The Linux ABI is a patch to the Linux kernel that allows a linux system to run foreign binaries. It was developed as a follow-on to the iBCS/iBCS2 project for the older 2.2 kernel. It supports binaries from SCO OpenServer, SCO OpenDesktop, SCO Unix 3.x, SCO Xenix 386, SCO Xenix 286 (with userspace x286 emulation), SCO UnixWare 7, Caldera OpenUnix 8, SUN Solaris 2, System V Release 3 (SVR3), System V Release 4 (SVR4), Wyse V/386, and ISC Interactive Unix. Only the Intel i386 platform is currently supported
