The Apollo version now supports dumping just fine.  I run it on sr10.3. It
certainly requires at least sr10.0, and maybe sr10.2.

You should use config/s-bsd4-3.h.  I don't think it would build with sys5.3.

When you try to dump emacs, you may get the message ".rwdi section needs
relocation."  This means you are linking with some code that has compressed
data sections.  In some cases this comes from linking with X libraries.  Try
using shared X libraries instead.  With some versions of Domain/OS this is
as simple as removing the "-lX11" from the link command line.  If you still
have trouble, try compiling with the "-W0,-ncompress" option (probably a
good idea anyway).

Most of the Apollo work was done by Leonard Zubkoff and John Vasta. I just
assembled pieces and merged it in to Epoch 4.0.

  - Jim Rees, University of Michigan, June 1992.

