Your message dated Mon, 13 Oct 2025 18:26:59 +0000
with message-id <[email protected]>
and subject line Bug#1054229: fixed in libcgns 4.5.0-1~exp3
has caused the Debian Bug report #1054229,
regarding libcgns-dev: please also ship src/cgns_f.F90 to support Fortran
compilers beyond gfortran
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
(NB: If you are a system administrator and have no idea what this
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--
1054229: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1054229
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: libcgns-dev
Version: 3.4.0-3
Severity: wishlist
Hello and thanks for maintaining this useful library in Debian!
The CGNS library may be used from C/C++ programs/libraries and also
from Fortran programs/libraries.
In order to use the library from Fortran code, the
use cgns
statement is required, which requires access to the 'cgns.mod' module
file, correctly shipped in package libcgns-dev as /usr/include/cgns.mod .
This works like a charm, as long you compile your own Fortran
program/library with the same Fortran compiler which was used to
generate the 'cgns.mod' module file.
But it may fail, when the two compilers are different, since,
unfortunately!, Fortran module files are [not portable] across
different compilers.
[not portable]: <https://fortranwiki.org/fortran/show/Library+distribution>
Obviously, the 'cgns.mod' module file shipped in package libcgns-dev as
/usr/include/cgns.mod was compiled with gfortran.
As a consequence, if you also compile your own Fortran program/library
with gfortran, there's no issue at all in using libcgns-dev.
But, if you want to support compilation of your own Fortran program/library
with more than one compiler (for instance gfortran and the Intel 'ifort'
Fortran compiler), you cannot use the official Debian package libcgns-dev.
Well, I seem to have found a strategy to work around this issue.
I downloaded the 'src/cgns_f.F90' source file (from the libcgns Debian
source package, same exact version as the installed Debian binary package)
and compiled it with the incompatible Fortran compiler (e.g.: the Intel
'ifort' Fortran compiler), thus obtaining a 'cgns.mod' module file
compatible with the used Fortran compiler. Among the options passed to
the compiler, there were the following:
-I/usr/include -c
Then I compiled my own Fortran program source files with the previously
obtained 'cgns.mod' module file in the same directory.
Again with:
-I/usr/include -c
among the compiler options.
Finally, I linked my own Fortran program .o object files together, with the
following:
-lcgns
among the passed options.
The strategy works and produces an executable, which is dynamically linked
(among other libraries) to the CGNS library:
$ ldd my_own_fortran_program | grep cgns
libcgns.so.3.4 => /lib/x86_64-linux-gnu/libcgns.so.3.4
(0x00007f3a4e9f3000)
The executable works correctly.
In conclusion, I would like to suggest to also ship the 'src/cgns_f.F90'
source file in package libcgns-dev, so that the CGNS library in Debian
becomes usable with Fortran compilers other than gfortran.
This would be highly useful, as it would increase the cross-compiler
compatibility of the CGNS library, as shipped in Debian!
And this would just require to ship one more file (less than 200 kbyte)
simply copied from the source Debian package to the libcgns-dev binary
Debian package.
Please consider accepting this proposal.
Thanks for your time and your dedication!
-- System Information:
Debian Release: trixie/sid
APT prefers testing
APT policy: (800, 'testing'), (500, 'unstable')
Architecture: amd64 (x86_64)
Kernel: Linux 6.5.0-1-amd64 (SMP w/4 CPU threads; PREEMPT)
Kernel taint flags: TAINT_FIRMWARE_WORKAROUND
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8),
LANGUAGE=en_US:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages libcgns-dev depends on:
ii libcgns3.4 3.4.0-3
libcgns-dev recommends no packages.
libcgns-dev suggests no packages.
-- no debconf information
--- End Message ---
--- Begin Message ---
Source: libcgns
Source-Version: 4.5.0-1~exp3
Done: Drew Parsons <[email protected]>
We believe that the bug you reported is fixed in the latest version of
libcgns, 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 [email protected],
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Drew Parsons <[email protected]> (supplier of updated libcgns 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 [email protected])
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
Format: 1.8
Date: Mon, 13 Oct 2025 18:08:53 +0200
Source: libcgns
Architecture: source
Version: 4.5.0-1~exp3
Distribution: experimental
Urgency: medium
Maintainer: Debian Science Team
<[email protected]>
Changed-By: Drew Parsons <[email protected]>
Closes: 1054229
Changes:
libcgns (4.5.0-1~exp3) experimental; urgency=medium
.
* Team upload.
* debian/rules: use DEB_HOST_GNU_TYPE not DEB_HOST_MULTIARCH to
access build dirs. See Debhelper perl scripts (Buildsystem.pm)
Needed to distinguish i686 from i386, else i386 fails tests.
* libcgns-dev provides cgns_f.F90 in /usr/src/cgns, to allow use with
other (non-GNU) Fortran compilers. Closes: #1054229.
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