Rails - Can't install RMagick 2.16.0. Can't find MagickWand.h : <p>I appreciate this question has been asked many times before, however I've tried all available answers to no avail. The error log is as follows:</p>

<pre><code>have_header: checking for wand/MagickWand.h... -------------------- no

"gcc -E -I/Users/mark/.rvm/rubies/ruby-2.3.3/include/ruby-2.3.0/x86_64-darwin16 -I/Users/mark/.rvm/rubies/ruby-2.3.3/include/ruby-2.3.0/ruby/backward -I/Users/mark/.rvm/rubies/ruby-2.3.3/include/ruby-2.3.0 -I.  -DMAGICKCORE_HDRI_ENABLE=1 -DMAGICKCORE_QUANTUM_DEPTH=16 -DMAGICKCORE_HDRI_ENABLE=1 -DMAGICKCORE_QUANTUM_DEPTH=16 -I/usr/local/Cellar/imagemagick/7.0.4-8/include/ImageMagick-7  -DMAGICKCORE_HDRI_ENABLE=1 -DMAGICKCORE_QUANTUM_DEPTH=16 -DMAGICKCORE_HDRI_ENABLE=1 -DMAGICKCORE_QUANTUM_DEPTH=16 -I/usr/local/Cellar/imagemagick/7.0.4-8/include/ImageMagick-7  conftest.c -o conftest.i"
conftest.c:3:10: fatal error: 'wand/MagickWand.h' file not found
#include &lt;wand/MagickWand.h&gt;
     ^
1 error generated.
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: #include &lt;wand/MagickWand.h&gt;
/* end */
</code></pre>

<p>After running mdfind MagickWand.h I can see the path is:</p>

<pre><code>/usr/local/Cellar/imagemagick/7.0.4-8/include/ImageMagick-7/MagickWand/MagickWand.h
</code></pre>

<p>I then run:</p>

<pre><code>C_INCLUDE_PATH=/usr/local/Cellar/imagemagick/7.0.4-8/include/ImageMagick-7/MagickWand/ gem install rmagick
</code></pre>

<p>However get the same message as before. </p>

<p>Any help for how to get this solved is greatly appreciated.</p>
