[Debian-astro-maintainers] Bug#1105528: mocassin: FTBFS with make --shuffle=reverse: Fatal Error: Cannot open module file ‘common_mod.mod’ for reading at (1): No such file or directory

[Lucas Nussbaum]

Source: mocassin
Version: 2.02.73.2-1
Severity: minor
Tags: trixie sid ftbfs
User: lucas at debian.org
Usertags: ftbfs-shuffle

Hi,

GNU Make now has a --shuffle option that simulates non-deterministic ordering
of target prerequisites. See
https://trofi.github.io/posts/238-new-make-shuffle-mode.html and also previous
work in Debian by Santiago Vila:
https://people.debian.org/~sanvila/make-shuffle/

This package fails to build with make --shuffle=reverse.
This is likely to be caused by a missing dependency in
debian/rules or an upstream Makefile.

More information about this mass bug filing is available at
https://wiki.debian.org/qa.debian.org/FTBFS/Shuffle

Relevant part (hopefully):
> make[1]: Entering directory '/build/reproducible-path/mocassin-2.02.73.2'
> Makefile:63: update target 'source/mocassinPlot.o' due to: target does not exist
> mpif90 -g -O2 -ffile-prefix-map=/build/reproducible-path/mocassin-2.02.73.2=. -fstack-protector-strong -fstack-clash-protection -fcf-protection -cpp -Jsource/ -ffree-line-length-0 -lm -DPREFIX=\"/usr\" -DVERSION=\"2.02.73.2-1\" -I/usr/local/include -O2 source/mocassinPlot.f90 -c -o source/mocassinPlot.o
> source/mocassinPlot.f90:8:9:
> 
>     8 |     use common_mod
>       |         1
> Fatal Error: Cannot open module file ‘common_mod.mod’ for reading at (1): No such file or directory
> compilation terminated.
> make[1]: *** [Makefile:63: source/mocassinPlot.o] Error 1 shuffle=reverse


The full build log is available from:
http://qa-logs.debian.net/2025/05/05/shuffle/reverse/mocassin_2.02.73.2-1_unstable_reverse.log

If you reassign this bug to another package, please mark it as 'affects'-ing
this package. See https://www.debian.org/Bugs/server-control#affects