All these errors running basic Pegged helloworld example.

[Enjoys Math via Digitalmars-d-learn]

The example is:

import pegged.grammar;
mixin(grammar(`
Arithmetic:
    Term     < Factor (Add / Sub)*
    Add      < "+" Factor
    Sub      < "-" Factor
    Factor   < Primary (Mul / Div)*
    Mul      < "*" Primary
    Div      < "/" Primary
    Primary  < Parens / Neg / Pos / Number / Variable
    Parens   < "(" Term ")"
    Neg      < "-" Primary
    Pos      < "+" Primary
    Number   < ~([0-9]+)

    Variable <- identifier
`));

I'm using Visual D and have C:\MyProjects\D\Pegged (the git clone 
of pegged) added to the add'l imports field under project 
properties > compiler.

I'm getting errors like these:

Error	1	Error 42: Symbol Undefined 
_D6pegged7dynamic7grammar7grammarFAyaHAyaDFS6pegged3peg9ParseTreeZS6pegged3peg9ParseTreeZS6pegged7dynamic7grammar14DynamicGrammar (pegged.dynamic.grammar.DynamicGrammar pegged.dynamic.grammar.grammar(immutable(char)[], pegged.peg.ParseTree delegate(pegged.peg.ParseTree)[immutable(char)[]]))	C:\MyProjects\D\PeggedPractice\	
Error	2	Error 42: Symbol Undefined 
_D6pegged7dynamic7grammar12__ModuleInfoZ	C:\MyProjects\D\PeggedPractice\	

The # of errors was greatly reduced when I added the 3 pegged 
source files to my project.   What can be going wrong?  Thanks!