轨道&x2B；Mavericks上的MySQL-未加载库：libmysqlclient.18.dylib

当我在本地主机（OSX Mavericks）上运行Rails（

Rails s

）应用程序时，会出现此错误

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 `<top (required)>'
    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 `<top (required)>'
    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 <top (required)>'
    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 `<top (required)>'
    from bin/rails:4:in `require'
    from bin/rails:4:in `<main>'

---

如何解决这个问题？

我也有同样的问题。因为我是用brew安装的，

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

首先使用如下内容检查上述路径是否存在，并相应地调整导出路径：

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

你可能会做一个象征性的链接之类的。这对我来说有点烦人，但使用正确的路径可以解决这一问题

还可以尝试

哪个mysql

来检查路径中是否有mysql。如果您没有得到任何输出，显然路径是混乱的

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

这应该对你有用

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