title: How to set gperftools path variables GPERFTOOLS_LIBRARIES GPERFTOOLS_INCLUDE_DIR?
body: <p>In a catkin project the catkin_make fails. The  CMakeLists includes</p>
  
  <pre><code>find_package(Gperftools REQUIRED) 
  </code></pre>
  
  <p>I have installed google-perftools:</p>
  
  <pre><code>google-perftools is already the newest version (2.4-0ubuntu5)
  </code></pre>
  
  <p>The CMake Error says it cannot find gperftools, or at least the path variables: </p>
  
  <pre><code>CMake Error at /usr/share/cmake-3.5/Modules/FindPackageHandleStandardArgs.cmake:148 (message):
    Could NOT find Gperftools (missing: GPERFTOOLS_LIBRARIES
    GPERFTOOLS_INCLUDE_DIR)
  Call Stack (most recent call first):
    /usr/share/cmake-3.5/Modules/FindPackageHandleStandardArgs.cmake:388 (_FPHSA_FAILURE_MESSAGE)
    tuw_mpn/FindGperftools.cmake:39 (find_package_handle_standard_args)
    tuw_mpn/CMakeLists.txt:40 (find_package)
  </code></pre>
  
  <p>After a few hours of searching I haven't found a description of the setup. Could someone please explain how I can solve this error?</p>
  
  <p>Thanks in advance and I hope I have provided enough information for this problem.</p>
  
  <p>Cheers,
  Michael</p>