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Diffstat (limited to 'chapter06/flex.xml')
| -rw-r--r-- | chapter06/flex.xml | 78 |
1 files changed, 70 insertions, 8 deletions
diff --git a/chapter06/flex.xml b/chapter06/flex.xml index 9772cfcf4..90282002b 100644 --- a/chapter06/flex.xml +++ b/chapter06/flex.xml @@ -3,13 +3,15 @@ <!ENTITY % general-entities SYSTEM "../general.ent"> %general-entities; ]> -<sect1 id="ch-system-flex" xreflabel="Flex" role="wrap"> +<sect1 id="ch-system-flex" role="wrap"> <title>Flex-&flex-version;</title> <?dbhtml filename="flex.html"?> <indexterm zone="ch-system-flex"><primary sortas="a-Flex">Flex</primary></indexterm> <sect2 role="package"><title/> +<para>The Flex package contains a utility for generating programs that +recognize patterns in text.</para> <segmentedlist> <segtitle>&buildtime;</segtitle> @@ -17,20 +19,28 @@ <seglistitem><seg>0.1 SBU</seg><seg>3.4 MB</seg></seglistitem> </segmentedlist> +<segmentedlist> +<segtitle>Flex installation depends on</segtitle> +<seglistitem><seg>Bash, Binutils, Bison, Coreutils, Diffutils, +GCC, Gettext, Glibc, Grep, M4, Make, and Sed</seg></seglistitem> +</segmentedlist> </sect2> <sect2 role="installation"> <title>Installation of Flex</title> -<para>Apply a patch:</para> +<para>Flex contains several known bugs. Fix these with the following patch:</para> <screen><userinput>patch -Np1 -i ../flex-&flex-version;-debian_fixes-2.patch</userinput></screen> -<para>Touch the man-page:</para> +<para>The GNU autotools detects that the Flex source code has been +modified by the previous patch and tries to update the manual page +accordingly. This does not work correctly on many systems, and the +default page is fine, so make sure it does not get regenerated:</para> <screen><userinput>touch doc/flex.1</userinput></screen> -<para>Now prepare Flex for compilation:</para> +<para>Prepare Flex for compilation:</para> <screen><userinput>./configure --prefix=/usr</userinput></screen> @@ -41,15 +51,21 @@ <para>To test the results, issue: <userinput>make check</userinput>.</para> -<para>Now install the package:</para> +<para>Install the package:</para> <screen><userinput>make install</userinput></screen> -<para>Create a symlink:</para> +<para>There are some packages that expect to find the +<filename class="libraryfile">lex</filename> library in <filename +class="directory">/usr/lib</filename>. Create a symlink to account for +this:</para> <screen><userinput>ln -s libfl.a /usr/lib/libl.a</userinput></screen> -<para>Create a lex script:</para> +<para>A few programs do not know about <command>flex</command> yet and +try to run its predecessor, <command>lex</command>. To support those +programs, create a wrapper script named <filename>lex</filename> that +calls <filename>flex</filename> in <command>lex</command> emulation mode:</para> <screen><userinput>cat > /usr/bin/lex << "EOF" <literal>#!/bin/sh @@ -66,8 +82,54 @@ chmod 755 /usr/bin/lex</userinput></screen> <sect2 id="contents-flex" role="content"><title>Contents of Flex</title> -<para>See testing</para> +<segmentedlist> +<segtitle>Installed programs</segtitle> +<segtitle>Installed library</segtitle> +<seglistitem><seg>flex, flex++ (link to flex), and lex</seg> +<seg>libfl.a</seg></seglistitem> +</segmentedlist> + +<variablelist><bridgehead renderas="sect3">Short Descriptions</bridgehead> +<?dbfo list-presentation="list"?> + +<varlistentry id="flex"> +<term><command>flex</command></term> +<listitem> +<para>A tool for generating programs that recognize patterns in text; +it allows for the versatility to specify the rules for +pattern-finding, eradicating the need to develop a specialized +program</para> +<indexterm zone="ch-system-flex flex"><primary sortas="b-flex">flex</primary></indexterm> +</listitem> +</varlistentry> + +<varlistentry id="flex-"> +<term><command>flex++</command></term> +<listitem> +<para>Invokes a version of <command>flex</command> that is used exclusively for C++ scanners</para> +<indexterm zone="ch-system-flex flex-"><primary sortas="b-flex++">flex++</primary></indexterm> +</listitem> +</varlistentry> + +<varlistentry id="lex"> +<term><command>lex</command></term> +<listitem> +<para>Script that runs <command>flex</command> in <command>lex</command> +emulation mode</para> +<indexterm zone="ch-system-flex lex"><primary sortas="b-lex">lex</primary></indexterm> +</listitem> +</varlistentry> + +<varlistentry id="libfl.a"> +<term><filename class="libraryfile">libfl.a</filename></term> +<listitem> +<para>The <filename class="libraryfile">flex</filename> library</para> +<indexterm zone="ch-system-flex libfl.a"><primary sortas="c-libfl.a">libfl.a</primary></indexterm> +</listitem> +</varlistentry> +</variablelist> </sect2> </sect1> + |