py36-pyqt5: Failed to determine the detail of your Qt installation (with Xcode 11)

[carlofdtam (Carlo Tambuatco)]

From logfile:

Error: Failed to determine the detail of your Qt installation. Try again using
the --verbose flag to see more detail about the problem.
Querying qmake about your Qt installation...
Determining the details of your Qt installation...
/opt/local/libexec/qt5/bin/qmake -o cfgtest_QtCore.mk cfgtest_QtCore.pro
Project ERROR: Could not resolve SDK Path for 'macosx10.14' using --show-sdk-path
Command failed:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_python_py-pyqt5/py36-pyqt5/work/PyQt5_gpl-5.12.3" && /opt/local/Library/Frameworks/Python.framework/Versions/3.6/bin/python3.6 configure.py -q /opt/local/libexec/qt5/bin/qmake --verbose --confirm-license --sip=/opt/local/bin/sip-3.6 --dbus=/opt/local/Library/Frameworks/Python.framework/Versions/3.6/include/python3.6m/dbus-1.0 --designer-plugindir=/opt/local/libexec/qt5/plugins/designer/Py36Qt5 --qml-plugindir=/opt/local/libexec/qt5/plugins/Py36Qt5 --no-qsci-api --disable=QtWebKit --disable=QtWebKitWidgets --no-dist-info --allow-sip-warnings --spec=macx-clang 
Exit code: 1
Error: Failed to configure py36-pyqt5: configure failure: command execution failed

[carlofdtam (Carlo Tambuatco)]

Logfile