rtai-source binary package in Ubuntu Precise powerpc

 RTAI is a realtime extension with a broad variety of services which
 make realtime programmers' lifes easier. Some of them are
 .
  choose between FIFO and RR scheduling policies on a per task basis.
  extended POSIX APIs and message queues, in kernel and user space
  semaphores can be typed as: counting, binary and resource
  a mailbox implementation
  LXRT for hard real time in user space
 .
 This package contains the patches for modifying the kernel, and sources for
 building the kernel modules, module dependent runtime tools and the testsuite.

Source package