Source: openblas Version: 0.2.20+ds-1 Severity: wishlist Hi Sébastien >From Changelog.txt in OpenBLAS 0.2.20: IBM Z: * New target z13 with BLAS3 optimizations I have just checked, and openblas/0.2.20-3 builds successfully on zelenka.debian.org. Please enable building on s390x. Regards Graham