Here is also a very interesting talk about reproducible builds and trusting compilers given at the Chaos Communication Congress: <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=5pAen7beYNc" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=5pAen7beYNc</a><p>They also talk about using multiple and very old compilers to bootstrap trust.