On Friday, 13 April 2018 at 15:47, Germano Massullo wrote: > As darktable co-maintainer, today I was speaking with darix from > OpenSUSE community, which maintains such package on that distro. > On their OBS build system, they are able to build various packages each > one optimized for a single x86_64 CPU generation using @BUILD_FLAVOR@ + > _multibuild file.[1] So for example they have packages > darktable-broadwell > darktable-ivybridge > darktable-sandybridge > darktable-skylake > darktable-skylake-avx512 > > darix also said "that is an OBS feature, nothing that you can just copy > to koji[...]" > "there is no generic solution to this for a normal distro package". > > I would like to study a way to make darktable (sub)packages very > optimized for each CPU generation, so I am asking you if that is > possible on Fedora, and what I should study to achieve it. On Fedora 27+ (glibc 2.26+), you can use the standard way of building optimized libraries and putting them in platform and capability-specific directories, e.g.: /usr/lib64/haswell /usr/lib64/haswell/avx512_1 /usr/lib64/xeon_phi It's not the same as OBS does, but it's better than nothing. See this article for more information https://clearlinux.org/blogs/transparent-use-library-packages-optimized-intel-architecture Regards, Dominik -- Fedora https://getfedora.org | RPMFusion http://rpmfusion.org There should be a science of discontent. People need hard times and oppression to develop psychic muscles. -- from "Collected Sayings of Muad'Dib" by the Princess Irulan _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx
