Re: Package notes feature causing build paths to be embedded

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V Thu, Feb 03, 2022 at 08:56:20AM -0500, Simo Sorce napsal(a):
> On Thu, 2022-02-03 at 10:09 +0100, Florian Weimer wrote:
> > * Richard W. M. Jones:
> > 
> > > Thinking about this a bit more, the implementation of this feature
> > > simply seems to be wrong.  RPM already has a final stage where it
> > > strips ELF files and builds debuginfo.  Why wasn't the addition of
> > > package notes done there?
> > 
> > The package notes are in an allocatable section, to be mapped at run
> > time, so that they end up in core files.  As far as I know, it's not
> > reliably possible to add such data to an ELF file after the final
> > (non-relocatable) link.
> > 
> > We would have to pre-allocate some fixed space and fill it in later.
> > 
> > Cleaner approaches are possible if we teach the core dumper how to copy
> > select data from non-allocated sections.  I think we would then need
> > just a placeholder program header.
> 
> While it is nice to discuss future options, do we have a way to fix
> FTBFS's in rawhide _now_ ?
> 
You can disable embedding the package notes by undefining _package_note_file
macro in the package which builds in the linker flags. See
<https://src.fedoraproject.org/rpms/perl/c/4751b01e52fad1ef9c3012675791d979436ff8fe.patch>
for an example. Kudos to Jitka.

-- Petr

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