On Thu, 12 Jul 2012 11:18:56 +0200, Unger, Jörg F. wrote:

I'm trying to serialize a template class with multiple template parameters. In the header file, I declare something like

template class Node { private: std::array first; std::array second; }

BOOST_CLASS_EXPORT_KEY(Node<1,1>)

In a separate file, I would use the BOOST_CLASS_EXPORT_IMPLEMENT macro. However, when I'm using the BOOST_CLASS_EXPORT_KEY with a class that has more than one template parameter (as in the example above), I get an error message Error: macro "BOOST_CLASS_EXPORT_KEY" passed 2 arguments, but takes just 1

I'm using gcc 4.7.1 with boost 50

Any ideas, how to solve that problem?

Jörg F.

Hi, My boost 1.47 does not have BOOST_CLASS_EXPORT_KEY but I suppose this is a macro, therefore there is a problem with comma in template. Try to use typedef or maybe BOOST_PP_COMMA may help here. -- Slava