title: 'unicode/ubrk.h' file not found on mac osx big sur
body: <p>I am trying to install php 7.4 intl extension using the commands:</p>
  <ul>
  <li>/Applications/XAMPP/bin/phpize</li>
  <li>./configure</li>
  <li>make</li>
  </ul>
  <p>then I get the error:</p>
  <pre><code>./php_intl.h:31:10: fatal error: 'unicode/ubrk.h' file not found
  </code></pre>