Command:
sudo pecl install mongo
I am not sure why I get the missing phpize.m4 error and why I'm getting all these 'stat' errors. I've added the same version of php (5.6.9) to the /usr/lib64/php/5.6/ folder and ran ./configure which executes with no errors.
pear version
I had a few dependencies that were not properly installed.
Instead of php-devel I needed php56-devel for my specific version.