我正在尝试在Ubuntu上开发一个新项目。克隆GitHub仓库并安装ruby sudo apt-get install ruby
之后,执行
bundle install
我得到了这个反馈:
$ bundle install
Fetching gem metadata from https://rubygems.org/...........
Fetching gem metadata from https://rubygems.org/..
Resolving dependencies...
Using rake (10.0.4)
Using coderay (1.0.9)
Using coffee-script-source (1.6.2)
Using multi_json (1.7.2)
Using execjs (1.4.0)
Using coffee-script (2.2.0)
Installing ffi (1.8.1)
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.
/usr/bin/ruby1.9.1 extconf.rb
/usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require': cannot load such file -- mkmf (LoadError)
from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from extconf.rb:4:in `<main>'
Gem files will remain installed in /home/dbugger/.bundler/tmp/24874/gems/ffi-1.8.1 for inspection.
Results logged to /home/dbugger/.bundler/tmp/24874/gems/ffi-1.8.1/ext/ffi_c/gem_make.out
An error occurred while installing ffi (1.8.1), and Bundler cannot continue.
Make sure that `gem install ffi -v '1.8.1'` succeeds before bundling.
我错过了什么?