文件异常错误laravel和fileinfo扩展依赖项

Could Not Install / Enable fileinfo extension

I have referred to this https://stackoverflow.com/a/10194105/1679510

which says fileinfo is by default enabled i php5.3+

I have php5.5.9 on my ubuntu, but php.ini file did not have any filenfo extension information.

I have also checked /etc/php5/mods-available and no ini file for fileinfo

Running pecl install fileinfo give depricatd error, which is expected.

How to install the fileinfo extension.

Edit1:

After running php -m fileinfo can be seen in the list, however the file exception error in laravel log lead me to debugg into this is -> http://pastebin.com/FaENLrLH

Is it really a fileinfo error? or something else?