%general-entities; ]> Multilib is essentially the ability to at least execute software that was built for another architecture different from your own. For example, and most common: the user has a x86_64 CPU that is wanting to execute software built to run on a x86 CPU. To better establish terms, x86_64 is 64-bit and amd64, whereas x86 is 32-bit and ix86 where x can vary from 3 to 6 usually. Multilib can be achieved firstmost by having the hardware capable of x86 emulation, then having libraries built for x86. We will get into how to compile x86 libraries and software and their execution later, but know the general process for LFS and BLFS is to almost always compile software and that's what we'll be doing. It is worth nothing that when covering multilib, we mean emulation of 32-bit software on a 64-bit CPU and this is the case for most users nowadays, but the future is heading towards ARM64 slowly. We will not be covering ARM at this time. If you are on a 32-bit CPU, you are not capable of multilib. If you are on a 64-bit CPU, and are capable of 32-bit emulation, then you are capable of multilib. Run uname -m to find out if you are on a capable CPU.