Let's not turn this into another newlib vs clib debate...
Not at all, use whichever you like, but if you were to have answeded because I need access to the AmigaDOS file handles (which was always my reason to sticking to clib2 for a couple of prohects) , I would simply have pointed out that that is available in newlib now.
Is this officially unsupported now or what is the current state? Then I'd have to revert to an older SDK.
I think it's just a small glitch in the SDK fix as we mentioned above by copying the file over or making a link. I never had any issues with clib2-ts and that link.