[MacPorts] #57751: qt4-mac: lots of errors trying to build with clang-7.0 (presumably related to defaulting to c++17 mode)

[MacPorts]

#57751: qt4-mac: lots of errors trying to build with clang-7.0 (presumably related
to defaulting to c++17 mode)
----------------------+-----------------------
  Reporter:  kencu    |      Owner:  michaelld
      Type:  defect   |     Status:  assigned
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:           |   Keywords:
      Port:  qt4-mac  |
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Comment (by devernay):

 sure, that would make sense.
 don't forget the part that renames or removes
 src/3rdparty/javascriptcore/VERSION
 I do that at the end of post-patch:


 {{{
     # <cstddef> from libc++ includes <version>, and
 src/3rdparty/javascriptcore is in the include path.
     # Since macOS is (most of the time) case insensitive, this causes the
 build to fail.
     delete ${worksrcpath}/src/3rdparty/javascriptcore/VERSION
 }}}

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Ticket URL: <https://trac.macports.org/ticket/57751#comment:9>
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