boost::thread

[lurker]

Compiling spring with the most recent version of mingwrt, 3.18, causes a multiple definition of `_tls_used'

This does not happen if the following function exists anywhere in the codebase. I'm currently inserting it into a random cpp file:
extern "C" void tss_cleanup_implemented() { }

References:
https://svn.boost.org/trac/boost/ticket/4258
http://lists.boost.org/Archives/boost/2 ... 130440.php

I'm sure something should be done about this, but not what. I don't really know the root cause yet.