when i open the given ros node file in vim, it is showing me the error ros.h is not found. I have set the clang path as: " path to directory where library can be found let g:clanglibrarypath='/usr/lib/llvm-6.0/lib' " or path directly to the library file let g:clanglibrarypath='/usr/lib/llvm-6.0/lib/libclang-6.0.so'