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# Alex: A Lexical Analyser Generator
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[](http://travis-ci.org/simonmar/alex)
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Alex is a Lex-like tool for generating Haskell scanners. For complete
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documentation, see the doc directory.
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http://www.haskell.org/alex/
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http://hackage.haskell.org/package/alex
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Alex is built using Cabal. First install GHC and cabal-install, then:
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$ cabal configure
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$ cabal build
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$ cabal install
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Alex version 2.0 has changed fairly considerably since version 1.x,
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and the syntax is almost completely different. For a detailed list of
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changes, see the release notes in the documentation.
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Alex is now covered by a BSD-Style licence; see the licence file in
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the 'doc' directory for details.
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The sources are in the 'src' directory and the documentation in the 'doc'
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directory; various examples are in the 'examples' subdirectory.
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The source code in the 'src' and 'examples' directories is intended
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for a Haskell 98 compiler with hierarchical modules. It should work
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with GHC >= 5.04.
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Please report any bugs or comments at https://github.com/simonmar/alex/issues
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Share and enjoy,
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Chris Dornan: cdornan@arm.com
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Isaac Jones: ijones@syntaxpolice.org
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Simon Marlow: simonmar@microsoft.com
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