Getting error while building PSQL 17.1 on AIX box

Hi

I am getting error while building PSQL 17.1 on AIX box-

bash-5.1# uname -a
AIX AIXLPHPOM01 1 7 00F8B83A4C00

bash-5.1# ./configure --prefix=/home/raghu/postgres/psql17/build --without-readline
checking build system type... powerpc-ibm-aix7.1.4.0
checking host system type... powerpc-ibm-aix7.1.4.0
checking which template to use... configure: error:
*******************************************************************
PostgreSQL has apparently not been ported to your platform yet.
To try a manual configuration, look into the src/template directory
for a similar platform and use the '--with-template=' option.

Please also contact <pgsql-bugs(at)lists(dot)postgresql(dot)org> to see about
rectifying this. Include the above 'checking host system type...'
line.
*******************************************************************
Can you please revert with a solution for this?

Regards
Raghu