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git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@11482 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689
153 lines
4.4 KiB
XML
153 lines
4.4 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-bc" role="wrap">
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<?dbhtml filename="bc.html"?>
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<sect1info condition="script">
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<productname>bc</productname>
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<productnumber>&bc-version;</productnumber>
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<address>&bc-url;</address>
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</sect1info>
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<title>Bc-&bc-version;</title>
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<indexterm zone="ch-system-bc">
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<primary sortas="a-Bc">Bc</primary>
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</indexterm>
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<sect2 role="package">
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<title/>
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<para>The Bc package contains an arbitrary precision numeric processing
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language.</para>
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<segmentedlist>
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<segtitle>&buildtime;</segtitle>
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<segtitle>&diskspace;</segtitle>
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<seglistitem>
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<seg>&bc-ch6-sbu;</seg>
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<seg>&bc-ch6-du;</seg>
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</seglistitem>
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</segmentedlist>
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</sect2>
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<sect2 role="installation">
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<title>Installation of Bc</title>
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<para>First, change an internal script to use <command>sed</command> instead
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of <command>ed</command>:</para>
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<screen><userinput remap="pre">cat > bc/fix-libmath_h << "EOF"
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#! /bin/bash
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sed -e '1 s/^/{"/' \
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-e 's/$/",/' \
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-e '2,$ s/^/"/' \
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-e '$ d' \
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-i libmath.h
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sed -e '$ s/$/0}/' \
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-i libmath.h
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EOF</userinput></screen>
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<para>Create temporary symbolic links so the package can find
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the readline library and confirm that its required libncurses
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library is available. Even though the libraries are in /tools/lib
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at this point, the system will use /usr/lib at the end of
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this chapter.</para>
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<screen><userinput remap="pre">ln -sv /tools/lib/libncursesw.so.6 /usr/lib/libncursesw.so.6
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ln -sfv libncursesw.so.6 /usr/lib/libncurses.so</userinput></screen>
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<para>Fix an issue in <command>configure</command> due to missing
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files in the early stages of LFS:</para>
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<screen><userinput remap="pre">sed -i -e '/flex/s/as_fn_error/: ;; # &/' configure</userinput></screen>
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<para>Prepare Bc for compilation:</para>
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<screen><userinput remap="configure">./configure --prefix=/usr \
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--with-readline \
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--mandir=/usr/share/man \
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--infodir=/usr/share/info</userinput></screen>
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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>--with-readline</parameter></term>
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<listitem>
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<para>This option tells Bc to use the <filename
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class="libraryfile">readline</filename> library that is already
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installed on the system rather than using its own readline
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version.</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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<para>To test bc, run the commands below. There is quite a bit of output,
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so you may want to redirect it to a file. There are a very small percentage
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of tests (10 of 12,144) that will indicate a round off error at the last
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digit.</para>
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<screen><userinput remap="test">echo "quit" | ./bc/bc -l Test/checklib.b</userinput></screen>
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<para>Install the package:</para>
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<screen><userinput remap="install">make install</userinput></screen>
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</sect2>
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<sect2 id="contents-bc" role="content">
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<title>Contents of Bc</title>
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<segmentedlist>
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<segtitle>Installed programs</segtitle>
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<seglistitem>
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<seg>bc and dc</seg>
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</seglistitem>
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</segmentedlist>
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<variablelist>
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<bridgehead renderas="sect3">Short Descriptions</bridgehead>
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<?dbfo list-presentation="list"?>
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<?dbhtml list-presentation="table"?>
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<varlistentry id="bc">
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<term><command>bc</command></term>
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<listitem>
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<para>A command line calculator</para>
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<indexterm zone="ch-system-bc bc">
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<primary sortas="b-bc">bc</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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<varlistentry id="dc">
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<term><command>dc</command></term>
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<listitem>
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<para>A reverse-polish command line calculator</para>
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<indexterm zone="ch-system-bc dc">
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<primary sortas="b-dc">dc</primary>
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</indexterm>
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</listitem>
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</varlistentry>
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</variablelist>
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</sect2>
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</sect1>
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