what does --enable-optimizations do while compiling python?
<p>I'm trying to compile Python 3.6 on an arm based Linux machine, 
<code>./configure</code> outputs this:</p>

<blockquote>
  <p>If you want a release build with all optimizations active (LTO, PGO, etc),
  please run <code>./configure --enable-optimizations</code>.</p>
</blockquote>

<p>what does <code>--enable-optimizations</code> do?</p>