Bug#1066316: siconos: FTBFS: lcp_nsqp.c:139:3: error: implicit declaration of function =?UTF-8?Q?=E2=80=98numerics=5Ferror=E2=80=99; ?= did you mean ‘numerics_EXPORTS’? [-Werror=implicit-function-declaration]

[Lucas Nussbaum]

Source: siconos
Version: 4.4.0+dfsg-4
Severity: serious
Justification: FTBFS
Tags: trixie sid ftbfs
User: lucas at debian.org
Usertags: ftbfs-20240313 ftbfs-trixie ftbfs-impfuncdef

Hi,

During a rebuild of all packages in sid, your package failed to build
on amd64.

This is most likely caused by a change in dpkg 1.22.6, that enabled
-Werror=implicit-function-declaration. For more information, see
https://wiki.debian.org/qa.debian.org/FTBFS#A2024-03-13_-Werror.3Dimplicit-function-declaration

Relevant part (hopefully):
> cd /<<PKGBUILDDIR>>/obj-x86_64-linux-gnu/numerics && /usr/bin/cc -Dnumerics_EXPORTS -I/<<PKGBUILDDIR>>/obj-x86_64-linux-gnu -I/<<PKGBUILDDIR>>/numerics/src/. -I/<<PKGBUILDDIR>>/numerics/src/tools -I/<<PKGBUILDDIR>>/numerics/src/tools/InterfaceToPathFerris -I/<<PKGBUILDDIR>>/numerics/src/tools/internal -I/<<PKGBUILDDIR>>/numerics/src/AVI -I/<<PKGBUILDDIR>>/numerics/src/LCP -I/<<PKGBUILDDIR>>/numerics/src/MLCP -I/<<PKGBUILDDIR>>/numerics/src/SOCP -I/<<PKGBUILDDIR>>/numerics/src/QP -I/<<PKGBUILDDIR>>/numerics/src/Relay -I/<<PKGBUILDDIR>>/numerics/src/FrictionContact -I/<<PKGBUILDDIR>>/numerics/src/FrictionContact/Generated -I/<<PKGBUILDDIR>>/numerics/src/NCP -I/<<PKGBUILDDIR>>/numerics/src/MCP -I/<<PKGBUILDDIR>>/numerics/src/GenericMechanical -I/<<PKGBUILDDIR>>/numerics/src/VI -I/<<PKGBUILDDIR>>/externals/blas_lapack -I/<<PKGBUILDDIR>>/externals/netlib -I/<<PKGBUILDDIR>>/externals/netlib/odepack -I/<<PKGBUILDDIR>>/externals/tools -I/<<PKGBUILDDIR>>/externals/SOL/lumod-c -I/<<PKGBUILDDIR>>/externals/hairer -I/<<PKGBUILDDIR>>/externals/numeric_bindings -I/<<PKGBUILDDIR>>/externals/boost_contribs -I/<<PKGBUILDDIR>>/externals/sort -isystem /usr/include/suitesparse -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -ftemplate-depth=1024 -MD -MT numerics/CMakeFiles/numerics.dir/src/LCP/lcp_nsqp.c.o -MF CMakeFiles/numerics.dir/src/LCP/lcp_nsqp.c.o.d -o CMakeFiles/numerics.dir/src/LCP/lcp_nsqp.c.o -c /<<PKGBUILDDIR>>/numerics/src/LCP/lcp_nsqp.c
> cc1: warning: command-line option ‘-ftemplate-depth=1024’ is valid for C++/ObjC++ but not for C
> /<<PKGBUILDDIR>>/numerics/src/LCP/lcp_nsqp.c: In function ‘lcp_nsqp’:
> /<<PKGBUILDDIR>>/numerics/src/LCP/lcp_nsqp.c:139:3: error: implicit declaration of function ‘numerics_error’; did you mean ‘numerics_EXPORTS’? [-Werror=implicit-function-declaration]
>   139 |   numerics_error("lcp_qp","ql0001 is not available in siconos numerics");
>       |   ^~~~~~~~~~~~~~
>       |   numerics_EXPORTS
> cc1: some warnings being treated as errors
> make[3]: *** [numerics/CMakeFiles/numerics.dir/build.make:1101: numerics/CMakeFiles/numerics.dir/src/LCP/lcp_nsqp.c.o] Error 1


The full build log is available from:
http://qa-logs.debian.net/2024/03/13/siconos_4.4.0+dfsg-4_unstable.log

All bugs filed during this archive rebuild are listed at:
https://bugs.debian.org/cgi-bin/pkgreport.cgi?tag=ftbfs-20240313;users=lucas@debian.org
or:
https://udd.debian.org/bugs/?release=na&merged=ign&fnewerval=7&flastmodval=7&fusertag=only&fusertagtag=ftbfs-20240313&fusertaguser=lucas@debian.org&allbugs=1&cseverity=1&ctags=1&caffected=1#results

A list of current common problems and possible solutions is available at
http://wiki.debian.org/qa.debian.org/FTBFS . You're welcome to contribute!

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.