How do I compile variadic templates conditionally?

Question

Is there a macro that tells me whether or not my compiler supports variadic templates?

#ifdef VARIADIC_TEMPLATES_AVAILABLE

template<typename... Args> void coolstuff(Args&&... args);

#else

???

#endif

If they are not supported, I guess I would simulate them with a bunch of overloads. Any better ideas? Maybe there are preprocessor libraries that can ease the job?

Answer 1

Maybe: #ifndef BOOST_NO_VARIADIC_TEMPLATES?

---

If variadic templates are not supported, you might think of using the boost tuple library:

template<typename Tuple> void coolstuff(Tuple&& args);

And:

coolstuff(boost::make_tuple(1, 2, 3));