D:\Ruby187>gem install ruby-debug-base ERROR: Error installing ruby-debug-base: The 'linecache' native gem requires installed build tools. Please update your PATH to include build tools or download the DevKit from 'http://rubyinstaller.org/downlo
You must uninstall previous Windows CNG SDK instances before installing this version. By default, the kit will install itself on "%SYSTEMDRIVE%\Program Files\Windows Kits\8.0\Cryptographic Provider Development Kit" on x86 platforms and "%SYSTEMDR IV