[MacPorts] #69172: kicad 7.0.9 checksum mismatch

[MacPorts]

#69172: kicad 7.0.9 checksum mismatch
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  Reporter:  andlabs  |      Owner:  g5pw
      Type:  defect   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.9.0
Resolution:           |   Keywords:
      Port:  kicad    |
----------------------+----------------------

Comment (by kencu):

 Apple and LLVM moved some of the support for <optional> into libc++.

 So older MacOS versions with older versions of libc++ installed fail to
 ilnk as the symbols are missing.

 We have a "macports-libcxx" port that provides a somewhat newer libc++
 version for these older systems, which works most of the time but not all
 of the time, and has to be tested in each case it is used, as it can
 generate weird errors.

 To use that libc++ for a given port requires some minor modifications to
 the portfile.

-- 
Ticket URL: <https://trac.macports.org/ticket/69172#comment:13>
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