[erlang-questions] Struggling with the yecc parser tutorial-1

[Tom Ayerst]

I am trying the parser tutorial off the erlang site and I have fallen at the
first hurdle.  Should this "just work" and something is set up wrong or do I
just need to fix things as I find them?

Thanks

Tom

1> c(ecc_parse).
./ecc_parse.erl:42: Warning: variable 'Stream' is unused
./ecc_parse.erl:44: Warning: variable 'L' is unused
./ecc_parse.erl:44: Warning: variable 'Stream' is unused
./ecc_parse.erl:50: Warning: function first/1 is unused
./ecc_parse.erl:50: Warning: variable 'H' is unused
{ok,ecc_parse}
2> ecc_parse:make().
ecc.yrl:104: Warning: function simplify/1 is unused
ecc.yrl:104: Warning: variable 'Tag' is unused
** exception error: undefined function leex:gen/2
     in function  ecc_parse:make/0
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