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[ Source: flex  ]

Package: flex (2.5.31-38ubuntu1)

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Maintainer:

Please consider filing a bug or asking a question via Launchpad before contacting the maintainer directly.

Original Maintainer (usually from Debian):

  • Manoj Srivastava

It should generally not be necessary for users to contact the original maintainer.

Similar packages:

A fast lexical analyzer generator.

flex is a tool for generating scanners: programs which recognized lexical patterns in text. flex reads the given input files for a description of a scanner to generate. The description is in the form of pairs of regular expressions and C code, called rules. flex generates as output a C source file, lex.yy.c, which defines a routine yylex(). This file is compiled and linked with the -lfl library to produce an executable. When the executable is run, it analyzes its input for occurrences of the regular expressions. Whenever it finds one, it executes the corresponding C code.

The behaviour of Flex has undergone a major change since version 2.5.4a; Flex scanners are now reenterant, you may have multiple scanners in the same program with differing sets of defaults, and they play nicer with modern C and C++ compilers. The Flip side is that Flex no longer conforms to the POSIX lex behaviour, and the scanners require conforming implementations when flex is used in ANSI C mode. The package flex-old provides the older behaviour.

This product includes software developed by the University of California, Berkeley and its contributors. The upstream source code can be found at http://prdownloads.sourceforge.net/lex/flex-2.5.31.tar.bz2?download The project web page is at http://lex.sf.net/

Other Packages Related to flex

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    GNU C Library: Shared libraries and Timezone data
    also a virtual package provided by libc6-udeb
  • dep: m4
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  • sug: bison
    A parser generator that is compatible with YACC
    also a virtual package provided by bison++

Download flex

Download for all available architectures
Architecture Package Size Installed Size Files
amd64 235.7 kB788 kB no current information
i386 219.7 kB756 kB no current information
powerpc 229.3 kB776 kB no current information