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243 lines
8.0 KiB
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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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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6.32. Flex-2.5.39
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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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<link rel="stylesheet" href="../stylesheets/lfs-print.css" type="text/css"
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media="print" />
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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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第六章 安装基本的系统软件
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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="m4.html" title="M4-1.4.17">上一页</a>
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<p>
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M4-1.4.17
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</p>
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</li>
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<li class="next">
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<a accesskey="n" href="bison.html" title="Bison-3.0.4">下一页</a>
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<p>
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Bison-3.0.4
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</p>
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</li>
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<li class="up">
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<a accesskey="u" href="chapter06.html" title=
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"第六章 安装基本的系统软件">返回</a>
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</li>
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<li class="home">
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<a accesskey="h" href="../index.html" title=
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"Linux From Scratch - Version 7.7-systemd">主页</a>
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</li>
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</ul>
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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-flex" name="ch-system-flex"></a>6.32. Flex-2.5.39
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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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Flex 软件包包括一个用于生成识别文本模式的程序的工具。
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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">大概编译时间：</strong>
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<span class="segbody">0.3 SBU</span>
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</div>
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<div class="seg">
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<strong class="segtitle">需要磁盘空间：</strong>
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<span class="segbody">38 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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6.32.1. 安装 Flex
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</h2>
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<p>
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首先，跳过需要 Bison 的三个回归测试：
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</p>
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<pre class="userinput">
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<kbd class="command">sed -i -e '/test-bison/d' tests/Makefile.in</kbd>
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</pre>
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<p>
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准备编译 Flex：
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</p>
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<pre class="userinput">
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<kbd class=
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"command">./configure --prefix=/usr --docdir=/usr/share/doc/flex-2.5.39</kbd>
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</pre>
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<p>
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编译软件包：
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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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用以下命令测试结果(大约 0.5 SBU)：
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</p>
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<pre class="userinput">
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<kbd class="command">make check</kbd>
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</pre>
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<p>
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安装软件包：
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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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<p>
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一些程序还不知道 <span class=
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"command"><strong>flex</strong></span> 并尝试运行它的预处理器，
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<span class="command"><strong>lex</strong></span>。为了支持这些程序，
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创建以 <span class="command"><strong>lex</strong></span> 仿真模式运行
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<code class="filename">flex</code> 的符号链接 <code class=
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"filename">lex</code>：
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</p>
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<pre class="userinput">
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<kbd class="command">ln -sv flex /usr/bin/lex</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-flex" name="contents-flex"></a>6.32.2. Flex 的内容
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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">安装的程序：</strong>
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<span class="segbody">flex, flex++ (链接到 flex), 和 lex
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(链接到 flex)</span>
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</div>
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<div class="seg">
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<strong class="segtitle">安装的库：</strong>
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<span class="segbody">libfl.{a,so} 和 libfl_pic.{a,so}</span>
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</div>
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<div class="seg">
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<strong class="segtitle">安装目录：</strong>
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<span class="segbody">/usr/share/doc/flex-2.5.39</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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简要介绍
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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="flex" name="flex"></a><span class=
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"term"><span class=
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"command"><strong>flex</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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一个用于生成能识别文本模式程序的工具；它允许指定多种用于模式发现的规则，
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从而消除了开发专门程序的需要
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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="flexpp" name="flexpp"></a><span class=
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"term"><span class=
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"command"><strong>flex++</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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flex 的扩展，用于生成 C++ 代码和类。是到 <span class=
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"command"><strong>flex</strong></span> 的符号链接
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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="lex" name="lex"></a><span class=
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"term"><span class="command"><strong>lex</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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一个以 <span class=
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"command"><strong>lex</strong></span> 仿真模式运行
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<span class=
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"command"><strong>flex</strong></span> 的脚本
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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="libfl" name="libfl"></a><span class=
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"term"><code class="filename">libfl</code></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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<code class="filename">flex</code> 库
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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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<div class="book">
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<div class="titlepage">
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<div class="author">
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<span class="firstname">翻译团队：<a href="http://lctt.github.io/" target="_blank">LCTT</a></span>
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<span class="surname">译者/校对：<a href="http://github.com/ictlyh" target="_blank">ictlyh</a>,</span>
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</div>
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</div>
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</div>
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<ul>
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<li class="prev">
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<a accesskey="p" href="m4.html" title="M4-1.4.17">上一页</a>
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<p>
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M4-1.4.17
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||
</p>
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||
</li>
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<li class="next">
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<a accesskey="n" href="bison.html" title="Bison-3.0.4">下一页</a>
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<p>
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Bison-3.0.4
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||
</p>
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||
</li>
|
||
<li class="up">
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||
<a accesskey="u" href="chapter06.html" title=
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||
"第六章 安装基本的系统软件">返回</a>
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||
</li>
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||
<li class="home">
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<a accesskey="h" href="../index.html" title=
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||
"Linux From Scratch - Version 7.7-systemd">主页</a>
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||
</li>
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||
</ul>
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||
</div>
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</body>
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</html>
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