On Sun, Sep 20, 2015 at 11:20 PM, Guy Harris <[email protected]> wrote: > Currently, we require Flex, rather than Lex, but we don't require a version > of Flex sufficiently new to support reentrant scanners. > > That's not a major issue yet, but it could potentially be an issue if we make > more use of threading and have two threads in the same process > > 1) both reading Lucent/Ascend ISDN device text output files; > > 2) both reading Tektronix K12 text files; > > 3) both importing text files as captures; > > as those all involve Flex scanners. It *might* also come up if any of the > other Flex-scanner code is run in more than one thread at once. > > If we also require a version of Flex that supports --header-file=, it could > also let us clean up or even eliminate the runlex.sh script, as those > versions of Flex can generate a .h files that declares functions. > > Flex 2.5.6 (from some time in 2002, I think) adds support for reentrant > scanners. It also supports --header=, which was renamed to --header-file in > Flex 2.5.19, released 2002-09-05. > > We'd also want to require Bison or Berkeley YACC, to generate reentrant > parsers, for the Lucent/Ascend ISDN device text file reader.
I think requiring software released in 2002 is probably safe, we already require much more recent versions of most other libraries. Evan ___________________________________________________________________________ Sent via: Wireshark-dev mailing list <[email protected]> Archives: https://www.wireshark.org/lists/wireshark-dev Unsubscribe: https://wireshark.org/mailman/options/wireshark-dev mailto:[email protected]?subject=unsubscribe
