在Ubuntu 16.04上安裝Rails時出錯，無法構建gem本機擴展

Question

這是我放入的代碼，然后出現錯誤：我目前正在弄清rails標頭，看看會發生什么。 我關注了這篇文章https://gorails.com/setup/ubuntu/16.04

和這篇文章： http : //ryanbigg.com/2014/10/ubuntu-ruby-ruby-install-chruby-and-you

沒事了。

gem install rails 
ERROR:  While executing gem ... (Gem::FilePermissionError)
    You don't have write permissions for the /var/lib/gems/2.3.0 directory.
rickus@rickus:~$ sudo gem install rails
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/nokogiri-1.8.1/ext/nokogiri
/usr/bin/ruby2.3 -r ./siteconf20170928-18941-1fdewid.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/nokogiri-1.8.1 for inspection.
Results logged to /var/lib/gems/2.3.0/extensions/x86_64-linux/2.3.0/nokogiri-1.8.1/gem_make.out

Answer 1

我也遇到了這個問題，我使用sudo命令安裝了ruby環境管理器rvm / rbenv。您可以重新安裝ruby環境管理器並避免使用sudo命令，否則所有gem安裝都將需要sudo命令，應避免使用sudo命令來避免沖突未來。