This file describes what the contents of this directory are. ibcs-??????.tar.gz - the kernel emulator for ibcs2 syscalls. You need this if you need anything in this directory. libc_s-??????.tar.gz - source code for ibcs2 compliant version of libc. This can be used to build libc_s for SCO binaries, and libc.so.1, libsocket.so and libnsl.so for SVr4 binaries. sco-shrlib-??????.tar.gz - precompiled libraries for SCO binaries. Compiled from libc_s-?????.tar.gz svr4-shrlib-?????.tar.gz - precompiled libraries for SVr4. Compiled from libc_s-??????.tar.gz. The directory coff-tools contains assemblers, linkers and debuggers for compiling, linking etc, etc, files in the coff format.