# New Ticket Created by Chip Salzenberg # Please include the string: [perl #39867] # in the subject line of all future correspondence about this issue. # <URL: http://rt.perl.org/rt3/Ticket/Display.html?id=39867 >
Currently if the user has bison or flex that's too old, he won't be told, and will simply find that a maintainer build fails. Configure.perl should check that flex and bison are adequately modern to handle the imcc grammar and lexical scan. Currently required versions: flex 2.5.33 (or higher) bison 2.2 (or higher) -- Chip Salzenberg <[EMAIL PROTECTED]>
