(1) copy all of those files into you home path
(2) clang_complete needs clang in your PC
(3) tern_for_vim needs nodejs in your PC
(4) javacomplete needs jdk in your PC
(1) check the debug log file
vi xxx.cpp -V9theVim.log
(2) print some thing into a temp file in vim plugin
call writefile(split(b:clang_user_options, "-I"), "temp.log")