Visual Studio 2010 - linker errors in standalone functions

Question

I have two projects in my solution; one that creates a static lib, another that uses it and validates it.

I have these linker errors (2019) when using this function in my test application ... but I cannot link other declared things (soley classes) without problems.

The test application depends on the static lib library and has a link to it, so it should reference (I get only this linker error)

Why is this? Am I missing something? I can't think of anything else that could go wrong.

PortableTime.h

#ifndef _PORTABLE_TIME_H
#define _PORTABLE_TIME_H

#if defined _WIN32 || _WIN64
#include <WinSock2.h>
#else
#include <time.h>
#endif

#include <stdint.h>

uint64_t GetTimeSinceEpoch();

#endif

PortableTime.cpp

#include "PortableTime.h"

uint64_t GetTimeSinceEpoch()
{
    #if defined _WIN32 || _WIN64
        return (uint64_t)timeGetTime();
    #else
        struct timeval tv;
        gettimeofday(&tv, 0); 
        return (((uint64_t)tv.tv_sec)*(uint64_t)1000) + (((uint64_t)tv.tv_usec)/(uint64_t)1000);
    #endif
}

Answer 1

timeGetTime Winmm.lib, .

→ Linker → Input → Additional Dependencies.