libunwind was in RHEL 7, but has been dropped for RHEL 8. Could you please build it for EPEL 8, for use by the scorep package, at least. The current rawhide version builds fine, scratch build in http://koji.fedoraproject.org/koji/taskinfo?taskID=37177646 while it lasts. Thanks.
FEDORA-EPEL-2019-c25ebc1512 has been submitted as an update to Fedora EPEL 8. https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2019-c25ebc1512
libunwind-1.3.1-3.el8 has been pushed to the Fedora EPEL 8 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2019-c25ebc1512
libunwind-1.3.1-3.el8 has been pushed to the Fedora EPEL 8 stable repository. If problems still persist, please make note of it in this bug report.