Для openSUSE Tumbleweed запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/home:megamaced/openSUSE_Tumbleweed/home:megamaced.repo
zypper refresh
zypper install libsmf
Для openSUSE Slowroll запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/home:megamaced/openSUSE_Slowroll/home:megamaced.repo
zypper refresh
zypper install libsmf
Для 15.6 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/home:megamaced/15.6/home:megamaced.repo
zypper refresh
zypper install libsmf
Для 15.5 запустите от имени root:
zypper addrepo https://download.opensuse.org/repositories/home:megamaced/15.5/home:megamaced.repo
zypper refresh
zypper install libsmf