Build problem with MacOS10.10.sdk

Hi - I'm building Qt for Mac OS from source on 10.12.6 with the MacOS10.10 SDK. I believe 10.10 is a supported configuration.

This build fails like in this message https://www.mail-archive.com/interest@qt-project.org/msg26580.html

I used - no---feature-bearermanagement, then it failed further along building qcocoawindow.mm:

}}{{/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ -c -pipe -stdlib=libc++ -O2 -std=c++1z  -arch x86_64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk -mmacosx-version-min=10.10 -fvisibility=hidden -fvisibility-inlines-hidden -fno-exceptions -Wall -W -fPIC -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_EXCEPTIONS -D_LARGEFILE64_SOURCE -D_LARGEFILE_SOURCE -DQT_NO_DEBUG -DQT_PLUGIN -DQT_ACCESSIBILITY_SUPPORT_LIB -DQT_THEME_SUPPORT_LIB -DQT_FONTDATABASE_SUPPORT_LIB -DQT_GRAPHICS_SUPPORT_LIB -DQT_CLIPBOARD_SUPPORT_LIB -DQT_CGL_SUPPORT_LIB -DQT_PRINTSUPPORT_LIB -DQT_WIDGETS_LIB -DQT_GUI_LIB -DQT_CORE_LIB -I. -I../../../../include -I../../../../include/QtAccessibilitySupport -I../../../../include/QtAccessibilitySupport/5.9.1 -I../../../../include/QtAccessibilitySupport/5.9.1/QtAccessibilitySupport -I../../../../include/QtThemeSupport -I../../../../include/QtThemeSupport/5.9.1 -I../../../../include/QtThemeSupport/5.9.1/QtThemeSupport -I../../../../include/QtFontDatabaseSupport -I../../../../include/QtFontDatabaseSupport/5.9.1 -I../../../../include/QtFontDatabaseSupport/5.9.1/QtFontDatabaseSupport -I../../../../include/QtGraphicsSupport -I../../../../include/QtGraphicsSupport/5.9.1 -I../../../../include/QtGraphicsSupport/5.9.1/QtGraphicsSupport -I../../../../include/QtPrintSupport/5.9.1 -I../../../../include/QtPrintSupport/5.9.1/QtPrintSupport -I../../../../include/QtWidgets/5.9.1 -I../../../../include/QtWidgets/5.9.1/QtWidgets -I../../../../include/QtGui/5.9.1 -I../../../../include/QtGui/5.9.1/QtGui -I../../../../include/QtClipboardSupport -I../../../../include/QtClipboardSupport/5.9.1 -I../../../../include/QtClipboardSupport/5.9.1/QtClipboardSupport -I../../../../include/QtCglSupport -I../../../../include/QtCglSupport/5.9.1 -I../../../../include/QtCglSupport/5.9.1/QtCglSupport -I../../../../include/QtPrintSupport -I../../../../include/QtWidgets -I../../../../include/QtGui -I../../../../include/QtCore/5.9.1 -I../../../../include/QtCore/5.9.1/QtCore -I../../../../include/QtCore -I.moc -I../../../../mkspecs/macx-clang -F/Users/jss/qt-everywhere-opensource-src-5.9.1/qtbase/lib -o .obj/qcocoawindow.o qcocoawindow.mm
qcocoawindow.mm:323:5: error: type arguments cannot be applied to
      non-parameterized class 'NSEnumerator'
    NSEnumerator<NSWindow*> *windowEnumerator = nullptr;
    ^           ~~~~~~~~~~~
1 error generated.

How was the Qt binary package built for a MacOS10 SDK?