库未加载:libmysqlclient.16。在OS X 10.6上使用mysql2 gem运行'rails server'时出现dylib错误

我已经为此纠结了一段时间。

我已经在我的雪豹机器上安装了Rails 3, gem, mysql。一切都很顺利，直到我创建了我的第一个项目并试图运行

rails server

在运行这个我得到:

jontybrook$ rails server
/Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle: dlopen(/Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle, 9): Library not loaded: libmysqlclient.16.dylib (LoadError)
  Referenced from: /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle
  Reason: image not found - /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle
    from /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2.rb:7
    from /Library/Ruby/Gems/1.8/gems/bundler-1.0.7/lib/bundler/runtime.rb:64:in `require'
    from /Library/Ruby/Gems/1.8/gems/bundler-1.0.7/lib/bundler/runtime.rb:64:in `require'
    from /Library/Ruby/Gems/1.8/gems/bundler-1.0.7/lib/bundler/runtime.rb:62:in `each'
    from /Library/Ruby/Gems/1.8/gems/bundler-1.0.7/lib/bundler/runtime.rb:62:in `require'
    from /Library/Ruby/Gems/1.8/gems/bundler-1.0.7/lib/bundler/runtime.rb:51:in `each'
    from /Library/Ruby/Gems/1.8/gems/bundler-1.0.7/lib/bundler/runtime.rb:51:in `require'
    from /Library/Ruby/Gems/1.8/gems/bundler-1.0.7/lib/bundler.rb:112:in `require'
    from /Users/jontybrook/Dropbox/CODING/simple_cms/config/application.rb:7
    from /Library/Ruby/Gems/1.8/gems/railties-3.0.3/lib/rails/commands.rb:28:in `require'
    from /Library/Ruby/Gems/1.8/gems/railties-3.0.3/lib/rails/commands.rb:28
    from /Library/Ruby/Gems/1.8/gems/railties-3.0.3/lib/rails/commands.rb:27:in `tap'
    from /Library/Ruby/Gems/1.8/gems/railties-3.0.3/lib/rails/commands.rb:27
    from script/rails:6:in `require'
    from script/rails:6
jontybrook$

据我所知，问题是与mysql2宝石。MySQL似乎运行良好，我的Gemfile引用mysql2，我的数据库。Yml文件似乎也可以。

错误中提到

Reason: image not found - /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle

然而,

jontybrook$ cd /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2
jontybrook$ ls
client.rb   em.rb       error.rb      mysql2.bundle result.rb

MySQL2。捆绑在那里!?

如果我使用旧的mysql gem, WEBrick启动正常。但这并不理想，不是吗?

谷歌能给我的我都试过了!任何帮助都非常感激。

当前回答

我从来不能让这些答案为我工作，但这是我用来使它为我工作的命令。这样你就不需要每次更新mysql时都使用install_name_tool了

sudo ln -s /usr/local/mysql/lib/libmysqlclient.18.dylib /usr/lib/libmysqlclient.18.dylib

2011-05-23 17:24:01

其他回答

谢谢,Ogapo !导出这个别名对我来说是可行的，然后我遵循链接，在我的例子中是mysql2。bundle在/Library/Ruby/Gems/1.8/ Gems/ mysql2-0.2.6/lib/mysql2/mysql2。所以我调整了install_name_tool来修改这个bundle，而不是~/中的一个。RVM，让它以应有的方式工作。

现在:

   $ otool -L /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle 
    /Library/Ruby/Gems/1.8/gems/mysql2-0.2.6/lib/mysql2/mysql2.bundle:
        /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/libruby.1.dylib (compatibility version 1.8.0, current version 1.8.7)
        /usr/local/mysql/lib/libmysqlclient.16.dylib (compatibility version 16.0.0, current version 16.0.0)
        /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 125.2.1)

2010-12-28 23:34:31

我从来不能让这些答案为我工作，但这是我用来使它为我工作的命令。这样你就不需要每次更新mysql时都使用install_name_tool了

sudo ln -s /usr/local/mysql/lib/libmysqlclient.18.dylib /usr/lib/libmysqlclient.18.dylib

2011-05-23 17:24:01

如果你正在使用OSX并使用brew安装mysql，你可以:

brew link mysql

如果你有问题的版本(我有mysql 5.7运行，而我的gem需要5.6.25)，你可以

brew unlink mysql
brew switch mysql 5.6.25

2016-02-19 07:01:44

我已经通过在我的项目文件夹中创建.rvmrc文件解决了这个问题:

rvm use <yourrubie>

然后进入我的项目路径

cd ~/myprojectpath

然后我就跑

bundle install

2011-09-13 13:11:34

我的luvlss命令版本:

Mac OSX 10.10.5

MySQL 5.6.27

乘客5.0.21

Sudo ln -s /usr/local/mysql-5.6.27-osx10.8-x86_64/lib/libmysqlclient.18。dylib /usr/lib/libmysqlclient.18.dylib

如果你正在尝试很多不同的链接，就像我做的那样，做一些清理:

取消链接/usr/lib/libmysqlclient.18.dylib

2015-11-13 19:07:28

库未加载:libmysqlclient.16。在OS X 10.6上使用mysql2 gem运行'rails server'时出现dylib错误

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