linux-kernel - Re: Building Debian from source spit out some warnings...please shed some light

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Message-ID: <20250703-offbeat-hound-of-tenacity-ceb047@l-nschier-aarch64>
Date: Thu, 3 Jul 2025 12:53:59 +0200
From: Nicolas Schier <nicolas.schier@...ux.dev>
To: Bhaskar Chowdhury <unixbhaskar@...il.com>
Cc: masahiroy@...nel.org, nathan@...nel.org, linux-kbuild@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: Building Debian from source spit out some warnings...please shed
 some light

On Sat, Jun 28, 2025 at 04:19:35AM +0530, Bhaskar Chowdhury wrote:
> 
> Alright, I was doing customary kernel building via upstream source and come
> across these warnings .....
> 
> dpkg-genbuildinfo --build=full -O../linux-upstream_6.15.4-00002-g4844502d6635-1_amd64.buildinfo
>  dpkg-genchanges --build=full -O../linux-upstream_6.15.4-00002-g4844502d6635-1_amd64.changes
> using Dpkg::Control::Fields::field_transfer_single() with an an implicit field argument is deprecated at /usr/bin/dpkg-genchanges line 245.
> using Dpkg::Control::Fields::field_transfer_single() with an an implicit field argument is deprecated at /usr/bin/dpkg-genchanges line 245.
[...]

I cannot reproduce the output you forwarded.  I tried it with this:

     sudo apt install build-essential git flex bison lsb-release debhelper bc \
        cpio kmod libdw-dev libelf-dev libssl-dev python3 rsync &&
     make defconfig deb-pkg -j28 -l28

and I am getting this:

    [...]
      HOSTCC  debian/linux-headers-6.15.4/usr/src/linux-headers-6.15.4/scripts/mod/symsearch.o
      HOSTCC  debian/linux-headers-6.15.4/usr/src/linux-headers-6.15.4/scripts/basic/fixdep
      HOSTCC  debian/linux-headers-6.15.4/usr/src/linux-headers-6.15.4/scripts/selinux/mdp/mdp
      HOSTLD  debian/linux-headers-6.15.4/usr/src/linux-headers-6.15.4/scripts/mod/modpost
    dpkg-deb: building package 'linux-headers-6.15.4' in '../linux-headers-6.15.4_6.15.4-2_amd64.deb'.
     dpkg-genbuildinfo --build=full -O../linux-upstream_6.15.4-2_amd64.buildinfo
     dpkg-genchanges --build=full -O../linux-upstream_6.15.4-2_amd64.changes
    dpkg-genchanges: info: including full source code in upload
     dpkg-source --compression=gzip --after-build .
    dpkg-source: info: using options from src.bookworm/debian/source/local-options: --diff-ignore --extend-dif
    f-ignore=.*
    dpkg-buildpackage: info: full upload (original source is included)

Thus, for me, everything works as expected.

Tested with v6.13+, v6.15.4 and v6.16-rc4 on an up-to-date and minimal Debian
bookworm and Debian unstable.

Which version of dpkg-dev do you have installed on your system?

Kind regards,
Nicolas

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