Solution: thr_spinlock.c and qtorrent

> Fatal error 'Spinlock called when not threaded.' at line 83 in file  
> /usr/src/lib/libpthread/thread/thr_spinlock.c (errno = 0)
> Abort trap (core dumped)
> Error: There was an error creating the features file.
> *** Error code 1
>
> what's wrong??

create the file:
  /etc/libmap.conf

and add these two lines:
libpthread.so.1         libc_r.so.5
libpthread.so           libc_r.so

that's all ...