Ruby：安装JSON时出错

Question

I am trying to install and get running Rails Starter kit . On running bundle install , I get the following : Your Ruby version is 2.3.0, but your Gemfile specified 2.1.3

So I have changed this line to ruby '2.3.0' and try again the command : see here .

It seems like I am unaible to build the gem native extension, and I don't find any workaround.

Note 1 : I have tried with both 2.3 and 2.3.1. Note 2 : I have RV.

Thanks!

Answer 1

I may be relating to the 'json' native extension compiling. If you're on Mac ensure you've Xcode developer kit installed. On Linux, a workaround is to have libgmp3-dev library installed ( sudo apt-get install libgmp3-dev ) as indicated in this issue .

For Windows users, DevKit is needed.