mingw error while building clang

Hi all,
I am trying to build llvm and clang form svn repository. I used mingw on windows. I tried steps provided on getting started page of clang.org for unix like system. It finely configured. but when i tried to make command it gives error that “no rules are defined”

what is the problem??

make should be invoked inside the build directory:

llvm checked out at C:\llvm (clang inside C:\llvm\tools\clang)
build directory at C:\build (this is the CMake step)
now inside C:\build you invoke mingw32-make (make should be in your PATH)