title: OS X 10.11 (El Capitan) Macport issues
body: <p>I tried to run $ sudo port upgrade outdated on my Mac and had build issues
  with: 
  gcc48, 
  texlive-bin
  clang-3.5
  clang-3.7, 
  etc.</p>
  
  <p>Macports has some of the issues I've encountered:</p>
  
  <p><a href="https://trac.macports.org/ticket/48471" rel="nofollow">https://trac.macports.org/ticket/48471</a></p>
  
  <p>I tried applying the patch (define_non_standard_clang_macros.patch ) from the Macport incident above and I also manually updating: /usr/include/Availability.h </p>
  
  <pre><code>$ sudo patch /usr/include/Availability.h define_non_standard_clang_macros.patch 
  Password:
  patching file /usr/include/Availability.h
  Hunk #1 FAILED at 1141.
  patch: **** Can't rename file /usr/include/Availability.h to /usr/include/Availability.h.orig : Operation not permitted
  
  $ sudo cp Availability.h /usr/include/Availability.h
  cp: /usr/include/Availability.h: Operation not permitted
  </code></pre>
  
  <p>Any ideas?</p>