[CMake] help with FindBoost.cmake

[kdsfinger at gmail.com]

hi,
I am using cmake and some library of boost on a linux box. When I use
the boost::shared_ptr, everything is fine. But when I try to
#include <boost/filesystem/operations.hpp>
#include <boost/filesystem/path.hpp>,
the cmake generates lots of "undefined reference to
'boost::filesystem::...' errors. Is there something wrong with the
FindBoost.cmake? Why I still can use part of the boost like
boost::shared_ptr? Thanks for help.
zl2k