flex(1) - f7

1FLEX(1)                          User Commands                         FLEX(1)
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NAME

6       flex - fast lexical analyzer 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
22
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
48
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
60
61   Files:
62       -o, --outfile=FILE
63              specify output filename
64
65       -S, --skel=FILE
66              specify skeleton file
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68       -t, --stdout
69              write scanner on stdout instead of lex.yy.c
70
71       --yyclass=NAME
72              name of C++ class
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74       --header-file=FILE
75              create a C header file in addition to the scanner
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77       --tables-file[=FILE] write tables to FILE
78
79   Scanner behavior:
80       -7, --7bit
81              generate 7-bit scanner
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83       -8, --8bit
84              generate 8-bit scanner
85
86       -B, --batch
87              generate batch scanner (opposite of -I)
88
89       -i, --case-insensitive
90              ignore case in patterns
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92       -l, --lex-compat
93              maximal compatibility with original lex
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95       -X, --posix-compat
96              maximal compatibility with POSIX lex
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98       -I, --interactive
99              generate interactive scanner (opposite of -B)
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101       --yylineno
102              track line count in yylineno
103
104   Generated code:
105       -+,  --c++
106              generate C++ scanner class
107
108       -Dmacro[=defn]
109              #define macro defn  (default defn is '1')
110
111       -L,  --noline
112              suppress #line directives in scanner
113
114       -P,  --prefix=STRING
115              use STRING as prefix instead of "yy"
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117       -R,  --reentrant
118              generate a reentrant C scanner
119
120       --bison-bridge
121              scanner for bison pure parser.
122
123       --bison-locations
124              include yylloc support.
125
126       --stdinit
127              initialize yyin/yyout to stdin/stdout
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129       --noansi-definitions old-style function definitions
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131       --noansi-prototypes
132              empty parameter list in prototypes
133
134       --nounistd
135              do not include <unistd.h>
136
137       --noFUNCTION
138              do not generate a particular FUNCTION
139
140   Miscellaneous:
141       -c     do-nothing POSIX option
142
143       -n     do-nothing POSIX option
144
145       -?
146
147       -h, --help
148              produce this help message
149
150       -V, --version
151              report flex version
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NAME

SYNOPSIS

DESCRIPTION

SEE ALSO