Bug#1114618: FTBFS against Octave 10

[Rafael Laboissière]

* Sébastien Villemot <sebastien at debian.org> [2025-09-07 18:44]:

> Source: vlfeat
> Version: 0.9.21+full-2.1
> Severity: important
> Tags: ftbfs sid forky
> X-Debbugs-Cc: debian-octave at lists.debian.org
> User: debian-octave at lists.debian.org
> Usertags: octave-10
>
> Dear Maintainer,
>
> vlfeat FTBFS against octave 10 (which currently stands in experimental).
>
> A build log is attached.

There are loads of error messages like the following one:

dpkg-shlibdeps: error: cannot find library liboctmex.so.1 needed by debian/octave-vlfeat/usr/lib/x86_64-linux-gnu/octave/site/oct/x86_64-pc-linux-gnu/vlfeat/toolbox/vl_twister.mex (ELF format: 'elf64-x86-64' abi: 'ELF:64:l:amd64:0'; RPATH: '')

This is strange, because "-L/usr/lib/x86_64-linux-gnu/octave/10.2.0 
-loctmex" is passed to g++ when the .mex files are compiled through 
mkoctfile, like in the following example:

  CFLAGS="-g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/vlfeat-0.9.21+full=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -g -Wdate-time -D_FORTIFY_SOURCE=2 -std=c99 -Wall -Wextra -Wno-unused-function -Wno-long-long -Wno-variadic-macros  -DNDEBUG -O3  -D_GNU_SOURCE -fno-stack-protector" \
  LDFLAGS="-Wl,-z,relro -Wl,-z,now -Wl,--as-needed -lpthread -lm" \
  /usr/bin/mkoctfile \
     --mex -v \
     --output "toolbox/mex/octave/mexglx/vl_slic.mex" \
       -DVL_DISABLE_SSE2 -DVL_DISABLE_AVX -I. -Itoolbox -I. "./toolbox/slic/vl_slic.c" \
     -Lbin/debian -lvl -lm
  gcc -c -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -I/usr/include/octave-10.2.0/octave/.. -I/usr/include/octave-10.2.0/octave  -pthread -fopenmp -fexceptions -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/vlfeat-0.9.21+full=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -g -Wdate-time -D_FORTIFY_SOURCE=2 -std=c99 -Wall -Wextra -Wno-unused-function -Wno-long-long -Wno-variadic-macros  -DNDEBUG -O3  -D_GNU_SOURCE -fno-stack-protector   -I. -I. -Itoolbox -I.  -DVL_DISABLE_SSE2 -DVL_DISABLE_AVX -DMEX_DEBUG ./toolbox/slic/vl_slic.c -o /tmp/oct-7QRLV6.o
  gcc -c -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -I/usr/include/octave-10.2.0/octave/.. -I/usr/include/octave-10.2.0/octave  -pthread -fopenmp -fexceptions -g -O2 -Werror=implicit-function-declaration -ffile-prefix-map=/build/reproducible-path/vlfeat-0.9.21+full=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection -g -Wdate-time -D_FORTIFY_SOURCE=2 -std=c99 -Wall -Wextra -Wno-unused-function -Wno-long-long -Wno-variadic-macros  -DNDEBUG -O3  -D_GNU_SOURCE -fno-stack-protector   -I. -I. -Itoolbox -I.  -DVL_DISABLE_SSE2 -DVL_DISABLE_AVX -DMEX_DEBUG /tmp/oct-kEsu4D.c -o /tmp/oct-uNoD3P.o
  g++ -I/usr/include/octave-10.2.0/octave/.. -I/usr/include/octave-10.2.0/octave  -pthread -fopenmp -g -O2 -ffile-prefix-map=/build/reproducible-path/vlfeat-0.9.21+full=. -fstack-protector-strong -fstack-clash-protection -Wformat -Werror=format-security -fcf-protection  -o toolbox/mex/octave/mexglx/vl_slic.mex  /tmp/oct-7QRLV6.o /tmp/oct-uNoD3P.o   -Lbin/debian -lvl -lm -shared -Wl,-Bsymbolic -Wl,-z,relro -Wl,-z,now -Wl,--as-needed -lpthread -lm  -L/usr/lib/x86_64-linux-gnu/octave/10.2.0 -loctmex -flto=auto -ffat-lto-objects -Wl,-z,relro

Any ideas?

Best,

Rafael Laboissière