mysql2 gem 安装错误

Question

我在安装包安装失败后尝试安装 mysql2 gem。 当我跑步时

$ sudo gem install mysql2 -- --with-mysql-config=/usr/local/mysql/bin/mysql_config

我收到以下错误：

构建原生扩展。这可能需要一段时间... 错误：错误 安装 mysql2: 错误: 无法构建 gem 原生扩展。

    /Users/jcollyer/.rvm/rubies/ruby-1.9.3-p327/bin/ruby extconf.rb --with-mysql-config=/usr/local/mysql/bin/mysql_config

正在检查 rb_thread_blocking_region()... 是的，正在检查 rb_wait_for_single_fd()...是检查mysql.h...是检查 对于 errmsg.h... 是检查 mysqld_error.h... 是创建 生成文件

编译client.c在client.c:1中包含的文件中：在文件中 包含在 ./mysql2_ext.h:8 中：包含在文件中 /Users/jcollyer/.rvm/rubies/ruby-1.9.3-p327/include/ruby-1.9.1/ruby.h:32： /Users/jcollyer/.rvm/rubies/ruby-1.9.3-p327/include/ruby-1.9.1/ruby/ruby.h:105:37： 错误：“ruby_check_sizeof_long”声明为带有负数的数组 大小 typedef char ruby​​_check_sizeof_long[SIZEOF_LONG == sizeof(long) ? 1：-1]； ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 在client.c:1中包含的文件中： 在 ./mysql2_ext.h:8 包含的文件中：在包含的文件中 /Users/jcollyer/.rvm/rubies/ruby-1.9.3-p327/include/ruby-1.9.1/ruby.h:32： 在包含的文件中 /Users/jcollyer/.rvm/rubies/ruby-1.9.3-p327/include/ruby-1.9.1/ruby/ruby.h:24： /Users/jcollyer/.rvm/rubies/ruby-1.9.3-p327/include/ruby-1.9.1/x86_64-darwin11.4.2/ruby/config.h:24:21：注意：实例化自：

定义 SIZEOF_LONG 8

                ^ In file included from client.c:1: In file included from ./mysql2_ext.h:8: In file included from

/Users/jcollyer/.rvm/rubies/ruby-1.9.3-p327/include/ruby-1.9.1/ruby.h:32： /Users/jcollyer/.rvm/rubies/ruby-1.9.3-p327/include/ruby-1.9.1/ruby/ruby.h:109:38： 错误：“ruby_check_sizeof_voidp”声明为带有负数的数组 大小 typedef char ruby​​_check_sizeof_voidp[SIZEOF_VOIDP == 大小（无效*）？ 1：-1]； ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 在文件中包含 client.c:1：在 ./mysql2_ext.h:8 中包含的文件中：在包含的文件中 从 /Users/jcollyer/.rvm/rubies/ruby-1.9.3-p327/include/ruby-1.9.1/ruby.h:32： 在包含的文件中 /Users/jcollyer/.rvm/rubies/ruby-1.9.3-p327/include/ruby-1.9.1/ruby/ruby.h:24： /Users/jcollyer/.rvm/rubies/ruby-1.9.3-p327/include/ruby-1.9.1/x86_64-darwin11.4.2/ruby/config.h:28:22：注意：实例化自：

定义 SIZEOF_VOIDP 8

                 ^ In file included from client.c:1: In file included from ./mysql2_ext.h:8: In file included from

/Users/jcollyer/.rvm/rubies/ruby-1.9.3-p327/include/ruby-1.9.1/ruby.h:32： 在包含的文件中 /Users/jcollyer/.rvm/rubies/ruby-1.9.3-p327/include/ruby-1.9.1/ruby/ruby.h:1382： 在包含的文件中 /Users/jcollyer/.rvm/rubies/ruby-1.9.3-p327/include/ruby-1.9.1/ruby/intern.h:34： /Users/jcollyer/.rvm/rubies/ruby-1.9.3-p327/include/ruby-1.9.1/ruby/st.h:67:45： 错误：“st_check_for_sizeof_st_index_t”声明为一个数组 负大小 typedef char st_check_for_sizeof_st_index_t[SIZEOF_VOIDP == (int)sizeof(st_index_t) ？ 1：-1]； ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 在文件中包括从 client.c:1：在 ./mysql2_ext.h:8 中包含的文件中：在包含的文件中 从 /Users/jcollyer/.rvm/rubies/ruby-1.9.3-p327/include/ruby-1.9.1/ruby.h:32： 在包含的文件中 /Users/jcollyer/.rvm/rubies/ruby-1.9.3-p327/include/ruby-1.9.1/ruby/ruby.h:24： /Users/jcollyer/.rvm/rubies/ruby-1.9.3-p327/include/ruby-1.9.1/x86_64-darwin11.4.2/ruby/config.h:28:22：注意：实例化自：

定义 SIZEOF_VOIDP 8

                 ^ 3 errors generated. make: *** [client.o] Error 1

Gem 文件将继续安装在 /Users/jcollyer/.rvm/gems/ruby-1.9.3-p327/gems/mysql2-0.3.11 检查。结果记录到 /Users/jcollyer/.rvm/gems/ruby-1.9.3-p327/gems/mysql2-0.3.11/ext/mysql2/gem_make.out

$ 哪个红宝石

/Users/jcollyer/.rvm/rubies/ruby-1.9.3-p327/bin/ruby

$哪里是mysql

/usr/local/bin/mysql

我错过了什么？

Answer 1

试试这个希望它会有所帮助

cd /usr/local/lib/ruby/gems/1.8/gems/mysql-2.7

gem 安装 mysql -- --with-mysql-config=/usr/local/mysql/bin/mysql_config

如果这不起作用，请安装 libmysqlclient15-dev

当你不能构建“原生扩展”时，这意味着有一些库 或缺少 lib-dev。一般来说，你需要做一个

sudo apt-get install 
lib-???-dev

或 sudo apt-get install build_essential.

'sudo apt-get install libmysqlclient15-dev'

Answer 2

如果您打算为您的应用程序使用 mysql2 gem，那么您需要在安装之前安装 libmysqlclient-dev 包。更多详情：
http://ryanbigg.com/2010/12/ubuntu-ruby-rvm-rails-and-you/