mysql2 gem安装失败

Question

我的堆栈如下：

• CentOS 6.3
• 安装了MySQL 5.5 (遵循http://www.if-not-true-then-false.com/2010/install-mysql-on-fedora-centos-red-hat-rhel/的步骤，因为yum仍然有MySQL 5.1，如果我尝试安装任何与mysql相关的包，它当然会中断，因为yum将期望5.1)。 $> mysql -版本mysql 14.14远端5.5.27，用于Linux (x86_64)，使用readline5.1 $> ruby -版本ruby 1.9.3p194 (2012-04-20修订版35410) x86_64-linux 维恩·E·塞金( $> E. Seguin，Michal Papis https://rvm.io/ )的rvm 1.14.6 (稳定版) $> uname -a Linux localhost.mkf 2.6.32-279.5.1.el6.x86_64 #1 SMP Tue Aug 14 23:54:45 UTC 2012 x86_64 GNU/Linux $> nginx -v nginx版本： $> rails -v Rails 3.2.6

当我试图安装mysql2 gem时，会出现以下错误：

$> gem install mysql2
Building native extensions.  This could take a while...
ERROR:  Error installing mysql2:
        ERROR: Failed to build gem native extension.

        /usr/local/rvm/rubies/ruby-1.9.3-p194/bin/ruby extconf.rb
checking for rb_thread_blocking_region()... yes
checking for rb_wait_for_single_fd()... yes
checking for mysql.h... no
checking for mysql/mysql.h... no
-----
mysql.h is missing.  please check your installation of mysql and try again.
-----
*** 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
--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/rvm/rubies/ruby-1.9.3-p194/bin/ruby
--with-mysql-config
--without-mysql-config


Gem files will remain installed in /usr/local/rvm/gems/ruby-1.9.3-p194/gems/mysql2-0.3.11       for inspection.
Results logged to /usr/local/rvm/gems/ruby-1.9.3-p194/gems/mysql2-    0.3.11/ext/mysql2/gem_make.out

当我这么做

$> find / -name mysql.h  

我什么也得不到

Mysql正在正常运行，我已经在其中创建了db和表，sql正在运行，没有任何问题。

是否有可能在我的堆栈中安装mysql2 gem？如果是的话，你知道我错过了什么吗？

UPDATE：我尝试了yum install mysql-devel它会引发错误，因为我已经安装了mysql5.5，使用yum install mysql-devel存储库。而百胜则期望mySql 5.1

Answer 1

我把它做好了：

 wget http://cdn.mysql.com/Downloads/MySQL-5.5/MySQL-devel-5.5.27-1.el6.x86_64.rpm 

 rpm -Uvh MySQL-devel-5.5.27-1.el6.x86_64.rpm 

 gem install mysql 

 gem install mysql2

Answer 2

你安装mysql了吗？如果不这样做，还需要安装mysql dev文件，以便对gem进行本机编译。

sudo yum install mysql-devel

检查这个已经解释过的Errors Installing mysql2 gem via the Bundler

Answer 3

如果得到这样的错误

$ sudo yum install mysql-devel

Loaded plugins: fastestmirror, presto
Loading mirror speeds from cached hostfile
10gen                                                                                                                                                      | 2.5 kB     00:00
base                                                                                                                                                       | 3.7 kB     00:00
centosplus                                                                                                                                                 | 3.4 kB     00:00
Not using downloaded repomd.xml because it is older than what we have:
  Current   : Wed Feb 12 07:03:25 2014
  Downloaded: Sat Jan  4 21:29:15 2014
contrib                                                                                                                                                    | 2.9 kB     00:00
epel                                                                                                                                                       | 4.2 kB     00:00
epel/primary_db                                                                                                                                            | 5.9 MB     00:00
extras                                                                                                                                                     | 3.4 kB     00:00
newrelic                                                                                                                                                   |  951 B     00:00
rpmforge                                                                                                                                                   | 1.9 kB     00:00
rpmforge-extras                                                                                                                                            | 1.9 kB     00:00
ucloud                                                                                                                                                     | 1.3 kB     00:00
updates                                                                                                                                                    | 3.4 kB     00:00
updates/primary_db                                                                                                                                         | 2.0 MB     00:00
Setting up Install Process
Resolving Dependencies
--> Running transaction check
---> Package mysql-devel.x86_64 0:5.1.73-3.el6_5 will be installed
--> Processing Dependency: mysql = 5.1.73-3.el6_5 for package: mysql-devel-5.1.73-3.el6_5.x86_64
--> Finished Dependency Resolution
Error: Package: mysql-devel-5.1.73-3.el6_5.x86_64 (updates)
           Requires: mysql = 5.1.73-3.el6_5
           Installed: mysql-5.5.34-1.el6.remi.x86_64 (@remi)
               mysql = 5.5.34-1.el6.remi
           Available: mysql-5.1.71-1.el6.x86_64 (base)
               mysql = 5.1.71-1.el6
           Available: mysql-5.1.73-3.el6_5.x86_64 (updates)
               mysql = 5.1.73-3.el6_5
 You could try using --skip-broken to work around the problem
 You could try running: rpm -Va --nofiles --nodigest

尝尝这个

sudo yum --enablerepo=remi -y install mysql-devel