Ruby 1.9.3

Gemfile的部分

#...............
gem "pony"
gem "bcrypt-ruby", :require => "bcrypt"
gem "nokogiri" 
#..................

当我试图安装宝石时,我得到一个错误

alex@ubuntu:~/$ bundle
Fetching gem metadata from http://rubygems.org/.........
Fetching gem metadata from http://rubygems.org/..
Enter your password to install the bundled RubyGems to your system: 
#####............................................................
Installing bcrypt-ruby (3.0.1) 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:36:in `<main>'


Gem files will remain installed in /home/alex/.bundler/tmp/5526/gems/bcrypt-ruby-3.0.1 for inspection.
Results logged to /home/alex/.bundler/tmp/5526/gems/bcrypt-ruby-3.0.1/ext/mri/gem_make.out
An error occurred while installing bcrypt-ruby (3.0.1), and Bundler cannot continue.
Make sure that `gem install bcrypt-ruby -v '3.0.1'` succeeds before bundling.

然后我做这个

sudo gem install bcrypt-ruby -v '3.0.1'
Building native extensions.  This could take a while...
ERROR:  Error installing bcrypt-ruby:
        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:36:in `<main>'


Gem files will remain installed in /var/lib/gems/1.9.1/gems/bcrypt-ruby-3.0.1 for inspection.
Results logged to /var/lib/gems/1.9.1/gems/bcrypt-ruby-3.0.1/ext/mri/gem_make.out

也会得到一个错误。

我错过了什么?


当前回答

它还有助于确保libmysqlclient-dev已安装(Ubuntu 14.04)

其他回答

确保安装了ruby-dev 确保安装了Make 如果仍然得到错误,请查找建议的包。如果你想安装gem install pg,你还需要安装lib libpq-dev (sudo apt-get install libpq-dev)。

我在安装jquery-rails时也遇到了同样的问题。解决办法是

sudo apt-get install zlibc zlib1g zlib1g-dev

这对我很管用。 捆绑包配置——全局构建。Snappy——with-opt-dir="$(brew -前缀Snappy)"

对于WSL (Windows Subsystem For Linux),您需要安装build-essential包:

sudo apt install build-essential

它还有助于确保libmysqlclient-dev已安装(Ubuntu 14.04)