source: appendixa/flex-desc.xml@ ab28d5f

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Last change on this file since ab28d5f was 2c094d6, checked in by Timothy Bauscher <timothy@…>, 22 years ago

Applied Bill Maltby's grammar patch. Changed $LFS to LFS where appropriate. Internal XML cleanup: removed double spacing where appropriate.

git-svn-id: http://svn.linuxfromscratch.org/LFS/trunk/BOOK@2138 4aa44e1e-78dd-0310-a6d2-fbcd4c07a689

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1<sect2><title>Contents of Flex</title>
2
3<para>Last checked against version &flex-contversion;.</para>
4
5<sect3><title>Program Files</title>
6<para>flex, flex++ (link to flex) and lex</para></sect3>
7
8<sect3><title>Descriptions</title>
9
10<sect4><title>flex</title>
11<para>flex is a tool for generating programs which recognize
12patterns in text. Pattern recognition is very useful in many applications.
13A user sets up rules about what to look for and flex will make a program
14that looks for those patterns. The reason people use flex is that it is
15much easier to set up rules for what to look for than to write the actual
16program which finds the text.</para></sect4>
17
18<sect4><title>flex++</title>
19<para>flex++ invokes a version of flex which is used exclusively for
20C++ scanners.</para></sect4>
21
22<sect4><title>lex</title>
23<para>We create a bash script called lex which calls flex using the -l option.
24This is for compatibility purposes for programs which use lex instead
25of flex.</para></sect4>
26
27</sect3>
28
29<sect3><title>Library Files</title>
30<para>libfl.a</para></sect3>
31
32<sect3><title>Descriptions</title>
33
34<sect4><title>libfl</title>
35<para>libfl is the flex library.</para></sect4>
36
37</sect3>
38
39</sect2>
40
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