undefined reference to operator <<

Question

I have a class which I'm trying to stream directly into (I'm not streaming the class into an ostream, but actually streaming text into the class) by overriding the << operator. The class is essentially used so we can toggle debug output on and off for different parts of the project. However, when I try to use the operator, I get an undefined reference.

This is what's in my .h as a public member of the class

template <typename T>
DebugOutputStreamer& operator<<(T const& value);

And this is in my .cpp

template <typename T>
DebugOutputStreamer& DebugOutputStreamer::operator <<(T const& value)
{
    if(m_Enabled)
    {
        if(m_UseColors)
        {
            std::cout << m_OuputColour << value << ConsoleColour::FG_DEFAULT;
        }
        else
        {
            std::cout << value;
        }
    }
    return this;
}

However when I try to stream "Hello" in, I'm getting

main.cpp:(.text+0x564): undefined reference to `DebugOutputStreamer& DebugOutputStreamer::operator<< <char [6]>(char const (&) [6])'

Could anybody tell me what I'm missing?