sean yang wrote: > When I build GCC on my Free-BSD box, I met the following error. My yacc is a > berkeley yacc. Did someone meet this problem before? Can you give some > suggestion about the error? Thanks, You should install GNU bison and re-run configure. You shouldn't need either yacc or bison though if you are building from a tarball, unless something caused your timestamps to be incorrect. The generated files should be included in the tarball. Brian