Some configurations require more complicated version logic that sw_vers.
<rdar://problem/70069051>
Created attachment 410864 [details] Patch
Comment on attachment 410864 [details] Patch rs=me
Created attachment 410865 [details] Patch
Committed r268207: <https://trac.webkit.org/changeset/268207> All reviewed patches have been landed. Closing bug and clearing flags on attachment 410865 [details].