[MacPorts] #47994: gnuplot +qt5: build failure

[MacPorts]

#47994: gnuplot +qt5: build failure
----------------------------+---------------------
  Reporter:  jinxiaoyong@…  |      Owner:  mojca@…
      Type:  defect         |     Status:  new
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:
Resolution:                 |   Keywords:
      Port:  gnuplot        |
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Comment (by rjvbertin@…):

 So it seems mcalhoun did reuse my version of the qt5 portgroup definition
 (with many thanks again for [not] mentioning this nor soliciting any final
 feedback).
 The following mess-up is almost bound to lead to issues too:

 {{{
 #file=qt5-1.0.tcl
 [...]
 # standard install directory
 global qt_dir
 set qt_dir               ${prefix}/libexec/qt5-mac
 [...]
 global qt_archdata_dir
 set qt_archdata_dir  ${qt_dir}
 [...]
 set qt_dir              ${prefix}/libexec/${qt_name}
 #
 }}}

 So after setting a new variable `qt_archdata_dir` (which I fail to see the
 exact meaning of) to ${prefix}/libexec/qt5-mac, `qt_dir` and a whole slew
 of variables are redefined to use `${prefix}/libexec/qt5` as in my
 implementation. I think (but haven't bothered to check) that this must
 lead to having both directories under ${prefix}/libexec being used, which
 is completely unnecessary. Even if it doesn't, there is still the global
 `qt_archdata_dir` variable that's "exported" and that is likely to lead to
 confusion at some point down the road.

 Again, I don't see the point of that variable.  Qt itself (through the
 qtchooser utility) distinguishes between a QTTOOLDIR (where tools like
 qmake are expected) and a QTLIBSDIR (where the binary libraries are
 expected). The former is the most important and corresponds to
 `qt_bins_dir`, the latter evidently corresponds to `qt_libs_dir`. See my
 submission for port:qtchooser. There's simply no need for an additional
 "archdata" concept.

-- 
Ticket URL: <https://trac.macports.org/ticket/47994#comment:8>
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