Ruby native gem installation

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On 2.5: gem install ox --platform=ruby

On 1.9.3: Error occurs with following steps

Download "DevKit-tdm-32-4.5.2-20110712-1620-sfx.exe" from https://rubyinstaller.org/downloads/archives/

Follow https://github.com/oneclick/rubyinstaller/wiki/Development-Kit

But compilation issue of "undefined reference to `RSTRUCT_GET'" is encountered

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