Xcode "file not found with <angled> include; use "quote" instead
<p>I am trying to include boost library to xcode, and xcode is complaining about  include.</p>

<p>I am a mac user, and the library is under </p>

<pre><code>/usr/local/boost_1_62_0
</code></pre>

<p>Under Build Setting, I added the path for Header Search Paths and User Header Search Paths. </p>

<p>In .cpp, I tried to use </p>

<pre><code>#include &lt;boost/asio.hpp&gt;
</code></pre>

<p>but it threw an error saying fix the  to "quote". Once I did that, it's complaing about the libary files themselves have to fix  to "quote", as attached picture shows. </p>

<p>Any suggestions??</p>

<p><a href="https://i.stack.imgur.com/1tSLv.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/1tSLv.png" alt="error message"></a></p>