HI to all, well, I was updating boost libs to 1.50 and I wasn't able to compile spring by two reason until now, first, boost::TIME_UTC was renamed to boost::TIME_UTC_, not big deal, easy to patch, but then an error over an overloaded function , like seems to me that is a boost problem.
Patch supplied is how arch currently does it for 89.0, it may not work for you.
It most definitely doesn't work on the current git, a more permanent solution is being created by some people, but still no easy fix yet.