Para openSUSE Leap 15.6 corra o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/devel:languages:misc/openSUSE_Leap_15.6/devel:languages:misc.repo
zypper refresh
zypper install tokyocabinet
Para SLE 15 SP4 corra o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/devel:languages:misc/SLE_15_SP4/devel:languages:misc.repo
zypper refresh
zypper install tokyocabinet
Para SLE 15 SP1 corra o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/devel:languages:misc/SLE_15_SP1/devel:languages:misc.repo
zypper refresh
zypper install tokyocabinet
Para SLE 12 SP5 corra o seguinte como root:
zypper addrepo https://download.opensuse.org/repositories/devel:languages:misc/SLE_12_SP5/devel:languages:misc.repo
zypper refresh
zypper install tokyocabinet