mirror of https://github.com/tLDP/LDP
58 lines
1.6 KiB
XML
58 lines
1.6 KiB
XML
<sect1 id="ch06-flex">
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<title>Installing Flex-&flex-version;</title>
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<?dbhtml filename="flex.html" dir="chapter06"?>
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<screen>Estimated build time: &flex-time;
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Estimated required disk space: &flex-compsize;</screen>
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&aa-flex-shortdesc;
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&aa-flex-dep;
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<sect2><title> </title><para> </para></sect2>
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<sect2>
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<title>Installation of Flex</title>
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<para>Prepare Flex for compilation:</para>
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<screen><userinput>./configure --prefix=/usr</userinput></screen>
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<para>Compile the package:</para>
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<screen><userinput>make</userinput></screen>
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<para>This package has a test suite available which can perform a number of
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checks to ensure it built correctly. Should you choose to run it, the
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following command will do so:</para>
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<screen><userinput>make bigcheck</userinput></screen>
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<para>And install the package:</para>
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<screen><userinput>make install</userinput></screen>
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<para>There are some packages that expect to find the Lex library in
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<filename>/usr/lib</filename>. Create a symlink to account for this:</para>
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<screen><userinput>ln -s libfl.a /usr/lib/libl.a</userinput></screen>
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<para>A few programs don't know about <userinput>flex</userinput> yet and try
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to run its predecessor <userinput>lex</userinput>. To support those programs,
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create a shell script named <filename>lex</filename> that calls
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<userinput>flex</userinput> in Lex emulation mode:</para>
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<screen><userinput>cat > /usr/bin/lex << "EOF"</userinput>
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#!/bin/sh
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# Begin /usr/bin/lex
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exec /usr/bin/flex -l "$@"
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# End /usr/bin/lex
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<userinput>EOF
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chmod 755 /usr/bin/lex</userinput></screen>
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</sect2>
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</sect1>
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