[ale] where is yacc?

[jbayes at occs.cs.oberlin.edu (Joe Bayes)]

Glenn Stone typeth:
>Mark Cantrell wrote:
>
>> yacc -d parser.y
>> make[3]: yacc: Command not found
>> make[3]: ***: [parser.c] Error 127
>
>Sounds like you didn't install yacc.  Yet Another Compiler Compiler
>is necessary to compile the parser file.  Don't know how it works on
>debian, but in Red Hat it's its own package, the 5.1 version being
>byacc-1.9-6.  
>
>Let's head the next error off at the pass.  If you're using yacc, you 
>also need lex.  But lex is proprietary, so GNU systems use Bison. 

Isn't flex the gnu replacement for lex, and bison the gnu
replacement for yacc? (gotta match up the bad puns ;)

--joe