being exceeded.</para>
132 </listitem>
133 </itemizedlist>
134
[093b0e8]135 <para os="q">Though it is a harmless message, the install stage of EGLIBC will
[3f8be484]136 complain about the absence of <filename>/etc/ld.so.conf</filename>.
137 Prevent this warning with:</para>
138
139<screen os="r"><userinput>touch /etc/ld.so.conf</userinput></screen>
140
141 <para os="s">Install the package:</para>
142
143<screen os="t"><userinput>make install</userinput></screen>
144
145 </sect2>
146
[093b0e8]147 <sect2 id="i18n-eglibc" role="configuration">
[3f8be484]148 <title>Internationalization</title>
149
150 <para>The locales that can make the system respond in a different
[5a321cb]151 language were not installed by the above command. Install them
[3f8be484]152 with:</para>
153
154<screen><userinput>make localedata/install-locales</userinput></screen>
155
156 <para>To save time, an alternative to running the previous command (which
[643f8be]157 generates and installs every locale listed in the
[e7aadbe]158 <filename>eglibc-&eglibc-version;/localedata/SUPPORTED</filename> file) is
159 to install only those locales that are wanted and needed. This can be
160 achieved by using the <command>localedef</command> command. Information on
161 this command is located in the <filename>INSTALL</filename> file in the
162 EGLIBC source. However, there are a number of locales that are essential in
163 order for the tests of future packages to pass, in particular, the
[3f8be484]164 <emphasis>libstdc++</emphasis> tests from GCC. The following instructions,
165 instead of the <parameter>install-locales</parameter> target used above,
166 will install the minimum set of locales necessary for the tests to run
167 successfully:</para>
168
[3a3e135]169<screen role="nodump"><userinput>mkdir -pv /usr/lib/locale
[8a10f1c]170localedef -i cs_CZ -f UTF-8 cs_CZ.UTF-8
[3f8be484]171localedef -i de_DE -f ISO-8859-1 de_DE
172localedef -i de_DE@euro -f ISO-8859-15 de_DE@euro
173localedef -i en_HK -f ISO-8859-1 en_HK
174localedef -i en_PH -f ISO-8859-1 en_PH
175localedef -i en_US -f ISO-8859-1 en_US
176localedef -i es_MX -f ISO-8859-1 es_MX
177localedef -i fa_IR -f UTF-8 fa_IR
178localedef -i fr_FR -f ISO-8859-1 fr_FR
179localedef -i fr_FR@euro -f ISO-8859-15 fr_FR@euro
180localedef -i it_IT -f ISO-8859-1 it_IT
181localedef -i ja_JP -f EUC-JP ja_JP</userinput></screen>
182
183 <para>Some locales installed by the <command>make
184 localedata/install-locales</command> command above are not properly
[e3a8717]185 supported by some applications that are in CLFS and CBLFS. Because
[3f8be484]186 of the various problems that arise due to application programmers making
[fb40919]187 assumptions that break in such locales, CLFS should not be used in locales
[3f8be484]188 that utilize multibyte character sets (including UTF-8) or right-to-left
189 writing order. Numerous unofficial and unstable patches are required to
[fb40919]190 fix these problems, and it has been decided by the CLFS developers not to
[643f8be]191 support such complex locales at this time. This applies to the ja_JP and
192 fa_IR locales as well&mdash;they have been installed only for GCC and
193 Gettext tests to pass, and the <command>watch</command> program (part of
194 the Procps package) does not work properly in them. Various attempts to
195 circumvent these restrictions are documented in internationalization-related
196 hints.</para>
[3f8be484]197
198 </sect2>
199
[093b0e8]200 <sect2 id="conf-eglibc" role="configuration">
201 <title>Configuring EGLIBC</title>
[3f8be484]202
[093b0e8]203 <indexterm zone="conf-eglibc">
[3f8be484]204 <primary sortas="e-/etc/nsswitch.conf">/etc/nsswitch.conf</primary>
205 </indexterm>
206
[093b0e8]207 <indexterm zone="conf-eglibc">
[3f8be484]208 <primary sortas="e-/etc/localtime">/etc/localtime</primary>
209 </indexterm>
210
211 <para>The <filename>/etc/nsswitch.conf</filename> file needs to be created
[093b0e8]212 because, although EGLIBC provides defaults when this file is missing or
213 corrupt, the EGLIBC defaults do not work well in a networked environment.
[3f8be484]214 The time zone also needs to be configured.</para>
215
216 <para>Create a new file <filename>/etc/nsswitch.conf</filename> by running
217 the following:</para>
218
219<screen><userinput>cat &gt; /etc/nsswitch.conf &lt;&lt; "EOF"
220<literal># Begin /etc/nsswitch.conf
221
222passwd: files
223group: files
224shadow: files
225
226hosts: files dns
227networks: files
228
229protocols: files
230services: files
231ethers: files
232rpc: files
233
234# End /etc/nsswitch.conf</literal>
235EOF</userinput></screen>
236
237 <para>To determine the local time zone, run the following script:</para>
238
[0f3854e]239<screen role="nodump"><userinput>tzselect</userinput></screen>
[3f8be484]240
241 <para>After answering a few questions about the location, the script will
242 output the name of the time zone (e.g., <emphasis>EST5EDT</emphasis> or
243 <emphasis>Canada/Eastern</emphasis>). Then create the
244 <filename>/etc/localtime</filename> file by running:</para>
245
[94e6142]246<screen><userinput>cp -v --remove-destination /usr/share/zoneinfo/<replaceable>[xxx]</replaceable> \
[3f8be484]247 /etc/localtime</userinput></screen>
248
249 <para>Replace <replaceable>[xxx]</replaceable> with the name of the time zone
250 that <command>tzselect</command> provided (e.g., Canada/Eastern).</para>
251
252 <variablelist>
253 <title>The meaning of the cp option:</title>
254
255 <varlistentry>
256 <term><parameter>--remove-destination</parameter></term>
257 <listitem>
258 <para>This is needed to force removal of the already existing symbolic
259 link. The reason for copying the file instead of using a symlink is to
260 cover the situation where <filename class="directory">/usr</filename>
261 is on a separate partition. This could be important when booted into
262 single user mode.</para>
263 </listitem>
264 </varlistentry>
265 </variablelist>
266
267 </sect2>
268
269 <sect2 id="conf-ld" role="configuration">
[0b637f1]270 <title>Configuring The Dynamic Loader</title>
[3f8be484]271
272 <indexterm zone="conf-ld">
273 <primary sortas="e-/etc/ld.so.conf">/etc/ld.so.conf</primary>
274 </indexterm>
275
[3998188]276 <para os="ld-a">By default, the dynamic loader (<filename
[3f8be484]277 class="libraryfile">/lib/ld-linux.so.2</filename>) searches through
278 <filename class="directory">/lib</filename> and <filename
279 class="directory">/usr/lib</filename> for dynamic libraries that are
280 needed by programs as they are run. However, if there are libraries in
281 directories other than <filename class="directory">/lib</filename> and
282 <filename class="directory">/usr/lib</filename>, these need to be
283 added to the <filename>/etc/ld.so.conf</filename> file in order
284 for the dynamic loader to find them. Two directories that are commonly
285 known to contain additional libraries are <filename
286 class="directory">/usr/local/lib</filename> and <filename
287 class="directory">/opt/lib</filename>, so add those directories to the
288 dynamic loader's search path.</para>
289
[3998188]290 <para os="ld-b">Create a new file <filename>/etc/ld.so.conf</filename> by running the
[3f8be484]291 following:</para>
292
[3998188]293<screen os="ld-c"><userinput>cat &gt; /etc/ld.so.conf &lt;&lt; "EOF"
[3f8be484]294<literal># Begin /etc/ld.so.conf
295
296/usr/local/lib
297/opt/lib
298
299# End /etc/ld.so.conf</literal>
300EOF</userinput></screen>
301
302 </sect2>
303
[093b0e8]304 <sect2 id="contents-eglibc" role="content">
305 <title>Contents of EGLIBC</title>
[3f8be484]306
307 <segmentedlist>
308 <segtitle>Installed programs</segtitle>
309 <segtitle>Installed libraries</segtitle>
[61ad0b7f]310 <segtitle>Installed directories</segtitle>
[3f8be484]311
312 <seglistitem>
313 <seg>catchsegv, gencat, getconf, getent, iconv, iconvconfig, ldconfig,
[1e91bbd]314 ldd, lddlibc4, locale, localedef, mtrace, nscd,
[3f8be484]315 pcprofiledump, pt_chown, rpcgen, rpcinfo, sln, sprof, tzselect, xtrace,
316 zdump, and zic</seg>
317 <seg>ld.so, libBrokenLocale.[a,so], libSegFault.so, libanl.[a,so],
[188b6b2]318 libbsd-compat.a, libc.[a,so], libc_nonshared.a, libcidn.[a,so],
319 libcrypt.[a,so], libdl.[a,so], libg.a, libieee.a, libm.[a,so],
320 libmcheck.a, libmemusage.so, libnsl.a, libnss_compat.so, libnss_dns.so,
321 libnss_files.so, libnss_hesiod.so, libnss_nis.so, libnss_nisplus.so,
322 libpcprofile.so, libpthread.[a,so], libpthread_nonshared.a,
[3f8be484]323 libresolv.[a,so], librpcsvc.a, librt.[a,so], libthread_db.so, and
324 libutil.[a,so]</seg>
[61ad0b7f]325 <seg>/usr/include/arpa, /usr/include/bits, /usr/include/gnu,
326 /usr/include/net, /usr/include/netash, /usr/include/netatalk,
327 /usr/include/netax25, /usr/include/neteconet, /usr/include/netinet,
328 /usr/include/netipx, /usr/include/netiucv, /usr/include/netpacket,
329 /usr/include/netrom, /usr/include/netrose, /usr/include/nfs,
330 /usr/include/protocols, /usr/include/rpc, /usr/include/rpcsvc,
331 /usr/include/sys, /usr/lib/gconv, /usr/lib/eglibc, /usr/lib/locale,
332 /usr/share/i18n, /usr/share/zoneinfo, /var/cache/ldconfig</seg>
[3f8be484]333 </seglistitem>
334 </segmentedlist>
335
336 <variablelist>
337 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
338 <?dbfo list-presentation="list"?>
339 <?dbhtml list-presentation="table"?>
340
341 <varlistentry id="catchsegv">
342 <term><command>catchsegv</command></term>
343 <listitem>
344 <para>Can be used to create a stack trace when a program
345 terminates with a segmentation fault</para>
[093b0e8]346 <indexterm zone="ch-system-eglibc catchsegv">
[3f8be484]347 <primary sortas="b-catchsegv">catchsegv</primary>
348 </indexterm>
349 </listitem>
350 </varlistentry>
351
352 <varlistentry id="gencat">
353 <term><command>gencat</command></term>
354 <listitem>
355 <para>Generates message catalogues</para>
[093b0e8]356 <indexterm zone="ch-system-eglibc gencat">
[3f8be484]357 <primary sortas="b-gencat">gencat</primary>
358 </indexterm>
359 </listitem>
360 </varlistentry>
361
362 <varlistentry id="getconf">
363 <term><command>getconf</command></term>
364 <listitem>
365 <para>Displays the system configuration values for file system specific
366 variables</para>
[093b0e8]367 <indexterm zone="ch-system-eglibc getconf">
[3f8be484]368 <primary sortas="b-getconf">getconf</primary>
369 </indexterm>
370 </listitem>
371 </varlistentry>
372
373 <varlistentry id="getent">
374 <term><command>getent</command></term>
375 <listitem>
376 <para>Gets entries from an administrative database</para>
[093b0e8]377 <indexterm zone="ch-system-eglibc getent">
[3f8be484]378 <primary sortas="b-getent">getent</primary>
379 </indexterm>
380 </listitem>
381 </varlistentry>
382
383 <varlistentry id="iconv">
384 <term><command>iconv</command></term>
385 <listitem>
386 <para>Performs character set conversion</para>
[093b0e8]387 <indexterm zone="ch-system-eglibc iconv">
[3f8be484]388 <primary sortas="b-iconv">iconv</primary>
389 </indexterm>
390 </listitem>
391 </varlistentry>
392
393 <varlistentry id="iconvconfig">
394 <term><command>iconvconfig</command></term>
395 <listitem>
396 <para>Creates fastloading <command>iconv</command> module configuration
397 files</para>
[093b0e8]398 <indexterm zone="ch-system-eglibc iconvconfig">
[3f8be484]399 <primary sortas="b-iconvconfig">iconvconfig</primary>
400 </indexterm>
401 </listitem>
402 </varlistentry>
403
404 <varlistentry id="ldconfig">
405 <term><command>ldconfig</command></term>
406 <listitem>
407 <para>Configures the dynamic linker runtime bindings</para>
[093b0e8]408 <indexterm zone="ch-system-eglibc ldconfig">
[3f8be484]409 <primary sortas="b-ldconfig">ldconfig</primary>
410 </indexterm>
411 </listitem>
412 </varlistentry>
413
414 <varlistentry id="ldd">
415 <term><command>ldd</command></term>
416 <listitem>
417 <para>Reports which shared libraries are required
418 by each given program or shared library</para>
[093b0e8]419 <indexterm zone="ch-system-eglibc ldd">
[3f8be484]420 <primary sortas="b-ldd">ldd</primary>
421 </indexterm>
422 </listitem>
423 </varlistentry>
424
425 <varlistentry id="lddlibc4">
426 <term><command>lddlibc4</command></term>
427 <listitem>
428 <para>Assists <command>ldd</command> with object files</para>
[093b0e8]429 <indexterm zone="ch-system-eglibc lddlibc4">
[3f8be484]430 <primary sortas="b-lddlibc4">lddlibc4</primary>
431 </indexterm>
432 </listitem>
433 </varlistentry>
434
435 <varlistentry id="locale">
436 <term><command>locale</command></term>
437 <listitem>
438 <para>Tells the compiler to enable or disable the use of POSIX locales
439 for built-in operations</para>
[093b0e8]440 <indexterm zone="ch-system-eglibc locale">
[3f8be484]441 <primary sortas="b-locale">locale</primary>
442 </indexterm>
443 </listitem>
444 </varlistentry>
445
446 <varlistentry id="localedef">
447 <term><command>localedef</command></term>
448 <listitem>
449 <para>Compiles locale specifications</para>
[093b0e8]450 <indexterm zone="ch-system-eglibc localedef">
[3f8be484]451 <primary sortas="b-localedef">localedef</primary>
452 </indexterm>
453 </listitem>
454 </varlistentry>
455
456 <varlistentry id="mtrace">
457 <term><command>mtrace</command></term>
458 <listitem>
459 <para>Reads and interprets a memory trace file and
460 displays a summary in human-readable format</para>
[093b0e8]461 <indexterm zone="ch-system-eglibc mtrace">
[3f8be484]462 <primary sortas="b-mtrace">mtrace</primary>
463 </indexterm>
464 </listitem>
465 </varlistentry>
466
467 <varlistentry id="nscd">
468 <term><command>nscd</command></term>
469 <listitem>
470 <para>A daemon that provides a cache for the most common name
471 service requests</para>
[093b0e8]472 <indexterm zone="ch-system-eglibc nscd">
[3f8be484]473 <primary sortas="b-nscd">nscd</primary>
474 </indexterm>
475 </listitem>
476 </varlistentry>
477
478 <varlistentry id="pcprofiledump">
479 <term><command>pcprofiledump</command></term>
480 <listitem>
481 <para>Dumps information generated by PC profiling</para>
[093b0e8]482 <indexterm zone="ch-system-eglibc pcprofiledump">
[3f8be484]483 <primary sortas="b-pcprofiledump">pcprofiledump</primary>
484 </indexterm>
485 </listitem>
486 </varlistentry>
487
488 <varlistentry id="pt_chown">
489 <term><command>pt_chown</command></term>
490 <listitem>
491 <para>A helper program for <command>grantpt</command> to set the owner,
492 group and access permissions of a slave pseudo terminal</para>
[093b0e8]493 <indexterm zone="ch-system-eglibc pt_chown">
[3f8be484]494 <primary sortas="b-pt_chown">pt_chown</primary>
495 </indexterm>
496 </listitem>
497 </varlistentry>
498
499 <varlistentry id="rpcgen">
500 <term><command>rpcgen</command></term>
501 <listitem>
502 <para>Generates C code to implement the Remote Procecure Call (RPC)
503 protocol</para>
[093b0e8]504 <indexterm zone="ch-system-eglibc rpcgen">
[3f8be484]505 <primary sortas="b-rpcgen">rpcgen</primary>
506 </indexterm>
507 </listitem>
508 </varlistentry>
509
510 <varlistentry id="rpcinfo">
511 <term><command>rpcinfo</command></term>
512 <listitem>
513 <para>Makes an RPC call to an RPC server</para>
[093b0e8]514 <indexterm zone="ch-system-eglibc rpcinfo">
[3f8be484]515 <primary sortas="b-rpcinfo">rpcinfo</primary>
516 </indexterm>
517 </listitem>
518 </varlistentry>
519
520 <varlistentry id="sln">
521 <term><command>sln</command></term>
522 <listitem>
[7087cbc]523 <para>A statically linked program that creates symbolic links</para>
[093b0e8]524 <indexterm zone="ch-system-eglibc sln">
[3f8be484]525 <primary sortas="b-sln">sln</primary>
526 </indexterm>
527 </listitem>
528 </varlistentry>
529
530 <varlistentry id="sprof">
531 <term><command>sprof</command></term>
532 <listitem>
533 <para>Reads and displays shared object profiling data</para>
[093b0e8]534 <indexterm zone="ch-system-eglibc sprof">
[3f8be484]535 <primary sortas="b-sprof">sprof</primary>
536 </indexterm>
537 </listitem>
538 </varlistentry>
539
540 <varlistentry id="tzselect">
541 <term><command>tzselect</command></term>
542 <listitem>
543 <para>Asks the user about the location of the
544 system and reports the corresponding time zone description</para>
[093b0e8]545 <indexterm zone="ch-system-eglibc tzselect">
[3f8be484]546 <primary sortas="b-tzselect">tzselect</primary>
547 </indexterm>
548 </listitem>
549 </varlistentry>
550
551 <varlistentry id="xtrace">
552 <term><command>xtrace</command></term>
553 <listitem>
554 <para>Traces the execution of a program by
555 printing the currently executed function</para>
[093b0e8]556 <indexterm zone="ch-system-eglibc xtrace">
[3f8be484]557 <primary sortas="b-xtrace">xtrace</primary>
558 </indexterm>
559 </listitem>
560 </varlistentry>
561
562 <varlistentry id="zdump">
563 <term><command>zdump</command></term>
564 <listitem>
565 <para>The time zone dumper</para>
[093b0e8]566 <indexterm zone="ch-system-eglibc zdump">
[3f8be484]567 <primary sortas="b-zdump">zdump</primary>
568 </indexterm>
569 </listitem>
570 </varlistentry>
571
572 <varlistentry id="zic">
573 <term><command>zic</command></term>
574 <listitem>
575 <para>The time zone compiler</para>
[093b0e8]576 <indexterm zone="ch-system-eglibc zic">
[3f8be484]577 <primary sortas="b-zic">zic</primary>
578 </indexterm>
579 </listitem>
580 </varlistentry>
581
582 <varlistentry id="ld.so">
583 <term><filename class="libraryfile">ld.so</filename></term>
584 <listitem>
585 <para>The helper program for shared library executables</para>
[093b0e8]586 <indexterm zone="ch-system-eglibc ld.so">
[3f8be484]587 <primary sortas="c-ld.so">ld.so</primary>
588 </indexterm>
589 </listitem>
590 </varlistentry>
591
592 <varlistentry id="libBrokenLocale">
593 <term><filename class="libraryfile">libBrokenLocale</filename></term>
594 <listitem>
595 <para>Used by programs, such as Mozilla, to solve broken locales</para>
[093b0e8]596 <indexterm zone="ch-system-eglibc libBrokenLocale">
[3f8be484]597 <primary sortas="c-libBrokenLocale">libBrokenLocale</primary>
598 </indexterm>
599 </listitem>
600 </varlistentry>
601
602 <varlistentry id="libSegFault">
603 <term><filename class="libraryfile">libSegFault</filename></term>
604 <listitem>
605 <para>The segmentation fault signal handler</para>
[093b0e8]606 <indexterm zone="ch-system-eglibc libSegFault">
[3f8be484]607 <primary sortas="c-libSegFault">libSegFault</primary>
608 </indexterm>
609 </listitem>
610 </varlistentry>
611
612 <varlistentry id="libanl">
613 <term><filename class="libraryfile">libanl</filename></term>
614 <listitem>
615 <para>An asynchronous name lookup library</para>
[093b0e8]616 <indexterm zone="ch-system-eglibc libanl">
[3f8be484]617 <primary sortas="c-libanl">libanl</primary>
618 </indexterm>
619 </listitem>
620 </varlistentry>
621
622 <varlistentry id="libbsd-compat">
623 <term><filename class="libraryfile">libbsd-compat</filename></term>
624 <listitem>
625 <para>Provides the portability needed
626 in order to run certain Berkey Software Distribution (BSD) programs
627 under Linux</para>
[093b0e8]628 <indexterm zone="ch-system-eglibc libbsd-compat">
[3f8be484]629 <primary sortas="c-libbsd-compat">libbsd-compat</primary>
630 </indexterm>
631 </listitem>
632 </varlistentry>
633
634 <varlistentry id="libc">
635 <term><filename class="libraryfile">libc</filename></term>
636 <listitem>
637 <para>The main C library</para>
[093b0e8]638 <indexterm zone="ch-system-eglibc libc">
[3f8be484]639 <primary sortas="c-libc">libc</primary>
640 </indexterm>
641 </listitem>
642 </varlistentry>
643
[188b6b2]644 <varlistentry id="libcidn">
645 <term><filename class="libraryfile">libcidn</filename></term>
646 <listitem>
647 <para>Used internally by EGLIBC for handling internationalized domain
648 names in the <function>getaddrinfo()</function> function</para>
649 <indexterm zone="ch-system-eglibc libcidn">
650 <primary sortas="c-libcidn">libcidn</primary>
651 </indexterm>
652 </listitem>
653 </varlistentry>
654
[3f8be484]655 <varlistentry id="libcrypt">
656 <term><filename class="libraryfile">libcrypt</filename></term>
657 <listitem>
658 <para>The cryptography library</para>
[093b0e8]659 <indexterm zone="ch-system-eglibc libcrypt">
[3f8be484]660 <primary sortas="c-libcrypt">libcrypt</primary>
661 </indexterm>
662 </listitem>
663 </varlistentry>
664
665 <varlistentry id="libdl">
666 <term><filename class="libraryfile">libdl</filename></term>
667 <listitem>
668 <para>The dynamic linking interface library</para>
[093b0e8]669 <indexterm zone="ch-system-eglibc libdl">
[3f8be484]670 <primary sortas="c-libdl">libdl</primary>
671 </indexterm>
672 </listitem>
673 </varlistentry>
674
675 <varlistentry id="libg">
676 <term><filename class="libraryfile">libg</filename></term>
677 <listitem>
678 <para>A runtime library for <command>g++</command></para>
[093b0e8]679 <indexterm zone="ch-system-eglibc libg">
[3f8be484]680 <primary sortas="c-libg">libg</primary>
681 </indexterm>
682 </listitem>
683 </varlistentry>
684
685 <varlistentry id="libieee">
686 <term><filename class="libraryfile">libieee</filename></term>
687 <listitem>
688 <para>The Institute of Electrical and Electronic Engineers (IEEE)
689 floating point library</para>
[093b0e8]690 <indexterm zone="ch-system-eglibc libieee">
[3f8be484]691 <primary sortas="c-libieee">libieee</primary>
692 </indexterm>
693 </listitem>
694 </varlistentry>
695
696 <varlistentry id="libm">
697 <term><filename class="libraryfile">libm</filename></term>
698 <listitem>
699 <para>The mathematical library</para>
[093b0e8]700 <indexterm zone="ch-system-eglibc libm">
[3f8be484]701 <primary sortas="c-libm">libm</primary>
702 </indexterm>
703 </listitem>
704 </varlistentry>
705
706 <varlistentry id="libmcheck">
707 <term><filename class="libraryfile">libmcheck</filename></term>
708 <listitem>
709 <para>Contains code run at boot</para>
[093b0e8]710 <indexterm zone="ch-system-eglibc libmcheck">
[3f8be484]711 <primary sortas="c-libmcheck">libmcheck</primary>
712 </indexterm>
713 </listitem>
714 </varlistentry>
715
716 <varlistentry id="libmemusage">
717 <term><filename class="libraryfile">libmemusage</filename></term>
718 <listitem>
[093b0e8]719 <para>Used by <command>memusage</command> (included in EGLIBC, but
[7087cbc]720 not built in a base CLFS system as it has additional dependencies)
721 to help collect information about the memory usage of a program</para>
[093b0e8]722 <indexterm zone="ch-system-eglibc libmemusage">
[3f8be484]723 <primary sortas="c-libmemusage">libmemusage</primary>
724 </indexterm>
725 </listitem>
726 </varlistentry>
727
728 <varlistentry id="libnsl">
729 <term><filename class="libraryfile">libnsl</filename></term>
730 <listitem>
731 <para>The network services library</para>
[093b0e8]732 <indexterm zone="ch-system-eglibc libnsl">
[3f8be484]733 <primary sortas="c-libnsl">libnsl</primary>
734 </indexterm>
735 </listitem>
736 </varlistentry>
737
738 <varlistentry id="libnss">
739 <term><filename class="libraryfile">libnss</filename></term>
740 <listitem>
741 <para>The Name Service Switch libraries, containing functions for
742 resolving host names, user names, group names, aliases, services,
743 protocols, etc.</para>
[093b0e8]744 <indexterm zone="ch-system-eglibc libnss">
[3f8be484]745 <primary sortas="c-libnss">libnss</primary>
746 </indexterm>
747 </listitem>
748 </varlistentry>
749
750 <varlistentry id="libpcprofile">
751 <term><filename class="libraryfile">libpcprofile</filename></term>
752 <listitem>
753 <para>Contains profiling functions used to track the amount of CPU
754 time spent in specific source code lines</para>
[093b0e8]755 <indexterm zone="ch-system-eglibc libpcprofile">
[3f8be484]756 <primary sortas="c-libpcprofile">libpcprofile</primary>
757 </indexterm>
758 </listitem>
759 </varlistentry>
760
761 <varlistentry id="libpthread">
762 <term><filename class="libraryfile">libpthread</filename></term>
763 <listitem>
764 <para>The POSIX threads library</para>
[093b0e8]765 <indexterm zone="ch-system-eglibc libpthread">
[3f8be484]766 <primary sortas="c-libpthread">libpthread</primary>
767 </indexterm>
768 </listitem>
769 </varlistentry>
770
771 <varlistentry id="libresolv">
772 <term><filename class="libraryfile">libresolv</filename></term>
773 <listitem>
774 <para>Contains functions for creating, sending, and interpreting
775 packets to the Internet domain name servers</para>
[093b0e8]776 <indexterm zone="ch-system-eglibc libresolv">
[3f8be484]777 <primary sortas="c-libresolv">libresolv</primary>
778 </indexterm>
779 </listitem>
780 </varlistentry>
781
782 <varlistentry id="librpcsvc">
783 <term><filename class="libraryfile">librpcsvc</filename></term>
784 <listitem>
785 <para>Contains functions providing miscellaneous RPC services</para>
[093b0e8]786 <indexterm zone="ch-system-eglibc librpcsvc">
[3f8be484]787 <primary sortas="c-librpcsvc">librpcsvc</primary>
788 </indexterm>
789 </listitem>
790 </varlistentry>
791
792 <varlistentry id="librt">
793 <term><filename class="libraryfile">librt</filename></term>
794 <listitem>
795 <para>Contains functions providing most of the interfaces specified by
796 the POSIX.1b Realtime Extension</para>
[093b0e8]797 <indexterm zone="ch-system-eglibc librt">
[3f8be484]798 <primary sortas="c-librt">librt</primary>
799 </indexterm>
800 </listitem>
801 </varlistentry>
802
803 <varlistentry id="libthread_db">
804 <term><filename class="libraryfile">libthread_db</filename></term>
805 <listitem>
806 <para>Contains functions useful for
807 building debuggers for multi-threaded programs</para>
[093b0e8]808 <indexterm zone="ch-system-eglibc libthread_db">
[3f8be484]809 <primary sortas="c-libthread_db">libthread_db</primary>
810 </indexterm>
811 </listitem>
812 </varlistentry>
813
814 <varlistentry id="libutil">
815 <term><filename class="libraryfile">libutil</filename></term>
816 <listitem>
817 <para>Contains code for <quote>standard</quote> functions used in
818 many different Unix utilities</para>
[093b0e8]819 <indexterm zone="ch-system-eglibc libutil">
[3f8be484]820 <primary sortas="c-libutil">libutil</primary>
821 </indexterm>
822 </listitem>
823 </varlistentry>
824
825 </variablelist>
826
827 </sect2>
828
829</sect1>
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