source: general/genutils/bc.xml@ 1039de3

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE sect1 PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
   "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd" [
  <!ENTITY % general-entities SYSTEM "../../general.ent">
  %general-entities;

  <!ENTITY bc-download-http "http://ftp.gnu.org/gnu/bc/bc-&bc-version;.tar.gz">
  <!ENTITY bc-download-ftp "ftp://ftp.gnu.org/gnu/bc/bc-&bc-version;.tar.gz">
  <!ENTITY bc-md5sum "d44b5dddebd8a7a7309aea6c36fda117">
  <!ENTITY bc-size "273 KB">
  <!ENTITY bc-buildsize "2.36 MB">
  <!ENTITY bc-time "less than 0.1 SBU (0.2 SBU if running the testsuite)">
]>

<sect1 id="bc" xreflabel="bc-&bc-version;">
  <?dbhtml filename="bc.html"?>

  <sect1info>
    <othername>$LastChangedBy$</othername>
    <date>$Date$</date>
    <keywordset>
      <keyword role="package">bc-&bc-version;.tar</keyword>
      <keyword role="ftpdir">bc</keyword>
    </keywordset>
  </sect1info>

  <title>Bc-&bc-version;</title>

  <indexterm zone="bc">
    <primary sortas="a-Bc">Bc</primary>
  </indexterm>

  <sect2 role="package">
    <title>Introduction to Bc</title>

    <para>The <application>bc</application> package contains
    an arbitrary precision numeric processing language.</para>

    <bridgehead renderas="sect3">Package Information</bridgehead>
    <itemizedlist spacing="compact">
      <listitem>
        <para>Download (HTTP): <ulink url="&bc-download-http;"/></para>
      </listitem>
      <listitem>
        <para>Download (FTP): <ulink url="&bc-download-ftp;"/></para>
      </listitem>
      <listitem>
        <para>Download MD5 sum: &bc-md5sum;</para>
      </listitem>
      <listitem>
        <para>Download size: &bc-size;</para>
      </listitem>
      <listitem>
        <para>Estimated disk space required: &bc-buildsize;</para>
      </listitem>
      <listitem>
        <para>Estimated build time: &bc-time;</para>
      </listitem>
    </itemizedlist>

    <para condition="html" role="usernotes">User Notes:
    <ulink url="&blfs-wiki;/bc"/></para>

  </sect2>

  <sect2 role="installation">
    <title>Installation of Bc</title>

    <para>Install <application>bc</application> by running the following commands:</para>

<screen><userinput>sed -i '/PROTO.*readline/d' bc/scan.l &amp;&amp;
sed -i '/flex -I8/s/8//' configure &amp;&amp;
sed -i '/stdlib/a #include &lt;string.h&gt;' lib/number.c &amp;&amp;
sed -i 's/program.*save/static &amp;/' bc/load.c &amp;&amp;
./configure --prefix=/usr --with-readline &amp;&amp;
make</userinput></screen>

    <para>To test <application>bc</application>, run the commands below.
    There is quite a bit of output, so you may want to redirect it to a file. 
    There are a very small percentage of tests (10 of 12,144) that will
    indicate a roundoff error at the last digit.</para>

<screen><userinput>echo "quit" | ./bc/bc -l Test/checklib.b</userinput></screen>

    <para>Now, as the <systemitem class="username">root</systemitem> user:</para>

<screen role="root"><userinput>make install</userinput></screen>

  </sect2>

  <sect2 role="commands">
    <title>Command Explanations</title>

    <para><command>sed -i '/PROTO.*readline/d' bc/scan.l</command>: This
    command fixes the <application>Readline</application> library call.</para>

    <para><command>sed -i '/flex -I8/s/8//' configure</command>: This
    command fixes the <application>Flex</application> invocation.</para>

    <para><command>sed -i '/stdlib/a #include &lt;string.h&gt;' lib/number.c</command>:
    This command inserts a missing header.</para>

    <para><command>sed -i 's/program.*save/static &amp;/' bc/load.c</command>:
    This command fixes a segfault when running <application>bc</application>
    with <command>bc -l</command>.</para>

    <para><parameter>--with-readline</parameter>: This option enables
    <application>Readline</application> support in interactive mode.</para>

  </sect2>

  <sect2 role="content">
    <title>Contents</title>

    <segmentedlist>
      <segtitle>Installed Programs</segtitle>
      <segtitle>Installed Libraries</segtitle>
      <segtitle>Installed Directories</segtitle>

      <seglistitem>
        <seg>bc and dc</seg>
        <seg>None</seg>
        <seg>None</seg>
      </seglistitem>
    </segmentedlist>

    <variablelist>
      <bridgehead renderas="sect3">Short Descriptions</bridgehead>
      <?dbfo list-presentation="list"?>
      <?dbhtml list-presentation="table"?>

      <varlistentry id="bc-prog">
        <term><command>bc</command></term>
        <listitem>
          <para>is a calculator.</para>
          <indexterm zone="bc bc-prog">
            <primary sortas="b-bc">bc</primary>
          </indexterm>
        </listitem>
      </varlistentry>

      <varlistentry id="dc">
        <term><command>dc</command></term>
        <listitem>
          <para>is a reverse-polish calculator.</para>
          <indexterm zone="bc dc">
            <primary sortas="b-dc">dc</primary>
          </indexterm>
        </listitem>
      </varlistentry>

    </variablelist>

  </sect2>

</sect1>