Re: [Sbcl-devel] Mac OS X / Darwin port

[Daniel B. <da...@te...>]

"Thomas F. Burdick" <tfb@OCF.Berkeley.EDU> writes:

> I'm about to get a new-to-me iBook, and since I'd be even less likely
> to install Linux on a Mac than I would be on a Sun, I'm thinking about
> an OS X port of SBCL.  It looks like OpenMCL now works on Darwin, so I
> should be able to use that for bootstrapping.  Are there any problems
> anyone knows about, that I should be aware of from the outset?

SA_SIGINFO signals don't exist - or do exist but don't work (I forget
which) - in OSX 10.1.  It's said that this is fixed in 10.2, but I
don't think I've talked to anyone who's verified this directly

SA_SIGINFO or something equivalently useful (read and write the
register contents from  a signal handler) is essential for SBCL: your
options here are to hope that 10.2 has added the necessary widgetry,
or to borrow the workaround that OpenMCL (which has basically the same
problem) uses

Other than that, probably all you need do is figure out a sensible
memory map.  As the SBCL internals cliki says
<URL:http://ww.telent.net/sbcl-internals/PPC>, it should mostly not be
rocket science

(Unless you want working floating point traps)


-dan

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