Why don't I have /bin/ directory in L4

[chenggh04 at st.lzu.edu.cn]

Hi,Everybody:
   I am a beginner for L4. when I compile the L4 without any errors but finally I
don't have the bin  directory which inlcudes hello, rmgr and sigma0. Maybe I think
there is lack of some packages in my install package. But the package is
downloaded from the Fiasco official WebSite. I don't know why! Please help me!
                                                    Chenggh