For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:spchamp/openSUSE_Tumbleweed/home:spchamp.repo
zypper refresh
zypper install zeromq
For openSUSE Slowroll run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:spchamp/openSUSE_Slowroll/home:spchamp.repo
zypper refresh
zypper install zeromq
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:spchamp/15.6/home:spchamp.repo
zypper refresh
zypper install zeromq
For 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:spchamp/15.5/home:spchamp.repo
zypper refresh
zypper install zeromq