[Bug ld/16635] insert crc

[hjl.tools at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=16635

--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Maarten Brock from comment #2)
> Sorry for the late reply. I think I missed the previous one.
> 
> I was actually asking for a CRC, but an MD5 or SHA1 could do as well.
> 
> But what I miss is where I can find this ID in the binary image. Or how to
> get it there. I mean, if I use objcopy to create a .bin or .hex file, will
> the id be in there somewhere? I have the feeling --build-id only places the
> id in a descriptive section in the elf file.
> 

See spec for note.gnu.build-id section:

https://github.com/hjl-tools/linux-abi/wiki/Linux-Extensions-to-gABI

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