ROR + Error while installing Rails 4 -

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in system, trying install rails 4 ruby2. ruby 2 installed successfully. while installing rails4, made configuration per devkit. though error message.

temporarily enhancing path include devkit...

building native extensions. take while...

error: error installing rails:

error: failed build gem native extension.

c:/ruby200-x64/bin/ruby.exe extconf.rb

* extconf.rb failed * not create makefile due reason, lack of necessary libraries and/or headers. check mkmf.log file more details. may need configuration options.

i not getting way resolve it. in advance.


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