[MacPorts] #58741: get clang 3.4 and 3.9 4.0 5.0"back"

[MacPorts]

#58741: get clang 3.4 and 3.9 4.0 5.0"back"
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  Reporter:  rmottola             |      Owner:  (none)
      Type:  request              |     Status:  new
  Priority:  Normal               |  Milestone:
 Component:  ports                |    Version:
Resolution:                       |   Keywords:
      Port:  clang-3.9 clang-4.0  |
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Comment (by kencu):

 Yes, you needed 3.7 to get to 3.9. 3.4 wouldn't build it properly.

 If you need 3.9 for some reason, it's easy enough to get it back. You most
 likely still have it installed. Try `sudo port -v activate llvm-3.9` and
 it should pop up a list of the ones you have. Select the previous-to-last
 one. Then do the same with `clang-3.9` and you'll be good to go.

 The only issue will be if the underpinnnings every change requiring a
 rebuild -- I think this is unlikely to happen, but if it did, then you'd
 need a portfile to match that version. That is a bit more tricky.

 To do that, you create a local repository
 <https://guide.macports.org/chunked/development.local-repositories.html>
 and then find and copy over the last version of the llvm-3.9 directory
 that you want.

 You can find this pretty easily by looking at the log history in the git
 repo.

-- 
Ticket URL: <https://trac.macports.org/ticket/58741#comment:6>
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