[th/fix-lto] fix gitlab-ci and in particular LTO issues
currently gitlab-ci shows various failures. Fix them.
Also fix LTO. Especially since Fedora 33 is about to enable that by default (and it's currently broken).
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currently gitlab-ci shows various failures. Fix them.
Also fix LTO. Especially since Fedora 33 is about to enable that by default (and it's currently broken).