Comment # 3 on bug 1121591 from Michal Srb

(In reply to Martin Li��ka from comment #2)
> There's another error:
> https://build.opensuse.org/package/live_build_log/openSUSE:Factory:Staging:
> Gcc7/llvm7/standard/x86_64

It is the same thing as I described in my previous comment. It is complaining
about compiler not supporting '-fuse-ld=gold', but that is misdetection. It
tries to compile a test file and that fails because of:

error: cannot open /usr/lib64/gcc/x86_64-suse-linux/9/libstdc++.so: No such
file or directory

The /usr/lib64/gcc/x86_64-suse-linux/9/libstdc++.so exists and it is a symbolic
link to ../../../libstdc++.so.6, but /usr/lib64/libstdc++.so.6 does not exist.
It would be in package libstdc++6, which is not installed, even that it is
required by libstdc++6-devel-gcc9, which is installed.

So build service for some reason does not honor the dependency of
libstdc++6-devel-gcc9. I don't know why, maybe some overwrite by project
settings? I don't think this can (or should) be fixed from the llvm package.