Re: [Boost-users] Serialization of derived classes with boost 1.34.1

From: Hansi (hansipet_at_[hidden])
Date: 2008-08-22 02:36:03

Robert Ramey schrieb:
> Probably something else needs to be explicitly instantiated.  Perhaps
> 
> template void A::serialize(boost::archive::polymorphic_iarchive& ar,
> const  unsigned int file_version);
> template void A::serialize(boost::archive::polymorphic_oarchive& ar,
> const unsigned int file_version);
> 
> Look at the demos. One of them addresses this problem - though
> not through shared_ptr.
> 
> Robert Ramey
> 

I have class A explicitly instantiated. The strange thing is that the 
linker error is allways that I don't have a instantiation with 
binary_oarchive and binary_iarchive. I think it has something to do, 
that in some other project headers the binary_oarchive is used and for 
that the BOOST_CLASS_EXPORT(B) makes also a definition for 
binary_oarchive(Regarding to the documentation an autodetect of the 
included headers is made). But why this has influences on the 
definitions for A?

Best regards
Hansjörg