How to set up boost easily with clang with brew installation on OS X
<p>I installed boost 1.60 via brew on OS X, El Capitan 10.11.4</p>

<pre><code>&gt; brew install boost
==&gt; Downloading https://homebrew.bintray.com/bottles/boost-1.60.0_1.el_capitan.bottle.tar.gz
######################################################################## 100.0%
==&gt; Pouring boost-1.60.0_1.el_capitan.bottle.tar.gz
  /usr/local/Cellar/boost/1.60.0_1: 11,139 files, 436.0M
</code></pre>

<p>However, it's not easy to use <code>&lt;boost/...&gt;</code> in my clang tool chains. It simply can't find the boost directory.</p>

<pre><code>&gt; make
Scanning dependencies of target foo
[ 50%] Building CXX object CMakeFiles/foo.dir/foo.cpp.o
foo.cpp:16:10: fatal error: 'boost/type_index.hpp' file not found
#include &lt;boost/type_index.hpp&gt;
         ^
1 error generated.
</code></pre>

<p>I know that I have to set some environment variables or add <code>-I</code>. But I'd like to see the best way to resolve this problem for boost.</p>