linux安装php程序magento提示pdo_mysql组件未安装，单安装之后仍无效，求解

我买了国外的linux服务器，安装php程序magento的时候，提示pdo_mysql组件未安装，如下错误提示：
There has been an error processing your requestpdo_mysql extension is not installed
Trace:
#0 /home/win7pko/public_html/lib/Zend/Db/Adapter/Abstract.php(448): Varien_Db_Adapter_Pdo_Mysql->_connect()
#1 /home/win7pko/public_html/lib/Zend/Db/Adapter/Pdo/Abstract.php(238): Zend_Db_Adapter_Abstract->query('SET NAMES utf8', Array)
#2 /home/win7pko/public_html/lib/Varien/Db/Adapter/Pdo/Mysql.php(333): Zend_Db_Adapter_Pdo_Abstract->query('SET NAMES utf8', Array)
#3 /home/win7pko/public_html/app/code/core/Mage/Core/Model/Resource/Type/Db/Pdo/Mysql.php(45): Varien_Db_Adapter_Pdo_Mysql->query('SET NAMES utf8')
#4 /home/win7pko/public_html/app/code/core/Mage/Core/Model/Resource.php(93): Mage_Core_Model_Resource_Type_Db_Pdo_Mysql->getConnection(Object(Mage_Core_Model_Config_Element))
#5 /home/win7pko/public_html/app/code/core/Mage/Core/Model/Mysql4/Abstract.php(297): Mage_Core_Model_Resource->getConnection('core_read')
#6 /home/win7pko/public_html/app/code/core/Mage/Core/Model/Mysql4/Abstract.php(312): Mage_Core_Model_Mysql4_Abstract->_getConnection('read')
#7 /home/win7pko/public_html/app/code/core/Mage/Core/Model/Mysql4/Cache.php(41): Mage_Core_Model_Mysql4_Abstract->_getReadAdapter()
#8 /home/win7pko/public_html/app/code/core/Mage/Core/Model/Cache.php(424): Mage_Core_Model_Mysql4_Cache->getAllOptions()
#9 /home/win7pko/public_html/app/code/core/Mage/Core/Model/Cache.php(459): Mage_Core_Model_Cache->_initOptions()
#10 /home/win7pko/public_html/app/code/core/Mage/Core/Model/App.php(1100): Mage_Core_Model_Cache->canUse('config')
#11 /home/win7pko/public_html/app/code/core/Mage/Core/Model/Config.php(409): Mage_Core_Model_App->useCache('config')
#12 /home/win7pko/public_html/app/code/core/Mage/Core/Model/Config.php(286): Mage_Core_Model_Config->_canUseCacheForInit()
#13 /home/win7pko/public_html/app/code/core/Mage/Core/Model/App.php(359): Mage_Core_Model_Config->loadModulesCache()
#14 /home/win7pko/public_html/app/code/core/Mage/Core/Model/App.php(295): Mage_Core_Model_App->_initModules()
#15 /home/win7pko/public_html/app/Mage.php(596): Mage_Core_Model_App->run(Array)
#16 /home/win7pko/public_html/index.php(296): Mage::run('en', 'store')
#17 {main}

但是我手动安装pdo_mysql之后，还是未解决这个问题
我用下面这个方法安装的
先到找需要的版本，我用的是稳定的版本。要先看看说明，特别是要注意mysql的php的版本。

wget
tar xzvf PDO_MYSQL-1.0.2.tgz
cd PDO_MYSQL-1.0.2
/usr/local/php/bin/phpize
Configuring for:
PHP Api Version: 20041225
Zend Module Api No: 20060613
Zend Extension Api No: 220060519
./configure --with-php-config=/usr/local/php/bin/php-config

经过configure就可以make了

make
make install注意pdo_mysql的全路径，我的是：

/usr/local/php/lib/php/extensions/debug-non-zts-20060613/pdo_mysql.so

然后在/usr/local/lib/php.ini

加上一句：

extension=/usr/local/php/lib/php/extensions/debug-non-zts-20060613/pdo_mysql.so

重新启动apache还是看不到加载pdo_mysql成功，这是为什么？