Wackamole X64 support?

I'm building out a mixed 32 bit & 64 bit cluster and I need to install
wackamole on both SLES 10 x64 and SLES 10 x32.  I get the following error
when trying to build wackamole:

checking build system type... Invalid configuration
`x86_64-unknown-linux-gnu': machine `x86_64-unknown' not recognized
configure: error: /bin/sh ./config.sub x86_64-unknown-linux-gnu failed

Is there a work around I can do to get wackamole configured and running on
my x64 server builds?

Thanks,

-Tim Spangler