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Date:      Thu, 08 Aug 2002 00:41:19 -0700
From:      Terry Lambert <tlambert2@mindspring.com>
To:        Colin Percival <Colin_Percival@sfu.ca>
Cc:        freebsd-hackers@freebsd.org
Subject:   Re: release variability
Message-ID:  <3D52209F.CC0B6DAA@mindspring.com>
References:  <5.0.2.1.1.20020808000218.01fcd120@popserver.sfu.ca>

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Colin Percival wrote:
>    If two people `make release` on different machines, how much difference
> will there be between the results?  Obviously the kernel will be different
> because it contains the user and host names from its build; should
> everything else be the same?

Assuming identical source trees, and that the build takes place
on systems installed with the same software, the only things that
should be different are user, host, and time stamps.  The kernel
is one place that's stamped; the boot code is another.

If you have ports installed on the host system, the tar balls
are copied into the build environment before the build occurs,
as well, so that could add an element of variablity.

If you need to have confidence in this, and don't, then you
can try it, and then NFS mount and diff -r the ISO images.

-- Terry

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