ruby - 安装 gem dm-mysql-adapter 时出现 "undefined method ` split'"

Question

我正在尝试使用以下命令安装 gem dm-mysql-adapter 命令:

gem install dm-mysql-adapter -- --with-mysql-config=/usr/bin/mysql
--with-mysql-lib=/usr/lib/mysql

得到了这个结果:

Building native extensions.  This could take a while...
ERROR:  Error installing dm-mysql-adapter:
  ERROR: Failed to build gem native extension.

/usr/local/bin/ruby extconf.rb --with-mysql-config=/usr/bin/mysql
--with-mysql-lib=/usr/lib/mysql
*** 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=/usr/local/bin/ruby
  --with-mysql-config
extconf.rb:43:in `': undefined method `split' for nil:NilClass
(NoMethodError)


Gem files will remain installed in
/usr/local/lib/ruby/gems/1.9.1/gems/do_mysql-0.10.2 for inspection.
Results logged to
/usr/local/lib/ruby/gems/1.9.1/gems/do_mysql-0.10.2/ext/do_mysql/gem_make.out

有人遇到过同样的问题吗？我应该怎么做才能解决这个问题？ 谢谢!

Answer 1

我遇到了完全相同的问题。我在 OS X 10.6 上安装来自 dev.mysql.com 的最新 MySQL 5.1 包。

无论如何，事实证明修复非常简单，我只需要将 mysql bin 目录添加到我的路径中:

$ export PATH=$PATH:/usr/local/mysql/bin

然后，在相同的命令提示符下(因为路径只针对该 session 发生更改)，我使用以下命令安装了 gem:

sudo sudo env ARCHFLAGS="-arch x86_64" gem install dm-mysql-adapter

我知道这个问题已经有 3 个月了，但是这个页面是“无法在 osx 上安装 dm-mysql-adapter”的热门页面，希望这能帮助到一些人。