[MacPorts] #64600: Is there any special reason why llvm-3.5 is deprecated while llvm-3.3 and llvm-3.4 are kept?

[MacPorts]

#64600: Is there any special reason why llvm-3.5 is deprecated while llvm-3.3 and
llvm-3.4 are kept?
-------------------------------------------+-------------------------------
  Reporter:  barracuda156                  |      Owner:  (none)
      Type:  update                        |     Status:  new
  Priority:  Normal                        |  Milestone:
 Component:  ports                         |    Version:  2.7.1
Resolution:                                |   Keywords:  powerpc, leopard,
      Port:  llvm-3.3, llvm-3.4, llvm-3.5  |  llvm
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Comment (by barracuda156):

 Replying to [comment:1 kencu]:
 > llvm-3.3, 3.4, 3.7, and 5.0 are currently required for bootstrapping to
 a modern clang/llvm like 9.0.
 > having unneeded compilers hanging around causes a degree of confusion
 and generates many pointless tickets.

 Fair point.

 What about the linker? I honestly don't know why llvm is even needed to
 build a linker which is a tiny binary with 3 minutes building time.

 Do you recommend to use `+llvm3.7` on PowerPC systems or it doesn't
 matter? Or just untested?

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Ticket URL: <https://trac.macports.org/ticket/64600#comment:2>
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