Why do I get "conflicting types for yylex" error?

This is a compiler error regarding a generated Bison parser, not a Flex scanner. It means you need a prototype of yylex() in the top of the Bison file. Be sure the prototype matches YY_DECL.

This document was generated by Wolfram Kahl on September, 9 2006 using texi2html 1.76.