scripts: Add support for .buildinfo files

The .buildinfo files are a new type of control files, similar to
the .changes files, meant to describe the environment of a build
and its artifacts. They are meant to be added to the Debian archive
to allow independent parties to reproduce a build and verify the
result.

Specifications for .buildinfo are available at:
<https://wiki.debian.org/ReproducibleBuilds/BuildinfoSpecification>

This patch adds support for .buildinfo files in Dpkg::Control,
adds new .buildinfo fields to Dpkg::Control::Fields, a new
builtin-system-build-paths Dpkg::Vendor hook, and adds a new script
named dpkg-genbuildinfo, that will now be called by dpkg-buildpackage
before generating the .changes file.

[ntyni@debian.org: small changes. ]

Closes: #138409
Based-on-patch-by: Jérémy Bobbio <lunar@debian.org>
Signed-off-by: Guillem Jover <guillem@debian.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/scripts/Dpkg/Vendor/Debian.pm b/scripts/Dpkg/Vendor/Debian.pm
index 560db2de8..bbba00d52 100644
--- a/scripts/Dpkg/Vendor/Debian.pm
+++ b/scripts/Dpkg/Vendor/Debian.pm
@@ -83,6 +83,8 @@ sub run_hook {
 	$self->_add_reproducible_flags(@params);
 	$self->_add_sanitize_flags(@params);
 	$self->_add_hardening_flags(@params);
+    } elsif ($hook eq 'builtin-system-build-paths') {
+        return qw(/build/);
     } else {
         return $self->SUPER::run_hook($hook, @params);
     }