qt5-qtwebengine @5.10.1: configure fails with Xcode 10+

[ryandesign (Ryan Carsten Schmidt)]

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/

[MarcusCalhoun-Lopez (Marcus Calhoun-Lopez)]

Thank you for looking into this.

[MarcusCalhoun-Lopez (Marcus Calhoun-Lopez)]

In 424d5f48bcf25ae10ef9a0ae51e5c4b3b8cf47ed/macports-ports (master):

qt5-qtwebengine: allow Xcode versions >= 10.0

See ​https://codereview.qt-project.org/#/c/234617/
See ​https://bugreports.qt.io/browse/QTBUG-69476
Fixes #56829

[ryandesign (Ryan Carsten Schmidt)]

qt58-qtwebengine needs the same fix:

Using XCode version 10.0, but at least version 5.1 is required to build Qt WebEngine.
QtWebEngine will not be built.

And maybe other versions do as well.

[MarcusCalhoun-Lopez (Marcus Calhoun-Lopez)]

In 37a0b34e9793d9c09e24e8f23af56f15dfb3f770/macports-ports (master):

qt5*-qtwebengine: allow Xcode versions >= 10.0

Fixes #56829