../include/BoostGraph_undirected_i.h: In member function `virtual std::vector<int, std::allocator<i +nt> > BoostGraph_undirected_i<G>::connectedComponents()': ../include/BoostGraph_undirected_i.h:59: error: `_changed' was not declared in this scope Boost 1.33.1 has been successfully installed. I do not have the root access, so i specify the directory in the makefile.PL files in both Undirect +ed and Directed folders to be 'INC' => '-I. -I../include -I/xome/dsk1/hyan/bin/include/boost-1_33_1/'