gcc6 from home:Leen-Meyer:Java:bootstrap project
Select Your Operating System
Add repository and install manually
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:Leen-Meyer:Java:bootstrap/15.6/home:Leen-Meyer:Java:bootstrap.repo zypper refresh zypper install gcc6
For 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:Leen-Meyer:Java:bootstrap/15.5/home:Leen-Meyer:Java:bootstrap.repo zypper refresh zypper install gcc6