Bug#980710: mpi4py: FTBFS: ld: cannot find -llmpe

[Lucas Nussbaum]

Source: mpi4py
Version: 3.0.3-7
Severity: serious
Justification: FTBFS on amd64
Tags: bullseye sid ftbfs
Usertags: ftbfs-20210120 ftbfs-bullseye

Hi,

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

Relevant part (hopefully):
> make[1]: Entering directory '/<<PKGBUILDDIR>>'
> dh_auto_build override_dh_auto_build-arch -- \
> 	--build-args "--mpicc=/usr/bin/mpicc --mpicxx=/usr/bin/mpicxx"
> I: pybuild base:232: /usr/bin/python3 setup.py build --mpicc=/usr/bin/mpicc --mpicxx=/usr/bin/mpicxx
> running build
> running build_src
> running build_py
> creating /<<PKGBUILDDIR>>/.pybuild/cpython3_3.9/build/mpi4py
> copying src/mpi4py/bench.py -> /<<PKGBUILDDIR>>/.pybuild/cpython3_3.9/build/mpi4py
> copying src/mpi4py/__init__.py -> /<<PKGBUILDDIR>>/.pybuild/cpython3_3.9/build/mpi4py
> copying src/mpi4py/__main__.py -> /<<PKGBUILDDIR>>/.pybuild/cpython3_3.9/build/mpi4py
> copying src/mpi4py/run.py -> /<<PKGBUILDDIR>>/.pybuild/cpython3_3.9/build/mpi4py
> creating /<<PKGBUILDDIR>>/.pybuild/cpython3_3.9/build/mpi4py/futures
> copying src/mpi4py/futures/__init__.py -> /<<PKGBUILDDIR>>/.pybuild/cpython3_3.9/build/mpi4py/futures
> copying src/mpi4py/futures/__main__.py -> /<<PKGBUILDDIR>>/.pybuild/cpython3_3.9/build/mpi4py/futures
> copying src/mpi4py/futures/_base.py -> /<<PKGBUILDDIR>>/.pybuild/cpython3_3.9/build/mpi4py/futures
> copying src/mpi4py/futures/pool.py -> /<<PKGBUILDDIR>>/.pybuild/cpython3_3.9/build/mpi4py/futures
> copying src/mpi4py/futures/aplus.py -> /<<PKGBUILDDIR>>/.pybuild/cpython3_3.9/build/mpi4py/futures
> copying src/mpi4py/futures/_lib.py -> /<<PKGBUILDDIR>>/.pybuild/cpython3_3.9/build/mpi4py/futures
> copying src/mpi4py/futures/server.py -> /<<PKGBUILDDIR>>/.pybuild/cpython3_3.9/build/mpi4py/futures
> copying src/mpi4py/libmpi.pxd -> /<<PKGBUILDDIR>>/.pybuild/cpython3_3.9/build/mpi4py
> copying src/mpi4py/__init__.pxd -> /<<PKGBUILDDIR>>/.pybuild/cpython3_3.9/build/mpi4py
> copying src/mpi4py/MPI.pxd -> /<<PKGBUILDDIR>>/.pybuild/cpython3_3.9/build/mpi4py
> creating /<<PKGBUILDDIR>>/.pybuild/cpython3_3.9/build/mpi4py/include
> creating /<<PKGBUILDDIR>>/.pybuild/cpython3_3.9/build/mpi4py/include/mpi4py
> copying src/mpi4py/include/mpi4py/mpi4py.h -> /<<PKGBUILDDIR>>/.pybuild/cpython3_3.9/build/mpi4py/include/mpi4py
> copying src/mpi4py/include/mpi4py/mpi4py.MPI_api.h -> /<<PKGBUILDDIR>>/.pybuild/cpython3_3.9/build/mpi4py/include/mpi4py
> copying src/mpi4py/include/mpi4py/mpi4py.MPI.h -> /<<PKGBUILDDIR>>/.pybuild/cpython3_3.9/build/mpi4py/include/mpi4py
> copying src/mpi4py/include/mpi4py/mpi4py.i -> /<<PKGBUILDDIR>>/.pybuild/cpython3_3.9/build/mpi4py/include/mpi4py
> copying src/mpi4py/include/mpi4py/mpi.pxi -> /<<PKGBUILDDIR>>/.pybuild/cpython3_3.9/build/mpi4py/include/mpi4py
> running build_clib
> MPI configuration: [mpi] from 'mpi.cfg'
> MPI C compiler:    /usr/bin/mpicc
> MPI C++ compiler:  /usr/bin/mpicxx
> checking for library 'lmpe' ...
> /usr/bin/mpicc -pthread -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O2 -Wall -g -fstack-protector-strong -Wformat -Werror=format-security -g -fwrapv -O2 -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -c _configtest.c -o _configtest.o
> /usr/bin/mpicc -pthread -Wl,-z,relro -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 _configtest.o -llmpe -o _configtest
> /usr/bin/ld: cannot find -llmpe
> collect2: error: ld returned 1 exit status

The full build log is available from:
   http://qa-logs.debian.net/2021/01/20/mpi4py_3.0.3-7_unstable.log

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 marking 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 me
so that we can identify if something relevant changed in the meantime.

About the archive rebuild: The rebuild was done on EC2 VM instances from
Amazon Web Services, using a clean, minimal and up-to-date chroot. Every
failed build was retried once to eliminate random failures.