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Win flex-bison (bison 2.7, flex 2.6.3)

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This package was approved as a trusted package on 3/31/2018.

flex - The Fast Lexical Analyzer ( and bison - GNU parser generator (

To install Win flex-bison (bison 2.7, flex 2.6.3), run the following command from the command line or from PowerShell:

C:\> choco install winflexbison

To upgrade Win flex-bison (bison 2.7, flex 2.6.3), run the following command from the command line or from PowerShell:

C:\> choco upgrade winflexbison


  • tools\chocolateyInstall.ps1 Show
    # download and unpack a zip file
    Install-ChocolateyZipPackage `
      -PackageName "winflexbison" `
      -Url "" `
      -Checksum "D2D047CEF727A857BE98F04114C8C0E002D4560131DAFB002A965E6779906774" `
      -ChecksumType "sha256" `
      -UnzipLocation "$(Split-Path -parent $MyInvocation.MyCommand.Definition)"

Virus Scan Results

In cases where actual malware is found, the packages are subject to removal. Software sometimes has false positives. Moderators do not necessarily validate the safety of the underlying software, only that a package retrieves software from the official distribution point and/or validate embedded software against official distribution point (where distribution rights allow redistribution).

Chocolatey Pro provides runtime protection from possible malware.


This package has no dependencies.

Package Maintainer(s)

Software Author(s)

  • Alex Zhondin (in addition to original authors of flex and bison)


Version History

Version Downloads Last updated Status
Win flex-bison 142 Saturday, February 4, 2017 approved
Win flex-bison 150 Friday, January 27, 2017 approved
Win flex-bison 1344 Monday, September 12, 2016 approved
Win flex-bison 369 Thursday, August 18, 2016 approved
Win flex-bison 3788 Monday, July 14, 2014 approved
Win flex-bison 449 Friday, January 3, 2014 approved

Discussion for the Win flex-bison (bison 2.7, flex 2.6.3) Package

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  • Tell us what you love about the package or Win flex-bison (bison 2.7, flex 2.6.3), or tell us what needs improvement.
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