Brew install node --without-npm fails
<p>Following <a href="http://www.johnpapa.net/how-to-use-npm-global-without-sudo-on-osx/" rel="noreferrer">John Papa's post on 'How to use npm global without sudo on OSX'</a> and I am running </p>

<pre><code>brew install node --without-npm
</code></pre>

<p>I get this info/error(s):</p>

<pre><code>/usr/local &gt; brew install node --without-npm
==&gt; Downloading https://nodejs.org/dist/v5.10.1/node-v5.10.1.tar.xz
Already downloaded: /Library/Caches/Homebrew/node-5.10.1.tar.xz
==&gt; Downloading https://ssl.icu-project.org/files/icu4c/56.1/icu4c-56_1-src.tgz
Already downloaded: /Library/Caches/Homebrew/node--icu4c-56.1.tgz
==&gt; ./configure --prefix=/usr/local/Cellar/node/5.10.1 --without-npm --with-intl
==&gt; make install
Last 15 lines from /Users/justin/Library/Logs/Homebrew/node/02.make:
#include &lt;limits&gt;
         ^
In file included from ../deps/gtest/src/gtest-death-test.cc:34:
In file included from ../deps/gtest/include/gtest/gtest-death-test.h:41:
In file included from ../deps/gtest/include/gtest/internal/gtest-death-test-internal.h:40:
In file included from ../deps/gtest/include/gtest/internal/gtest-internal.h:40:
../deps/gtest/include/gtest/internal/gtest-port.h:259:10: fatal error: 'ctype.h' file not found
#include &lt;ctype.h&gt;   // for isspace, etc
         ^
1 error generated.
make[1]: *** [/private/tmp/node20160410-11435-157r8bn/node-v5.10.1/out/Release/obj.target/gtest/deps/gtest/src/gtest-filepath.o] Error 1
make[1]: *** Waiting for unfinished jobs....
1 error generated.
make[1]: *** [/private/tmp/node20160410-11435-157r8bn/node-v5.10.1/out/Release/obj.target/gtest/deps/gtest/src/gtest-death-test.o] Error 1
make: *** [node] Error 2
</code></pre>

<p>Following <a href="https://github.com/Homebrew/brew/blob/master/share/doc/homebrew/Troubleshooting.md#troubleshooting" rel="noreferrer">Homebrew's troubleshooting instructions</a>, I ran <code>brew update</code> twice and <code>brew doctor</code> -- but still no luck. I'm not familiar with homebrew and haven't messed with this stuff in a while. Any ideas what these errors mean? </p>