[PD] how to install and use GPIO external

I'm trying to figure out how to use the [gpio] external and I'm totally lost on how to install it and then how to use it inside PD on my raspberry pi. I did download the external from Miller Puckette's website but that is about as far as I have been able to get. I would like to be able to configure 4 GPIO pins as inputs and read their state within my PD patch.

Could anyone provide me with any help on how I would go about installing this patch and using it in PD on the pi? Also, I found a thread in the list serve archive where someone had attached a draft of instructions on how to install and use the GPIO external but unfortunately the attached file was not available. Could someone send me these instructions if you have them?

Thanks, Josh