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Date: Thu, 26 Sep 2013 18:51:56 -0700
From: Paul Pluzhnikov <>
CC: Alexander Cherepanov <>
Subject: Re: Reproducible Builds for Fedora

On 9/26/13 6:36 PM, Alexander Cherepanov wrote:

> The choice is simple -- produce byte-for-byte identical builds. Both Tor
> and Debian aim at it.

FWIW, when we build compilers (and then all other binaries) at Google, 
we don't just aim for, but actually achieve bit-identical rebuilds.

New GCC releases often break this, but a few patches later the 
capability is restored. Latest example:

The ability to do bit-identical rebuild is critical to our build system 
and in particular the high cache hit rates it achieves.

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