jamespharvey20 [1] filed a deletion request for libibscif [2]: Upstream totally changed libibscif's dependencies (merging libibverbs into rdma-core, then subsequent changes within rdma-core) and completely broke libibscif. Asked upstream: "Is libibscif dead, and should OS repositories remove it?" Answer 1: "Libibscif is for an old product... no longer sold... libibscif is no longer maintained. It has already been removed..." Answer 2: "Yes". See mailing list thread here: https://marc.info/?l=linux-rdma&m=153962602724008&w=2 [1] https://aur.archlinux.org/account/jamespharvey20/ [2] https://aur.archlinux.org/pkgbase/libibscif/