[libc-commits] [libc] [libc] add dl_iterate_phdr and dladdr (PR #121179)

[Nick Desaulniers via libc-commits]

nickdesaulniers wrote:

@petrhosek didn't you mention to me that there was a cmake config to disable the need for dlfcn.h for libunwind? Or was it that we could build libc++abi without unwind support, such that we did not need libunwind at all?

https://github.com/llvm/llvm-project/pull/121179