llvm dev - Oct 2013 - [LLVMdev] libprofile_rt.dylib deprecated in darwin cmake build?

I noticed that the current llvm/clang/compiler-rt 3.4git sources no longer build
and install
libprofile_rt.dylib (but only the associated static libraries) on darwin with a
cmake build.
Is this change intentional as that configuration has been building the shared
library for
libprofile_rt for ages on darwin? Thanks in advance for any clarification.
      Jack