CODEWITHSUNDEEP
c++templatesvariant
yano
yano

Reputation: 4453

Precompile std::variant instantiation?

I am using a C++ std::variant with around 100 structs as possible choices. This type is used throughout my application and compile times tend to point to the instantiation and generation of various std::variant methods: e.g.

Wall Duration 18,560.314 ms
Args
detail  
"std::__variant_detail::__dtor.......

Of course there are also 100's to TU's that need this definition, so my compile times are getting quite high.

With templates I'm familiar with instantiating the template in a TU for example

template class MyClass<XXX>;

Can I do a similar thing for the variant? How do I make other TU's depend on these symbols being linked in? Can I do this in a Precompiled header perhaps?

Upvotes: 0

Views: 82

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