Laravel 图片处理 Intervention Image 安装问题

测试环境是 Ubuntu 14.04 64 手工安装的 LNMP 环境 (PHP 5.5 Mysql 5.5)

然后安装 Intervention Image 这个扩展，这个要求
PHP >= 5.3
Fileinfo Extension

主要是安装这个 Fileinfo 根据教程一路走过来，发现最后还是提示

Starting to download Fileinfo-1.0.4.tgz (5,835 bytes) .....done: 5,835 bytes 3 source files, building running: phpize Cannot find config.m4. Make sure that you run '/usr/bin/phpize' in the top level source directory of the module If the command failed with 'phpize: not found' then you need to install php5-dev packageYou can do it by running 'apt-get install php5-dev' as a root userERROR: `phpize' failed

网上找了 N 多办法了 还是无解啊？ 有在 Ubuntu14.04 PHP5.5 成功安装过的人咩？