gcc11 from systemsmanagement:Uyuni:Main:UyuniTools:SLE12-Build-Deps project
Select Your Operating System
Add repository and install manually
For SLE 12 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/systemsmanagement:Uyuni:Main:UyuniTools:SLE12-Build-Deps/SLE_12/systemsmanagement:Uyuni:Main:UyuniTools:SLE12-Build-Deps.repo zypper refresh zypper install gcc11