lfs-book-zh_CN/chapter05/grep.xml

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  <!ENTITY % general-entities SYSTEM "../general.ent">
  %general-entities;
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<sect1 id="ch-tools-grep">
<title>Grep-&grep-version;</title>
<?dbhtml filename="grep.html"?>

<indexterm zone="ch-tools-grep">
<primary sortas="a-Grep">Grep</primary>
<secondary>tools</secondary></indexterm>

<xi:include xmlns:xi="http://www.w3.org/2003/XInclude" href="../chapter06/grep.xml" xpointer="xpointer(/sect1/para[1])"/>

<screen>&buildtime; 0.1 SBU
&diskspace; 5.8 MB</screen>

<xi:include xmlns:xi="http://www.w3.org/2003/XInclude" href="../chapter06/grep.xml" xpointer="xpointer(/sect1/para[2])"/>


<sect2>
<title>Installation of Grep</title>

<para>Prepare Grep for compilation:</para>

<screen><userinput>./configure --prefix=/tools \
    --disable-perl-regexp --with-included-regex</userinput></screen>

<para>The meaning of the configure options:</para>

<itemizedlist>
<listitem><para><userinput>--disable-perl-regexp</userinput>: This makes sure
that <command>grep</command> does not get linked against a PCRE library
that may be present on the host and would not be available once we enter the
chroot environment.</para></listitem>
<listitem><para><userinput>--with-included-regex</userinput>: This ensures that
Grep uses its internal regular expression code. Without this switch, Grep will
use the code from Glibc, which is known to be slightly buggy.</para></listitem>
</itemizedlist>

<para>Compile the programs:</para>

<screen><userinput>make</userinput></screen>

<para>(If you insist on testing the results, then issue:
<userinput>make check</userinput>.)</para>

<para>Then install them and their documentation:</para>

<screen><userinput>make install</userinput></screen>

</sect2>

<sect2><title> </title><para> </para>
<para>The details on this package are found in <xref linkend="contents-grep"/>.</para>
<para> </para></sect2>

</sect1>