lex(1) - f39

1FLEX(1)                           Programming                          FLEX(1)
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NAME

6       flex - the fast lexical analyser generator
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SYNOPSIS

9       flex [OPTIONS] [FILE]...
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DESCRIPTION

12       Generates programs that perform pattern-matching on text.
13
14   Table Compression:
15       -Ca, --align
16              trade off larger tables for better memory alignment
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18       -Ce, --ecs
19              construct equivalence classes
20
21       -Cf    do not compress tables; use -f representation
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23       -CF    do not compress tables; use -F representation
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25       -Cm, --meta-ecs
26              construct meta-equivalence classes
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28       -Cr, --read
29              use read() instead of stdio for scanner input
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31       -f, --full
32              generate fast, large scanner. Same as -Cfr
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34       -F, --fast
35              use alternate table representation. Same as -CFr
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37       -Cem   default compression (same as --ecs --meta-ecs)
38
39   Debugging:
40       -d, --debug
41              enable debug mode in scanner
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43       -b, --backup
44              write backing-up information to lex.backup
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46       -p, --perf-report
47              write performance report to stderr
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49       -s, --nodefault
50              suppress default rule to ECHO unmatched text
51
52       -T, --trace
53              flex should run in trace mode
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55       -w, --nowarn
56              do not generate warnings
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58       -v, --verbose
59              write summary of scanner statistics to stdout
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61       --hex  use hexadecimal numbers instead of octal in debug outputs
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FILES

64       -o, --outfile=FILE
65              specify output filename
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67       -S, --skel=FILE
68              specify skeleton file
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70       -t, --stdout
71              write scanner on stdout instead of lex.yy.c
72
73       --yyclass=NAME
74              name of C++ class
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76       --header-file=FILE
77              create a C header file in addition to the scanner
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79       --tables-file[=FILE] write tables to FILE
80
81   Scanner behavior:
82       -7, --7bit
83              generate 7-bit scanner
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85       -8, --8bit
86              generate 8-bit scanner
87
88       -B, --batch
89              generate batch scanner (opposite of -I)
90
91       -i, --case-insensitive
92              ignore case in patterns
93
94       -l, --lex-compat
95              maximal compatibility with original lex
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97       -X, --posix-compat
98              maximal compatibility with POSIX lex
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100       -I, --interactive
101              generate interactive scanner (opposite of -B)
102
103       --yylineno
104              track line count in yylineno
105
106   Generated code:
107       -+,  --c++
108              generate C++ scanner class
109
110       -Dmacro[=defn]
111              #define macro defn  (default defn is '1')
112
113       -L,  --noline
114              suppress #line directives in scanner
115
116       -P,  --prefix=STRING
117              use STRING as prefix instead of "yy"
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119       -R,  --reentrant
120              generate a reentrant C scanner
121
122       --bison-bridge
123              scanner for bison pure parser.
124
125       --bison-locations
126              include yylloc support.
127
128       --stdinit
129              initialize yyin/yyout to stdin/stdout
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131       --nounistd
132              do not include <unistd.h>
133
134       --noFUNCTION
135              do not generate a particular FUNCTION
136
137   Miscellaneous:
138       -c     do-nothing POSIX option
139
140       -n     do-nothing POSIX option
141
142       -?
143
144       -h, --help
145              produce this help message
146
147       -V, --version
148              report flex version
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NAME

SYNOPSIS

DESCRIPTION

FILES

SEE ALSO