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Changes between Initial Version and Version 1 of Ticket #60108, comment 2

initial	v1
7	7	I received an email from the `libc++` lead indicating their new floor for building `libc++` will soon be 10.12, and that has to be built as part of llvm/clang at present, so that will need a workaround using parts of `legacysupport` I think, or at least borrowing the `gettime` implementation from there to get the build going.
8	8
9		And finally, we have to sort out properly the name change from `macports-clang-N.0` to `macports-clang-N`, which sound trivial, but is unlikely to be so given how many ports I have seen that have tweaked compiler blacklisting based on certain tcl structures like:
	9	And finally, as part of this `clang-10` (or `clang-10.0`) is here, and we have to sort out properly the name change from `macports-clang-N.0` to `macports-clang-N`, which sound trivial, but is unlikely to be so given how many ports I have seen that have tweaked compiler blacklisting based on certain tcl structures like:
10	10
11	11	`compiler.blacklist-append {macports-clang-[3-8].0}` and such.