我正在尝试安装rails，但收到以下错误：
ERROR: Error installing json:
ERROR: Failed to build gem native extension.
/usr/bin/ruby2.2 -r ./siteconf20150420-9274-14pi84x.rb extconf.rb
mkmf.rb can't find header files for ruby at /usr/lib/ruby/include/ruby.h
extconf failed, exit code 1
Gem files will remain installed in /var/lib/gems/2.2.0/gems/json-1.8.2 for inspection.
Results logged to /var/lib/gems/2.2.0/extensions/x86_64-linux/2.2.0/json-1.8.2/gem_make.out
我已经看过类似的问题并回答了问题，但似乎没有解决我的问题
答案 0 :(得分：2)