[Buildroot] How To compile RTAI?

[Tobias Sachs]

Hello there,

I've a question. Every time I try to compile a Kernel with RTAI support 
I get the following error
"checking for RTAI base technology
configure: error: HAL patch not applied/enabled in 
/buildroot/output/build/linux-2.6.39.4
make: *** [/buildroot/output/build/rtai-3.8.1/.stamp_configured] Error 1"

I tried to compile the Kernel versions 3.0.1, 3.3.4, 3.3.5 and the 
2.6.39.4 but I get the same error. Could anyone tell me which Kernel 
Version could I use with RTAI and i.MX28?

Thanks for replies
Tobias Sachs