error in `install bundler` while installing ruby gems on windows machine

问题

I am trying to intsall middleman - a static site generator, which uses ruby gems. It is able to build all native extensions but not wdm. I am getting the below error message when I run install bundler command in my command prompt.

                 Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

                C:/Ruby200/bin/ruby.exe -r ./siteconf20140814-4200-t0fvuf.rb extconf.rb
            checking for main() in -lkernel32... *** 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:/Ruby200/bin/ruby
                    --with-kernel32lib
                    --without-kernel32lib
            C:/Ruby200/lib/ruby/2.0.0/mkmf.rb:434:in `try_do': The compiler failed to genera
            te an executable file. (RuntimeError)
            You have to install development tools first.
                    from C:/Ruby200/lib/ruby/2.0.0/mkmf.rb:519:in `try_link0'
                    from C:/Ruby200/lib/ruby/2.0.0/mkmf.rb:534:in `try_link'
                    from C:/Ruby200/lib/ruby/2.0.0/mkmf.rb:720:in `try_func'
                    from C:/Ruby200/lib/ruby/2.0.0/mkmf.rb:950:in `block in have_library'
                    from C:/Ruby200/lib/ruby/2.0.0/mkmf.rb:895:in `block in checking_for'
                    from C:/Ruby200/lib/ruby/2.0.0/mkmf.rb:340:in `block (2 levels) in postp
            one'
                    from C:/Ruby200/lib/ruby/2.0.0/mkmf.rb:310:in `open'
                    from C:/Ruby200/lib/ruby/2.0.0/mkmf.rb:340:in `block in postpone'
                    from C:/Ruby200/lib/ruby/2.0.0/mkmf.rb:310:in `open'
                    from C:/Ruby200/lib/ruby/2.0.0/mkmf.rb:336:in `postpone'
                    from C:/Ruby200/lib/ruby/2.0.0/mkmf.rb:894:in `checking_for'
                    from C:/Ruby200/lib/ruby/2.0.0/mkmf.rb:945:in `have_library'
                    from extconf.rb:19:in `<main>'

            extconf failed, exit code 1

            Gem files will remain installed in C:/Ruby200/lib/ruby/gems/2.0.0/gems/wdm-0.1.0
             for inspection.
            Results logged to C:/Ruby200/lib/ruby/gems/2.0.0/extensions/x86-mingw32/2.0.0/wd
            m-0.1.0/gem_make.out
            An error occurred while installing wdm (0.1.0), and Bundler cannot continue.
            Make sure that `gem install wdm -v '0.1.0'` succeeds before bundling.

Do I need to install something before running it.