For openSUSE Slowroll run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:hsk17:d-l-c/openSUSE_Slowroll/home:hsk17:d-l-c.repo
zypper refresh
zypper install boost.175-extra
For openSUSE Factory zSystems run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:hsk17:d-l-c/openSUSE_Factory_zSystems/home:hsk17:d-l-c.repo
zypper refresh
zypper install boost.175-extra
For openSUSE Factory PowerPC run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:hsk17:d-l-c/openSUSE_Factory_PowerPC/home:hsk17:d-l-c.repo
zypper refresh
zypper install boost.175-extra
For openSUSE Factory run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:hsk17:d-l-c/openSUSE_Factory /home:hsk17:d-l-c.repo
zypper refresh
zypper install boost.175-extra
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:hsk17:d-l-c/15.6/home:hsk17:d-l-c.repo
zypper refresh
zypper install boost.175-extra