title: undefined reference to `boost::chrono::system_clock::now()' - Boost, and cpp-netlib
body: <p>I come here to ask for a fix to a situation that has been frustrating me. A lot.
  First of all, I'm on Windows, I use MinGW as a compiler (C++).<br>
  <br>
  I've been having some problems with getting a program to work with the use of cpp-netlib and SSL (trying to POST to a https site). I believe everything is in order except this one error that keeps evading me.
  <br>
  <code>C:\boost_1_50_0\boost_1_50_0\stage\lib\libboost_thread-mgw46-mt-1_50.a(thread.o):thread.cpp|| undefined reference to 'boost::chrono::system_clock::now()'</code><br><br>
  I'm sure that I've linked to chrono, as well as all the .a libs in <code>BOOST_ROOT/stage/lib</code>. I've tried re-ordering so chrono is linked before thread. Nothing helped.
  I've tried definining the <code>BOOST_CHRONO_INLINED</code> in my IDE settings and multiple <code>conf.hpp</code>s to make it header only, which didn't help.
  <br><br>
  I'm pretty sure this is a newbie question and I hope that someone can give me a quick fix. I've written this in a rush because I have to be somewhere but if you need more info please say so and I can write it more carefully when I get home. Thanks!</p>