Where I can find a simple posix RTEMS example + Makefile ?

[Matteo]

Hi
where I can find a simple example of posix threads with RTEMS and the relative 
makefile ?
Just a very simple example that launch one task to say ” Hello World ! “, so I 
can see which parameters I have to set to launch a simple posix thread, so I 
can start work from that simple example. 
I have configured rtems for i386 pc386 with enable posix.

Thanks so much in advance

Matteo