Many software packages for the various flavors of UNIX, including Linux, are distributed as compressed archives of source files. The same package may be « built » to run an various target machines, and this saves the author of the software from having to produce multiple distributions. A single distribution of a software package may thus end up running, in various incarnations, on an Intel box, a DEC Alpha, a RISC workstation, or even a mainframe. Unfortunately, this puts the responsibility of actually « building » the software on the end user, the de facto « system administrator », the fellow sitting at the keyboard… you. Take heart, though, the process is not nearly as terrifying or mysterious as it seems, and this guide will attempt to demonstrate just that.