Mavericks上的Rails + MySQL – 未加载库：libmysqlclient.18.dylib

当我在我的localhost（OSX Mavericks）上运行Rails（ rails s ）应用程序时，我收到此错误

 message:/Users/adam/.rvm/gems/ruby-2.0.0-p481/gems/mysql2-0.3.16/lib/mysql2.rb:8:in `require': dlopen(/Users/adam/.rvm/gems/ruby-2.0.0-p481/extensions/x86_64-darwin-13/2.0.0-static/mysql2-0.3.16/mysql2/mysql2.bundle, 9): Library not loaded: libmysqlclient.18.dylib (LoadError) Referenced from: /Users/adam/.rvm/gems/ruby-2.0.0-p481/extensions/x86_64-darwin-13/2.0.0-static/mysql2-0.3.16/mysql2/mysql2.bundle Reason: image not found - /Users/adam/.rvm/gems/ruby-2.0.0-p481/extensions/x86_64-darwin-13/2.0.0-static/mysql2-0.3.16/mysql2/mysql2.bundle from /Users/adam/.rvm/gems/ruby-2.0.0-p481/gems/mysql2-0.3.16/lib/mysql2.rb:8:in `' from /Users/adam/.rvm/gems/ruby-2.0.0-p481@global/gems/bundler-1.6.2/lib/bundler/runtime.rb:76:in `require' from /Users/adam/.rvm/gems/ruby-2.0.0-p481@global/gems/bundler-1.6.2/lib/bundler/runtime.rb:76:in `block (2 levels) in require' from /Users/adam/.rvm/gems/ruby-2.0.0-p481@global/gems/bundler-1.6.2/lib/bundler/runtime.rb:72:in `each' from /Users/adam/.rvm/gems/ruby-2.0.0-p481@global/gems/bundler-1.6.2/lib/bundler/runtime.rb:72:in `block in require' from /Users/adam/.rvm/gems/ruby-2.0.0-p481@global/gems/bundler-1.6.2/lib/bundler/runtime.rb:61:in `each' from /Users/adam/.rvm/gems/ruby-2.0.0-p481@global/gems/bundler-1.6.2/lib/bundler/runtime.rb:61:in `require' from /Users/adam/.rvm/gems/ruby-2.0.0-p481@global/gems/bundler-1.6.2/lib/bundler.rb:132:in `require' from /Users/adam/rubydev/logistadvise/config/application.rb:7:in `' from /Users/adam/.rvm/gems/ruby-2.0.0-p481/gems/railties-4.0.0/lib/rails/commands.rb:76:in `require' from /Users/adam/.rvm/gems/ruby-2.0.0-p481/gems/railties-4.0.0/lib/rails/commands.rb:76:in `block in ' from /Users/adam/.rvm/gems/ruby-2.0.0-p481/gems/railties-4.0.0/lib/rails/commands.rb:73:in `tap' from /Users/adam/.rvm/gems/ruby-2.0.0-p481/gems/railties-4.0.0/lib/rails/commands.rb:73:in `' from bin/rails:4:in `require' from bin/rails:4:in `' 

我不知道我是如何安装MySQL的，但我猜它是在名为Cellar的子文件夹中。

这是我的bash_profile样子：

 MYSQL=/usr/local/mysql/bin export PATH=$PATH:$MYSQL export DYLD_LIBRARY_PATH=/usr/local/mysql/lib:$DYLD_LIBRARY_PATH export PG_DUMP="/Applications/Postgres.app/Contents/MacOS/bin/" #PATH=$PG_DUMP:$PATH ... 

如何解决这个问题？

Answer 1

我有同样的问题。 因为我用brew安装它，所以DYLD的位置发生了变化。 试试这个：

 export DYLD_LIBRARY_PATH=/usr/local/mysql-5.1.67-osx10.6-x86_64/lib:$DYLD_LIBRARY_PATH 

首先检查上面的路径是否存在类似下面的内容，然后显然相应地调整导出路径：

ls -1 /usr/local/mysql-5.1.67-osx10.6-x86_64

你可能会做一个符号链接或其他东西。 这对我来说有点烦人，但是使用正确的路径为我修好了。

并且还尝试使用which mysql来检查你的路径中是否有mysql。 如果你显然没有得到任何输出，那么路径就会搞砸了。

Answer 2

 sudo install_name_tool -change libmysqlclient.18.dylib /usr/local/mysql/lib/libmysqlclient.18.dylib ~/.rvm/gems/ruby-2.0.0-p481/extensions/x86_64-darwin-13/2.0.0-static/mysql2-0.3.16/mysql2/mysql2.bundle 

这应该适合你。