title: Installing PyGMO on Mac OS X Yosemite - missing boost-python3?
body: <p>I've been trying to install <code>PyGMO</code> on my Mac OS X 10.10. I'm using <code>Anaconda Python 2.3</code>, so it comes with <code>python 3.4</code>.</p>
  
  <p>I followed the instructions on <a href="http://esa.github.io/pygmo/install.html" rel="nofollow">http://esa.github.io/pygmo/install.html</a> and did try to build <code>boost</code> manually but didn't have much luck with building <code>boost-python</code>... The instructions I could find on the official website was very limited...</p>
  
  <p>While using ccmake to run the build file in pagmo/build directory, it complained that it did not find <code>boost-python3</code>...</p>
  
  <p>So I reverted to using <code>brew</code> to install <code>boost</code>. Thanks to the info I found on this page: <a href="http://ryanclouser.com/2015/07/16/Mac-OSX-Build-Boost-Python-with-Python3-Support/" rel="nofollow">http://ryanclouser.com/2015/07/16/Mac-OSX-Build-Boost-Python-with-Python3-Support/</a></p>
  
  <p>Now I have both boost and boost-python installed, but still the <code>ccmake</code> process for <code>PyGMO</code> complains about not being able to find <code>boost-python3</code>. </p>
  
  <p>Are there any environment variables I need to set? In the <code>ccmake</code> config screen do I need to set <code>Boost_PYTHON3_LIBRARY_RELEASE</code> or <code>Boost_PYTHON3_LIBRARY_DEBUG</code>?</p>
  
  <p><strong>LATEST EDIT: This SHA256 below mis-match is resolved. Turned out it was caused by source forge site being down when I ran the commands... Some better error messages would have helped.</strong></p>
  
  <p><em>However, when I tried to get boost and boost-python with <code>brew</code>, I got the following <code>SHA256</code> hash code mismatch error.</em></p>
  
  <p><em>Anyone has any idea how to fix this?</em></p>
  
  <pre><code>&gt;$ sudo brew install boost-python --with-python3
  ==&gt; Installing boost-python dependency: boost
  ==&gt; Downloading https://homebrew.bintray.com/b...
  ####################################################################### 100.0%
  ==&gt; Pouring boost-1.58.0.yosemite.bottle.tar.gz
   /usr/local/Cellar/boost/1.58.0: 10718 files, 486M
  ==&gt; Installing boost-python
  ==&gt; Downloading https://downloads.sourceforge....
  ==&gt; Downloading from http://downloads.sourceforge.n...
  ####################################################################### 100.0%
  Error: SHA256 mismatch
  Expected: fdfc204fc33ec79c99b9a74944c3e54bd78be4f7f15e260c0e2700a36dc7d3e5
  Actual: 818a4b8bbcb50878a8b1b9f71b4274d242ab46bf860c74676e98dec1d0248821
  Archive: /Library/Caches/Homebrew/boost-python-1.58.0.tar.bz2
  To retry an incomplete download, remove the file above.
  </code></pre>
  
  <p><em>Tried to delete the cached <code>boost</code> package files as suggested a few times but it didn't work either.</em></p>
  
  <p>Thanks guys.</p>