Hi,

Continuing from a previous discussion I was having directly with Luigi Panzeri about this issue. I was having problems with unknown foreign type errors.

I'm running Leopard (10.5.1) on a PowerBook G4 under SBCL v.1.0.2

I've quoted his initial response. He suggested I ask here to see if someone else has the solution, though my initial problem was solved by his suggestion. I've run into a new problem though.

On Jan 18, 2008 10:50 AM, Luigi Panzeri matley@muppetslab.org wrote:

asdf-install should work fine. I have to admit that i have not tested cl-objc on a powerpc with leopard yet, though i don't think it is related to that. Maybe if you send email to cl-objc mailing list [1] someone else can also help you.

At any rate, I think that the problem is due to an older version of cffi you are using. Try to use the darcs repository [2] or a more recent tarball, as in older version ( < April 2007 IIRC) the interface for defining foreign type is changed.

This was the source of the type error messages, but when I fixed that and tried again, I got these errors from SBCL:

==== START OF LOG ==== Compiling CLOS bindings for Appkit framework in /usr/local/lib/sbcl/site/cl-objc/src/frameworks/Appkit-CLOS.lisp Control stack guard page temporarily disabled: proceed with caution

debugger invoked on a SB-KERNEL::CONTROL-STACK-EXHAUSTED: Control stack exhausted (no more space for function call frames). This is probably due to heavily nested or infinitely recursive function calls, or a tail call that SBCL cannot or has not optimized away.

Type HELP for debugger help, or (SB-EXT:QUIT) to exit from SBCL.

restarts (invokable by number or by possibly-abbreviated name): 0: [RETRY ] Retry performing #<ASDF:LOAD-OP NIL {11ABD101}> on #<ASDF:CL-SOURCE-FILE "generate-frameworks-bindings" {11AC19A9}>. 1: [ACCEPT] Continue, treating #<ASDF:LOAD-OP NIL {11ABD101}> on #<ASDF:CL-SOURCE-FILE "generate-frameworks-bindings" {11AC19A9}> as having been successful. 2: [RETRY ] Retry installation 3: [ABORT ] Exit debugger, returning to top level. ==== END OF LOG ====

Retrying does nothing to help with this problem, and even eventually leads to bad memory accesses on the part of SBCL, and an eventual seg fault.

Oh yeah, I'm using ASDF-Install to install Cl-ObjC by running the following in SBCL:

(require 'asdf) (require 'asdf-install) (asdf-install:install 'cl-objc)

Anyone have any idea what might be the problem?

Thanks, Jeremy Shoemaker