[PATCH] D23638: [compiler-rt] Don't build ubsan cxxabi sources when unused

[Reid Kleckner via llvm-commits]

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rnk added a comment.

Can we unify things between non-Mac and Mac so that we don't need to have a dummy RTUBsan_cxx? I'm hoping Chris or Kuba can help here. I haven't heard from Kuba in months, though. =/


https://reviews.llvm.org/D23638