FLEX(1) User Commands FLEX(1)

NAME
       flex - fast lexical analyzer generator

SYNOPSIS
       fflleexx [OPTIONS] [FILE]...

DESCRIPTION
       Generates programs that perform pattern-matching on text.

   TTaabbllee CCoommpprreessssiioonn::
       -CCaa, --aalliiggnn
              trade off larger tables for better memory alignment

       -CCee, --eeccss
              construct equivalence classes

       -CCff    do not compress tables; use -ff representation

       -CCFF    do not compress tables; use -FF representation

       -CCmm, --mmeettaa-eeccss
              construct meta-equivalence classes

       -CCrr, --rreeaadd
              use read() instead of stdio for scanner input

       -ff, --ffuullll
              generate fast, large scanner. Same as -CCffrr

       -FF, --ffaasstt
              use alternate table representation. Same as -CCFFrr

       -CCeemm   default compression (same as --eeccss --mmeettaa-eeccss)

   DDeebbuuggggiinngg::
       -dd, --ddeebbuugg
              enable debug mode in scanner

       -bb, --bbaacckkuupp
              write backing-up information to lex.backup

       -pp, --ppeerrff-rreeppoorrtt
              write performance report to stderr

       -ss, --nnooddeeffaauulltt
              suppress default rule to ECHO unmatched text

       -TT, --ttrraaccee
              flex should run in trace mode

       -ww, --nnoowwaarrnn
              do not generate warnings

       -vv, --vveerrbboossee
              write summary of scanner statistics to stdout

   FFiilleess::
       -oo, --oouuttffiillee=FILE
              specify output filename

       -SS, --sskkeell=FILE
              specify skeleton file

       -tt, --ssttddoouutt
              write scanner on stdout instead of lex.yy.c

       --yyyyccllaassss=NAME
              name of C++ class

       --hheeaaddeerr-ffiillee=FILE
              create a C header file in addition to the scanner

       --ttaabblleess-ffiillee[=FILE] write tables to FILE

   SSccaannnneerr bbeehhaavviioorr::
       -77, --77bbiitt
              generate 7-bit scanner

       -88, --88bbiitt
              generate 8-bit scanner

       -BB, --bbaattcchh
              generate batch scanner (opposite of -II)

       -ii, --ccaassee-iinnsseennssiittiivvee
              ignore case in patterns

       -ll, --lleexx-ccoommppaatt
              maximal compatibility with original lex

       -XX, --ppoossiixx-ccoommppaatt
              maximal compatibility with POSIX lex

       -II, --iinntteerraaccttiivvee
              generate interactive scanner (opposite of -BB)

       --yyyylliinneennoo
              track line count in yylineno

   GGeenneerraatteedd ccooddee::
       -+,  --cc++
              generate C++ scanner class

       -DDmmaaccrroo[=defn]
              #define macro defn  (default defn is '1')

       -LL,  --nnoolliinnee
              suppress #line directives in scanner

       -PP,  --pprreeffiixx=STRING
              use STRING as prefix instead of "yy"

       -RR,  --rreeeennttrraanntt
              generate a reentrant C scanner

       --bbiissoonn-bbrriiddggee
              scanner for bison pure parser.

       --bbiissoonn-llooccaattiioonnss
              include yylloc support.

       --ssttddiinniitt
              initialize yyin/yyout to stdin/stdout

       --nnooaannssii-ddeeffiinniittiioonnss old-style function definitions

       --nnooaannssii-pprroottoottyyppeess
              empty parameter list in prototypes

       --nnoouunniissttdd
              do not include 

       --nnooFFUUNNCCTTIIOONN
              do not generate a particular FUNCTION

   MMiisscceellllaanneeoouuss::
       -cc     do-nothing POSIX option

       -nn     do-nothing POSIX option

       -?

       -hh, --hheellpp
              produce this help message

       -VV, --vveerrssiioonn
              report flex version

SEE ALSO
       The  full documentation for fflleexx is maintained as a Texinfo manual.  If
       the iinnffoo and fflleexx programs are properly installed  at  your  site,  the
       command

              iinnffoo fflleexx

       should give you access to the complete manual.



flex 2.5.33                      February 2006                         FLEX(1)