[MacPorts] #62021: gnuplot-5.4.1 fails to upgrade if +qt5 speficied

[MacPorts]

#62021: gnuplot-5.4.1 fails to upgrade if +qt5 speficied
-------------------------+------------------------
  Reporter:  mouse07410  |      Owner:  reneeotten
      Type:  defect      |     Status:  reopened
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:
      Port:  gnuplot     |
-------------------------+------------------------

Comment (by kencu):

 Oh, in your log it doesn't seem that those flags are being used, if they
 are set, so I guess that's not likely relevant, in the end:
 {{{
 :debug:configure CXXFLAGS='-pipe -Os -stdlib=libc++
 -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk -arch
 x86_64'
 148
 }}}

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Ticket URL: <https://trac.macports.org/ticket/62021#comment:7>
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