I would like the SBCL project to try to substantially improve, or else retire, support for Alpha and HPPA.
At the moment, those backends in particular are kept in the source more
for nostalgia than any other reason; and there's a problem with that,
because the nostalgia gets in the way of improving other things, because
of the hoops that developers need to go through to keep those backends compiling.
Moreover, just because we have tried to keep the backends compiling
gives no guarantee that they actually run; I'd be slightly surprised if
they don't crash pretty quickly in cold-init.
So, I think that the time has come to ask whether anyone needs those backends. You might! And if you do, we badly need your help to get the backend properly working and tested on a regular basis (ideally daily;
weekly at a pinch).
My expectation, though, is that no-one needs these backends enough to
commit enough cycles (of hardware and wetware) to sustain them for the
long term, and if no-one comes forward I expect to delete them from the sources after the June release of SBCL. (If someone steps up after that point, I would be happy to undelete a backend, again with the proviso
that there should be available hardware to test and human effort to keep working.)
I hope that this isn't a shock to anyone! By all means follow up if it
is.
I'm working on getting SBCL buildable on Debian using CLISP. Then we getMoreover, just because we have tried to keep the backends compiling
gives no guarantee that they actually run; I'd be slightly surprised if
they don't crash pretty quickly in cold-init.
I sent in some fixes, but so far I haven't been able to get SBCL to run
on Alpha or HPPA, both crash in cold-init. But that's also the case
for MIPS when I tested.
Generally, I try to help whereever I can but I'm by no means a Lisp
expert. There are Alpha and HPPA porters around in Debian and Gentoo
which might be interested to help.
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