Package: libopenblas-base Version: 0.3.5+ds-3 Severity: normal This is more a Request For Clarification than a bug report.
Why is /usr/lib/x86_64-linux-gnu/libopenblasp-r0.3.5.so provided by libopenblas-base? We've got the alternatives mechanism for managing the different blas implementations, placing the various libblas.so and liblapack.so in the subdir /usr/lib/x86_64-linux-gnu/openblas and then providing alternatives links to /usr/lib/x86_64-linux-gnu/libblas.so and /usr/lib/x86_64-linux-gnu/liblapack.so But libopenblas-base also provides /usr/lib/x86_64-linux-gnu/libopenblas.so pointing at /usr/lib/x86_64-linux-gnu/libopenblasp-r0.3.5.so The problem is that libopenblasp-r0.3.5.so contains exactly the same symbols as libblas.so and liblapack.so. This seems to be confusing linkers, e.g. see Bug#914655 for python-scipy. If libopenblasp-r0.3.5.so is present then it is used preferentially to provide BLAS and LAPACK symbols, so the shared library (_flapack.x86_64-linux-gnu.so in the case of python-scipy) ends up with NEEDED libopenblas.so.0 instead of NEEDED liblapack.so.3 NEEDED libblas.so.3 The official builds of scipy are fine since they build against the generic BLAS. But local builds can become confused, which is what I think happened with Bug#914655. The package Depends: libblas3 | libblas.so.3 where in this case it would need Depends: libopenblas-base. So, is libopenblasp-r0.3.5.so really supposed to be provided in /usr/lib/x86_64-linux-gnu by libopenblas-base, or this a bug which should be fixed when the various BLAS flavours are being expanded? -- 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 libopenblas-base depends on: ii libc6 2.28-10 ii libgfortran5 8.3.0-7 libopenblas-base recommends no packages. libopenblas-base suggests no packages. -- no debconf information
