For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:eeich:branches:electronics/openSUSE_Tumbleweed/home:eeich:branches:electronics.repo
zypper refresh
zypper install wxWidgets-3_2-nostl
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:eeich:branches:electronics/15.6/home:eeich:branches:electronics.repo
zypper refresh
zypper install wxWidgets-3_2-nostl
For 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:eeich:branches:electronics/15.5/home:eeich:branches:electronics.repo
zypper refresh
zypper install wxWidgets-3_2-nostl