as 64 bit machines are about to become much more
common (as they just aren't alpha's anymore but
powerpc and intel), saved these old notes about some
prior attempts.
Maybe these notes aren't relevant to the new Scheme
48, but this is a place holder to confirm we can work
on a 64 bit box.
-bri
From: Steven Jenkins <sjenkins@ms.com>
To: scsh@martigny.ai.mit.edu
Subject: building a 64-bit image
Date: Mon, 24 Mar 1997 11:32:33 -0500
I'm playing around with building a scsh for Alphas,
and here is what
I'm doing. Could someone make a suggestion on why
things are breaking
from the initial.image?
My steps:
1) Build scheme48 on Solaris
2) Edit vm/memory.scm to change bytes-per-cell to 8
instead of 4.
Yes, I know I should make more changes than just
this. However,
it should at least produce a loadable initial.image
3) make i-know-what-i-am-doing to recreate the *.[ch]
files
# perhaps I should try
# make i-dont-quite-know-what-im-doing
# instead..
4) make build/initial.image
5) Tweak things so that I don't encounter the problems
Shriram mentioned
about multi-platform installations..
6) On an Alpha, try 'make'. However, this does not
work -- there
are compilation warnings, and the vm is apparently
runnable, except
that it croaks on the initial.image with:
zap /u/sjenkins/scheme48-0.46 141$ make
build/build-usual-
image . "`pwd`/scheme" 'scheme48.image' './scheme48vm'
'buil\
d/initial.image'
Incompatible bytes-per-cell in image
Image file "build/initial.image" is unusable.
*** Exit 1
Stop.
Looking through source code, there is apparently a
check for the rough
equivalent of a magic number in an image that is
failing (cf vm/heap.scm
for the error string and misc funs).
So does anyone who has mucked with scheme48 (Shriram,
Olin, Richard, ???) have
any suggestions?
(Historical note: I have built a semi-successful
scheme48 port using
Digital's mx utility, but I find it much better to
actually be able to
build rather than cobble something together).
Steven
