mingw64-lib3270 from home:PerryWerneck:pw3270 project
Select Your Operating System
Add repository and install manually
For 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:PerryWerneck:pw3270/15.5/home:PerryWerneck:pw3270.repo zypper refresh zypper install mingw64-lib3270