title: How to change build directory in QtCreator?
body: <p>I have a cmake based C++ project done with QtCreator. I wrote the CMakeLists.txt files manually. When building either from the command line of from QtCreator, I get this directory structure, as expected:</p>
  
  <pre><code>MyProj/            - source code
  MyProj_build/      - object files and executable; I launch cmake from here
  </code></pre>
  
  <p>Now I would like the build directory to be on a different disk (a ram disk):  </p>
  
  <pre><code>/PathToRamDisk/MyProj_build/
  </code></pre>
  
  <p>When building from the command line, I launch cmake/make from the new build directory, and all the generated files are located in that directory. Fine. </p>
  
  <p>From QtCreator, even if I change the build path to the new one (Options/Build &amp; Run/General/Default build directory), the build is still done in the old directory. Is there another path to change? Where?</p>
  
  <p>Platform: QtCreator 3.3.0, Mac OSX  </p>