无法构建Gem扩展错误，安装滑轨

Question

我正在重新安装Ubuntu，并使用该指南安装可在此处找到的rails。

当我到达最终的sudo gem install rails ，出现以下错误：

    Building native extensions.  This could take a while...
ERROR:  Error installing rails:
    ERROR: Failed to build gem native extension.

    current directory: /var/lib/gems/2.3.0/gems/nio4r-1.2.1/ext/nio4r
/usr/bin/ruby2.3 -r ./siteconf20160821-19665-u7rxlt.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/2.3.0/gems/nio4r-1.2.1 for inspection.
Results logged to /var/lib/gems/2.3.0/extensions/x86_64-linux/2.3.0/nio4r-1.2.1/gem_make.out

Answer 1

尝试这个

gem update --system 2.0.3

参考： https : //stackoverflow.com/a/17657242/4132578