title: "No rule to make target 'install'"... But Makefile exists
body: <p>I am running into issues installing a C++ library. The <a href="http://en.wikipedia.org/wiki/CMake" rel="noreferrer">CMake</a> command is successful and generates the Makefile, but it gives a warning:</p>
  
  <pre><code>CMake Warning (dev) at CMakeLists.txt:27 (LINK_DIRECTORIES):
  This command specifies the relative path
  
  ../usr/local/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.
  </code></pre>
  
  <p>Line 27 in CMakeLists.txt is</p>
  
  <pre><code>Boost_LIBRARY_DIR_DEBUG:PATH=/usr/local/lib
  </code></pre>
  
  <p>I don't see why this warning would cause me any issues. But when I run make install, I get an error:</p>
  
  <pre><code>make: *** No rule to make target `install'.  Stop.
  </code></pre>
  
  <p>Any ideas?</p>