Always the same message : Sorry, sudo must be setuid root

[Todd C. Miller]

Either the sudo binary you are running is not setuid root (type
which sudo to find the path) or it is located on a local filesystem
mounted with the nosuid flag or it is located on an NFS-mounted
filesystem mounted with the nosuid flag or exported the nosuid flag.

The warnings during linking just mean that your binary is a 64-bit
object that will not run on a 32-bit HP.

 - todd