Issue on install native extension ruby with windows 7

Question

I'm troubled with installing a native gem on windows

Error Could not Create Makefile due to some reason, probably lack of necessary

I guess it's a version issue, because I've installed the dev kit for windows to use with ruby 2.0

my gem env is :

RUBYGEMS VERSION: 2.0.14
RUBY VERSION : 2.0.0 [x64-mingw32]
INSTALLATION DIR: C:/Ruby200-x64/bin
RUBYGEMS platforms:
- ruby 
- x64-mingw32