Package: python-scipy Followup-For: Bug #914655 Digging a bit deeper, I think this bug may be impacted by the presence of /usr/lib/x86_64-linux-gnu/libopenblas.so provide by libopenblas-base
I think you will find your bug may be present in local builds of scipy, but the official Debian builds will be fine. Ultimately ilaver_ is a LAPACK symbol provided by liblapack.so. The offical Debian scipy builds use a generic BLAS/LAPACK implementation, so _flapack.x86_64-linux-gnu.so gets NEEDED liblapack.so.3 which can be fulfilled by any LAPACK implementation (provided via python-scipy Depends: liblapack3 | liblapack.so.3) But since libopenblas.so provides the same symbols as libblas.so and liblapack.so, if you make a local build with openblas installed then _flapack.x86_64-linux-gnu.so picks up NEEDED libopenblas.so.0 instead. But that does not get reflected in the python-scipy package dependencis, since they have been configured to allow for alternatives via libblas3 | libblas.so.3 and liblapack3 | liblapack.so.3. It means if you have a python-scipy built against openblas then it should run fine if libopenblas-base is installed. If you then install one of the other LAPACK alternatives instead of libopenblas-base (which you're supposed to be able to do), your locally built scipy will complain with the error given in this bug, becauses it will look for ilaver_ in libopenblas.so.0 which is no longer present. The /usr/lib/x86_64-linux-gnu/libopenblas.so seems to be the problem here, so I've filed Bug#929296 to ask about it. -- System Information: Debian Release: 10.0 APT prefers unstable APT policy: (500, 'unstable'), (1, 'experimental') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.19.0-5-amd64 (SMP w/4 CPU cores) Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8), LANGUAGE=en_AU.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages python-scipy depends on: ii libatlas3-base [liblapack.so.3] 3.10.3-8 ii libblas3 [libblas.so.3] 3.8.0-2 ii libc6 2.28-10 ii libgcc1 1:8.3.0-7 ii libgfortran5 8.3.0-7 ii liblapack3 [liblapack.so.3] 3.8.0-2 ii libopenblas-base [liblapack.so.3] 0.3.5+ds-3 ii libquadmath0 8.3.0-7 ii libstdc++6 8.3.0-7 ii python 2.7.16-1 ii python-decorator 4.3.0-1.1 ii python-numpy [python-numpy-abi9] 1:1.16.2-1 Versions of packages python-scipy recommends: ii g++ 4:8.3.0-1 ii g++-7 [c++-compiler] 7.4.0-9 ii g++-8 [c++-compiler] 8.3.0-7 ii python-dev 2.7.16-1 ii python-pil 5.4.1-2 Versions of packages python-scipy suggests: ii python-scipy-doc 1.1.0-7 -- no debconf information _______________________________________________ Python-modules-team mailing list Python-modules-team@alioth-lists.debian.net https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/python-modules-team
