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1. HOW install EM

• need improve step by step text

eventmachine/eventmachine#689

gem uninstall eventmachine
gem install --platform ruby eventmachine

Install the MSYS2 DevKit:

ridk install

Then run all the 3 options

Install the openssl library from the MSYS2 repositories:

ridk exec pacman -S mingw-w64-x86_64-openssl

Install eventmachine with the following command: (change the path for the --with-ssl-dir install flag to match your MSYS2 DevKit directory)

gem install eventmachine --platform ruby -- --use-system-libraries --with-ssl-dir=c:/ruby/msys64/mingw64

.\ridk.cmd install
.\ridk.cmd exec pacman -S mingw-w64-x86_64-openssl

gem install eventmachine --platform ruby -- --use-system-libraries --with-ssl-dir=F:\tools\ruby2651\msys64\mingw64

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in my windows machine

Install the MSYS2 DevKit:

ridk install

Then run all the 3 options

Install the openssl library from the MSYS2 repositories:

ridk exec pacman -S mingw-w64-x86_64-openssl

gem install eventmachine --platform ruby -- --use-system-libraries --with-ssl-dir=I:\sw_apps\Ruby26-x64\msys64\mingw64


gem install bundler
bundle install