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tldr/pages/common/flex.md
2020-07-17 19:41:30 +02:00

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# flex
> Lexical analyser generator. Based on `lex`.
> Given the specification for a lexical analyser, generates C code implementing it.
- Generate an analyser from a flex file:
`flex {{analyser.l}}`
- Specify the output file:
`flex --outfile {{analyser.c}} {{analyser.l}}`
- Compile a C file generated by flex:
`cc {{path/to/lex.yy.c}} --output {{executable}}`