宝石在Windows中安装puma时出错

Question

安装gem install puma时我得到以下错误

  

暂时增强PATH以包含DevKit ......       构建原生扩展。这可能需要一段时间......       错误：安装puma时出错：               错误：无法构建gem原生扩展。

    C:/Ruby21x64/bin/ruby.exe extconf.rb
checking for BIO_read() in -lcrypto... no
checking for BIO_read() in -llibeay32... no
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.  You may
need configuration options.