^CMake Deprecation Warning at CMP0040-OLD-existing-target.cmake:1 \(cmake_policy\):
  The OLD behavior for policy CMP0040 will be removed from a future version
  of CMake.

  The cmake-policies\(7\) manual explains that the OLD behaviors of all
  policies are deprecated and that a policy should be set to OLD only under
  specific short-term circumstances.  Projects should be ported to the NEW
  behavior and not rely on setting a policy to OLD.
Call Stack \(most recent call first\):
  CMakeLists.txt:3 \(include\)$