Rails，MySQL和Snow Leopard

Question

我使用在WWDC上获得的光盘升级到了雪豹。

现在尝试运行我的一些Rails应用程序会抱怨sql

    (in /Users/coneybeare/Projects/Ambiance/ambiance-server)

!!! The bundled mysql.rb driver has been removed from Rails 2.2. Please install the mysql gem and try again: gem install mysql.

Importing all sounds in /Users/coneybeare/Projects/Ambiance/ambiance-sounds/Import 32/Compressed/

 -- AdirondackPeepers.caf

!!! The bundled mysql.rb driver has been removed from Rails 2.2. Please install the mysql gem and try again: gem install mysql.

rake aborted!

dlopen(/opt/local/lib/ruby/gems/1.8/gems/mysql-2.7/lib/mysql.bundle, 9): Library not loaded: /usr/local/mysql/lib/libmysqlclient.16.dylib

  Referenced from: /opt/local/lib/ruby/gems/1.8/gems/mysql-2.7/lib/mysql.bundle

  Reason: image not found - /opt/local/lib/ruby/gems/1.8/gems/mysql-2.7/lib/mysql.bundle

(See full trace by running task with --trace)

我本可以发誓我曾经修复过这个问题。问题是

sudo gem install mysql

不起作用并给出错误：

 Building native extensions.  This could take a while...

ERROR:  Error installing mysql:

    ERROR: Failed to build gem native extension.

/opt/local/bin/ruby extconf.rb install mysql

checking for mysql_query() in -lmysqlclient... no

checking for main() in -lm... yes

checking for mysql_query() in -lmysqlclient... no

checking for main() in -lz... yes

checking for mysql_query() in -lmysqlclient... no

checking for main() in -lsocket... no

checking for mysql_query() in -lmysqlclient... no

checking for main() in -lnsl... no

checking for mysql_query() in -lmysqlclient... no

Gem files will remain installed in /opt/local/lib/ruby/gems/1.8/gems/mysql-2.7 for inspection.

Results logged to /opt/local/lib/ruby/gems/1.8/gems/mysql-2.7/gem_make.out

有没有人得到mysql在雪豹上使用Rails呢？如果是这样，您的设置是什么，更好的是，我该怎么做才能重现它？

Answer 1

将mysql重建为64bit或安装64bit版本很重要，但是您还需要确保将mysql gem的本机部分也重建为64bit（如果您使用的是原始的Intel Core Duo macs，则该方法不适用）。这是魔术命令：env ARCHFLAGS="-arch x86_64" gem install mysql -- --with-mysql-config=/usr/local/mysql/bin/mysql_config每当在Snow Leopard上使用本机组件进行gem安装时，都应如上所述设置ARCHFLAGS。

Answer 2

我为此花了很长时间，终于在Snow Leopard上使用它。我最终从源代码安装了Ruby，RubyGems和MySQL（有关安装Ruby和RubyGems的信息，请参见Hivelogic教程。MySQL教程位于底部。）我终于可以安装宝石了，但是我仍然在dyld: lazy symbol binding failed: Symbol not found: _mysql_init  Referenced from: /Library/Ruby/Site/1.8/universal-darwin10.0/mysql.bundle  Expected in: flat namespacedyld: Symbol not found: _mysql_init  Referenced from: /Library/Ruby/Site/1.8/universal-darwin10.0/mysql.bundle  Expected in: flat namespaceTrace/BPT trap我终于删除了mysql.bundle（我不知道这是干什么的），这一切都奏效了。sudo rm -f /Library/Ruby/Site/1.8/universal-darwin10.0/mysql.bundle希望能对某人有所帮助。