Linux (Ubuntu) Installation - 3.1
From IHRIS Wiki
Getting Ready
Here are a list of packages you need installed on your system before you install the iHRIS Suite. First we make sure the appropriate Ubuntu packages are installed:
sudo apt-get install apache2-mpm-prefork apache2-prefork-dev mysql-server mysql-client php5 php5-cli php5-gd php5-mysql libapache2-mod-php5 php-pear
There are some optional packages you may wish to install:
sudo apt-get install php5-gd php5-tidy
which are used to for inserting images into PDF output of reports and for exporting XML files in a nicely formatted manner