Xcode 12 has a slightly different organization which configure-xcode-for-embedded-development needs to take into account.
<rdar://problem/65687153>
Created attachment 404480 [details] Patch
Comment on attachment 404480 [details] Patch Seems OK. Could also search for it, but renaming seems just as likely as another path change in the future/
Committed r264480: <https://trac.webkit.org/changeset/264480> All reviewed patches have been landed. Closing bug and clearing flags on attachment 404480 [details].