Ruby-on-rails 库未加载：/usr/local/opt/readline/lib/libreadline.6.dylib (LoadError)

Library not loaded: /usr/local/opt/readline/lib/libreadline.6.dylib (LoadError)

提问by Zulhilmi Zainudin

I try to run my rails cbut for some reason, I get this error:

我尝试运行我的rails c但由于某种原因，我收到此错误：

https://gist.github.com/anonymous/166713e8cde860fb188a8dffb98a1563

https://gist.github.com/anonymous/166713e8cde860fb188a8dffb98a1563

? rails c
Running via Spring preloader in process 6609
/Users/zulhilmi/.rvm/gems/ruby-2.3.1@useradmin/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in `require': dlopen(/Users/zulhilmi/.rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/x86_64-darwin15/readline.bundle, 9): Library not loaded: /usr/local/opt/readline/lib/libreadline.6.dylib (LoadError)
  Referenced from: /Users/zulhilmi/.rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/x86_64-darwin15/readline.bundle
  Reason: image not found - /Users/zulhilmi/.rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/x86_64-darwin15/readline.bundle
    from /Users/zulhilmi/.rvm/gems/ruby-2.3.1@useradmin/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in `block in require'
    from /Users/zulhilmi/.rvm/gems/ruby-2.3.1@useradmin/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:240:in `load_dependency'
    from /Users/zulhilmi/.rvm/gems/ruby-2.3.1@useradmin/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in `require'
    from /Users/zulhilmi/.rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/irb/completion.rb:10:in `<top (required)>'
    from /Users/zulhilmi/.rvm/gems/ruby-2.3.1@useradmin/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in `require'
    from /Users/zulhilmi/.rvm/gems/ruby-2.3.1@useradmin/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in `block in require'
    from /Users/zulhilmi/.rvm/gems/ruby-2.3.1@useradmin/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:240:in `load_dependency'
    from /Users/zulhilmi/.rvm/gems/ruby-2.3.1@useradmin/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in `require'
    from /Users/zulhilmi/.rvm/gems/ruby-2.3.1@useradmin/gems/railties-4.2.6/lib/rails/commands/console.rb:3:in `<top (required)>'
    from /Users/zulhilmi/.rvm/gems/ruby-2.3.1@useradmin/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in `require'
    from /Users/zulhilmi/.rvm/gems/ruby-2.3.1@useradmin/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in `block in require'
    from /Users/zulhilmi/.rvm/gems/ruby-2.3.1@useradmin/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:240:in `load_dependency'
    from /Users/zulhilmi/.rvm/gems/ruby-2.3.1@useradmin/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in `require'
    from /Users/zulhilmi/.rvm/gems/ruby-2.3.1@useradmin/gems/railties-4.2.6/lib/rails/commands/commands_tasks.rb:123:in `require_command!'
    from /Users/zulhilmi/.rvm/gems/ruby-2.3.1@useradmin/gems/railties-4.2.6/lib/rails/commands/commands_tasks.rb:58:in `console'
    from /Users/zulhilmi/.rvm/gems/ruby-2.3.1@useradmin/gems/railties-4.2.6/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
    from /Users/zulhilmi/.rvm/gems/ruby-2.3.1@useradmin/gems/railties-4.2.6/lib/rails/commands.rb:17:in `<top (required)>'
    from /Users/zulhilmi/.rvm/gems/ruby-2.3.1@useradmin/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in `require'
    from /Users/zulhilmi/.rvm/gems/ruby-2.3.1@useradmin/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in `block in require'
    from /Users/zulhilmi/.rvm/gems/ruby-2.3.1@useradmin/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:240:in `load_dependency'
    from /Users/zulhilmi/.rvm/gems/ruby-2.3.1@useradmin/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in `require'
    from /Users/zulhilmi/hello_gold/cws/bin/rails:8:in `<top (required)>'
    from /Users/zulhilmi/.rvm/gems/ruby-2.3.1@useradmin/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:268:in `load'
    from /Users/zulhilmi/.rvm/gems/ruby-2.3.1@useradmin/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:268:in `block in load'
    from /Users/zulhilmi/.rvm/gems/ruby-2.3.1@useradmin/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:240:in `load_dependency'
    from /Users/zulhilmi/.rvm/gems/ruby-2.3.1@useradmin/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:268:in `load'
    from /Users/zulhilmi/.rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require'
    from /Users/zulhilmi/.rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require'
    from -e:1:in `<main>'

What should I do now?

我现在该怎么办？

回答by Zulhilmi Zainudin

This command fix my problem:

此命令解决了我的问题：

ln -s /usr/local/opt/readline/lib/libreadline.7.0.dylib /usr/local/opt/readline/lib/libreadline.6.dylib

OR

或者

ln -s /usr/local/opt/readline/lib/libreadline.8.0.dylib /usr/local/opt/readline/lib/libreadline.7.dylib

I wrote a Gist about this problem here. There are many people sharing their solutions there too.

我在这里写了一个关于这个问题的要点。还有很多人在那里分享他们的解决方案。

回答by zee

Add this gem to your Gemfile and run bundle install:

将此 gem 添加到您的 Gemfile 并运行bundle install：

gem 'rb-readline'

回答by Christopher Compeau

I had the same underlying issue, which also occurred after a Mac OSX update. My problem manifested using psql:

我有同样的潜在问题，这也发生在 Mac OSX 更新之后。我的问题使用 psql 表现出来：

>> psql --help

dyld: Library not loaded: /usr/local/opt/readline/lib/libreadline.7.dylib
  Referenced from: /usr/local/bin/psql
  Reason: image not found

OK, so this is telling me that it's expecting libreadline.7.dylibin /usr/local/opt/readline/lib. When I browse that directory, I can see I have libreadline.8.0.dylib:

好的，所以这告诉我它libreadline.7.dylib在/usr/local/opt/readline/lib. 当我浏览该目录时，我可以看到我有libreadline.8.0.dylib：

>> ls -l /usr/local/opt/readline/lib

total 1448
 libhistory.8.0.dylib
 libhistory.8.dylib -> libhistory.8.0.dylib
 libhistory.a
 libhistory.dylib -> libhistory.8.0.dylib
 libreadline.8.0.dylib
 libreadline.8.dylib -> libreadline.8.0.dylib
 libreadline.a
 libreadline.dylib -> libreadline.8.0.dylib

I made the assumption that emulating libreadline.7.dylibby using symlinking to libreadline.8.0.dylibcould resolve my problem:

我假设libreadline.7.dylib通过使用符号链接来模拟libreadline.8.0.dylib可以解决我的问题：

>> ln -s /usr/local/opt/readline/lib/libreadline.8.0.dylib /usr/local/opt/readline/lib/libreadline.7.dylib

Which makes my call to psqlwork again, but doesn't address how the problem started in the first place.

这使我psql再次呼吁工作，但并没有解决问题最初是如何开始的。

回答by kangkyu

I installed the ruby of same version over again. Then the error message is gone now. I use macbook and homebrew.

我再次安装了相同版本的ruby。然后错误消息现在消失了。我使用 macbook 和自制软件。

$ rbenv install 2.3.8
rbenv: /Users/klee/.rbenv/versions/2.3.8 already exists
continue with installation? (y/N) y
ruby-build: use openssl from homebrew
Downloading ruby-2.3.8.tar.bz2...
-> https://cache.ruby-lang.org/pub/ruby/2.3/ruby-2.3.8.tar.bz2
Installing ruby-2.3.8...
ruby-build: use readline from homebrew
Installed ruby-2.3.8 to /Users/klee/.rbenv/versions/2.3.8

回答by Kiryl Plyashkevich

Just recompiled ruby version using updated readline from homebrew and it works like a charm.

刚刚使用来自自制软件的更新的 readline 重新编译了 ruby​​ 版本，它就像一个魅力。

rbenv install $(rbenv version-name)

回答by Scott

i was having the same type of issue but it was due to the fact that my awk was linked to gawk leading to using the wrong lib

我遇到了同样类型的问题，但这是因为我的 awk 与 gawk 相关联，导致使用了错误的库

this worked for me

这对我有用

brew unlink gawk

brew unlink gawk

回答by Gus

In my case readlinewas installed but not linked after a MacOS migration. This command fixed it:

在我的情况下，在 MacOS 迁移后安装了readline但未链接。这个命令修复了它：

brew link --force readline

回答by Sathish

simply reinstalling ruby 2.3.0 fixed my problem on macos I use rbenv rbenv install 2.3.0did the trick

只需重新安装红宝石2.3.0固定在MacOS我的问题，我用rbenv rbenv install 2.3.0的伎俩