Ignore post - have figured it out - couple of errors - because I am instanatiating a function, not the whole class, I needed to remove the class statement, and secondly, I had missed out the void as the return type for the serialise function This works. template void LCPanel::serialize<boost::archive::xml_iarchive>(boost::archive>::xml_ia r> chive&, unsigned int) And now application links to library no problem. James

-----Original Message----- From: boost-users-bounces@lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Hughes, James Sent: 24 May 2007 12:18 To: boost-users@lists.boost.org Subject: [Boost-users] [Serialisation] Explicit instantiation of serializewhen used in library

Hello all (but probably mostly Robert)

I have a class in a library which has a serialise function. It's defined in the header but implemented in the cpp file.

However, I am getting an unresolved error, because when the library is build there is no need to instantiate the serialise function, as its only called by something using the library.

So, I have tried to explicitly instantiate the missing function in the cpp file in the library, after the serialise implementation

template class LCPanel::serialize<boost::archive::xml_iarchive>(boost::archiv e::xml_iar chive&, unsigned int)

However, this line gives an error

Expected ')' before '&' token

I'm not sure where I am going wrong here as syntax appears correct (but I am not sure of), any ideas?

James

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