Windows path error

$ cmake .
-- Found Qt4: /usr/bin/qmake (found suitable version "4.8.3", required is "4.8.3")
CMake Warning (dev) at CMakeLists.txt:21 (link_directories):
  This command specifies the relative path

    C:/Libs/openmm51/lib

  as a link directory.

  Policy CMP0015 is not set: link_directories() treats paths relative to the
  source dir.  Run "cmake --help-policy CMP0015" for policy details.  Use the
  cmake_policy command to set the policy and suppress this warning.
This warning is for project developers.  Use -Wno-dev to suppress it.

CMake Warning (dev) at CMakeLists.txt:21 (link_directories):
  This command specifies the relative path

    C:/Program Files/NVIDIA GPU Computing Toolkit/CUDA/v5.5/lib/Win32

  as a link directory.

  Policy CMP0015 is not set: link_directories() treats paths relative to the
  source dir.  Run "cmake --help-policy CMP0015" for policy details.  Use the
  cmake_policy command to set the policy and suppress this warning.
This warning is for project developers.  Use -Wno-dev to suppress it.

-- Configuring done
-- Generating done
-- Build files have been written to: /home/jesse/Documents/git_projects/fahbench