title: SFML headers not found when compiling using CMake and GCC (MacOS Sierra)
body: <p>I have been trying to use SFML in a CMake project, specifically the header <code>SFML/Audio.hpp</code>. I installed SMFL using Homebrew, and both the .dylib-files and the headers should be located correctly, in /usr/local/lib and /usr/local/include, respectively. </p>
  
  <p>Now running CMake works fine, telling me that it has <code>Found SFML 2.4.2 in /usr/local/include</code>.</p>
  
  <p>However, when compiling the project (using <code>make</code>), I get the following error:</p>
  
  <pre><code>/path/to/project.hpp:12:10: fatal error: 'SFML/Audio.hpp' file not found.
  </code></pre>
  
  <p>Does anyone know why this is happening?</p>
  
  <p><strong>Note</strong>: Compiling works fine for colleagues of mine using the same CMake- and source files on various Linux operating systems.</p>