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206 lines
6.4 KiB
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta http-equiv="Content-Type" content=
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"application/xhtml+xml; charset=utf-8" />
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<title>
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6.37. Bc-1.06.95
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</title>
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<link rel="stylesheet" type="text/css" href="../stylesheets/lfs.css" />
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<meta name="generator" content="DocBook XSL Stylesheets V1.78.1" />
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</head>
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<body class="lfs" id="lfs-7.7-systemd">
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<div class="navheader">
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<h4>
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Linux From Scratch - Version 7.7-systemd
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</h4>
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<h3>
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Chapter 6. Installing Basic System Software
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</h3>
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<ul>
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<li class="prev">
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<a accesskey="p" href="bash.html" title="Bash-4.3.30">Prev</a>
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Bash-4.3.30
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<a accesskey="n" href="libtool.html" title="Libtool-2.4.6">Next</a>
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Libtool-2.4.6
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<a accesskey="u" href="chapter06.html" title=
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"Linux From Scratch - Version 7.7-systemd">Home</a>
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</div>
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<div class="wrap" lang="en" xml:lang="en">
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<h1 class="sect1">
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<a id="ch-system-bc" name="ch-system-bc"></a>6.37. Bc-1.06.95
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</h1>
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<div class="package" lang="en" xml:lang="en">
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<p>
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The Bc package contains an arbitrary precision numeric processing
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language.
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</p>
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<div class="segmentedlist">
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<div class="seglistitem">
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<div class="seg">
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<strong class="segtitle">Approximate build time:</strong>
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<span class="segbody">0.1 SBU</span>
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</div>
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<div class="seg">
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<strong class="segtitle">Required disk space:</strong>
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<span class="segbody">4.0 MB</span>
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</div>
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</div>
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</div>
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</div>
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<div class="installation" lang="en" xml:lang="en">
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<h2 class="sect2">
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6.37.1. Installation of Bc
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</h2>
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<p>
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First, fix some minor memory leaks in the code:
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</p>
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<pre class="userinput">
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<kbd class="command">patch -Np1 -i ../bc-1.06.95-memory_leak-1.patch</kbd>
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</pre>
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<p>
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Prepare Bc for compilation:
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</p>
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<pre class="userinput">
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<kbd class="command">./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</kbd>
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</pre>
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<div class="variablelist">
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<p class="title">
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<strong>The meaning of the configure options:</strong>
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</p>
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<dl class="variablelist">
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<dt>
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<span class="term"><em class=
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"parameter"><code>--with-readline</code></em></span>
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</dt>
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<dd>
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<p>
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This option tells Bc to use the <code class=
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"filename">readline</code> library that is already installed
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on the system rather than using its own readline version.
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</p>
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</dd>
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</dl>
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</div>
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<p>
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Compile the package:
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</p>
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<pre class="userinput">
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<kbd class="command">make</kbd>
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</pre>
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<p>
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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
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percentage of tests (10 of 12,144) that will indicate a roundoff
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error at the last digit.
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</p>
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<pre class="userinput">
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<kbd class="command">echo "quit" | ./bc/bc -l Test/checklib.b</kbd>
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</pre>
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<p>
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Install the package:
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</p>
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<pre class="userinput">
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<kbd class="command">make install</kbd>
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</pre>
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</div>
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<div class="content" lang="en" xml:lang="en">
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<h2 class="sect2">
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<a id="contents-bc" name="contents-bc"></a>6.37.2. Contents of Bc
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</h2>
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<div class="segmentedlist">
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<div class="seglistitem">
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<div class="seg">
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<strong class="segtitle">Installed programs:</strong>
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<span class="segbody">bc and dc</span>
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</div>
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</div>
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</div>
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<div class="variablelist">
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<h3>
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Short Descriptions
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</h3>
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<table border="0" class="variablelist">
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<colgroup>
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<col align="left" valign="top" />
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<col />
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</colgroup>
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<tbody>
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<tr>
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<td>
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<p>
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<a id="bc" name="bc"></a><span class="term"><span class=
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"command"><strong>bc</strong></span></span>
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</p>
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</td>
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<td>
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<p>
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is a command line calculator
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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<a id="dc" name="dc"></a><span class="term"><span class=
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"command"><strong>dc</strong></span></span>
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</p>
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</td>
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<td>
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<p>
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is a reverse-polish command line calculator
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</p>
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</td>
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</tr>
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</tbody>
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</table>
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</div>
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</div>
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</div>
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<div class="navfooter">
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<ul>
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<li class="prev">
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<a accesskey="p" href="bash.html" title="Bash-4.3.30">Prev</a>
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Bash-4.3.30
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<p>
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Libtool-2.4.6
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<li class="up">
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<a accesskey="u" href="chapter06.html" title=
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"Chapter 6. Installing Basic System Software">Up</a>
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