boost 编译
#vs2019
bjam stage --toolset=msvc-14.1 --stagedir="stage" link=static runtime-link=static threading=multi release
#vs2015
bjam stage --toolset=msvc-14.0 --stagedir="stage" link=static runtime-link=static threading=multi release
#cs2013
bjam stage --toolset=msvc-12.0 --stagedir="stage" link=static runtime-link=static threading=multi release