title: Ubuntu - Right protobuf paths for ./configure command
body: <p>I am following Google official documentation for GAE (Google app engine) installation.
  Look at this part (relative to gae php extension): <a href="https://github.com/GoogleCloudPlatform/appengine-php-extension" rel="nofollow">https://github.com/GoogleCloudPlatform/appengine-php-extension</a></p>
  
  <pre><code>./configure --enable-gae --with-protobuf_inc=&lt;include_path&gt; --with-protobuf_lib=&lt;lib_path&gt;
  </code></pre>
  
  <p>The documentation says:</p>
  
  <pre><code>Set &lt;include_path&gt; and &lt;lib_path&gt; to where you have installed the protobuf headers and libraries in the previous step.
  </code></pre>
  
  <p>I always get an error in the terminal when I run the ./configure command, because I don't know which are the right protobuf paths. </p>
  
  <p>P.s.<br>
  When installing Protobuf I followed this documentation:<br>
  <a href="https://github.com/google/protobuf/blob/master/src/README.md" rel="nofollow">https://github.com/google/protobuf/blob/master/src/README.md</a></p>
  
  <p>My <code>/home/Experiments</code> folder contains 3 folders:<br>
  <code>php-src</code>, <code>appengine-php-extension</code>, <code>protobuf</code>.<br>
  The <code>protobuf</code> folder is where I have "git cloned" protobuf to install it.</p>