ruby on rails安装JSON ubuntu错误
嘿，我是rails（以及linux）的新手，我一直收到这个错误：
Installing json (1.7.5) with native extensions 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:1:in `' Gem files will remain installed in /home/jack/.bundler/tmp/10426/gems/json-1.7.5 for inspection. Results logged to /home/jack/.bundler/tmp/10426/gems/json-1.7.5/ext/json/ext/generator/gem_make.out An error occurred while installing json (1.7.5), and Bundler cannot continue. Make sure that `gem install json -v '1.7.5'` succeeds before bundling. jack@jack-ThinkCentre:~/rails_projects/sample_app$ 我无法单独安装gem或使用bundle install。 我用rvm来安装rails。 提前致谢。
安装ruby1.9.1-dev软件包应该为您解决这个问题
sudo apt-get install ruby1.9.1-dev
“在运行ruby 2.2.3的ubuntu-trusty-64上也存在相同的问题。解决方案是安装libgmp3-dev。”
sudo apt-get install libgmp3-dev