It is not clear to me what exactly you are trying to achieve. Just some observations:

• The final cd server no purpose. After system finishes the command, its working directory is forgotten. Therefore, you can safely remove it.
• You do not test the exit status of the system command. Use

  my $status = system('cd ... ; make this');
  die $? if not 0 == $status;
  [download]

  See the documentation linked above for details.