This directory contains the components of the Common Runtime Support:

1. memory management (files gbc.c alloc.c)
2. dumping an image (files unex*.c and unixsave.c)
3. dynamic loading (dld.c)
4. networking support (tcp.c) These are built into a library (libcrs.a) which is searched when building a Lisp application.

   Implementations of unexec for various architectures is provided. Some of them are those provided with GNU Emacs. However we cannot use for instance unexsunos4, which expects a dynamic linked executable, since this prevents subsequent loading of files (procedures such as memcpy and _setjmp do not appear in the load map).

   As a fall back we use unixsave.c, which works for all Suns, HP9000/300, Vax, DOS/go32, Apollo, IBM/RT, Sequent.