[MacPorts] #56829: qt5-qtwebengine @5.10.1: configure fails with Xcode 10+

[MacPorts]

#56829: qt5-qtwebengine @5.10.1: configure fails with Xcode 10+
------------------------+---------------------------------
 Reporter:  ryandesign  |      Owner:  MarcusCalhoun-Lopez
     Type:  defect      |     Status:  assigned
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:
 Keywords:              |       Port:  qt5-qtwebengine
------------------------+---------------------------------
 With Xcode 10 beta 3, configure fails with this erroneous error message:

 {{{
 Using Xcode version 10.0, but at least version 7.3 is required to build Qt
 WebEngine.
 }}}

 I reported it upstream: https://bugreports.qt.io/browse/QTBUG-69476.

 I provided a simple patch:
 https://bugreports.qt.io/secure/attachment/74656/platform.prf.diff

 Upstream said the patch I provided would only work with Qt 5.10 and later,
 so they provided a more complicated fix that can work on earlier Qt
 versions: https://codereview.qt-project.org/#/c/234617/

-- 
Ticket URL: <https://trac.macports.org/ticket/56829>
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