flex(1) - f34

1FLEX(1)                           Programming                          FLEX(1)
2
3
4

NAME

6       flex - the fast lexical analyser generator
7

SYNOPSIS

9       flex [OPTIONS] [FILE]...
10

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
17
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
24
25       -Cm, --meta-ecs
26              construct meta-equivalence classes
27
28       -Cr, --read
29              use read() instead of stdio for scanner input
30
31       -f, --full
32              generate fast, large scanner. Same as -Cfr
33
34       -F, --fast
35              use alternate table representation. Same as -CFr
36
37       -Cem   default compression (same as --ecs --meta-ecs)
38
39   Debugging:
40       -d, --debug
41              enable debug mode in scanner
42
43       -b, --backup
44              write backing-up information to lex.backup
45
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
54
55       -w, --nowarn
56              do not generate warnings
57
58       -v, --verbose
59              write summary of scanner statistics to stdout
60
61       --hex  use hexadecimal numbers instead of octal in debug outputs
62

FILES

64       -o, --outfile=FILE
65              specify output filename
66
67       -S, --skel=FILE
68              specify skeleton file
69
70       -t, --stdout
71              write scanner on stdout instead of lex.yy.c
72
73       --yyclass=NAME
74              name of C++ class
75
76       --header-file=FILE
77              create a C header file in addition to the scanner
78
79       --tables-file[=FILE] write tables to FILE
80
81   Scanner behavior:
82       -7, --7bit
83              generate 7-bit scanner
84
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
96
97       -X, --posix-compat
98              maximal compatibility with POSIX lex
99
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"
118
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
130
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
149

NAME

SYNOPSIS

DESCRIPTION

FILES

SEE ALSO