linking error2005 visual studio 2008 c++

Question

I had struct errorStruct & a queue errQueue definition in yacc.y , then moved it to separate .h file
but it gives me linking error that the definition is found in both y

Answer 1

opss! I forgot to post the answer .. sorry ..

got it with the help of @Peter K.'s reference :

go to VS : project -> property page -> configuration properties -> linker ->command line

and add /FORCE:MULTIPLE in additional options box