Answer Posted / srini

#define DO_NOT_DERIVE(T) \
class NoDerive_##T { \
friend class T;
\
NoDerive_##T() {}
\
NoDerive_##T(const NoDerive_##T&) {} \
};
#define stopderiving(T) private virtual NoDerive_##T

when we derive from any class, the constructor needs to be
called, since here constructor of NoDerive calss is
private, it cannot be derived. And friendship cannot be
inherited.
usage
class finalclass : stopderiving (finalclass)
{
....
};

the other possible solution for this is making the default
constructor private.

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