No libc++.1.dylib installed with Xcode 12 (+/- CLT)

I have a fresh install of Xcode 12 + CLT on Big Sur (no universal). I am trying to install llvm and it claims it cannot find libc++ library. There is a soft link in the /
usr/lib as expected but no target libc++.1.dylib
When I compare to my "stable" Catalina (where I also install Xcode 12 + CLT) I can find the library however the time stamp is June 5th. I suspect it comes from Xcode 11.6 Beta +CLT.
I am the feeling it is missing from Xcode 12
anyone has any idea?
my thinking at the moment install 11.6 beta and move on to 12.


Same to me
I'm on Version 12.0 beta 6 (12A8189n) and the issue is still not fixed
No libc++.1.dylib installed with Xcode 12 (+/- CLT)
 
 
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