dynamic-link on libc

[Jeff Mickey]

Hi guilers!

I cannot seem to call `dynamic-link' on libc.

I'm trying to write a simple, dumb wrapper around syslog using the 
(system foreign) dynamic library to learn how to use the dynamic 
ffi.

(use-modules (system foreign))

(define libcsyslog (dynamic-link "libc"))  (define syslog 
 (let ((f (pointer->procedure 
	    void (dynamic-func "syslog" libcsyslog) (list int 
	    '*)))) 
   (lambda (level msg) 
     (let* ((clevel level) 
	     (cmsg (string->pointer msg))) (f clevel cmsg))))) 
	(syslog 3 "hello there") 


This works when I symlink /lib/x86_64-linux-gnu/libc.so.6 to 
libc.so, but it looks like the libtool library that is doing the 
load doesn't accept names that end in ".6" as a library name, and 
when I used the full path it just says "file not found".

Anyone have suggestions? I looked at the dynl.c sysdep_dynl_link 
function, but I'm not sure I understand libtool well enough to 
know what lt_dlopenext should be doing.

I should add I tested this on a debian system with a debian 
provided guile, and a "user installed guix" guile install as well.

Thanks!

 //  codemac