[cl-gd-devel] FFI error (I assume)

[Jeffrey Cunningham]

Have you compiled the glue library? If not, go inside the cl-gd source  
directory and run make. It should produce cl-gd-glue.so.
If it complains, look close - you probably don't have all the dependencies  
built. You need the gd library 2.x and it has requirements of its own.

Jeff


On Sun, 23 Oct 2011 09:23:32 -0700, Leo Zovic <leo.zovic at gmail.com> wrote:

> Not sure whether this is a bug, or I don't have a required library set  
> up. Whenever I try to do
> (with-image-from file (img "/my/image/path.jpg")
>    (image-size img))
>
> I get an UNDEFINED-ALIEN-FUNCTION-ERROR
>
> trace follows
>
> Attempt to call an undefined alien function.
>   [Condition of type SB-KERNEL::UNDEFINED-ALIEN-FUNCTION-ERROR]
>
> Restarts:
> 0: [RETRY] Retry SLIME REPL evaluation request.
> 1: [*ABORT] Return to SLIME's top level.
> 2: [TERMINATE-THREAD] Terminate this thread (#<THREAD "repl-thread"  
> RUNNING {10032E9BA1}>)
>
> Backtrace:
>  0: (SB-KERNEL::UNDEFINED-ALIEN-FUNCTION-ERROR)
>  1: ("foreign function: #x422520")
>  2: (GD-IMAGE-CREATE-FROM-JPEG-FILE "/my/image.path.jpg"  
> #<SB-ALIEN-INTERNALS:ALIEN-VALUE :SAP >#X7FFFF37AFFF0 :TYPE (*  
> (SB-ALIEN:SIGNED 32))>)
>  3: (CREATE-IMAGE-FROM-FILE #<unavailable argument> NIL)
>  4: ((LAMBDA ()))
>  5: (SB-INT:SIMPLE-EVAL-IN-LEXENV ..)
>  6: (SWANK::EVAL-REGION "(with-image-from-file (img  
> \"/my/image.path.jpg\")\n	   (image-size img))\n")
>  7: ((LAMBDA ()))
>  8: (SWANK::TRACK-PACKAGE #<CLOSURE (LAMBDA #) {1004B732C9}>)
>  9: (SWANK::CALL-WITH-RETRY-RESTART "Retry SLIME REPL evaluation  
> request." #<CLOSURE (LAMBDA #) >{1004B731E9}>)
> 10: (SWANK::CALL-WITH-BUFFER-SYNTAX NIL #<CLOSURE (LAMBDA #)  
> {1004B731B9}>)
> 11: (SWANK::REPL-EVAL "(with-image-from-file (img  
> \"/my/image.path.jpg\")\n	   (image-size img))\n")
> 12: (SB-INT:SIMPLE-EVAL-IN-LEXENV (SWANK:LISTENER-EVAL  
> "(with-image-from-file (img \"/my/image.path.jpg\")\n	   >(image-size  
> img))\n") #<NULL-LEXENV>)
> 13: (SWANK::EVAL-FOR-EMACS (SWANK:LISTENER-EVAL "(with-image-from-file  
> (img \"/my/image.path.jpg\")\n	   >(image-size img))\n") "CL-GD" 172)
> 14: (SWANK::PROCESS-REQUESTS NIL)
> 15: ((LAMBDA ()))
> 16: ((LAMBDA ()))
> 17: (SWANK-BACKEND::CALL-WITH-BREAK-HOOK #<FUNCTION  
> SWANK:SWANK-DEBUGGER-HOOK> #<CLOSURE >(LAMBDA #) {10032F3139}>)
> 18: ((FLET SWANK-BACKEND:CALL-WITH-DEBUGGER-HOOK) #<FUNCTION  
> SWANK:SWANK-DEBUGGER-HOOK> >#<CLOSURE (LAMBDA #) {10032F3139}>)
> 19: (SWANK::CALL-WITH-BINDINGS ((*STANDARD-OUTPUT* . #)  
> (*STANDARD-INPUT* . #) (*TRACE-OUTPUT* . #) >(*ERROR-OUTPUT* . #)  
> (*DEBUG-IO* . #) (*QUERY-IO* . #) ...) #<CLOSURE (LAMBDA #)  
> {10032F3159}>)
> 20: (SWANK::HANDLE-REQUESTS #<SWANK::CONNECTION {1002E87B91}> NIL)
> 21: (SWANK::CALL-WITH-BINDINGS NIL #<CLOSURE (LAMBDA #) {10032F30F9}>)
> 22: ((FLET #:WITHOUT-INTERRUPTS-BODY-[BLOCK369]374))
> 23: ((FLET SB-THREAD::WITH-MUTEX-THUNK))
> 24: ((FLET #:WITHOUT-INTERRUPTS-BODY-[CALL-WITH-MUTEX]300))
> 25: (SB-THREAD::CALL-WITH-MUTEX ..)
> 26: (SB-THREAD::INITIAL-THREAD-FUNCTION)
> 27: ("foreign function: #x422520")
> 28: ("foreign function: #x419227")
>
> I've tried it running SBCL 1.0.40 from the Debian repos, as well as  
> 1.0.52 from the official SBCL site. I'm using the copy of cl->gb from  
> the latest quicklisp release, and I've tried it on both a 32 bit and 64  
> bit system (the included stack trace is from the 64->bit SBCL 1.0.40).
> Any ideas?
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