Unable to install Eventmachine Ruby 2.0 windows 7

Question

I am trying to install Event Machine on Ruby 2.0 under windows 7 but I get the following error

Temporarily enhancing PATH to include DevKit...
Building native extensions.  This could take a while...
ERROR:  Error installing eventmachine:
        ERROR: Failed to build gem native extension.

:154:0, from binder.cpp:20: eventmachine.h: At global scope: eventmachine.h:46:61: warning: type qualifiers ignored on function return type [ -Wignored-qualifiers] eventmachine.h:47:112: warning: type qualifiers ignored on function return type [-Wignored-qualifiers] eventmachine.h:48:69: warning: type qualifiers ignored on function return type [ -Wignored-qualifiers] eventmachine.h:50:73: warning: type qualifiers ignored on function return type [ -Wignored-qualifiers] eventmachine.h:65:75: warning: type qualifiers ignored on function return type [ -Wignored-qualifiers] eventmachine.h:66:74: warning: type qualifiers ignored on function return type [ -Wignored-qualifiers] eventmachine.h:67:77: warning: type qualifiers ignored on function return type [ -Wignored-qualifiers] eventmachine.h:68:41: warning: type qualifiers ignored on function return type [ -Wignored-qualifiers] In file included from project.h:154:0, from binder.cpp:20: eventmachine.h:103:58: warning: type qualifiers ignored on function return type [-Wignored-qualifiers] eventmachine.h:105:60: warning: type qualifiers ignored on function return type [-Wignored-qualifiers] eventmachine.h:108:41: warning: type qualifiers ignored on function return type [-Wignored-qualifiers] make: * [binder.o] Error 1

I tried using gem install eventmachine --pre but that didn't help either

Answer 1

i suggest you to use linux but for your question try this

 gem install eventmachine --pre

it will install eventmachine