gcc from home:atikon-it:forks project
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Add repository and install manually
For openSUSE Leap 15.3 Update standard run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:atikon-it:forks/openSUSE_Leap_15.3_Update_standard/home:atikon-it:forks.repo zypper refresh zypper install gcc