source: chapter06/bc.xml@ 474de8b1

10.0 10.0-rc1 10.1 10.1-rc1 11.0 11.0-rc1 11.0-rc2 11.0-rc3 9.0 9.0-rc1 9.1 9.1-rc1 cross-chap5 ml-11.0 multilib old-trunk trunk xry111/git-transition xry111/glibc-2.34 xry111/tester-nohack xry111/usr-move
Last change on this file since 474de8b1 was 474de8b1, checked in by Bruce Dubbs <bdubbs@…>, 3 years ago

Update bc option descriptions

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@11641 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

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1<?xml version="1.0" encoding="ISO-8859-1"?>
2<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
3 "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
4 <!ENTITY % general-entities SYSTEM "../general.ent">
5 %general-entities;
6]>
7
8<sect1 id="ch-system-bc" role="wrap">
9 <?dbhtml filename="bc.html"?>
10
11 <sect1info condition="script">
12 <productname>bc</productname>
13 <productnumber>&bc-version;</productnumber>
14 <address>&bc-url;</address>
15 </sect1info>
16
17 <title>Bc-&bc-version;</title>
18
19 <indexterm zone="ch-system-bc">
20 <primary sortas="a-Bc">Bc</primary>
21 </indexterm>
22
23 <sect2 role="package">
24 <title/>
25
26 <para>The Bc package contains an arbitrary precision numeric processing
27 language.</para>
28
29 <segmentedlist>
30 <segtitle>&buildtime;</segtitle>
31 <segtitle>&diskspace;</segtitle>
32
33 <seglistitem>
34 <seg>&bc-ch6-sbu;</seg>
35 <seg>&bc-ch6-du;</seg>
36 </seglistitem>
37 </segmentedlist>
38
39 </sect2>
40
41 <sect2 role="installation">
42 <title>Installation of Bc</title>
43<!--
44 <para>First, change an internal script to use <command>sed</command> instead
45 of <command>ed</command>:</para>
46
47<screen><userinput remap="pre">cat &gt; bc/fix-libmath_h &lt;&lt; "EOF"
48#! /bin/bash
49sed -e '1 s/^/{"/' \
50 -e 's/$/",/' \
51 -e '2,$ s/^/"/' \
52 -e '$ d' \
53 -i libmath.h
54
55sed -e '$ s/$/0}/' \
56 -i libmath.h
57EOF</userinput></screen>
58
59 <para>Create temporary symbolic links so the package can find
60 the readline library and confirm that its required libncurses
61 library is available. Even though the libraries are in /tools/lib
62 at this point, the system will use /usr/lib at the end of
63 this chapter.</para>
64
65<screen><userinput remap="pre">ln -sv /tools/lib/libncursesw.so.6 /usr/lib/libncursesw.so.6
66ln -sfv libncursesw.so.6 /usr/lib/libncurses.so</userinput></screen>
67
68 <para>Fix an issue in <command>configure</command> due to missing
69 files in the early stages of LFS:</para>
70
71<screen><userinput remap="pre">sed -i -e '/flex/s/as_fn_error/: ;; # &amp;/' configure</userinput></screen>
72-->
73 <para>Prepare Bc for compilation:</para>
74<!--
75<screen><userinput remap="configure">./configure - -prefix=/usr \
76 - -with-readline \
77 - -mandir=/usr/share/man \
78 - -infodir=/usr/share/info</userinput></screen>
79-->
80<screen><userinput remap="configure">PREFIX=/usr CC=gcc CFLAGS="-std=c99" ./configure.sh -G -O3</userinput></screen>
81
82 <variablelist>
83 <title>The meaning of the configure options:</title>
84<!--
85 <varlistentry>
86 <term><parameter>- -with-readline</parameter></term>
87 <listitem>
88 <para>This option tells Bc to use the <filename
89 class="libraryfile">readline</filename> library that is already
90 installed on the system rather than using its own readline
91 version.</para>
92 </listitem>
93 </varlistentry>
94-->
95 <varlistentry>
96 <term><parameter>CC=gcc CFLAGS="-std=c99"</parameter></term>
97 <listitem>
98 <para>These parameters specify the compiler and C standard to use.</para>
99 </listitem>
100 </varlistentry>
101
102 <varlistentry>
103 <term><parameter>-O3</parameter></term>
104 <listitem>
105 <para>Specify the optimization to use.</para>
106 </listitem>
107 </varlistentry>
108
109 <varlistentry>
110 <term><parameter>-G</parameter></term>
111 <listitem>
112 <para>Omit parts of the test suite that won't work
113 without a GNU bc present.</para>
114 </listitem>
115 </varlistentry>
116 </variablelist>
117
118 <para>Compile the package:</para>
119
120<screen><userinput remap="make">make</userinput></screen>
121<!--
122 <para>To test bc, run the commands below. There is quite a bit of output,
123 so you may want to redirect it to a file. There are a very small percentage
124 of tests (10 of 12,144) that will indicate a round off error at the last
125 digit.</para>
126
127<screen><userinput remap="test">echo "quit" | ./bc/bc -l Test/checklib.b</userinput></screen>
128-->
129
130 <para>To test bc, run:</para>
131
132<screen><userinput remap="test">make test</userinput></screen>
133
134
135 <para>Install the package:</para>
136
137<screen><userinput remap="install">make install</userinput></screen>
138
139 </sect2>
140
141 <sect2 id="contents-bc" role="content">
142 <title>Contents of Bc</title>
143
144 <segmentedlist>
145 <segtitle>Installed programs</segtitle>
146
147 <seglistitem>
148 <seg>bc and dc</seg>
149 </seglistitem>
150 </segmentedlist>
151
152 <variablelist>
153 <bridgehead renderas="sect3">Short Descriptions</bridgehead>
154 <?dbfo list-presentation="list"?>
155 <?dbhtml list-presentation="table"?>
156
157 <varlistentry id="bc">
158 <term><command>bc</command></term>
159 <listitem>
160 <para>A command line calculator</para>
161 <indexterm zone="ch-system-bc bc">
162 <primary sortas="b-bc">bc</primary>
163 </indexterm>
164 </listitem>
165 </varlistentry>
166
167 <varlistentry id="dc">
168 <term><command>dc</command></term>
169 <listitem>
170 <para>A reverse-polish command line calculator</para>
171 <indexterm zone="ch-system-bc dc">
172 <primary sortas="b-dc">dc</primary>
173 </indexterm>
174 </listitem>
175 </varlistentry>
176
177 </variablelist>
178
179 </sect2>
180
181</sect1>
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