Re: [HTCondor-devel] New ld option --build-id stores a hash in the elf header

[Tim Theisen <tim@xxxxxxxxxxx>]

It doesn't get passed all the way in. However, I think that the git hash
could be included in a file in the official source tarball. That way
even downstream distributions would have the git sha in their builds.

...Tim

On 6/1/21 9:14 AM, Greg Thain via HTCondor-devel wrote:
>
> All:
>
> Spending a relaxing weekend reading through linker documentation, I
> see that the gnu ld linker now has an option --build-id, which can
> take a hex string which represents a hash, and store it in the
> .gnu.notes.property section of the elf header. Newer versions of the
> "file" command display this hash. I would suggest that all of our
> builds try to set this to the git source sha, so we can have better
> tracking of our binaries. The nice thing about this is it isn't in
> the binary at all, not even in the text segment, so there are fewer
> "accidentally create a dependency that rebuilds the world" issues.
>
> Do we have the git hash handy when we do the rpm builds?
>
> -greg
>
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-- 
Tim Theisen
Release Manager
HTCondor & Open Science Grid
Center for High Throughput Computing
Department of Computer Sciences
University of Wisconsin - Madison
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