^CMake Warning \(dev\) at CMP0079-iface/CMakeLists.txt:[0-9]+ \(target_link_libraries\):
  Policy CMP0079 is not set: target_link_libraries allows use with targets in
  other directories.  Run "cmake --help-policy CMP0079" for policy details.
  Use the cmake_policy command to set the policy and suppress this warning.

  Target

    top

  is not created in this directory.  For compatibility with older versions of
  CMake, link library

    foo

  will be looked up in the directory in which the target was created rather
  than in this calling directory.
This warning is for project developers.  Use -Wno-dev to suppress it.$