[Boost-users] Cannot find -lboost_thhread with upgrade from 1.35 to 1.37

Hi I just upgraded my OS from Ubuntu 8.10 to 9.04 and Boost upgraded at the same time from 1.35 to 1.37. I get some errors linked to the compilation command with g++ : /usr/bin/ld: cannot find -lboost_thread /usr/bin/ld: cannot find -lboost_filesystem These compilation options were working with the 1.35 version of Boost. I'd like to know wether there has been a change in Boost concerning the compilation options or if anything else have changed that would cause that problem. Thanks in advance for the answers. Johan Mazel