Bison parser generator

Bison is a general-purpose parser generator that converts a grammar description for an LALR(1) context-free grammar into a C program to parse that grammar. Bison is upward compatible with Yacc: all properly-written Yacc grammars ought to work with Bison with no change.

Bison was written primarily by Robert Corbett; Richard Stallman made it Yacc-compatible. Wilfred Hansen of Carnegie Mellon University added multicharacter string literals and other features.

Bison is distributed by the Free Software Foundation. Latest versions likely to be available at these sites.