I have never checked if my c compilers are deterministic, but Gentoo has tinderbox, and since everything that has an emake or whatever has a sha hash; this mean

I have never checked if my c compilers are deterministic, but Gentoo has tinderbox, and since everything that has an emake or whatever has a sha hash; this means if I use the exact same sha hashed source as the tinderbox binary, I should get a bitwise equal binary output myself. I of course imply all of the toolchain is using sha hash verified source output. In Gentoo `emerge -e <package name>` will do it, add binpkgs if you know what you're doing (I do, and I do).