DD-WRT provides a lot of builds for different flash chip sizes. Sometimes though, you might need a module or two that isn’t included in the compiled firmware. Fortunately because of the way DD-WRT is developed (open source) you are able to grab the DD-WRT kernel sources from SVN and do a bit of DIY kernel module compiling. Though its not as simple as it sounds, but hopefully this general guide you get you on your way in compiling kernel modules. For this specific guide I am demonstrating how to compile IPv6 modules.
DirectAdmin is a control panel designed to make managing a web server easier. With control panels like DirectAdmin, installing and updating packages isn’t as simple as running apt-get install or yum install, most come with their own build system where packages are compiled with specific settings. DirectAdmin, is no different. It uses its own system called custombuild. At the time of writing this the latest stable version of custombuild is 1.2, though custombuild 2.0 is nearing stable release (currently RC5), but on a production server after running custombuild 1.2 for a while you’d be a little nervous as to how the jump from Apache 2.2 to 2.4 will be, or how your PHP apps are going to handle the jump from 5.3/5.4 to 5.5? Well luckily for you and myself I have a test server lined up to be able to perform the update (or migration I guess). Find out how I got on.