title: How to install memcache extension (php72, macos Catalina)
body: <p>I can't install memcache (not memcached) extension on MacOs Catalina, php 7.2</p>
  
  <pre><code>checking for the location of zlib... configure: error: memcache support requires ZLIB. Use --with-zlib-dir=&lt;DIR&gt; to specify prefix where ZLIB include and library are located
  ERROR: `/private/tmp/pear/temp/memcache/configure --with-php-config=/usr/local/opt/php@7.2/bin/php-config --enable-memcache-session=yes' failed
  </code></pre>
  
  <p>I try</p>
  
  <pre><code>pecl install memcache --with-zlib-dir=/usr/local/Cellar/zlib/1.2.11/include/zlib.h
  </code></pre>
  
  <p>But</p>
  
  <pre><code>Attempting to discover channel "--with-zlib-dir=/usr/local/Cellar/zlib/1.2.11/include"...
  Attempting fallback to https instead of http on channel "--with-zlib-dir=/usr/local/Cellar/zlib/1.2.11/include"...
  unknown channel "--with-zlib-dir=/usr/local/Cellar/zlib/1.2.11/include" in "--with-zlib-dir=/usr/local/Cellar/zlib/1.2.11/include/zlib.h"
  invalid package name/package file "--with-zlib-dir=/usr/local/Cellar/zlib/1.2.11/include/zlib.h"
  </code></pre>