使用ruby 1.9.2，rails3.1.0，当我尝试生成脚手架时，为什么会出现错误。

Question

基本上，当我尝试生成脚手架时，我收到此错误 no such file to load -- openssl (LoadError)。 错误来自

.rvm/gems/ruby-1.9.2-p290@rails310/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:240:in `block in require'

不确定为什么会这样。这是完整的错误：

/home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/rack-1.3.4/lib/rack/backports/uri/common_192.rb:53: warning: already initialized constant WFKV_
/home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:240:in `require': no such file to load -- openssl (LoadError)
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:240:in `block in require'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:223:in `block in load_dependency'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:640:in `new_constants_in'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:223:in `load_dependency'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:240:in `require'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/rack-1.3.4/lib/rack/session/cookie.rb:1:in `<top (required)>'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:240:in `require'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:240:in `block in require'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:223:in `block in load_dependency'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:640:in `new_constants_in'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:223:in `load_dependency'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/activesupport-3.1.0/lib/active_support/dependencies.rb:240:in `require'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/actionpack-3.1.0/lib/action_dispatch/middleware/session/cookie_store.rb:4:in `<top (required)>'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/application/configuration.rb:125:in `const_get'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/application/configuration.rb:125:in `session_store'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/application.rb:168:in `block in default_middleware_stack'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/application.rb:142:in `tap'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/application.rb:142:in `default_middleware_stack'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/engine.rb:445:in `app'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/application/finisher.rb:37:in `block in <module:Finisher>'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/initializable.rb:25:in `instance_exec'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/initializable.rb:25:in `run'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/initializable.rb:50:in `block in run_initializers'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/initializable.rb:49:in `each'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/initializable.rb:49:in `run_initializers'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/application.rb:92:in `initialize!'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/railtie/configurable.rb:30:in `method_missing'
    from /home/spencer/Desktop/blog/config/environment.rb:5:in `<top (required)>'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/application.rb:78:in `require'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/application.rb:78:in `require_environment!'
    from /home/spencer/.rvm/gems/ruby-1.9.2-p290@rails310/gems/railties-3.1.0/lib/rails/commands.rb:22:in `<top (required)>'
    from script/rails:6:in `require'
    from script/rails:6:in `<main>'

Answer 1

好的，我最终做的就是这个。

• 从rvm
卸载了所有版本的ruby
• 从rvm
删除了所有gemsets
• $ rvm pkg install openssl
• $ rvm pkg install zlib
• $ rvm install 1.9.2 --with-openssl-dir = $ HOME / .rvm / usr --with-zlib-dir = $ rvm_path / usr
• 重新安装gemset中的rails

之后一切正常。

Answer 2

你应该可以做这样的事情:(原谅我的路径中可能有错误而我不在我的linux盒子上这一事实）

cd to ~.rvm/src/ruby-1.9.2-p290/ext/openssl
ruby extconf.rb
make
make install

基本上，只需cd到您的特定ruby版本的gem的源目录，然后重建/安装它。

你不需要重建ruby，这是一个常见的问题。

Answer 3

如果您在Linux中可以尝试这些

apt-get install openssl
apt-get install libopenssl-ruby