static member functions/data within libraries

[Morfeas]

Is there anything special about having static member functions and data in
a class that is defined within a library (DLL or .so or .a)?

I have the following :

class Test
{
public:
static void Temp();
void MyFunc();

private:
static int i;
};

void Test::MyFunc()
{
Test::Temp();
}

void Test::Temp()
{
i = 2;
}

When I compile this as a stand alone executable, it works fine.

When I compile as a library, the compiler says :

undefined reference to `Test::i'

Any ideas?

Thanks,

Morfeas

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