在Mac os x Lion上安装mysql2 gem

前几天我更新了MacOSX Lion。它破坏了我的rails安装，因为我不得不重新编译mysql。虽然我已经了解到，重新安装mysql2 gem已经成了问题。我在运行leopard，所以我将从32位运行到64位

  ~/code/rails/london (master)$ gem install mysql2 -- --with-mysql-dir=/usr/local/mysql
  Building native extensions.  This could take a while...
  ERROR:  Error installing mysql2:
    ERROR: Failed to build gem native extension.

          /Users/stewartmatheson/.rvm/rubies/ruby-1.9.2-p0/bin/ruby extconf.rb --with-mysql-dir=/usr/local/mysql
  checking for rb_thread_blocking_region()... *** extconf.rb failed ***
  Could not create Makefile due to some reason, probably lack of
  necessary libraries and/or headers.  Check the mkmf.log file for more
  details.  You may need configuration options.

  Provided configuration options:
    --with-opt-dir
    --without-opt-dir
    --with-opt-include
    --without-opt-include=${opt-dir}/include
    --with-opt-lib
    --without-opt-lib=${opt-dir}/lib
    --with-make-prog
    --without-make-prog
    --srcdir=.
    --curdir
    --ruby=/Users/stewartmatheson/.rvm/rubies/ruby-1.9.2-p0/bin/ruby
  /Users/stewartmatheson/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/mkmf.rb:368:in `try_do': The complier failed to generate an executable file. (RuntimeError)
  You have to install development tools first.
    from /Users/stewartmatheson/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/mkmf.rb:435:in `try_link0'
    from /Users/stewartmatheson/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/mkmf.rb:440:in `try_link'
    from /Users/stewartmatheson/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/mkmf.rb:552:in `try_func'
    from /Users/stewartmatheson/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/mkmf.rb:797:in `block in have_func'
    from /Users/stewartmatheson/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/mkmf.rb:693:in `block in checking_for'
    from /Users/stewartmatheson/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/mkmf.rb:280:in `block (2 levels) in postpone'
    from /Users/stewartmatheson/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/mkmf.rb:254:in `open'
    from /Users/stewartmatheson/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/mkmf.rb:280:in `block in postpone'
    from /Users/stewartmatheson/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/mkmf.rb:254:in `open'
    from /Users/stewartmatheson/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/mkmf.rb:276:in `postpone'
    from /Users/stewartmatheson/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/mkmf.rb:692:in `checking_for'
    from /Users/stewartmatheson/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/mkmf.rb:796:in `have_func'
    from extconf.rb:9:in `<main>'


  Gem files will remain installed in /Users/stewartmatheson/.rvm/gems/ruby-1.9.2-p0@london/gems/mysql2-0.3.7 for inspection.
  Results logged to /Users/stewartmatheson/.rvm/gems/ruby-1.9.2-p0@london/gems/mysql2-0.3.7/ext/mysql2/gem_make.out

~/code/rails/london（master）$gem安装mysql2--with mysql dir=/usr/local/mysql
构建本机扩展。这可能需要一段时间。。。
错误：安装mysql2时出错：
错误：无法生成gem本机扩展。
/Users/stewartmatesson/.rvm/rubies/ruby-1.9.2-p0/bin/ruby extconf.rb——带mysql dir=/usr/local/mysql
正在检查rb_线程_阻塞_区域（）…***extconf.rb失败***
由于某些原因无法创建Makefile，可能是缺少
必要的库和/或标题。查看mkmf.log文件了解更多信息
细节。您可能需要配置选项。
提供的配置选项：
--使用opt dir
--不带opt dir
--选择包含
--不带opt include=${opt dir}/include
--使用opt lib
--不带opt lib=${opt dir}/lib
--用make prog
--没有make prog
--srcdir=。
--库尔迪尔
--ruby=/Users/stewartmatheson/.rvm/rubies/ruby-1.9.2-p0/bin/ruby
/Users/stewartmatheson/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/mkmf.rb:368:在“try_do”中：编译器未能生成可执行文件。（运行时错误）
您必须首先安装开发工具。
from/Users/stewartmatheson/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/mkmf.rb:435:in'try_link0'
from/Users/stewartmatheson/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/mkmf.rb:440:in'try_link'
from/Users/stewartmatheson/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/mkmf.rb:552:in'try_func'
from/Users/stewartmatheson/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/mkmf.rb:797:in`block in have_func'
from/Users/stewartmatheson/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/mkmf.rb:693:in'block in checking_'
from/Users/stewartmatheson/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/mkmf.rb:280:in“延迟中的块（2级）”中
from/Users/stewartmatheson/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/mkmf.rb:254:in'open'
from/Users/stewartmatheson/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/mkmf.rb:280:in'block in delay'
from/Users/stewartmatheson/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/mkmf.rb:254:in'open'
from/Users/stewartmatheson/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/mkmf.rb:276:in“推迟”
from/Users/stewartmatheson/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/mkmf.rb:692:in'checking_'
from/Users/stewartmatheson/.rvm/rubies/ruby-1.9.2-p0/lib/ruby/1.9.1/mkmf.rb:796:in'have_func'
来自extconf.rb:9:in`'
Gem文件仍将安装在/Users/stewartmatheson/.rvm/gems/ruby-1.9.2中-p0@london/gems/mysql2-0.3.7进行检查。
结果记录到/Users/stewartmatheson/.rvm/gems/ruby-1.9.2-p0@london/gems/mysql2-0.3.7/ext/mysql2/gem_make.out

到目前为止，我已经重新编译并安装了MySQL，并将RVM更新到head。我也安装了Xcode，但是我没有运气

---

建议？

不知道这是否有帮助，但让我试试

要让mysql2 gem在我的OSX Lion下运行，运行Ruby 1.8.7:

安装mysql-下载mysql-5.5.14-osx10.6-x86\u 64

在mysql e MySQLCOM的.bash_配置文件中创建别名

• alias mysql=“/usr/local/mysql/bin/mysql”

• 别名mysqld=“sudo/Library/StartupItems/MySQLCOM/MySQLCOM”

安装

gem'mysql2'，'0.3.6'

创建此符号链接：

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

---

我通过重新安装ruby解决了这个问题，这似乎是必需的，因为编译器是在Lion中更新的。

我在系统ruby（Lion上的1.8.7）中安装了这个，如下所示：

从.dmg安装64位MySQL 5.5.19 64位

将/usr/local/mysql/lib添加到您的DYLD_LIBRARY_路径中（与符号链接解决方案相比，我更喜欢这个解决方案，但它们应该是等效的）。我通过以下方式在我的.bash_个人资料中这样做：

export DYLD_LIBRARY_PATH="/usr/local/mysql/lib:$DYLD_LIBRARY_PATH"

执行：

env ARCHFLAGS="-arch x86_64" sudo gem install mysql2 -- --with-mysql-dir=/usr/local/mysql --with-mysql-lib=/usr/local/mysql/lib --with-mysql-include=/usr/local/mysql/include --with-mysql-config=/usr/local/mysql/bin/mysql_config

从终端

$locate mysql\u config

可以找到它的路径

然后，

$sudogem安装mysql2--–使用mysql-config=/path/to/mysql\u-config

---

通过从源代码编译mysql，我成功地使其工作。在那之后，它似乎起了作用。我写了一篇关于这一点的博文，但我无法验证你的答案，因为我试图用ruby 1.9.2构建。我已经在3台Mac上实现了，有人对它进行了升级，所以它可能对使用ruby 1.8.7的人有用。这似乎对我有效[到目前为止，还不错]。创建链接的命令是：sudoln-s/usr/local/mysql/lib/libmysqlclient.18.dylib/usr/lib/libmysqlclient.18.dylib