It's from trying to link statically when the headers are configured for a dynamic link. I explain this for libssh in this question . Poking around in boost/thread/detail/config.
Hpp makes me think you should define BOOST_THREAD_USE_LIB or use the -D flag to do the same.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.