threads in guile-1.8

[Pach Roman (DGS-EC/EHS2)]

Hello,

I have tried to move my software from guile-1.6 to 1.8.
The part using threads did not want to run.
So I tried a small test:

guile> (use-modules (ice-9 threads))
guile> (make-thread (lambda () '()))

and become a following error message:

In standard input:
   3: 0* (make-thread (lambda () (quote ())))
   3: 1  [call-with-new-thread #<procedure #f ()> #<procedure thread-handler #>]
standard input:3:1: In procedure call-with-new-thread in _expression_ (call-with-new-thread (lambda () #) %thread-handler):

standard input:3:1: Function not implemented

My question is, are the threads not implemented in version 1.8 ?

Best regards,
Roman Pach