RTEMS for bare-bones ARM

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Hi All!

I am currently trying to get a version of RTEMS for ARM processors to  
compile.
Following the instructions from

http://ww.rtems.com/wiki/index.php/RTEMSAda

Everything seems to go fine until I try to compile the Ada Cross- 
Compiler. When making
adalib, the compilation stops, giving the following reason:

.../newlib/libc/include/sys/dirent.h:10:2: error: #error "<dirent.h>  
not supported"

It would seem, that the Ada Runtime is a difficult beast.... :-)

Is there a way to tell make not to try to generate a file-system? How  
do I select
the capabilities I need in the run-time?

Thanks in advance,

Marc