new to rtems , looking for some help

[Vijay Kumar Banerjee]

Sir ,
My name is Vijay .I'm new to rtems and trying to run my hello world

when I try to run

kernel/rtems/testsuites/configure

It stops giving an error report saying

unsupported host x86_64-pc-linux-gnu.

I'm not able to understand what am I missing , when I tried to run to run
hello.exe from
rtems/5/sparc-rtems/erc32/lib/rtems-5/tests .
It gives a hello world output .

please help .

Thanks
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