無法安裝Rails failed to build gem native extension
安裝Rails 時，總是報錯。
vagrant@vagrant-ubuntu-trusty-64:~$ sudo gem install rails -v 4.1.2
Building native extensions.? This could take a while...
ERROR:? Error installing rails:
ERROR: Failed to build gem native extension.
這個是為什么啊·~
2015-12-21
你用淘寶的鏡像試試，我這可以下載安裝了
2015-12-21
vagrant@vagrant-ubuntu-trusty-64:~$ gem install rails -v 4.1.2
ERROR:? Could not find a valid gem 'rails' (= 4.1.2), here is why:
????????? Unable to download data from https://rubygems.org/ - SSL_connect SYSCALL returned=5 errno=0 state=unknown state (https://rubygems.global.ssl.fastly.net/specs.4.8.gz)
我的是這樣，說是找不到這個版本的了