[MacPorts] #69805: macports-libcxx: sync with the latest compatible version of LLVM

[MacPorts]

#69805: macports-libcxx: sync with the latest compatible version of LLVM
---------------------------------------------+--------------------
  Reporter:  aeiouaeiouaeiouaeiouaeiouaeiou  |      Owner:  (none)
      Type:  defect                          |     Status:  new
  Priority:  Normal                          |  Milestone:
 Component:  ports                           |    Version:
Resolution:                                  |   Keywords:
      Port:  macports-libcxx, bitcoin        |
---------------------------------------------+--------------------

Comment (by aeiouaeiouaeiouaeiouaeiouaeiou):

 Replying to [comment:7 barracuda156]:
 > No hacks used, it just builds.

 What it shows when you run {{{otool -L $(which bitcoin)}}}?

 I had an idea to blacklist every Clang for {{{darwin < 19}}}. Despite the
 undesirability of this solution GCC uses its own libc++ implementation and
 I think this is the only way to use the bleeding edge C++20 functionality
 on legacy systems.

-- 
Ticket URL: <https://trac.macports.org/ticket/69805#comment:8>
MacPorts <https://www.macports.org/>
Ports system for macOS