a few things
one is this Ubuntu12.10 ? or debian stable ?
second it is never
a good idea to run "configure" as root ( can cause problems down the line)
Third it is also not a good idea to save software to the "Desktop" .It is a "special" folder and trying to build source code from there can cause problems
are you 100% sure ?
the error is rather clear, it is not installed .
if you did , then exactly How did you install it ?