C++ DLL LINK PROBLEM OVERLOADED OPERATOR

Hi guys, facing some issues here:

Waz is in a DLL named Test

Waz.h

// Import/Export Pattern
#ifdef TEST_EXPORTS
#define DllExport __declspec(dllexport)
#else
#define DllExport __declspec(dllimport)
#endif

#pragma once
#ifndef __Test__Waz__
#define __Test__Waz__

#include "WazImpl.h"

class DllExport Waz
{
/* Friends */
friend class WazImpl;
friend Waz operator*(const Waz &,const Waz &);

private:

WazImpl *p;
...
public:
...
};

#endif /* defined(__Test__Waz__) */

Waz operator*(const Waz &,const Waz &);

-------

Waz.cpp
(all def of the operator in public and ...)
Waz operator*(const Waz & w1, const Waz & w2)
{
Waz ww;
*ww.p=*w1.p * *w2.p;
return ww;
}


Then in the solution I have a console application and in my main

int main()
{
Waz a;
a(1,1) =3 ; // this line works fine operator() is defined in the public of the Waz class
Waz b;
Waz c = a*b; // ERROR

ERROR:
error LNK2019 : unresolved external symbol "class Waz __cdecl operator*(class Waz const &, class Waz const &)" (??D@YA?AVWaz@@ABV0@0@Z) referenced in the function _main
error LNK1120 : 1 unresolved external symbol

Any idea? Don't know what to do anymore to solve this..
Thanks in advance!!
Code tags can help us try to analyze code. Are you sure the operator is being exported?
For sure class Waz is exported as I can put in my main Waz a; or use it's operator.
I think you might be right and my operator * is not exported but when I put in front of it DllExport (what I did to export the class) it gives me a new error :
error C2375 : operator* redefinition different linking
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