scipy: BUG: undefined references to libmvec functions in some compiled modules

Describe your issue.

On arch linux with

$ python --version
Python 3.10.1
$ gcc --version
gcc (GCC) 11.1.0
$ gfortran --version
GNU Fortran (GCC) 11.1.0
$ pacman -Q openblas
openblas 0.3.19-1

I’m unable to build a working version of v1.7.3 because at least the scipy/linalg/_interpolative.so compiled module has undefined symbols. This appears to be because the various object files are compiled with enough optimisations that a mangled call to the vectorised GLIBC cosine function is emitted, but the link line that produces the module doesn’t link explicitly against libm.so and is therefore relying on transitive link dependencies to pull in libmvec.so (which on this system doesn’t happen).

The link line for _interpolative.so in the output from the build script is:

INFO: gcc -pthread -shared -Wl,-O1,--sort-common,--as-needed,-z,relro,-z,now -Wl,-O1,--sort-common,--as-needed,-z,relro,-z,now build/temp.linux-x86_64-3.10/build/src.linux-x86_64-3.10/scipy/linalg/_interpolativemodule.o build/temp.linux-x86_64-3.10/build/src.linux-x86_64-3.10/build/src.linux-x86_64-3.10/scipy/linalg/fortranobject.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/dfft.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/id_rand.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/id_rtrans.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/idd_frm.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/idd_house.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/idd_id.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/idd_id2svd.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/idd_qrpiv.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/idd_sfft.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/idd_snorm.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/idd_svd.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/iddp_aid.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/iddp_asvd.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/iddp_rid.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/iddp_rsvd.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/iddr_aid.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/iddr_asvd.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/iddr_rid.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/iddr_rsvd.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/idz_frm.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/idz_house.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/idz_id.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/idz_id2svd.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/idz_qrpiv.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/idz_sfft.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/idz_snorm.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/idz_svd.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/idzp_aid.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/idzp_asvd.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/idzp_rid.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/idzp_rsvd.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/idzr_aid.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/idzr_asvd.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/idzr_rid.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/idzr_rsvd.o build/temp.linux-x86_64-3.10/scipy/linalg/src/id_dist/src/prini.o -L/usr/lib64 -L/usr/lib -Lbuild/temp.linux-x86_64-3.10 -lopenblas -llapack -lopenblas -llapack -o build/lib.linux-x86_64-3.10/scipy/linalg/_interpolative.cpython-310-x86_64-linux-gnu.so -Wl,--version-script=build/temp.linux-x86_64-3.10/link-version-scipy.linalg._interpolative.map

I think the right fix is to add -lm to the link lines, but I have no idea how to do so.

Reproducing Code Example

# Get a build environment up [I can provide exact details if necessary]
# Then approximately this
git clone https://github.com/scipy/scipy.git
cd scipy
git checkout v1.7.3
git submodule update --init
python3 -m venv foo
. foo/bin/activate
pip install numpy Cython pythran pybind11
python3 setup.py build
[... wait]
cd build/lib.linux-x86_64-3.10/scipy/linalg
python3 -c "import _interpolative"

Error message

Traceback (most recent call last):
  File "<string>", line 1, in <module>
ImportError: .../scipy/build/lib.linux-x86_64-3.10/scipy/linalg/_interpolative.cpython-310-x86_64-linux-gnu.so: undefined symbol: _ZGVbN2v_cos

SciPy/NumPy/Python version information

scipy: 1.7.3, numpy: 1.22.0, Python:3.10.1