libhdf4 build-depends on legacy GCC 14, which is unlikely to be shipped
with the next Debian release. Please check to build with GCC 15, and/or
test with GCC 16 (currently experimental only).

Control: tags -1 help

The arm porters never responded to that bugreport, so I did what I could to make the package build successfully on armhf.

Please help fix this issue to make the default compiler work on all architectures.

Kind Regards,

Bas

  cpp-16 : Depends: gcc-16-base (= 16-20260226-1) but it is not going to be installed
           Depends: cpp-16-arm-linux-gnueabihf (= 16-20260226-1) but it is not going to be installed
  g++-16 : Depends: g++-16-arm-linux-gnueabihf (= 16-20260226-1) but it is not going to be installed
           Depends: gcc-16-base (= 16-20260226-1) but it is not going to be installed
  gcc-16 : Depends: gcc-16-arm-linux-gnueabihf (= 16-20260226-1) but it is not going to be installed
           Depends: gcc-16-base (= 16-20260226-1) but it is not going to be installed
E: Unable to satisfy dependencies. Reached two conflicting assignments:
    1. gcc-16:armhf=16-20260226-1 is selected for install
    2. gcc-16:armhf Depends gcc-16-arm-linux-gnueabihf (= 16-20260226-1)
       but none of the choices are installable:
       - gcc-16-arm-linux-gnueabihf:armhf Depends libcc1-0 (>= 16-20260226-1)
         but none of the choices are installable:
         - libcc1-0:armhf=16-20260226-1 is not selected for install

Kind Regards,

Bas

This is now fixed in git thanks to Emanuele Rocca.

Kind Regards,

Bas

Hi Bas,

Can you please upload the fix?

Cheers,
Emilio

If you really need it now. I generally hold of on uploads until the next upstream release, to fix an RC issue, or shortly before the freeze.

Kind Regards,

Bas

Control: severity -1 serious

Not really needed, as GCC 14 won't be dropped from testing just yet. Anyway it'd
be nice to reduce the number of rdeps, and separating the upload from a new
upstream release means if there's any issues it's easier to pinpoint the cause.
But I'd leave it up to you.

I'm bumping the severity to serious as this is technically a release blocker for
the removal of GCC 14, just so that we have it on our radar, and since I'm
filing other GCC 14 bugs as RC.

Cheers,
Emilio

We believe that the bug you reported is fixed in the latest version of
libhdf4, 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 1129510@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.

Debian distribution maintenance software
pp.
Bas Couwenberg <sebastic@debian.org> (supplier of updated libhdf4 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: Tue, 28 Jul 2026 13:03:33 +0200
Source: libhdf4
Architecture: source
Version: 4.3.1-3
Distribution: unstable
Urgency: medium
Maintainer: Debian GIS Project <pkg-grass-devel@lists.alioth.debian.org>
Changed-By: Bas Couwenberg <sebastic@debian.org>
Closes: 1121629 1129510
Changes:
 libhdf4 (4.3.1-3) unstable; urgency=medium
 .
   * Team upload.
 .
   [ Helmut Grohne ]
   * Improve cross building. (Closes: #1121629)
     + Fix build vs host confusion.
     + Always export CC and CXX as the upstream build system wrongly guesses it.
 .
   [ Bas Couwenberg ]
   * Drop Priority: optional, default since dpkg 1.22.13.
   * Bump Standards-Version to 4.7.4, changes: priority.
   * Use -std=c17 on armhf to fix FTBFS with GCC 15.
     Thanks to Emanuele Rocca.
     (closes: #1129510)
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