[MacPorts] #55651: qt5-qtwebengine @5.10.0: Requires newer Xcode than can be installed on Yosemite

[MacPorts]

#55651: qt5-qtwebengine @5.10.0: Requires newer Xcode than can be installed on
Yosemite
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  Reporter:  ryandesign       |      Owner:  MarcusCalhoun-Lopez
      Type:  defect           |     Status:  new
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:
Resolution:                   |   Keywords:  yosemite
      Port:  qt5-qtwebengine  |
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Comment (by ryandesign):

 Replying to [comment:3 MarcusCalhoun-Lopez]:
 > Based on previous experience, it is extremely unlikely that a component
 of Qt can be patched to work on an older system.[[BR]]
 > Does an error earlier in the build process qualify as a fix for this
 problem?

 Not really. The qt5 portgroup chooses which version of Qt to use on each
 version of macOS, so it needs to choose a version that works. On Yosemite,
 it currently chooses a version of Qt where QtWebEngine cannot be built.

 It seems unlikely to me that the error message is literally correct—I
 doubt it actually requires Xcode 7.3 or later. It is more likely that it
 requires at least the version of clang in Xcode 7.3 or later, and/or the
 MacOSX10.10 SDK in Xcode 7.3 or later. MacPorts already provides newer
 clang compilers that can be used simply by blacklisting the unsuitable
 Xcode compiler. And I am working on a project to offer macOS SDKs via a
 MacPorts port.

-- 
Ticket URL: <https://trac.macports.org/ticket/55651#comment:4>
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