dpkg 1.22.6ubuntu11 enables ELF packaging metadata

[Michael Hudson-Doyle]

On Sat, 15 Jun 2024 at 10:46, Benjamin Drung <bdrung at ubuntu.com> wrote:

> Hi everyone,
>

Hi Benjamin,


> I just uploaded dpkg 1.22.6ubuntu11 to Ubuntu oracular. This version
> enables ELF packaging metadata via dpkg-buildflags by default. ELF
> objects will record the spec https://systemd.io/ELF_PACKAGE_METADATA/


So these changes break a few things, because they assume that if the
environment is affected by dpkg-buildflags, it is also affected by code
that is only part of running dpkg-buildpackage itself. There are a few ways
that this can go wrong:

1) running "./debian/rules binary" or whatever instead of dpkg-buildpackage
(which afaict is still the interface to package building that's dictated by
policy)
2) code like that in cargo-auto-test that sources dpkg-buildflags output to
get behaviour close to a package build without actually doing a package
build.

I don't know what the ideal change for this is. I guess the code in
add_build_flags could check that the DPKG_BUILDPACKAGE_* variables the spec
files need are defined before including the spec files in LDFLAGS?

Cheers,
mwh
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