lex

Lexical analyzer generator. Given the specification for a lexical analyzer, generates C code implementing it. Note: on most major OSes, this command is an alias for flex. More information: https://manned.org/lex.1.

• Generate an analyzer from a Lex file, storing it to the file lex.yy.c:

lex analyzer.l

• Specify the output file:

lex -t analyzer.l > analyzer.c

• Compile a C file generated by Lex:

c99 path/to/lex.yy.c -o executable