[MacPorts] #64869: PDAL @2.3.99.1: fatal error: 'filesystem' file not found

[MacPorts]

#64869: PDAL @2.3.99.1: fatal error: 'filesystem' file not found
-------------------------+----------------------
  Reporter:  ryandesign  |      Owner:  Veence
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.7.2
Resolution:              |   Keywords:
      Port:  PDAL        |
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Comment (by ryandesign):

 Replying to [comment:5 Veence]:
 > I’ve committed the change.

 In [0a7a69d9c2415c5ba47c327ecf21eecc83e20728/macports-ports] I see. Don't
 forget to reference ticket URLs in your commit messages so that a comment
 about the commit gets automatically added to the ticket.

 It looks like this hasn't fixed the build problem. According to
 [https://stackoverflow.com/questions/58667853/does-use-of-c17
 -stdfilesystem-require-macos-10-15-xcode-11-1 this] the C++17 filesystem
 feature requires macOS 10.15's version of libc++ or later.

 As you originally suggested, you could conceivably make the port use some
 version of boost to satisfy this requirement on 10.14 and earlier.

 Yes, there is the macports-libcxx port. I have no personal experience with
 it so I cannot comment on it.

-- 
Ticket URL: <https://trac.macports.org/ticket/64869#comment:8>
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