Bug#1044794: flintqs: Fails to build source after successful build

[Lucas Nussbaum]

Source: flintqs
Version: 1:1.0-4
Severity: minor
Tags: trixie sid ftbfs
User: lucas at debian.org
Usertags: ftbfs-sab-20230813 ftbfs-source-after-build
User: debian-qa at lists.debian.org
Usertags: qa-doublebuild

Hi,

This package fails to build a source package after a successful build
(dpkg-buildpackage ; dpkg-buildpackage -S).

This is probably a clear violation of Debian Policy section 4.9 (clean target),
but this is filed as severity:minor for now, because a discussion on
debian-devel showed that we might want to revisit the requirement of a working
'clean' target.

More information about this class of issues, included common problems and
solutions, is available at
https://wiki.debian.org/qa.debian.org/FTBFS/SourceAfterBuild

Relevant part of the build log:
> cd /<<PKGBUILDDIR>> && runuser -u user42 -- dpkg-buildpackage --sanitize-env -us -uc -rfakeroot -S
> -------------------------------------------------------------------------------------------------------------------
> 
> dpkg-buildpackage: info: source package flintqs
> dpkg-buildpackage: info: source version 1:1.0-4
> dpkg-buildpackage: info: source distribution unstable
> dpkg-buildpackage: info: source changed by Julien Puydt <jpuydt at debian.org>
>  dpkg-source --before-build .
>  fakeroot debian/rules clean
> dh clean
>    dh_auto_clean
> 	make -j8 distclean
> make[1]: Entering directory '/<<PKGBUILDDIR>>'
> Making distclean in src
> make[2]: Entering directory '/<<PKGBUILDDIR>>/src'
> test -z "QuadraticSieve" || rm -f QuadraticSieve
> rm -f *.o
> rm -f *.tab.c
> test -z "" || rm -f 
> rm -f config.h stamp-h1
> rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
> test . = "." || test -z "" || rm -f 
> rm -f ./.deps/F2matrix.Po
> rm -f ./.deps/ModuloArith.Po
> rm -f ./.deps/QS.Po
> rm -f ./.deps/TonelliShanks.Po
> rm -f ./.deps/lanczos.Po
> rm -f ./.deps/lprels.Po
> rm -f Makefile
> make[2]: Leaving directory '/<<PKGBUILDDIR>>/src'
> make[2]: Entering directory '/<<PKGBUILDDIR>>'
> test -z "" || rm -f 
> rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
> test . = "." || test -z "" || rm -f 
> rm -f cscope.out cscope.in.out cscope.po.out cscope.files
> make[2]: Leaving directory '/<<PKGBUILDDIR>>'
> rm -f config.status config.cache config.log configure.lineno config.status.lineno
> rm -f Makefile
> make[1]: Leaving directory '/<<PKGBUILDDIR>>'
>    dh_clean
>  dpkg-source -b .
> dpkg-source: info: using source format '3.0 (quilt)'
> dpkg-source: info: building flintqs using existing ./flintqs_1.0.orig.tar.gz
> dpkg-source: error: cannot represent change to config.sub:
> dpkg-source: error:   new version is symlink to /usr/share/automake-1.16/config.sub
> dpkg-source: error:   old version is nonexistent
> dpkg-source: error: cannot represent change to install-sh:
> dpkg-source: error:   new version is symlink to /usr/share/automake-1.16/install-sh
> dpkg-source: error:   old version is nonexistent
> dpkg-source: error: cannot represent change to config.guess:
> dpkg-source: error:   new version is symlink to /usr/share/automake-1.16/config.guess
> dpkg-source: error:   old version is nonexistent
> dpkg-source: error: cannot represent change to compile:
> dpkg-source: error:   new version is symlink to /usr/share/automake-1.16/compile
> dpkg-source: error:   old version is nonexistent
> dpkg-source: error: cannot represent change to depcomp:
> dpkg-source: error:   new version is symlink to /usr/share/automake-1.16/depcomp
> dpkg-source: error:   old version is nonexistent
> dpkg-source: error: cannot represent change to missing:
> dpkg-source: error:   new version is symlink to /usr/share/automake-1.16/missing
> dpkg-source: error:   old version is nonexistent
> dpkg-source: warning: executable mode 0755 of 'configure' will not be represented in diff
> dpkg-source: error: unrepresentable changes to source
> dpkg-buildpackage: error: dpkg-source -b . subprocess returned exit status 1
> 
> E: Command 'cd /<<PKGBUILDDIR>> && runuser -u user42 -- dpkg-buildpackage --sanitize-env -us -uc -rfakeroot -S' failed to run.


The full build log is available from:
http://qa-logs.debian.net/2023/08/13/flintqs_1.0-4_unstable.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

If you fail to reproduce this, please provide a build log and diff it with mine
so that we can identify if something relevant changed in the meantime.