The Raspberry Pi is a series of small single-board computers. These machines are well supported by Gentoo. There are two main ways of installing Gentoo on them: cross-compiling using Raspberry Pi OS, or the gentoo "Minimal Installation CD", as a system to provide a chroot. Some older models are 32-bit only, others support 32-bit and 64-bit. Some hardware updates since 2012, 32/64-bit and different