1. root@ubuntu:~/firewalk# uname -m
  2. x86_64
  4. root@ubuntu:~/firewalk# ./configure
  5. beginning autoconfiguration process for firewalk-5.0...
  6. checking build system type... Invalid configuration `x86_64-pc-linux-gnu': machine `x86_64-pc' not recognized
  7. configure: error: /bin/sh ./config.sub x86_64-pc-linux-gnu failed.
  9. root@ubuntu:~/firewalk# ./configure --build=x86_64
  10. beginning autoconfiguration process for firewalk-5.0...
  11. checking build system type... Invalid configuration `x86_64': machine `x86_64' not recognized
  12. configure: error: /bin/sh ./config.sub x86_64 failed.