mirror of
https://git.linuxfromscratch.org/lfs.git
synced 2025-02-07 06:41:59 +00:00
3bac16dcd4
I have:
2 FAIL
5092 PASS
67 UNSUPPORTED
16 XFAIL
4 XPASS
Let's not be too precise (or we'll need to explain the meaning of
"UNSUPPORTED"). IMO "over 5000" is fine (until we get 5500 tests).
982 lines
36 KiB
XML
982 lines
36 KiB
XML
<?xml version="1.0" encoding="ISO-8859-1"?>
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<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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<!ENTITY % general-entities SYSTEM "../general.ent">
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%general-entities;
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]>
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<sect1 id="ch-system-glibc" role="wrap">
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<?dbhtml filename="glibc.html"?>
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<sect1info condition="script">
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<productname>glibc</productname>
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<productnumber>&glibc-version;</productnumber>
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<address>&glibc-url;</address>
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</sect1info>
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<title>Glibc-&glibc-version;</title>
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<indexterm zone="ch-system-glibc">
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<primary sortas="a-Glibc">Glibc</primary>
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</indexterm>
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<sect2 role="package">
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<title/>
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<para>The Glibc package contains the main C library. This library provides
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the basic routines for allocating memory, searching directories, opening and
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closing files, reading and writing files, string handling, pattern matching,
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arithmetic, and so on.</para>
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|
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<segmentedlist>
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<segtitle>&buildtime;</segtitle>
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<segtitle>&diskspace;</segtitle>
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|
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<seglistitem>
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<seg>&glibc-fin-sbu;</seg>
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<seg>&glibc-fin-du;</seg>
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</seglistitem>
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</segmentedlist>
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|
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</sect2>
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|
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<sect2 role="installation">
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<title>Installation of Glibc</title>
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<!-- applied in 2.35 (commit b805aebd42364fe696e417808a700fdb9800c9e8)
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<para>First, fix a security problem identified upstream:</para>
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<screen><userinput remap="pre">sed -e '/NOTIFY_REMOVED)/s/)/ \&\& data.attr != NULL)/' \
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-i sysdeps/unix/sysv/linux/mq_notify.c</userinput></screen>
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-->
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<para>Some of the Glibc programs use the non-FHS compliant
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<filename class="directory">/var/db</filename> directory to store
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their runtime data. Apply the following patch to make such programs
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store their runtime data in the FHS-compliant locations:</para>
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<screen><userinput remap="pre">patch -Np1 -i ../&glibc-fhs-patch;</userinput></screen>
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<para>The Glibc documentation recommends building Glibc
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in a dedicated build directory:</para>
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<screen><userinput remap="pre">mkdir -v build
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cd build</userinput></screen>
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<para>Ensure that the <command>ldconfig</command> and <command>sln</command>
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utilities will be installed into
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<filename class="directory">/usr/sbin</filename>:</para>
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<screen><userinput remap="pre">echo "rootsbindir=/usr/sbin" > configparms</userinput></screen>
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<para>Prepare Glibc for compilation:</para>
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<screen><userinput remap="configure">../configure --prefix=/usr \
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--disable-werror \
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--enable-kernel=&min-kernel; \
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--enable-stack-protector=strong \
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--with-headers=/usr/include \
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libc_cv_slibdir=/usr/lib</userinput></screen>
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|
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<variablelist>
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<title>The meaning of the configure options:</title>
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<varlistentry>
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<term><parameter>--disable-werror</parameter></term>
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<listitem>
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<para>This option disables the -Werror option passed to
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GCC. This is necessary for running the test suite.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>--enable-kernel=&min-kernel;</parameter></term>
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<listitem>
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<para>This option tells the build system that this glibc may
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be used with kernels as old as &min-kernel;. This means generating
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workarounds in case a system call introduced in a later version
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cannot be used.</para>
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</listitem>
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</varlistentry>
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|
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<varlistentry>
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<term><parameter>--enable-stack-protector=strong</parameter></term>
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<listitem>
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|
<para>This option increases system security by adding
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extra code to check for buffer overflows, such as stack
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smashing attacks.</para>
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</listitem>
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</varlistentry>
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<!-- do we need this one? -->
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<varlistentry>
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<term><parameter>--with-headers=/usr/include</parameter></term>
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<listitem>
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<para>This option tells the build system where to find the
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kernel API headers.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>libc_cv_slibdir=/usr/lib</parameter></term>
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<listitem>
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<para>This variable sets the correct library for all
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systems. We do not want lib64 to be used.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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<para>Compile the package:</para>
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<screen><userinput remap="make">make</userinput></screen>
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<important>
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<para>In this section, the test suite for Glibc is considered critical.
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Do not skip it under any circumstance.</para>
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</important>
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<para>Generally a few tests do not pass. The test failures listed below
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are usually safe to ignore.</para>
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<!-- Use remap="make" here to work around a jhalfs issue. -->
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<!--<screen><userinput remap="make">case $(uname -m) in
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i?86) ln -sfnv $PWD/elf/ld-linux.so.2 /lib ;;
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x86_64) ln -sfnv $PWD/elf/ld-linux-x86-64.so.2 /lib ;;
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esac</userinput></screen>
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|
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<note><para>The symbolic link above is needed to run the tests at this
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stage of building in the chroot environment. It will be overwritten
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in the install phase below.</para></note>
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-->
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<screen><userinput remap="test">make check</userinput></screen>
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<para>You may see some test failures. The Glibc test suite is
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somewhat dependent on the host system. A few failures out of
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over 5000 tests can generally be ignored. This is a list of the
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most common issues seen for recent versions of LFS:</para>
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<itemizedlist>
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<listitem>
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<para><emphasis>io/tst-lchmod</emphasis>
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is known to fail in the LFS chroot environment.</para>
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</listitem>
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<listitem>
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<para><emphasis>misc/tst-ttyname</emphasis>
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is known to fail in the LFS chroot environment.</para>
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</listitem>
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<listitem>
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|
<para>The <emphasis>nss/tst-nss-files-hosts-long</emphasis>
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test is known to fail if the system has no non-loopback IP
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addresses.</para> <!-- PR 24816 -->
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</listitem>
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<!-- https://sourceware.org/pipermail/libc-alpha/2022-August/141567.html -->
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<listitem>
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<para>The <emphasis>stdlib/tst-arc4random-thread</emphasis>
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test is known to fail if the host kernel is relatively old.</para>
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</listitem>
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<listitem>
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<para>Some tests, for example
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<emphasis>nss/tst-nss-files-hosts-multi</emphasis>,
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are known to fail on relatively slow systems due to an internal
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timeout.</para>
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</listitem>
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|
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<!--
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<listitem>
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<para>The <emphasis>rt/tst-cputimer{1,2,3}</emphasis> tests depend on
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the host system kernel. Kernels 4.14.91–4.14.96,
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4.19.13–4.19.18, and 4.20.0–4.20.5 are known to
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cause these tests to fail.
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</para>
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</listitem>
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<listitem>
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<para>The math tests sometimes fail when running on
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systems where the CPU is not a relatively new Intel or
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AMD processor.</para>
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</listitem>
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-->
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</itemizedlist>
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<para>Though it is a harmless message, the install stage of Glibc will
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complain about the absence of <filename>/etc/ld.so.conf</filename>.
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Prevent this warning with:</para>
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<screen><userinput remap="install">touch /etc/ld.so.conf</userinput></screen>
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|
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<para>Fix the Makefile to skip an unneeded sanity check
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that fails in the LFS partial environment:
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|
</para>
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|
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<screen><userinput remap="install">sed '/test-installation/s@$(PERL)@echo not running@' -i ../Makefile</userinput></screen>
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<para>Install the package:</para>
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|
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<screen><userinput remap="install">make install</userinput></screen>
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|
|
<para>Fix hardcoded path to the executable loader in
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<command>ldd</command> script:</para>
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<screen><userinput remap="install">sed '/RTLDLIST=/s@/usr@@g' -i /usr/bin/ldd</userinput></screen>
|
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|
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<para>Install the configuration file and runtime directory for
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<command>nscd</command>:</para>
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<screen><userinput remap="install">cp -v ../nscd/nscd.conf /etc/nscd.conf
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mkdir -pv /var/cache/nscd</userinput></screen>
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|
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<para revision="systemd">Install the systemd support files for
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<command>nscd</command>:</para>
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|
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<screen revision="systemd"><userinput remap="install">install -v -Dm644 ../nscd/nscd.tmpfiles /usr/lib/tmpfiles.d/nscd.conf
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install -v -Dm644 ../nscd/nscd.service /usr/lib/systemd/system/nscd.service</userinput></screen>
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<para>Next, install the locales that can make the system respond in a
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different language. None of the locales are required, but if some of them
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are missing, the test suites of future packages would skip important
|
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testcases.</para>
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|
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<para>Individual locales can be installed using the
|
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<command>localedef</command> program. E.g., the second
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<command>localedef</command> command below combines the
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<filename>/usr/share/i18n/locales/cs_CZ</filename>
|
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charset-independent locale definition with the
|
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<filename>/usr/share/i18n/charmaps/UTF-8.gz</filename>
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charmap definition and appends the result to the
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<filename>/usr/lib/locale/locale-archive</filename> file.
|
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The following instructions will install the minimum set of
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locales necessary for the optimal coverage of tests:</para>
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<screen role="nodump"><userinput remap="locale-test">mkdir -pv /usr/lib/locale
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localedef -i POSIX -f UTF-8 C.UTF-8 2> /dev/null || true
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localedef -i cs_CZ -f UTF-8 cs_CZ.UTF-8
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localedef -i de_DE -f ISO-8859-1 de_DE
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localedef -i de_DE@euro -f ISO-8859-15 de_DE@euro
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localedef -i de_DE -f UTF-8 de_DE.UTF-8
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localedef -i el_GR -f ISO-8859-7 el_GR
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localedef -i en_GB -f ISO-8859-1 en_GB
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localedef -i en_GB -f UTF-8 en_GB.UTF-8
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localedef -i en_HK -f ISO-8859-1 en_HK
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localedef -i en_PH -f ISO-8859-1 en_PH
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localedef -i en_US -f ISO-8859-1 en_US
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localedef -i en_US -f UTF-8 en_US.UTF-8
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localedef -i es_ES -f ISO-8859-15 es_ES@euro
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localedef -i es_MX -f ISO-8859-1 es_MX
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localedef -i fa_IR -f UTF-8 fa_IR
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localedef -i fr_FR -f ISO-8859-1 fr_FR
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localedef -i fr_FR@euro -f ISO-8859-15 fr_FR@euro
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localedef -i fr_FR -f UTF-8 fr_FR.UTF-8
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localedef -i is_IS -f ISO-8859-1 is_IS
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localedef -i is_IS -f UTF-8 is_IS.UTF-8
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localedef -i it_IT -f ISO-8859-1 it_IT
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localedef -i it_IT -f ISO-8859-15 it_IT@euro
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localedef -i it_IT -f UTF-8 it_IT.UTF-8
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localedef -i ja_JP -f EUC-JP ja_JP
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localedef -i ja_JP -f SHIFT_JIS ja_JP.SJIS 2> /dev/null || true
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localedef -i ja_JP -f UTF-8 ja_JP.UTF-8
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localedef -i nl_NL@euro -f ISO-8859-15 nl_NL@euro
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localedef -i ru_RU -f KOI8-R ru_RU.KOI8-R
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localedef -i ru_RU -f UTF-8 ru_RU.UTF-8
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localedef -i se_NO -f UTF-8 se_NO.UTF-8
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localedef -i ta_IN -f UTF-8 ta_IN.UTF-8
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localedef -i tr_TR -f UTF-8 tr_TR.UTF-8
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localedef -i zh_CN -f GB18030 zh_CN.GB18030
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localedef -i zh_HK -f BIG5-HKSCS zh_HK.BIG5-HKSCS
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localedef -i zh_TW -f UTF-8 zh_TW.UTF-8</userinput></screen>
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<para>In addition, install the locale for your own country, language and
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character set.</para>
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<para>Alternatively, install all locales listed in the
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<filename>glibc-&glibc-version;/localedata/SUPPORTED</filename> file
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(it includes every locale listed above and many more) at once with the
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following time-consuming command:</para>
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<screen><userinput remap="locale-full">make localedata/install-locales</userinput></screen>
|
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<para>Then use the <command>localedef</command> command to create and
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install locales not listed in the
|
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<filename>glibc-&glibc-version;/localedata/SUPPORTED</filename> file
|
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when you need them. For instance, the following two locales are
|
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needed for some tests later in this chapter:</para>
|
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<screen role="nodump"><userinput remap="locale-full">localedef -i POSIX -f UTF-8 C.UTF-8 2> /dev/null || true
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localedef -i ja_JP -f SHIFT_JIS ja_JP.SJIS 2> /dev/null || true</userinput></screen>
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|
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<note><para>Glibc now uses libidn2 when resolving internationalized
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domain names. This is a run time dependency. If this capability
|
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is needed, the instructions for installing libidn2 are in the
|
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<ulink url="&blfs-book;general/libidn2.html">BLFS libidn2 page</ulink>.
|
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</para></note>
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|
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</sect2>
|
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|
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<sect2 id="conf-glibc" role="configuration">
|
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<title>Configuring Glibc</title>
|
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|
|
<indexterm zone="conf-glibc">
|
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<primary sortas="e-/etc/nsswitch.conf">/etc/nsswitch.conf</primary>
|
|
</indexterm>
|
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|
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<indexterm zone="conf-glibc">
|
|
<primary sortas="e-/etc/localtime">/etc/localtime</primary>
|
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</indexterm>
|
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|
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<sect3>
|
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<title>Adding nsswitch.conf</title>
|
|
|
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<para>The <filename>/etc/nsswitch.conf</filename> file needs to be created
|
|
because the Glibc defaults do not work well in a networked environment.
|
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</para>
|
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<para>Create a new file <filename>/etc/nsswitch.conf</filename> by running the
|
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following:</para>
|
|
|
|
<screen><userinput>cat > /etc/nsswitch.conf << "EOF"
|
|
<literal># Begin /etc/nsswitch.conf
|
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|
|
passwd: files
|
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group: files
|
|
shadow: files
|
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|
|
hosts: files dns
|
|
networks: files
|
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|
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protocols: files
|
|
services: files
|
|
ethers: files
|
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rpc: files
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|
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# End /etc/nsswitch.conf</literal>
|
|
EOF</userinput></screen>
|
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|
|
</sect3>
|
|
|
|
<sect3>
|
|
<title>Adding time zone data</title>
|
|
|
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<para>Install and set up the time zone data with the following:</para>
|
|
<screen><userinput>tar -xf ../../tzdata&tzdata-version;.tar.gz
|
|
|
|
ZONEINFO=/usr/share/zoneinfo
|
|
mkdir -pv $ZONEINFO/{posix,right}
|
|
|
|
for tz in etcetera southamerica northamerica europe africa antarctica \
|
|
asia australasia backward; do
|
|
zic -L /dev/null -d $ZONEINFO ${tz}
|
|
zic -L /dev/null -d $ZONEINFO/posix ${tz}
|
|
zic -L leapseconds -d $ZONEINFO/right ${tz}
|
|
done
|
|
|
|
cp -v zone.tab zone1970.tab iso3166.tab $ZONEINFO
|
|
zic -d $ZONEINFO -p America/New_York
|
|
unset ZONEINFO</userinput></screen>
|
|
|
|
<variablelist>
|
|
<title>The meaning of the zic commands:</title>
|
|
|
|
<varlistentry>
|
|
<term><parameter>zic -L /dev/null ...</parameter></term>
|
|
<listitem>
|
|
<para>This creates posix time zones without any leap seconds. It is
|
|
conventional to put these in both
|
|
<filename class="directory">zoneinfo</filename> and
|
|
<filename class="directory">zoneinfo/posix</filename>. It is
|
|
necessary to put the POSIX time zones in
|
|
<filename class="directory">zoneinfo</filename>, otherwise various
|
|
test-suites will report errors. On an embedded system, where space is
|
|
tight and you do not intend to ever update the time zones, you could save
|
|
1.9 MB by not using the <filename class="directory">posix</filename>
|
|
directory, but some applications or test-suites might produce some
|
|
failures.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><parameter>zic -L leapseconds ...</parameter></term>
|
|
<listitem>
|
|
<para>This creates right time zones, including leap seconds. On an
|
|
embedded system, where space is tight and you do not intend to
|
|
ever update the time zones, or care about the correct time, you could
|
|
save 1.9MB by omitting the <filename class="directory">right</filename>
|
|
directory.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><parameter>zic ... -p ...</parameter></term>
|
|
<listitem>
|
|
<para>This creates the <filename>posixrules</filename> file. We use
|
|
New York because POSIX requires the daylight savings time rules
|
|
to be in accordance with US rules.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
|
|
|
|
<para>One way to determine the local time zone is to run the following
|
|
script:</para>
|
|
|
|
<screen role="nodump"><userinput>tzselect</userinput></screen>
|
|
|
|
<para>After answering a few questions about the location, the script will
|
|
output the name of the time zone (e.g.,
|
|
<emphasis>America/Edmonton</emphasis>). There are also some other possible
|
|
time zones listed in <filename
|
|
class='directory'>/usr/share/zoneinfo</filename> such as
|
|
<emphasis>Canada/Eastern</emphasis> or <emphasis>EST5EDT</emphasis> that
|
|
are not identified by the script but can be used.</para>
|
|
|
|
<para>Then create the <filename>/etc/localtime</filename> file by
|
|
running:</para>
|
|
|
|
<screen><userinput>ln -sfv /usr/share/zoneinfo/<replaceable><xxx></replaceable> /etc/localtime</userinput></screen>
|
|
|
|
<para>Replace <replaceable><xxx></replaceable> with the name of the
|
|
time zone selected (e.g., Canada/Eastern).</para>
|
|
|
|
</sect3>
|
|
|
|
<sect3 id="conf-ld" role="configuration">
|
|
<title>Configuring the Dynamic Loader</title>
|
|
|
|
<indexterm zone="conf-ld">
|
|
<primary sortas="e-/etc/ld.so.conf">/etc/ld.so.conf</primary>
|
|
</indexterm>
|
|
|
|
<para>By default, the dynamic loader (<filename
|
|
class="libraryfile">/lib/ld-linux.so.2</filename>) searches through
|
|
<filename class="directory">/usr/lib</filename> for dynamic libraries
|
|
that are needed by programs as they are run. However, if there are
|
|
libraries in directories other than
|
|
<filename class="directory">/usr/lib</filename>, these need to be added
|
|
to the <filename>/etc/ld.so.conf</filename> file in order for the
|
|
dynamic loader to find them. Two directories that are commonly known
|
|
to contain additional libraries are <filename
|
|
class="directory">/usr/local/lib</filename> and <filename
|
|
class="directory">/opt/lib</filename>, so add those directories to the
|
|
dynamic loader's search path.</para>
|
|
|
|
<para>Create a new file <filename>/etc/ld.so.conf</filename> by running the
|
|
following:</para>
|
|
|
|
<screen><userinput>cat > /etc/ld.so.conf << "EOF"
|
|
<literal># Begin /etc/ld.so.conf
|
|
/usr/local/lib
|
|
/opt/lib
|
|
</literal>
|
|
EOF</userinput></screen>
|
|
|
|
<para>If desired, the dynamic loader can also search a directory and
|
|
include the contents of files found there. Generally the files in
|
|
this include directory are one line specifying the desired library path.
|
|
To add this capability run the following commands:</para>
|
|
|
|
<screen role="nodump"><userinput>cat >> /etc/ld.so.conf << "EOF"
|
|
<literal># Add an include directory
|
|
include /etc/ld.so.conf.d/*.conf
|
|
</literal>
|
|
EOF
|
|
mkdir -pv /etc/ld.so.conf.d</userinput></screen>
|
|
|
|
</sect3>
|
|
</sect2>
|
|
|
|
<sect2 id="contents-glibc" role="content">
|
|
<title>Contents of Glibc</title>
|
|
|
|
<segmentedlist>
|
|
<segtitle>Installed programs</segtitle>
|
|
<segtitle>Installed libraries</segtitle>
|
|
<segtitle>Installed directories</segtitle>
|
|
|
|
<seglistitem>
|
|
<seg>gencat, getconf, getent, iconv, iconvconfig, ldconfig,
|
|
ldd, lddlibc4,
|
|
ld.so (symlink to ld-linux-x86-64.so.2 or ld-linux.so.2),
|
|
locale, localedef, makedb, mtrace, nscd,
|
|
pcprofiledump, pldd, sln, sotruss, sprof, tzselect, xtrace,
|
|
zdump, and zic</seg>
|
|
<seg>ld-linux-x86-64.so.2, ld-linux.so.2,
|
|
libBrokenLocale.{a,so}, libanl.{a,so},
|
|
libc.{a,so}, libc_nonshared.a, libc_malloc_debug.so,
|
|
libcrypt.{a,so}, libdl.{a,so.2}, libg.a, libm.{a,so},
|
|
libmcheck.a, libmemusage.so, libmvec.{a,so}, libnsl.so.1,
|
|
libnss_compat.so, libnss_dns.so, libnss_files.so, libnss_hesiod.so,
|
|
libpcprofile.so, libpthread.{a,so.0},
|
|
libresolv.{a,so}, librt.{a,so.1},
|
|
libthread_db.so, and libutil.{a,so.1}</seg>
|
|
<seg>/usr/include/arpa, /usr/include/bits, /usr/include/gnu,
|
|
/usr/include/net, /usr/include/netash, /usr/include/netatalk,
|
|
/usr/include/netax25, /usr/include/neteconet, /usr/include/netinet,
|
|
/usr/include/netipx, /usr/include/netiucv, /usr/include/netpacket,
|
|
/usr/include/netrom, /usr/include/netrose, /usr/include/nfs,
|
|
/usr/include/protocols, /usr/include/rpc,
|
|
/usr/include/sys, /usr/lib/audit, /usr/lib/gconv, /usr/lib/locale,
|
|
/usr/libexec/getconf, /usr/share/i18n, /usr/share/zoneinfo,
|
|
/var/cache/nscd, and /var/lib/nss_db</seg>
|
|
</seglistitem>
|
|
</segmentedlist>
|
|
|
|
<variablelist>
|
|
<bridgehead renderas="sect3">Short Descriptions</bridgehead>
|
|
<?dbfo list-presentation="list"?>
|
|
<?dbhtml list-presentation="table"?>
|
|
|
|
<varlistentry id="gencat">
|
|
<term><command>gencat</command></term>
|
|
<listitem>
|
|
<para>Generates message catalogues</para>
|
|
<indexterm zone="ch-system-glibc gencat">
|
|
<primary sortas="b-gencat">gencat</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="getconf">
|
|
<term><command>getconf</command></term>
|
|
<listitem>
|
|
<para>Displays the system configuration values for file system
|
|
specific variables</para>
|
|
<indexterm zone="ch-system-glibc getconf">
|
|
<primary sortas="b-getconf">getconf</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="getent">
|
|
<term><command>getent</command></term>
|
|
<listitem>
|
|
<para>Gets entries from an administrative database</para>
|
|
<indexterm zone="ch-system-glibc getent">
|
|
<primary sortas="b-getent">getent</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="iconv">
|
|
<term><command>iconv</command></term>
|
|
<listitem>
|
|
<para>Performs character set conversion</para>
|
|
<indexterm zone="ch-system-glibc iconv">
|
|
<primary sortas="b-iconv">iconv</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="iconvconfig">
|
|
<term><command>iconvconfig</command></term>
|
|
<listitem>
|
|
<para>Creates fastloading <command>iconv</command> module configuration
|
|
files</para>
|
|
<indexterm zone="ch-system-glibc iconvconfig">
|
|
<primary sortas="b-iconvconfig">iconvconfig</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ldconfig">
|
|
<term><command>ldconfig</command></term>
|
|
<listitem>
|
|
<para>Configures the dynamic linker runtime bindings</para>
|
|
<indexterm zone="ch-system-glibc ldconfig">
|
|
<primary sortas="b-ldconfig">ldconfig</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ldd">
|
|
<term><command>ldd</command></term>
|
|
<listitem>
|
|
<para>Reports which shared libraries are required
|
|
by each given program or shared library</para>
|
|
<indexterm zone="ch-system-glibc ldd">
|
|
<primary sortas="b-ldd">ldd</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="lddlibc4">
|
|
<term><command>lddlibc4</command></term>
|
|
<listitem>
|
|
<para>Assists <command>ldd</command> with object files.
|
|
It does not exist on newer architectures like x86_64</para>
|
|
<indexterm zone="ch-system-glibc lddlibc4">
|
|
<primary sortas="b-lddlibc4">lddlibc4</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="locale">
|
|
<term><command>locale</command></term>
|
|
<listitem>
|
|
<para>Prints various information about the current locale</para>
|
|
<indexterm zone="ch-system-glibc locale">
|
|
<primary sortas="b-locale">locale</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="localedef">
|
|
<term><command>localedef</command></term>
|
|
<listitem>
|
|
<para>Compiles locale specifications</para>
|
|
<indexterm zone="ch-system-glibc localedef">
|
|
<primary sortas="b-localedef">localedef</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="makedb">
|
|
<term><command>makedb</command></term>
|
|
<listitem>
|
|
<para>Creates a simple database from textual input</para>
|
|
<indexterm zone="ch-system-glibc makedb">
|
|
<primary sortas="b-makedb">makedb</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="mtrace">
|
|
<term><command>mtrace</command></term>
|
|
<listitem>
|
|
<para>Reads and interprets a memory trace file and displays a summary
|
|
in human-readable format</para>
|
|
<indexterm zone="ch-system-glibc mtrace">
|
|
<primary sortas="b-mtrace">mtrace</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="nscd">
|
|
<term><command>nscd</command></term>
|
|
<listitem>
|
|
<para>A daemon that provides a cache for the most common name
|
|
service requests</para>
|
|
<indexterm zone="ch-system-glibc nscd">
|
|
<primary sortas="b-nscd">nscd</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="pcprofiledump">
|
|
<term><command>pcprofiledump</command></term>
|
|
<listitem>
|
|
<para>Dump information generated by PC profiling</para>
|
|
<indexterm zone="ch-system-glibc pcprofiledump">
|
|
<primary sortas="b-pcprofiledump">pcprofiledump</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="pldd">
|
|
<term><command>pldd</command></term>
|
|
<listitem>
|
|
<para>Lists dynamic shared objects used by running processes</para>
|
|
<indexterm zone="ch-system-glibc pldd">
|
|
<primary sortas="b-pldd">pldd</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="sln">
|
|
<term><command>sln</command></term>
|
|
<listitem>
|
|
<para>A statically linked <command>ln</command> program</para>
|
|
<indexterm zone="ch-system-glibc sln">
|
|
<primary sortas="b-sln">sln</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="sotruss">
|
|
<term><command>sotruss</command></term>
|
|
<listitem>
|
|
<para>Traces shared library procedure calls of a specified command</para>
|
|
<indexterm zone="ch-system-glibc sotruss">
|
|
<primary sortas="b-sotruss">sotruss</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="sprof">
|
|
<term><command>sprof</command></term>
|
|
<listitem>
|
|
<para>Reads and displays shared object profiling data</para>
|
|
<indexterm zone="ch-system-glibc sprof">
|
|
<primary sortas="b-sprof">sprof</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="tzselect">
|
|
<term><command>tzselect</command></term>
|
|
<listitem>
|
|
<para>Asks the user about the location of the system and reports
|
|
the corresponding time zone description</para>
|
|
<indexterm zone="ch-system-glibc tzselect">
|
|
<primary sortas="b-tzselect">tzselect</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="xtrace">
|
|
<term><command>xtrace</command></term>
|
|
<listitem>
|
|
<para>Traces the execution of a program by printing the currently
|
|
executed function</para>
|
|
<indexterm zone="ch-system-glibc xtrace">
|
|
<primary sortas="b-xtrace">xtrace</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="zdump">
|
|
<term><command>zdump</command></term>
|
|
<listitem>
|
|
<para>The time zone dumper</para>
|
|
<indexterm zone="ch-system-glibc zdump">
|
|
<primary sortas="b-zdump">zdump</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="zic">
|
|
<term><command>zic</command></term>
|
|
<listitem>
|
|
<para>The time zone compiler</para>
|
|
<indexterm zone="ch-system-glibc zic">
|
|
<primary sortas="b-zic">zic</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="ld.so">
|
|
<term><filename class="libraryfile">ld-*.so</filename></term>
|
|
<listitem>
|
|
<para>The helper program for shared library executables</para>
|
|
<indexterm zone="ch-system-glibc ld.so">
|
|
<primary sortas="c-ld.so">ld-&glibc-version;.so</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="libBrokenLocale">
|
|
<term><filename class="libraryfile">libBrokenLocale</filename></term>
|
|
<listitem>
|
|
<para>Used internally by Glibc as a gross hack to get broken programs
|
|
(e.g., some Motif applications) running. See comments in
|
|
<filename>glibc-&glibc-version;/locale/broken_cur_max.c</filename>
|
|
for more information</para>
|
|
<indexterm zone="ch-system-glibc libBrokenLocale">
|
|
<primary sortas="c-libBrokenLocale">libBrokenLocale</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="libanl">
|
|
<term><filename class="libraryfile">libanl</filename></term>
|
|
<listitem>
|
|
<para>An asynchronous name lookup library</para>
|
|
<indexterm zone="ch-system-glibc libanl">
|
|
<primary sortas="c-libanl">libanl</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="libc">
|
|
<term><filename class="libraryfile">libc</filename></term>
|
|
<listitem>
|
|
<para>The main C library</para>
|
|
<indexterm zone="ch-system-glibc libc">
|
|
<primary sortas="c-libc">libc</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="libc_malloc_debug">
|
|
<term><filename class="libraryfile">libc_malloc_debug</filename></term>
|
|
<listitem>
|
|
<para>Turns on memory allocation checking when preloaded</para>
|
|
<indexterm zone="ch-system-glibc libc_malloc_debug">
|
|
<primary sortas="c-libc_malloc_debug">libc_malloc_debug</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="libcrypt">
|
|
<term><filename class="libraryfile">libcrypt</filename></term>
|
|
<listitem>
|
|
<para>The cryptography library</para>
|
|
<indexterm zone="ch-system-glibc libcrypt">
|
|
<primary sortas="c-libcrypt">libcrypt</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="libdl">
|
|
<term><filename class="libraryfile">libdl</filename></term>
|
|
<listitem>
|
|
<para>Dummy library containing no functions. Previously was the
|
|
dynamic linking interface library, whose functions are now in
|
|
<filename class="libraryfile">libc</filename></para>
|
|
<indexterm zone="ch-system-glibc libdl">
|
|
<primary sortas="c-libdl">libdl</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="libg">
|
|
<term><filename class="libraryfile">libg</filename></term>
|
|
<listitem>
|
|
<para>Dummy library containing no functions. Previously was a runtime
|
|
library for <command>g++</command></para>
|
|
<indexterm zone="ch-system-glibc libg">
|
|
<primary sortas="c-libg">libg</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="libm">
|
|
<term><filename class="libraryfile">libm</filename></term>
|
|
<listitem>
|
|
<para>The mathematical library</para>
|
|
<indexterm zone="ch-system-glibc libm">
|
|
<primary sortas="c-libm">libm</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="libmvec">
|
|
<term><filename class="libraryfile">libmvec</filename></term>
|
|
<listitem>
|
|
<para>The vector math library, linked in as needed
|
|
when <filename class='libraryfile'>libm</filename> is used</para>
|
|
<indexterm zone="ch-system-glibc libmvec">
|
|
<primary sortas="c-libmvec">libmvec</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="libmcheck">
|
|
<term><filename class="libraryfile">libmcheck</filename></term>
|
|
<listitem>
|
|
<para>Turns on memory allocation checking when linked to</para>
|
|
<indexterm zone="ch-system-glibc libmcheck">
|
|
<primary sortas="c-libmcheck">libmcheck</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="libmemusage">
|
|
<term><filename class="libraryfile">libmemusage</filename></term>
|
|
<listitem>
|
|
<para>Used by <command>memusage</command> to help collect
|
|
information about the memory usage of a program</para>
|
|
<indexterm zone="ch-system-glibc libmemusage">
|
|
<primary sortas="c-libmemusage">libmemusage</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="libnsl">
|
|
<term><filename class="libraryfile">libnsl</filename></term>
|
|
<listitem>
|
|
<para>The network services library, now deprecated</para>
|
|
<indexterm zone="ch-system-glibc libnsl">
|
|
<primary sortas="c-libnsl">libnsl</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="libnss">
|
|
<term><filename class="libraryfile">libnss_*</filename></term>
|
|
<listitem>
|
|
<para>The Name Service Switch modules, containing functions for
|
|
resolving host names, user names, group names, aliases, services,
|
|
protocols, etc. Loaded by
|
|
<filename class='libraryfile'>libc</filename> according to the
|
|
configuration in <filename>/etc/nsswitch.conf</filename></para>
|
|
<indexterm zone="ch-system-glibc libnss">
|
|
<primary sortas="c-libnss">libnss_*</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="libpcprofile">
|
|
<term><filename class="libraryfile">libpcprofile</filename></term>
|
|
<listitem>
|
|
<para>Can be preloaded to PC profile an executable</para>
|
|
<indexterm zone="ch-system-glibc libpcprofile">
|
|
<primary sortas="c-libpcprofile">libpcprofile</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="libpthread">
|
|
<term><filename class="libraryfile">libpthread</filename></term>
|
|
<listitem>
|
|
<para>Dummy library containing no functions. Previously contained
|
|
functions providing most of the interfaces specified
|
|
by the POSIX.1b Realtime Extension, now the functions are in
|
|
<filename class="libraryfile">libc</filename></para>
|
|
<indexterm zone="ch-system-glibc libpthread">
|
|
<primary sortas="c-libpthread">libpthread</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="libresolv">
|
|
<term><filename class="libraryfile">libresolv</filename></term>
|
|
<listitem>
|
|
<para>Contains functions for creating, sending, and interpreting
|
|
packets to the Internet domain name servers</para>
|
|
<indexterm zone="ch-system-glibc libresolv">
|
|
<primary sortas="c-libresolv">libresolv</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="librt">
|
|
<term><filename class="libraryfile">librt</filename></term>
|
|
<listitem>
|
|
<para>Contains functions providing most of the interfaces specified
|
|
by the POSIX.1b Realtime Extension</para>
|
|
<indexterm zone="ch-system-glibc librt">
|
|
<primary sortas="c-librt">librt</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="libthread_db">
|
|
<term><filename class="libraryfile">libthread_db</filename></term>
|
|
<listitem>
|
|
<para>Contains functions useful for building debuggers for
|
|
multi-threaded programs</para>
|
|
<indexterm zone="ch-system-glibc libthread_db">
|
|
<primary sortas="c-libthread_db">libthread_db</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry id="libutil">
|
|
<term><filename class="libraryfile">libutil</filename></term>
|
|
<listitem>
|
|
<para>Dummy library containing no functions. Previously contained
|
|
code for <quote>standard</quote> functions used in
|
|
many different Unix utilities. These functions are now in
|
|
<filename class="libraryfile">libc</filename></para>
|
|
<indexterm zone="ch-system-glibc libutil">
|
|
<primary sortas="c-libutil">libutil</primary>
|
|
</indexterm>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
</variablelist>
|
|
|
|
</sect2>
|
|
|
|
</sect1>
|