Rebuilding error with unix-pthread

[Erik Hu]

I am new to Kaffe and I would like to rebuild with unix-ptherad + interpreter. 
I have some problems.  Does any one know how I can rebuild the Kaffe with unix-pthread ? 

I have tried with the follows, but it found some errors. 
----------------------
# ./configure --with-threads=unix-pthreads
# make 

... 
...
../kaffevm/.libs/libkaffevm.so: undefined reference to 'virtualMachine'
../kaffevm/.libs/libkaffevm.so: undefined reference to 'soft_fixup_trampoline'
collect2: ld returned 1 exit status
[make2]: *** [kaffe] Error 1
...
make: *** [all-recursive] Error 1
---------------------------

Thanks and regards,
Erik