Boost Build

I am building Boost for MSVS10.0. I have generated the bjam.exe file and run
it with the command line:
bjam toolset=msvc10.0 variant=debug,release threading=multi link=static

Looking at the libraries built, there are no sgd libs and the linker wants:
libboost_regex-vc100-mt-sgd-1_55.lib

Don't know how to get the sgd libs.

Thanks