[boost] boost::io::detail::empty_buf problem with shared libs

From: Paul Hamilton (paul_at_[hidden])
Date: 2003-08-17 11:30:10

This gives me problems:

   template<class Tr, class Ch> inline
   void empty_buf(BOOST_IO_STD basic_ostringstream<Ch,Tr> & os) {
     static const std::basic_string<Ch, Tr> emptyStr;
     os.str(emptyStr);
   }

When I use something that includes this in two different dll's, and 
then try to link them into another exe (or dll), I get a problem with 
duplicate symbols.

It's usually a bad idea to declare a global variable as part of a 
library, without specifying some way of providing the actual definition 
of it a single time.

What is the work around apart from wrapping all of the boost functions 
in another library?

I'm working on OS X, so maybe it's specific to that platform.

Paul.

---------------------
Paul Hamilton
pHamtec P/L - Software Makers
http://www.phamtec.com/
mailto:paul_at_[hidden]

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