Varias gramáticas YACC en un programa

Question

¿Cómo compilo, enlazo y llamo diferentes gramáticas YACC usando yyparse() en un programa?

Answer 1

Utilice la opción -p para cada gramática yacc separada generación

-p prefix 

      Use prefix instead of yy as the prefix for all external 
      names produced by yacc. For X/Open compliance, when the 
      environment variable _XPG is set, then the -p option will work 
      as described in the previous sentence. If the environment 
      variable _XPG is not set, then the -p option will work as 
      described below in the -P option.