To reproduce:

* Have a minimal Debian chroot or container
* apt install libgusb-dev
* pkg-config --cflags --libs gusb

Expected result: success, compiler flags are shown

Actual result:

I'll send the obvious patch when I have a bug number.

It's easy to reproduce this class of issues with an autopkgtest like
the one added by the attached patch, and running autopkgtest before upload
can detect and prevent these missing dependencies before they reach Debian.

    smcv

Control: tags -1 + patch

Attached, or available from
https://salsa.debian.org/efi-team/libgusb/-/merge_requests/6

    smcv

On Wed, 1 Mar 2023 11:06:21 +0000 Simon McVittie <smcv@debian.org> wrote:
 > Control: tags -1 + patch
 >
 > On Wed, 01 Mar 2023 at 10:52:44 +0000, Simon McVittie wrote:
 > > I'll send the obvious patch when I have a bug number.
 >
 > Attached, or available from

 > https://salsa.debian.org/efi-team/libgusb/-/merge_requests/6

Hello,

Independently of whether the package should migrate to testing/bookworm
now, could this bug be fixed?

I think the necessary patches are in git, is it possible to upload?

Kind regards,

Laurent Bigonville

We believe that the bug you reported is fixed in the latest version of
libgusb, which is due to be installed in the Debian FTP archive.

A summary of the changes between this version and the previous one is
attached.

Thank you for reporting the bug, which will now be closed.  If you
have further comments please address them to 1032183@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Jeremy Bicha <jbicha@ubuntu.com> (supplier of updated libgusb package)

(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
Format: 1.8
Date: Wed, 12 Apr 2023 10:16:00 -0400
Source: libgusb
Built-For-Profiles: noudeb
Architecture: source
Version: 0.4.5-1.1
Distribution: unstable
Urgency: medium
Maintainer: Debian UEFI Maintainers <debian-efi@lists.debian.org>
Changed-By: Jeremy Bicha <jbicha@ubuntu.com>
Closes: 1032183
Changes:
 libgusb (0.4.5-1.1) unstable; urgency=medium
 .
   * Non-maintainer upload
 .
   [ Simon McVittie ]
   * Add a superficial autopkgtest for libgusb-dev
   * d/control: Add missing dependency libgusb-dev -> libjson-glib-dev
     (Closes: #1032183)
 .
   [ Laurent Bigonville ]
   * Add missing debian/changelog entry
Checksums-Sha1:
 b2c13ba89ba14964dc5a2d1c8bfa6bb5e66892ec 2385 libgusb_0.4.5-1.1.dsc
 b5931831fbb93fda1cf5e12277a2a9dd224e594d 6908 libgusb_0.4.5-1.1.debian.tar.xz
 6930048177d5abb291ce00be1ec1a6718e198277 8907 libgusb_0.4.5-1.1_source.buildinfo
Checksums-Sha256:
 7050dff005eb8400e197adf46645753938be31a8d07a7b1a68573bfdef58dba9 2385 libgusb_0.4.5-1.1.dsc
 2bcd9f325f10ef7e4226de71596fb8925f0fdcd53a80dd5ed924ee6f9f53ec3a 6908 libgusb_0.4.5-1.1.debian.tar.xz
 5de9d48052a9c9b7552f13aa626830aac0365c6b4f99a4270b4837c814d89d6f 8907 libgusb_0.4.5-1.1_source.buildinfo
Files:
 680b0c0cc5908c0705f6b4ee39c42af3 2385 libs optional libgusb_0.4.5-1.1.dsc
 1a8a0033ec71a9e44bdfda0329ee96e2 6908 libs optional libgusb_0.4.5-1.1.debian.tar.xz
 de3672e87359b4574737fb77c703716b 8907 libs optional libgusb_0.4.5-1.1_source.buildinfo
-----BEGIN PGP SIGNATURE-----
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=dLLB
-----END PGP SIGNATURE-----