Re: [Boost-users] [serialization] Export question

Subject: Re: [Boost-users] [serialization] Export question
From: troy d. straszheim (troy_at_[hidden])
Date: 2009-04-08 11:33:47

Tom Aylesworth wrote:
> I think I just answered my own question regarding whether I can use the 
> EXPORT macro in the header that declares the class being exported.  
> Since the EXPORT macro instantiates a static guid_initializer for the 
> class, including it in multiple source files creates multiple static 
> objects and results in link errors.
> 
>  
> 
> So at this point, I wonder, why bother with the EXPORT macro at all?  
> Given that the class has to be registered with the archive, why not just 
> use register_type when the archive is created?  When I thought the 
> EXPORT macro allowed me to register the class in the same header where 
> the class is created, it seemed very useful.  Now I guess I don’t see 
> any advantage of using EXPORT.  Am I missing something?
> 

yeah.

   base* base = make_derived();
   some_archive << base;

function make_derived is loaded from a shared library that we don't have 
headers for.

-t