Can't install cmake - Couldn't create custom gem extension

I am trying to install gems cmake

and rugged

. My Ruby is 193 and my DevKit is installed accordingly to this version. I changed the system PATH

and installed DevKit.

Now I am trying to run gem install cmake

and I am getting the error:

> gem install cmake
Temporarily enhancing PATH to include DevKit...
Building native extensions.  This could take a while...
ERROR:  Error installing cmake:
        ERROR: Failed to build gem native extension.

        C:/Ruby193/bin/ruby.exe extconf.rb
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers.  Check the mkmf.log file for more
details.  You may need configuration options.

Provided configuration options:
        --with-opt-dir
        --without-opt-dir
        --with-opt-include
        --without-opt-include=${opt-dir}/include
        --with-opt-lib
        --without-opt-lib=${opt-dir}/lib
        --with-make-prog
        --without-make-prog
        --srcdir=.
        --curdir
        --ruby=C:/Ruby193/bin/ruby
extconf.rb:5:in `chdir': No such file or directory - C:/Ruby193/lib/ruby/gems/1.9.1/gems/
OENT)
        from extconf.rb:5:in `<main>'


Gem files will remain installed in C:/Ruby193/lib/ruby/gems/1.9.1/gems/cmake-2.8.7 for in
Results logged to C:/Ruby193/lib/ruby/gems/1.9.1/gems/cmake-2.8.7/ext/cmake/gem_make.out

      

        
        
        
      

    

I don't know what to do, I used new Ruby before and the problem was the same. What can I do?