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5.30. Flex-2.5.31
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Linux From Scratch - Version 6.1
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Chapter 5. 构建临时编译环境
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5.30. Flex-2.5.31
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<p>Flex 包含一个工具，可用于生成识别文本中图形的程序。
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<strong><span class="segtitle">预计编译时间：</span></strong> <span class="seg">0.6 SBU</span>
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<strong><span class="segtitle">所需磁盘空间：</span></strong> <span class="seg">22.5 MB</span>
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<strong><span class="segtitle">安装依赖于：</span></strong> <span class="seg">Bash, Binutils, Bison, Coreutils, Diffutils, GCC, Gettext, Glibc, Grep, M4, Make, Sed</span>
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<h2 class="sect2">
5.30.1. 安装 Flex
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<p>已知 Flex 存在几个 bug，可用下面的补丁来修复：
</p>
<pre class="userinput"><kbd class="command">patch -Np1 -i ../flex-2.5.31-debian_fixes-3.patch</kbd></pre>
<p>GNU 自动工具会检测到 Flex 的源代码被上面的补丁修正过，因而会更新相应的手册页，这个操作在许多系统上会失败，而且缺省的手册页也没有问题，所以不需要重新生成它：
</p>
<pre class="userinput"><kbd class="command">touch doc/flex.1</kbd></pre>
<p>
现在准备编译 Flex：
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<pre class="userinput"><kbd class="command">./configure --prefix=/tools</kbd></pre>
<p>编译软件包：</p>
<pre class="userinput"><kbd class="command">make</kbd></pre>
<p>
要测试结果，请运行： <strong class="userinput"><tt>make check</tt></strong>
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<p>
安装软件包：
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<pre class="userinput"><kbd class="command">make install</kbd></pre>
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<p>关于这个软件包的详细资料位于 <a href="../chapter06/flex.html#contents-flex" title="6.29.2. Contents of Flex">Section 6.29.2, “Contents of Flex.”</a>
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