No builds are not easy to reproduce bit by bit as there are much more factors as the actual source.<p>For example:<p><pre><code>  - compiler version used
  - date &#x2F; timestamps at the time of compile
  - build id&#x27;s
</code></pre>
A good article on this can be found here:
<a href="https:&#x2F;&#x2F;blogs.kde.org&#x2F;2013&#x2F;06&#x2F;19&#x2F;really-source-code-software" rel="nofollow">https:&#x2F;&#x2F;blogs.kde.org&#x2F;2013&#x2F;06&#x2F;19&#x2F;really-source-code-software</a>